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consul/agent/config/builder.go

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// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package config
import (
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"net"
"net/url"
"os"
"path"
"path/filepath"
"reflect"
"regexp"
"sort"
"strconv"
"strings"
"time"
"github.com/armon/go-metrics/prometheus"
"github.com/hashicorp/go-bexpr"
"github.com/hashicorp/go-hclog"
"github.com/hashicorp/go-multierror"
"github.com/hashicorp/go-sockaddr/template"
"github.com/hashicorp/memberlist"
"golang.org/x/time/rate"
"github.com/hashicorp/consul/agent/cache"
"github.com/hashicorp/consul/agent/checks"
"github.com/hashicorp/consul/agent/connect/ca"
"github.com/hashicorp/consul/agent/consul"
"github.com/hashicorp/consul/agent/consul/authmethod/ssoauth"
consulrate "github.com/hashicorp/consul/agent/consul/rate"
"github.com/hashicorp/consul/agent/dns"
hcpconfig "github.com/hashicorp/consul/agent/hcp/config"
"github.com/hashicorp/consul/agent/rpc/middleware"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/agent/token"
"github.com/hashicorp/consul/ipaddr"
"github.com/hashicorp/consul/lib"
"github.com/hashicorp/consul/lib/stringslice"
libtempl "github.com/hashicorp/consul/lib/template"
"github.com/hashicorp/consul/logging"
"github.com/hashicorp/consul/tlsutil"
"github.com/hashicorp/consul/types"
)
type FlagValuesTarget = decodeTarget
// LoadOpts used by Load to construct and validate a RuntimeConfig.
type LoadOpts struct {
// FlagValues contains the command line arguments that can also be set
// in a config file.
FlagValues FlagValuesTarget
// ConfigFiles is a slice of paths to config files and directories that will
// be loaded.
//
// It is an error for any config files to have an extension other than `hcl`
// or `json`, unless ConfigFormat is also set. However, non-HCL/JSON files in
// a config directory are merely skipped, with a warning.
ConfigFiles []string
// ConfigFormat forces all config files to be interpreted as this format
// independent of their extension. Value may be `hcl` or `json`.
ConfigFormat string
// DevMode indicates whether the agent should be started in development
// mode. This cannot be configured in a config file.
DevMode *bool
// HCL is a slice of config data in hcl format. Each one will be loaded as
// if it were the source of a config file. Values from HCL will override
// values from ConfigFiles and FlagValues.
HCL []string
// DefaultConfig is an optional source that is applied after other defaults
// but before ConfigFiles and all other user specified config.
DefaultConfig Source
// Overrides are optional config sources that are applied as the very last
// config source so they can override any previous values.
Overrides []Source
// hostname is a shim for testing, allowing tests to specify a replacement
// for os.Hostname.
hostname func() (string, error)
// getPrivateIPv4 and getPublicIPv6 are shims for testing, allowing tests to
// specify a replacement for ipaddr.GetPrivateIPv4 and ipaddr.GetPublicIPv6.
getPrivateIPv4 func() ([]*net.IPAddr, error)
getPublicIPv6 func() ([]*net.IPAddr, error)
// sources is a shim for testing. Many test cases used explicit sources instead
// paths to config files. This shim allows us to preserve those test cases
// while using Load as the entrypoint.
sources []Source
}
// Load will build the configuration including the config source injected
// after all other defaults but before any user supplied configuration and the overrides
// source injected as the final source in the configuration parsing chain.
//
// The caller is responsible for handling any warnings in LoadResult.Warnings.
func Load(opts LoadOpts) (LoadResult, error) {
r := LoadResult{}
b, err := newBuilder(opts)
if err != nil {
return r, err
}
cfg, err := b.build()
if err != nil {
return r, err
}
if err := b.validate(cfg); err != nil {
return r, err
}
watcherFiles := stringslice.CloneStringSlice(opts.ConfigFiles)
return LoadResult{RuntimeConfig: &cfg, Warnings: b.Warnings, WatchedFiles: watcherFiles}, nil
}
// LoadResult is the result returned from Load. The caller is responsible for
// handling any warnings.
type LoadResult struct {
RuntimeConfig *RuntimeConfig
Warnings []string
WatchedFiles []string
}
// builder constructs and validates a runtime configuration from multiple
// configuration sources.
//
// The sources are merged in the following order:
//
// - default configuration
// - config files in alphabetical order
// - command line arguments
// - overrides
//
// The config sources are merged sequentially and later values overwrite
// previously set values. Slice values are merged by concatenating the two slices.
// Map values are merged by over-laying the later maps on top of earlier ones.
type builder struct {
opts LoadOpts
// Head, Sources, and Tail are used to manage the order of the
// config sources, as described in the comments above.
Head []Source
Sources []Source
Tail []Source
// Warnings contains the warnings encountered when
// parsing the configuration.
Warnings []string
// err contains the first error that occurred during
// building the runtime configuration.
err error
}
// newBuilder returns a new configuration Builder from the LoadOpts.
func newBuilder(opts LoadOpts) (*builder, error) {
configFormat := opts.ConfigFormat
if configFormat != "" && configFormat != "json" && configFormat != "hcl" {
return nil, fmt.Errorf("config: -config-format must be either 'hcl' or 'json'")
}
b := &builder{
opts: opts,
Head: []Source{DefaultSource(), DefaultEnterpriseSource()},
}
if boolVal(opts.DevMode) {
b.Head = append(b.Head, DevSource())
}
cfg, warns := applyDeprecatedFlags(&opts.FlagValues)
b.Warnings = append(b.Warnings, warns...)
// Since the merge logic is to overwrite all fields with later
// values except slices which are merged by appending later values
// we need to merge all slice values defined in flags before we
// merge the config files since the flag values for slices are
// otherwise appended instead of prepended.
slices, values := splitSlicesAndValues(cfg)
b.Head = append(b.Head, LiteralSource{Name: "flags.slices", Config: slices})
if opts.DefaultConfig != nil {
b.Head = append(b.Head, opts.DefaultConfig)
}
b.Sources = opts.sources
for _, path := range opts.ConfigFiles {
sources, err := b.sourcesFromPath(path, opts.ConfigFormat)
if err != nil {
return nil, err
}
b.Sources = append(b.Sources, sources...)
}
b.Tail = append(b.Tail, LiteralSource{Name: "flags.values", Config: values})
for i, s := range opts.HCL {
b.Tail = append(b.Tail, FileSource{
Name: fmt.Sprintf("flags-%d.hcl", i),
Format: "hcl",
Data: s,
})
}
b.Tail = append(b.Tail, NonUserSource(), DefaultConsulSource(), OverrideEnterpriseSource(), defaultVersionSource())
if boolVal(opts.DevMode) {
b.Tail = append(b.Tail, DevConsulSource())
}
if len(opts.Overrides) != 0 {
b.Tail = append(b.Tail, opts.Overrides...)
}
return b, nil
}
// sourcesFromPath reads a single config file or all files in a directory (but
// not its sub-directories) and returns Sources created from the
// files.
func (b *builder) sourcesFromPath(path string, format string) ([]Source, error) {
f, err := os.Open(path)
if err != nil {
return nil, fmt.Errorf("config: Open failed on %s. %s", path, err)
}
defer f.Close()
fi, err := f.Stat()
if err != nil {
return nil, fmt.Errorf("config: Stat failed on %s. %s", path, err)
}
if !fi.IsDir() {
if !shouldParseFile(path, format) {
return nil, fmt.Errorf("file %v has unknown extension; must be .hcl or .json, or config format must be set", path)
}
src, err := newSourceFromFile(path, format)
if err != nil {
return nil, err
}
return []Source{src}, nil
}
fis, err := f.Readdir(-1)
if err != nil {
return nil, fmt.Errorf("config: Readdir failed on %s. %s", path, err)
}
// sort files by name
sort.Sort(byName(fis))
var sources []Source
for _, fi := range fis {
fp := filepath.Join(path, fi.Name())
// check for a symlink and resolve the path
if fi.Mode()&os.ModeSymlink > 0 {
var err error
fp, err = filepath.EvalSymlinks(fp)
if err != nil {
return nil, err
}
fi, err = os.Stat(fp)
if err != nil {
return nil, err
}
}
// do not recurse into sub dirs
if fi.IsDir() {
continue
}
if !shouldParseFile(fp, format) {
b.warn("skipping file %v, extension must be .hcl or .json, or config format must be set", fp)
continue
}
src, err := newSourceFromFile(fp, format)
if err != nil {
return nil, err
}
sources = append(sources, src)
}
return sources, nil
}
// newSourceFromFile creates a Source from the contents of the file at path.
func newSourceFromFile(path string, format string) (Source, error) {
data, err := os.ReadFile(path)
if err != nil {
return nil, fmt.Errorf("config: failed to read %s: %s", path, err)
}
if format == "" {
format = formatFromFileExtension(path)
}
return FileSource{Name: path, Data: string(data), Format: format}, nil
}
// shouldParse file determines whether the file to be read is of a supported extension
func shouldParseFile(path string, configFormat string) bool {
srcFormat := formatFromFileExtension(path)
return configFormat != "" || srcFormat == "hcl" || srcFormat == "json"
}
func formatFromFileExtension(name string) string {
switch {
case strings.HasSuffix(name, ".json"):
return "json"
case strings.HasSuffix(name, ".hcl"):
return "hcl"
default:
return ""
}
}
type byName []os.FileInfo
func (a byName) Len() int { return len(a) }
func (a byName) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a byName) Less(i, j int) bool { return a[i].Name() < a[j].Name() }
// build constructs the runtime configuration from the config sources
// and the command line flags. The config sources are processed in the
// order they were added with the flags being processed last to give
// precedence over the other sources. If the error is nil then
// warnings can still contain deprecation or format warnings that should
// be presented to the user.
func (b *builder) build() (rt RuntimeConfig, err error) {
srcs := make([]Source, 0, len(b.Head)+len(b.Sources)+len(b.Tail))
srcs = append(srcs, b.Head...)
srcs = append(srcs, b.Sources...)
srcs = append(srcs, b.Tail...)
// parse the config sources into a configuration
var c Config
for _, s := range srcs {
c2, md, err := s.Parse()
switch {
case err == ErrNoData:
continue
case err != nil:
return RuntimeConfig{}, fmt.Errorf("failed to parse %v: %w", s.Source(), err)
}
var unusedErr error
for _, k := range md.Unused {
switch {
case k == "acl_enforce_version_8":
b.warn("config key %q is deprecated and should be removed", k)
case strings.HasPrefix(k, "audit.sink[") && strings.HasSuffix(k, "].name"):
b.warn("config key audit.sink[].name is deprecated and should be removed")
default:
unusedErr = multierror.Append(unusedErr, fmt.Errorf("invalid config key %s", k))
}
}
if unusedErr != nil {
return RuntimeConfig{}, fmt.Errorf("failed to parse %v: %s", s.Source(), unusedErr)
}
for _, err := range validateEnterpriseConfigKeys(&c2) {
b.warn("%s", err)
}
b.Warnings = append(b.Warnings, md.Warnings...)
// if we have a single 'check' or 'service' we need to add them to the
// list of checks and services first since we cannot merge them
// generically and later values would clobber earlier ones.
// TODO: move to applyDeprecatedConfig
if c2.Check != nil {
c2.Checks = append(c2.Checks, *c2.Check)
c2.Check = nil
}
if c2.Service != nil {
c2.Services = append(c2.Services, *c2.Service)
c2.Service = nil
}
c = Merge(c, c2)
}
// ----------------------------------------------------------------
// process/merge some complex values
//
dnsServiceTTL := map[string]time.Duration{}
for k, v := range c.DNS.ServiceTTL {
dnsServiceTTL[k] = b.durationVal(fmt.Sprintf("dns_config.service_ttl[%q]", k), &v)
}
soa := RuntimeSOAConfig{Refresh: 3600, Retry: 600, Expire: 86400, Minttl: 0}
if c.DNS.SOA != nil {
if c.DNS.SOA.Expire != nil {
soa.Expire = *c.DNS.SOA.Expire
}
if c.DNS.SOA.Minttl != nil {
soa.Minttl = *c.DNS.SOA.Minttl
}
if c.DNS.SOA.Refresh != nil {
soa.Refresh = *c.DNS.SOA.Refresh
}
if c.DNS.SOA.Retry != nil {
soa.Retry = *c.DNS.SOA.Retry
}
}
leaveOnTerm := !boolVal(c.ServerMode)
if c.LeaveOnTerm != nil {
leaveOnTerm = boolVal(c.LeaveOnTerm)
}
skipLeaveOnInt := boolVal(c.ServerMode)
if c.SkipLeaveOnInt != nil {
skipLeaveOnInt = boolVal(c.SkipLeaveOnInt)
}
// ----------------------------------------------------------------
// checks and services
//
var checks []*structs.CheckDefinition
if c.Check != nil {
checks = append(checks, b.checkVal(c.Check))
}
for _, check := range c.Checks {
checks = append(checks, b.checkVal(&check))
}
var services []*structs.ServiceDefinition
for _, service := range c.Services {
services = append(services, b.serviceVal(&service))
}
if c.Service != nil {
services = append(services, b.serviceVal(c.Service))
}
// ----------------------------------------------------------------
// addresses
//
// determine port values and replace values <= 0 and > 65535 with -1
dnsPort := b.portVal("ports.dns", c.Ports.DNS)
httpPort := b.portVal("ports.http", c.Ports.HTTP)
httpsPort := b.portVal("ports.https", c.Ports.HTTPS)
serverPort := b.portVal("ports.server", c.Ports.Server)
grpcPort := b.portVal("ports.grpc", c.Ports.GRPC)
grpcTlsPort := b.portVal("ports.grpc_tls", c.Ports.GRPCTLS)
// default gRPC TLS port for servers is 8503
if c.Ports.GRPCTLS == nil && boolVal(c.ServerMode) {
grpcTlsPort = 8503
}
serfPortLAN := b.portVal("ports.serf_lan", c.Ports.SerfLAN)
serfPortWAN := b.portVal("ports.serf_wan", c.Ports.SerfWAN)
proxyMinPort := b.portVal("ports.proxy_min_port", c.Ports.ProxyMinPort)
proxyMaxPort := b.portVal("ports.proxy_max_port", c.Ports.ProxyMaxPort)
sidecarMinPort := b.portVal("ports.sidecar_min_port", c.Ports.SidecarMinPort)
sidecarMaxPort := b.portVal("ports.sidecar_max_port", c.Ports.SidecarMaxPort)
exposeMinPort := b.portVal("ports.expose_min_port", c.Ports.ExposeMinPort)
exposeMaxPort := b.portVal("ports.expose_max_port", c.Ports.ExposeMaxPort)
if serverPort <= 0 {
return RuntimeConfig{}, fmt.Errorf(
"server-port must be greater than zero")
}
if serfPortLAN <= 0 {
return RuntimeConfig{}, fmt.Errorf(
"serf-lan-port must be greater than zero")
}
if proxyMaxPort < proxyMinPort {
return RuntimeConfig{}, fmt.Errorf(
"proxy_min_port must be less than proxy_max_port. To disable, set both to zero.")
}
if sidecarMaxPort < sidecarMinPort {
return RuntimeConfig{}, fmt.Errorf(
"sidecar_min_port must be less than sidecar_max_port. To disable, set both to zero.")
}
if exposeMaxPort < exposeMinPort {
return RuntimeConfig{}, fmt.Errorf(
"expose_min_port must be less than expose_max_port. To disable, set both to zero.")
}
// determine the default bind and advertise address
//
// First check whether the user provided an ANY address or whether
// the expanded template results in an ANY address. In that case we
// derive an advertise address from the current network
// configuration since we can listen on an ANY address for incoming
// traffic but cannot advertise it as the address on which the
// server can be reached.
bindAddrs := b.expandAddrs("bind_addr", c.BindAddr)
if len(bindAddrs) == 0 {
return RuntimeConfig{}, fmt.Errorf("bind_addr cannot be empty")
}
if len(bindAddrs) > 1 {
return RuntimeConfig{}, fmt.Errorf("bind_addr cannot contain multiple addresses. Use 'addresses.{dns,http,https}' instead.")
}
if isUnixAddr(bindAddrs[0]) {
return RuntimeConfig{}, fmt.Errorf("bind_addr cannot be a unix socket")
}
if !isIPAddr(bindAddrs[0]) {
return RuntimeConfig{}, fmt.Errorf("bind_addr must be an ip address")
}
if ipaddr.IsAny(stringVal(c.AdvertiseAddrLAN)) {
return RuntimeConfig{}, fmt.Errorf("Advertise address cannot be 0.0.0.0, :: or [::]")
}
if ipaddr.IsAny(stringVal(c.AdvertiseAddrWAN)) {
return RuntimeConfig{}, fmt.Errorf("Advertise WAN address cannot be 0.0.0.0, :: or [::]")
}
bindAddr := bindAddrs[0].(*net.IPAddr)
advertiseAddr := makeIPAddr(b.expandFirstIP("advertise_addr", c.AdvertiseAddrLAN), bindAddr)
if ipaddr.IsAny(advertiseAddr) {
addrtyp, detect := advertiseAddrFunc(b.opts, advertiseAddr)
advertiseAddrs, err := detect()
if err != nil {
return RuntimeConfig{}, fmt.Errorf("Error detecting %s address: %s", addrtyp, err)
}
if len(advertiseAddrs) == 0 {
return RuntimeConfig{}, fmt.Errorf("No %s address found", addrtyp)
}
if len(advertiseAddrs) > 1 {
return RuntimeConfig{}, fmt.Errorf("Multiple %s addresses found. Please configure one with 'bind' and/or 'advertise'.", addrtyp)
}
advertiseAddr = advertiseAddrs[0]
}
// derive other bind addresses from the bindAddr
rpcBindAddr := b.makeTCPAddr(bindAddr, nil, serverPort)
serfBindAddrLAN := b.makeTCPAddr(b.expandFirstIP("serf_lan", c.SerfBindAddrLAN), bindAddr, serfPortLAN)
// Only initialize serf WAN bind address when its enabled
var serfBindAddrWAN *net.TCPAddr
if serfPortWAN >= 0 {
serfBindAddrWAN = b.makeTCPAddr(b.expandFirstIP("serf_wan", c.SerfBindAddrWAN), bindAddr, serfPortWAN)
}
// derive other advertise addresses from the advertise address
advertiseAddrLAN := makeIPAddr(b.expandFirstIP("advertise_addr", c.AdvertiseAddrLAN), advertiseAddr)
advertiseAddrIsV6 := advertiseAddr.IP.To4() == nil
var advertiseAddrV4, advertiseAddrV6 *net.IPAddr
if !advertiseAddrIsV6 {
advertiseAddrV4 = advertiseAddr
} else {
advertiseAddrV6 = advertiseAddr
}
advertiseAddrLANIPv4 := makeIPAddr(b.expandFirstIP("advertise_addr_ipv4", c.AdvertiseAddrLANIPv4), advertiseAddrV4)
if advertiseAddrLANIPv4 != nil && advertiseAddrLANIPv4.IP.To4() == nil {
return RuntimeConfig{}, fmt.Errorf("advertise_addr_ipv4 must be an ipv4 address")
}
advertiseAddrLANIPv6 := makeIPAddr(b.expandFirstIP("advertise_addr_ipv6", c.AdvertiseAddrLANIPv6), advertiseAddrV6)
if advertiseAddrLANIPv6 != nil && advertiseAddrLANIPv6.IP.To4() != nil {
return RuntimeConfig{}, fmt.Errorf("advertise_addr_ipv6 must be an ipv6 address")
}
advertiseAddrWAN := makeIPAddr(b.expandFirstIP("advertise_addr_wan", c.AdvertiseAddrWAN), advertiseAddrLAN)
advertiseAddrWANIsV6 := advertiseAddrWAN.IP.To4() == nil
var advertiseAddrWANv4, advertiseAddrWANv6 *net.IPAddr
if !advertiseAddrWANIsV6 {
advertiseAddrWANv4 = advertiseAddrWAN
} else {
advertiseAddrWANv6 = advertiseAddrWAN
}
advertiseAddrWANIPv4 := makeIPAddr(b.expandFirstIP("advertise_addr_wan_ipv4", c.AdvertiseAddrWANIPv4), advertiseAddrWANv4)
if advertiseAddrWANIPv4 != nil && advertiseAddrWANIPv4.IP.To4() == nil {
return RuntimeConfig{}, fmt.Errorf("advertise_addr_wan_ipv4 must be an ipv4 address")
}
advertiseAddrWANIPv6 := makeIPAddr(b.expandFirstIP("advertise_addr_wan_ipv6", c.AdvertiseAddrWANIPv6), advertiseAddrWANv6)
if advertiseAddrWANIPv6 != nil && advertiseAddrWANIPv6.IP.To4() != nil {
return RuntimeConfig{}, fmt.Errorf("advertise_addr_wan_ipv6 must be an ipv6 address")
}
rpcAdvertiseAddr := &net.TCPAddr{IP: advertiseAddrLAN.IP, Port: serverPort}
serfAdvertiseAddrLAN := &net.TCPAddr{IP: advertiseAddrLAN.IP, Port: serfPortLAN}
// Only initialize serf WAN advertise address when its enabled
var serfAdvertiseAddrWAN *net.TCPAddr
if serfPortWAN >= 0 {
serfAdvertiseAddrWAN = &net.TCPAddr{IP: advertiseAddrWAN.IP, Port: serfPortWAN}
}
// determine client addresses
clientAddrs := b.expandIPs("client_addr", c.ClientAddr)
if len(clientAddrs) == 0 {
b.warn("client_addr is empty, client services (DNS, HTTP, HTTPS, GRPC) will not be listening for connections")
}
dnsAddrs := b.makeAddrs(b.expandAddrs("addresses.dns", c.Addresses.DNS), clientAddrs, dnsPort)
httpAddrs := b.makeAddrs(b.expandAddrs("addresses.http", c.Addresses.HTTP), clientAddrs, httpPort)
httpsAddrs := b.makeAddrs(b.expandAddrs("addresses.https", c.Addresses.HTTPS), clientAddrs, httpsPort)
grpcAddrs := b.makeAddrs(b.expandAddrs("addresses.grpc", c.Addresses.GRPC), clientAddrs, grpcPort)
grpcTlsAddrs := b.makeAddrs(b.expandAddrs("addresses.grpc_tls", c.Addresses.GRPCTLS), clientAddrs, grpcTlsPort)
for _, a := range dnsAddrs {
if x, ok := a.(*net.TCPAddr); ok {
dnsAddrs = append(dnsAddrs, &net.UDPAddr{IP: x.IP, Port: x.Port})
}
}
// expand dns recursors
uniq := map[string]bool{}
dnsRecursors := []string{}
for _, r := range c.DNSRecursors {
x, err := template.Parse(r)
if err != nil {
return RuntimeConfig{}, fmt.Errorf("Invalid DNS recursor template %q: %s", r, err)
}
for _, addr := range strings.Fields(x) {
if strings.HasPrefix(addr, "unix://") {
return RuntimeConfig{}, fmt.Errorf("DNS Recursors cannot be unix sockets: %s", addr)
}
if uniq[addr] {
continue
}
uniq[addr] = true
dnsRecursors = append(dnsRecursors, addr)
}
}
datacenter := strings.ToLower(stringVal(c.Datacenter))
altDomain := stringVal(c.DNSAltDomain)
// Create the default set of tagged addresses.
if c.TaggedAddresses == nil {
c.TaggedAddresses = make(map[string]string)
}
c.TaggedAddresses[structs.TaggedAddressLAN] = advertiseAddrLAN.IP.String()
if advertiseAddrLANIPv4 != nil {
c.TaggedAddresses[structs.TaggedAddressLANIPv4] = advertiseAddrLANIPv4.IP.String()
}
if advertiseAddrLANIPv6 != nil {
c.TaggedAddresses[structs.TaggedAddressLANIPv6] = advertiseAddrLANIPv6.IP.String()
}
c.TaggedAddresses[structs.TaggedAddressWAN] = advertiseAddrWAN.IP.String()
if advertiseAddrWANIPv4 != nil {
c.TaggedAddresses[structs.TaggedAddressWANIPv4] = advertiseAddrWANIPv4.IP.String()
}
if advertiseAddrWANIPv6 != nil {
c.TaggedAddresses[structs.TaggedAddressWANIPv6] = advertiseAddrWANIPv6.IP.String()
}
// segments
var segments []structs.NetworkSegment
for _, s := range c.Segments {
name := stringVal(s.Name)
port := b.portVal(fmt.Sprintf("segments[%s].port", name), s.Port)
if port <= 0 {
return RuntimeConfig{}, fmt.Errorf("Port for segment %q cannot be <= 0", name)
}
bind := b.makeTCPAddr(
b.expandFirstIP(fmt.Sprintf("segments[%s].bind", name), s.Bind),
bindAddr,
port,
)
advertise := b.makeTCPAddr(
b.expandFirstIP(fmt.Sprintf("segments[%s].advertise", name), s.Advertise),
advertiseAddrLAN,
port,
)
segments = append(segments, structs.NetworkSegment{
Name: name,
Bind: bind,
Advertise: advertise,
RPCListener: boolVal(s.RPCListener),
})
}
// Parse the metric filters
telemetryAllowedPrefixes, telemetryBlockedPrefixes := b.parsePrefixFilter(&c.Telemetry)
// raft performance scaling
performanceRaftMultiplier := intVal(c.Performance.RaftMultiplier)
if performanceRaftMultiplier < 1 || uint(performanceRaftMultiplier) > consul.MaxRaftMultiplier {
return RuntimeConfig{}, fmt.Errorf("performance.raft_multiplier cannot be %d. Must be between 1 and %d", performanceRaftMultiplier, consul.MaxRaftMultiplier)
}
consulRaftElectionTimeout := b.durationVal("consul.raft.election_timeout", c.Consul.Raft.ElectionTimeout) * time.Duration(performanceRaftMultiplier)
consulRaftHeartbeatTimeout := b.durationVal("consul.raft.heartbeat_timeout", c.Consul.Raft.HeartbeatTimeout) * time.Duration(performanceRaftMultiplier)
consulRaftLeaderLeaseTimeout := b.durationVal("consul.raft.leader_lease_timeout", c.Consul.Raft.LeaderLeaseTimeout) * time.Duration(performanceRaftMultiplier)
// Connect
connectEnabled := boolVal(c.Connect.Enabled)
connectCAProvider := stringVal(c.Connect.CAProvider)
connectCAConfig := c.Connect.CAConfig
// autoEncrypt and autoConfig implicitly turns on connect which is why
// they need to be above other settings that rely on connect.
autoEncryptDNSSAN := []string{}
for _, d := range c.AutoEncrypt.DNSSAN {
autoEncryptDNSSAN = append(autoEncryptDNSSAN, d)
}
autoEncryptIPSAN := []net.IP{}
for _, i := range c.AutoEncrypt.IPSAN {
ip := net.ParseIP(i)
if ip == nil {
b.warn(fmt.Sprintf("Cannot parse ip %q from AutoEncrypt.IPSAN", i))
continue
}
autoEncryptIPSAN = append(autoEncryptIPSAN, ip)
}
autoEncryptAllowTLS := boolVal(c.AutoEncrypt.AllowTLS)
autoConfig := b.autoConfigVal(c.AutoConfig, stringVal(c.Partition))
if autoEncryptAllowTLS || autoConfig.Enabled {
connectEnabled = true
}
// Connect proxy defaults
connectMeshGatewayWANFederationEnabled := boolVal(c.Connect.MeshGatewayWANFederationEnabled)
if connectMeshGatewayWANFederationEnabled && !connectEnabled {
return RuntimeConfig{}, fmt.Errorf("'connect.enable_mesh_gateway_wan_federation=true' requires 'connect.enabled=true'")
}
if connectCAConfig != nil {
// nolint: staticcheck // CA config should be changed to use HookTranslateKeys
lib.TranslateKeys(connectCAConfig, map[string]string{
// Consul CA config
"private_key": "PrivateKey",
"root_cert": "RootCert",
"intermediate_cert_ttl": "IntermediateCertTTL",
// Vault CA config
"address": "Address",
"token": "Token",
"root_pki_path": "RootPKIPath",
"root_pki_namespace": "RootPKINamespace",
"intermediate_pki_path": "IntermediatePKIPath",
"intermediate_pki_namespace": "IntermediatePKINamespace",
"ca_file": "CAFile",
"ca_path": "CAPath",
"cert_file": "CertFile",
"key_file": "KeyFile",
"tls_server_name": "TLSServerName",
"tls_skip_verify": "TLSSkipVerify",
// AWS CA config
"existing_arn": "ExistingARN",
"delete_on_exit": "DeleteOnExit",
// Common CA config
"leaf_cert_ttl": "LeafCertTTL",
"csr_max_per_second": "CSRMaxPerSecond",
"csr_max_concurrent": "CSRMaxConcurrent",
"private_key_type": "PrivateKeyType",
"private_key_bits": "PrivateKeyBits",
"root_cert_ttl": "RootCertTTL",
})
}
aclsEnabled := false
primaryDatacenter := strings.ToLower(stringVal(c.PrimaryDatacenter))
if c.ACL.Enabled != nil {
aclsEnabled = boolVal(c.ACL.Enabled)
}
// Set the primary DC if it wasn't set.
if primaryDatacenter == "" {
primaryDatacenter = datacenter
}
enableRemoteScriptChecks := boolVal(c.EnableScriptChecks)
enableLocalScriptChecks := boolValWithDefault(c.EnableLocalScriptChecks, enableRemoteScriptChecks)
var configEntries []structs.ConfigEntry
if len(c.ConfigEntries.Bootstrap) > 0 {
for i, rawEntry := range c.ConfigEntries.Bootstrap {
entry, err := structs.DecodeConfigEntry(rawEntry)
if err != nil {
return RuntimeConfig{}, fmt.Errorf("config_entries.bootstrap[%d]: %s", i, err)
}
if err := entry.Normalize(); err != nil {
return RuntimeConfig{}, fmt.Errorf("config_entries.bootstrap[%d]: %s", i, err)
}
if err := entry.Validate(); err != nil {
return RuntimeConfig{}, fmt.Errorf("config_entries.bootstrap[%d]: %w", i, err)
}
configEntries = append(configEntries, entry)
}
}
serfAllowedCIDRSLAN, err := memberlist.ParseCIDRs(c.SerfAllowedCIDRsLAN)
if err != nil {
return RuntimeConfig{}, fmt.Errorf("serf_lan_allowed_cidrs: %s", err)
}
serfAllowedCIDRSWAN, err := memberlist.ParseCIDRs(c.SerfAllowedCIDRsWAN)
if err != nil {
return RuntimeConfig{}, fmt.Errorf("serf_wan_allowed_cidrs: %s", err)
}
// Handle Deprecated UI config fields
if c.UI != nil {
b.warn("The 'ui' field is deprecated. Use the 'ui_config.enabled' field instead.")
if c.UIConfig.Enabled == nil {
c.UIConfig.Enabled = c.UI
}
}
if c.UIDir != nil {
b.warn("The 'ui_dir' field is deprecated. Use the 'ui_config.dir' field instead.")
if c.UIConfig.Dir == nil {
c.UIConfig.Dir = c.UIDir
}
}
if c.UIContentPath != nil {
b.warn("The 'ui_content_path' field is deprecated. Use the 'ui_config.content_path' field instead.")
if c.UIConfig.ContentPath == nil {
c.UIConfig.ContentPath = c.UIContentPath
}
}
serverMode := boolVal(c.ServerMode)
// ----------------------------------------------------------------
// build runtime config
//
dataDir := stringVal(c.DataDir)
rt = RuntimeConfig{
// non-user configurable values
AEInterval: b.durationVal("ae_interval", c.AEInterval),
CheckDeregisterIntervalMin: b.durationVal("check_deregister_interval_min", c.CheckDeregisterIntervalMin),
CheckReapInterval: b.durationVal("check_reap_interval", c.CheckReapInterval),
Revision: stringVal(c.Revision),
SegmentNameLimit: intVal(c.SegmentNameLimit),
SyncCoordinateIntervalMin: b.durationVal("sync_coordinate_interval_min", c.SyncCoordinateIntervalMin),
SyncCoordinateRateTarget: float64Val(c.SyncCoordinateRateTarget),
Version: stringVal(c.Version),
VersionPrerelease: stringVal(c.VersionPrerelease),
VersionMetadata: stringVal(c.VersionMetadata),
// What is a sensible default for BuildDate?
BuildDate: timeValWithDefault(c.BuildDate, time.Date(1970, 1, 00, 00, 00, 01, 0, time.UTC)),
// consul configuration
ConsulCoordinateUpdateBatchSize: intVal(c.Consul.Coordinate.UpdateBatchSize),
ConsulCoordinateUpdateMaxBatches: intVal(c.Consul.Coordinate.UpdateMaxBatches),
ConsulCoordinateUpdatePeriod: b.durationVal("consul.coordinate.update_period", c.Consul.Coordinate.UpdatePeriod),
ConsulRaftElectionTimeout: consulRaftElectionTimeout,
ConsulRaftHeartbeatTimeout: consulRaftHeartbeatTimeout,
ConsulRaftLeaderLeaseTimeout: consulRaftLeaderLeaseTimeout,
ConsulServerHealthInterval: b.durationVal("consul.server.health_interval", c.Consul.Server.HealthInterval),
// gossip configuration
GossipLANGossipInterval: b.durationVal("gossip_lan..gossip_interval", c.GossipLAN.GossipInterval),
GossipLANGossipNodes: intVal(c.GossipLAN.GossipNodes),
Locality: c.Locality,
GossipLANProbeInterval: b.durationVal("gossip_lan..probe_interval", c.GossipLAN.ProbeInterval),
GossipLANProbeTimeout: b.durationVal("gossip_lan..probe_timeout", c.GossipLAN.ProbeTimeout),
GossipLANSuspicionMult: intVal(c.GossipLAN.SuspicionMult),
GossipLANRetransmitMult: intVal(c.GossipLAN.RetransmitMult),
GossipWANGossipInterval: b.durationVal("gossip_wan..gossip_interval", c.GossipWAN.GossipInterval),
GossipWANGossipNodes: intVal(c.GossipWAN.GossipNodes),
GossipWANProbeInterval: b.durationVal("gossip_wan..probe_interval", c.GossipWAN.ProbeInterval),
GossipWANProbeTimeout: b.durationVal("gossip_wan..probe_timeout", c.GossipWAN.ProbeTimeout),
GossipWANSuspicionMult: intVal(c.GossipWAN.SuspicionMult),
GossipWANRetransmitMult: intVal(c.GossipWAN.RetransmitMult),
// ACL
ACLsEnabled: aclsEnabled,
ACLResolverSettings: consul.ACLResolverSettings{
ACLsEnabled: aclsEnabled,
Datacenter: datacenter,
NodeName: b.nodeName(c.NodeName),
ACLPolicyTTL: b.durationVal("acl.policy_ttl", c.ACL.PolicyTTL),
ACLTokenTTL: b.durationVal("acl.token_ttl", c.ACL.TokenTTL),
ACLRoleTTL: b.durationVal("acl.role_ttl", c.ACL.RoleTTL),
ACLDownPolicy: stringVal(c.ACL.DownPolicy),
ACLDefaultPolicy: stringVal(c.ACL.DefaultPolicy),
},
ACLEnableKeyListPolicy: boolVal(c.ACL.EnableKeyListPolicy),
ACLInitialManagementToken: stringVal(c.ACL.Tokens.InitialManagement),
ACLTokenReplication: boolVal(c.ACL.TokenReplication),
ACLTokens: token.Config{
DataDir: dataDir,
EnablePersistence: boolValWithDefault(c.ACL.EnableTokenPersistence, false),
ACLDefaultToken: stringVal(c.ACL.Tokens.Default),
ACLAgentToken: stringVal(c.ACL.Tokens.Agent),
ACLAgentRecoveryToken: stringVal(c.ACL.Tokens.AgentRecovery),
ACLReplicationToken: stringVal(c.ACL.Tokens.Replication),
ACLConfigFileRegistrationToken: stringVal(c.ACL.Tokens.ConfigFileRegistration),
},
// Autopilot
AutopilotCleanupDeadServers: boolVal(c.Autopilot.CleanupDeadServers),
AutopilotDisableUpgradeMigration: boolVal(c.Autopilot.DisableUpgradeMigration),
AutopilotLastContactThreshold: b.durationVal("autopilot.last_contact_threshold", c.Autopilot.LastContactThreshold),
AutopilotMaxTrailingLogs: intVal(c.Autopilot.MaxTrailingLogs),
AutopilotMinQuorum: uintVal(c.Autopilot.MinQuorum),
AutopilotRedundancyZoneTag: stringVal(c.Autopilot.RedundancyZoneTag),
AutopilotServerStabilizationTime: b.durationVal("autopilot.server_stabilization_time", c.Autopilot.ServerStabilizationTime),
AutopilotUpgradeVersionTag: stringVal(c.Autopilot.UpgradeVersionTag),
// DNS
DNSAddrs: dnsAddrs,
DNSAllowStale: boolVal(c.DNS.AllowStale),
DNSARecordLimit: intVal(c.DNS.ARecordLimit),
DNSDisableCompression: boolVal(c.DNS.DisableCompression),
DNSDomain: stringVal(c.DNSDomain),
DNSAltDomain: altDomain,
DNSEnableTruncate: boolVal(c.DNS.EnableTruncate),
DNSMaxStale: b.durationVal("dns_config.max_stale", c.DNS.MaxStale),
DNSNodeTTL: b.durationVal("dns_config.node_ttl", c.DNS.NodeTTL),
DNSOnlyPassing: boolVal(c.DNS.OnlyPassing),
DNSPort: dnsPort,
DNSRecursorStrategy: b.dnsRecursorStrategyVal(stringVal(c.DNS.RecursorStrategy)),
DNSRecursorTimeout: b.durationVal("recursor_timeout", c.DNS.RecursorTimeout),
DNSRecursors: dnsRecursors,
DNSServiceTTL: dnsServiceTTL,
DNSSOA: soa,
DNSUDPAnswerLimit: intVal(c.DNS.UDPAnswerLimit),
DNSNodeMetaTXT: boolValWithDefault(c.DNS.NodeMetaTXT, true),
DNSUseCache: boolVal(c.DNS.UseCache),
DNSCacheMaxAge: b.durationVal("dns_config.cache_max_age", c.DNS.CacheMaxAge),
// HTTP
HTTPPort: httpPort,
HTTPSPort: httpsPort,
HTTPAddrs: httpAddrs,
HTTPSAddrs: httpsAddrs,
HTTPBlockEndpoints: c.HTTPConfig.BlockEndpoints,
HTTPMaxHeaderBytes: intVal(c.HTTPConfig.MaxHeaderBytes),
HTTPResponseHeaders: c.HTTPConfig.ResponseHeaders,
AllowWriteHTTPFrom: b.cidrsVal("allow_write_http_from", c.HTTPConfig.AllowWriteHTTPFrom),
HTTPUseCache: boolValWithDefault(c.HTTPConfig.UseCache, true),
// Telemetry
Telemetry: lib.TelemetryConfig{
CirconusAPIApp: stringVal(c.Telemetry.CirconusAPIApp),
CirconusAPIToken: stringVal(c.Telemetry.CirconusAPIToken),
CirconusAPIURL: stringVal(c.Telemetry.CirconusAPIURL),
CirconusBrokerID: stringVal(c.Telemetry.CirconusBrokerID),
CirconusBrokerSelectTag: stringVal(c.Telemetry.CirconusBrokerSelectTag),
CirconusCheckDisplayName: stringVal(c.Telemetry.CirconusCheckDisplayName),
CirconusCheckForceMetricActivation: stringVal(c.Telemetry.CirconusCheckForceMetricActivation),
CirconusCheckID: stringVal(c.Telemetry.CirconusCheckID),
CirconusCheckInstanceID: stringVal(c.Telemetry.CirconusCheckInstanceID),
CirconusCheckSearchTag: stringVal(c.Telemetry.CirconusCheckSearchTag),
CirconusCheckTags: stringVal(c.Telemetry.CirconusCheckTags),
CirconusSubmissionInterval: stringVal(c.Telemetry.CirconusSubmissionInterval),
CirconusSubmissionURL: stringVal(c.Telemetry.CirconusSubmissionURL),
DisableHostname: boolVal(c.Telemetry.DisableHostname),
DogstatsdAddr: stringVal(c.Telemetry.DogstatsdAddr),
DogstatsdTags: c.Telemetry.DogstatsdTags,
RetryFailedConfiguration: boolVal(c.Telemetry.RetryFailedConfiguration),
FilterDefault: boolVal(c.Telemetry.FilterDefault),
AllowedPrefixes: telemetryAllowedPrefixes,
BlockedPrefixes: telemetryBlockedPrefixes,
MetricsPrefix: stringVal(c.Telemetry.MetricsPrefix),
StatsdAddr: stringVal(c.Telemetry.StatsdAddr),
StatsiteAddr: stringVal(c.Telemetry.StatsiteAddr),
PrometheusOpts: prometheus.PrometheusOpts{
Expiration: b.durationVal("prometheus_retention_time", c.Telemetry.PrometheusRetentionTime),
Name: stringVal(c.Telemetry.MetricsPrefix),
},
},
// Agent
AdvertiseAddrLAN: advertiseAddrLAN,
AdvertiseAddrWAN: advertiseAddrWAN,
AdvertiseReconnectTimeout: b.durationVal("advertise_reconnect_timeout", c.AdvertiseReconnectTimeout),
BindAddr: bindAddr,
Bootstrap: boolVal(c.Bootstrap),
BootstrapExpect: intVal(c.BootstrapExpect),
Cache: cache.Options{
EntryFetchRate: limitValWithDefault(
c.Cache.EntryFetchRate, float64(cache.DefaultEntryFetchRate),
),
EntryFetchMaxBurst: intValWithDefault(
c.Cache.EntryFetchMaxBurst, cache.DefaultEntryFetchMaxBurst,
),
},
AutoReloadConfig: boolVal(c.AutoReloadConfig),
CheckUpdateInterval: b.durationVal("check_update_interval", c.CheckUpdateInterval),
CheckOutputMaxSize: intValWithDefault(c.CheckOutputMaxSize, 4096),
Checks: checks,
ClientAddrs: clientAddrs,
ConfigEntryBootstrap: configEntries,
AutoEncryptTLS: boolVal(c.AutoEncrypt.TLS),
AutoEncryptDNSSAN: autoEncryptDNSSAN,
AutoEncryptIPSAN: autoEncryptIPSAN,
AutoEncryptAllowTLS: autoEncryptAllowTLS,
AutoConfig: autoConfig,
Cloud: b.cloudConfigVal(c.Cloud),
ConnectEnabled: connectEnabled,
ConnectCAProvider: connectCAProvider,
ConnectCAConfig: connectCAConfig,
ConnectMeshGatewayWANFederationEnabled: connectMeshGatewayWANFederationEnabled,
ConnectSidecarMinPort: sidecarMinPort,
ConnectSidecarMaxPort: sidecarMaxPort,
ConnectTestCALeafRootChangeSpread: b.durationVal("connect.test_ca_leaf_root_change_spread", c.Connect.TestCALeafRootChangeSpread),
ExposeMinPort: exposeMinPort,
ExposeMaxPort: exposeMaxPort,
DataDir: dataDir,
Datacenter: datacenter,
DefaultQueryTime: b.durationVal("default_query_time", c.DefaultQueryTime),
DevMode: boolVal(b.opts.DevMode),
DisableAnonymousSignature: boolVal(c.DisableAnonymousSignature),
DisableCoordinates: boolVal(c.DisableCoordinates),
DisableHostNodeID: boolVal(c.DisableHostNodeID),
DisableHTTPUnprintableCharFilter: boolVal(c.DisableHTTPUnprintableCharFilter),
DisableKeyringFile: boolVal(c.DisableKeyringFile),
DisableRemoteExec: boolVal(c.DisableRemoteExec),
DisableUpdateCheck: boolVal(c.DisableUpdateCheck),
DiscardCheckOutput: boolVal(c.DiscardCheckOutput),
DiscoveryMaxStale: b.durationVal("discovery_max_stale", c.DiscoveryMaxStale),
EnableAgentTLSForChecks: boolVal(c.EnableAgentTLSForChecks),
EnableCentralServiceConfig: boolVal(c.EnableCentralServiceConfig),
EnableDebug: boolVal(c.EnableDebug),
EnableRemoteScriptChecks: enableRemoteScriptChecks,
EnableLocalScriptChecks: enableLocalScriptChecks,
EncryptKey: stringVal(c.EncryptKey),
GRPCAddrs: grpcAddrs,
GRPCPort: grpcPort,
GRPCTLSAddrs: grpcTlsAddrs,
GRPCTLSPort: grpcTlsPort,
HTTPMaxConnsPerClient: intVal(c.Limits.HTTPMaxConnsPerClient),
HTTPSHandshakeTimeout: b.durationVal("limits.https_handshake_timeout", c.Limits.HTTPSHandshakeTimeout),
KVMaxValueSize: uint64Val(c.Limits.KVMaxValueSize),
LeaveDrainTime: b.durationVal("performance.leave_drain_time", c.Performance.LeaveDrainTime),
LeaveOnTerm: leaveOnTerm,
StaticRuntimeConfig: StaticRuntimeConfig{
EncryptVerifyIncoming: boolVal(c.EncryptVerifyIncoming),
EncryptVerifyOutgoing: boolVal(c.EncryptVerifyOutgoing),
},
Logging: logging.Config{
LogLevel: stringVal(c.LogLevel),
LogJSON: boolVal(c.LogJSON),
LogFilePath: stringVal(c.LogFile),
EnableSyslog: boolVal(c.EnableSyslog),
SyslogFacility: stringVal(c.SyslogFacility),
LogRotateDuration: b.durationVal("log_rotate_duration", c.LogRotateDuration),
LogRotateBytes: intVal(c.LogRotateBytes),
LogRotateMaxFiles: intVal(c.LogRotateMaxFiles),
},
MaxQueryTime: b.durationVal("max_query_time", c.MaxQueryTime),
NodeID: types.NodeID(stringVal(c.NodeID)),
NodeMeta: c.NodeMeta,
NodeName: b.nodeName(c.NodeName),
ReadReplica: boolVal(c.ReadReplica),
PeeringEnabled: boolVal(c.Peering.Enabled),
PeeringTestAllowPeerRegistrations: boolValWithDefault(c.Peering.TestAllowPeerRegistrations, false),
PidFile: stringVal(c.PidFile),
PrimaryDatacenter: primaryDatacenter,
PrimaryGateways: b.expandAllOptionalAddrs("primary_gateways", c.PrimaryGateways),
PrimaryGatewaysInterval: b.durationVal("primary_gateways_interval", c.PrimaryGatewaysInterval),
RPCAdvertiseAddr: rpcAdvertiseAddr,
RPCBindAddr: rpcBindAddr,
RPCHandshakeTimeout: b.durationVal("limits.rpc_handshake_timeout", c.Limits.RPCHandshakeTimeout),
RPCHoldTimeout: b.durationVal("performance.rpc_hold_timeout", c.Performance.RPCHoldTimeout),
RPCClientTimeout: b.durationVal("limits.rpc_client_timeout", c.Limits.RPCClientTimeout),
RPCMaxBurst: intVal(c.Limits.RPCMaxBurst),
RPCMaxConnsPerClient: intVal(c.Limits.RPCMaxConnsPerClient),
RPCProtocol: intVal(c.RPCProtocol),
RPCRateLimit: limitVal(c.Limits.RPCRate),
RPCConfig: consul.RPCConfig{EnableStreaming: boolValWithDefault(c.RPC.EnableStreaming, serverMode)},
RaftProtocol: intVal(c.RaftProtocol),
RaftSnapshotThreshold: intVal(c.RaftSnapshotThreshold),
RaftSnapshotInterval: b.durationVal("raft_snapshot_interval", c.RaftSnapshotInterval),
RaftTrailingLogs: intVal(c.RaftTrailingLogs),
RaftLogStoreConfig: b.raftLogStoreConfigVal(&c.RaftLogStore),
ReconnectTimeoutLAN: b.durationVal("reconnect_timeout", c.ReconnectTimeoutLAN),
ReconnectTimeoutWAN: b.durationVal("reconnect_timeout_wan", c.ReconnectTimeoutWAN),
RejoinAfterLeave: boolVal(c.RejoinAfterLeave),
RequestLimitsMode: b.requestsLimitsModeVal(stringVal(c.Limits.RequestLimits.Mode)),
RequestLimitsReadRate: limitVal(c.Limits.RequestLimits.ReadRate),
RequestLimitsWriteRate: limitVal(c.Limits.RequestLimits.WriteRate),
RetryJoinIntervalLAN: b.durationVal("retry_interval", c.RetryJoinIntervalLAN),
RetryJoinIntervalWAN: b.durationVal("retry_interval_wan", c.RetryJoinIntervalWAN),
RetryJoinLAN: b.expandAllOptionalAddrs("retry_join", c.RetryJoinLAN),
RetryJoinMaxAttemptsLAN: intVal(c.RetryJoinMaxAttemptsLAN),
RetryJoinMaxAttemptsWAN: intVal(c.RetryJoinMaxAttemptsWAN),
RetryJoinWAN: b.expandAllOptionalAddrs("retry_join_wan", c.RetryJoinWAN),
SegmentName: stringVal(c.SegmentName),
Segments: segments,
SegmentLimit: intVal(c.SegmentLimit),
SerfAdvertiseAddrLAN: serfAdvertiseAddrLAN,
SerfAdvertiseAddrWAN: serfAdvertiseAddrWAN,
SerfAllowedCIDRsLAN: serfAllowedCIDRSLAN,
SerfAllowedCIDRsWAN: serfAllowedCIDRSWAN,
SerfBindAddrLAN: serfBindAddrLAN,
SerfBindAddrWAN: serfBindAddrWAN,
SerfPortLAN: serfPortLAN,
SerfPortWAN: serfPortWAN,
ServerMode: serverMode,
ServerName: stringVal(c.ServerName),
ServerPort: serverPort,
ServerRejoinAgeMax: b.durationValWithDefaultMin("server_rejoin_age_max", c.ServerRejoinAgeMax, 24*7*time.Hour, 6*time.Hour),
Services: services,
SessionTTLMin: b.durationVal("session_ttl_min", c.SessionTTLMin),
SkipLeaveOnInt: skipLeaveOnInt,
TaggedAddresses: c.TaggedAddresses,
TranslateWANAddrs: boolVal(c.TranslateWANAddrs),
TxnMaxReqLen: uint64Val(c.Limits.TxnMaxReqLen),
UIConfig: b.uiConfigVal(c.UIConfig),
UnixSocketGroup: stringVal(c.UnixSocket.Group),
UnixSocketMode: stringVal(c.UnixSocket.Mode),
UnixSocketUser: stringVal(c.UnixSocket.User),
Watches: c.Watches,
XDSUpdateRateLimit: limitVal(c.XDS.UpdateMaxPerSecond),
AutoReloadConfigCoalesceInterval: 1 * time.Second,
LocalProxyConfigResyncInterval: 30 * time.Second,
}
// host metrics are enabled by default if consul is configured with HashiCorp Cloud Platform integration
rt.Telemetry.EnableHostMetrics = boolValWithDefault(c.Telemetry.EnableHostMetrics, rt.IsCloudEnabled())
rt.TLS, err = b.buildTLSConfig(rt, c.TLS)
if err != nil {
return RuntimeConfig{}, err
}
// `ports.grpc` previously supported TLS, but this was changed for Consul 1.14.
// This check is done to warn users that a config change is mandatory.
if rt.TLS.GRPC.CertFile != "" || (rt.TLS.AutoTLS && rt.TLS.GRPC.UseAutoCert) {
// If only `ports.grpc` is enabled, and the gRPC TLS port is not explicitly defined by the user,
// check the grpc TLS settings for incompatibilities.
if rt.GRPCPort > 0 && c.Ports.GRPCTLS == nil {
return RuntimeConfig{}, fmt.Errorf("the `ports.grpc` listener no longer supports TLS. Use `ports.grpc_tls` instead. This message is appearing because GRPC is configured to use TLS, but `ports.grpc_tls` is not defined")
}
}
rt.UseStreamingBackend = boolValWithDefault(c.UseStreamingBackend, true)
if rt.Cache.EntryFetchMaxBurst <= 0 {
return RuntimeConfig{}, fmt.Errorf("cache.entry_fetch_max_burst must be strictly positive, was: %v", rt.Cache.EntryFetchMaxBurst)
}
if rt.Cache.EntryFetchRate <= 0 {
return RuntimeConfig{}, fmt.Errorf("cache.entry_fetch_rate must be strictly positive, was: %v", rt.Cache.EntryFetchRate)
}
if rt.UIConfig.MetricsProvider == "prometheus" {
// Handle defaulting for the built-in version of prometheus.
if len(rt.UIConfig.MetricsProxy.PathAllowlist) == 0 {
rt.UIConfig.MetricsProxy.PathAllowlist = []string{
"/api/v1/query",
"/api/v1/query_range",
}
}
}
if err := b.BuildEnterpriseRuntimeConfig(&rt, &c); err != nil {
return rt, err
}
if rt.BootstrapExpect == 1 {
rt.Bootstrap = true
rt.BootstrapExpect = 0
b.warn(`BootstrapExpect is set to 1; this is the same as Bootstrap mode.`)
}
return rt, nil
}
func advertiseAddrFunc(opts LoadOpts, advertiseAddr *net.IPAddr) (string, func() ([]*net.IPAddr, error)) {
switch {
case ipaddr.IsAnyV4(advertiseAddr):
fn := opts.getPrivateIPv4
if fn == nil {
fn = ipaddr.GetPrivateIPv4
}
return "private IPv4", fn
case ipaddr.IsAnyV6(advertiseAddr):
fn := opts.getPublicIPv6
if fn == nil {
fn = ipaddr.GetPublicIPv6
}
return "public IPv6", fn
default:
panic("unsupported net.IPAddr Type")
}
}
// reBasicName validates that a field contains only lower case alphanumerics,
// underscore and dash and is non-empty.
var reBasicName = regexp.MustCompile("^[a-z0-9_-]+$")
func validateBasicName(field, value string, allowEmpty bool) error {
if value == "" {
if allowEmpty {
return nil
}
return fmt.Errorf("%s cannot be empty", field)
}
if !reBasicName.MatchString(value) {
return fmt.Errorf("%s can only contain lowercase alphanumeric, - or _ characters."+
" received: %q", field, value)
}
return nil
}
// validate performs semantic validation of the runtime configuration.
func (b *builder) validate(rt RuntimeConfig) error {
// validContentPath defines a regexp for a valid content path name.
validContentPath := regexp.MustCompile(`^[A-Za-z0-9/_-]+$`)
hasVersion := regexp.MustCompile(`^/v\d+/$`)
// ----------------------------------------------------------------
// check required params we cannot recover from first
//
if rt.RaftProtocol != 3 {
return fmt.Errorf("raft_protocol version %d is not supported by this version of Consul", rt.RaftProtocol)
}
if err := validateBasicName("datacenter", rt.Datacenter, false); err != nil {
return err
}
if rt.DataDir == "" && !rt.DevMode {
return fmt.Errorf("data_dir cannot be empty")
}
if !validContentPath.MatchString(rt.UIConfig.ContentPath) {
return fmt.Errorf("ui-content-path can only contain alphanumeric, -, _, or /. received: %q", rt.UIConfig.ContentPath)
}
if hasVersion.MatchString(rt.UIConfig.ContentPath) {
return fmt.Errorf("ui-content-path cannot have 'v[0-9]'. received: %q", rt.UIConfig.ContentPath)
}
if err := validateBasicName("ui_config.metrics_provider", rt.UIConfig.MetricsProvider, true); err != nil {
return err
}
if rt.UIConfig.MetricsProviderOptionsJSON != "" {
// Attempt to parse the JSON to ensure it's valid, parsing into a map
// ensures we get an object.
var dummyMap map[string]interface{}
err := json.Unmarshal([]byte(rt.UIConfig.MetricsProviderOptionsJSON), &dummyMap)
if err != nil {
return fmt.Errorf("ui_config.metrics_provider_options_json must be empty "+
"or a string containing a valid JSON object. received: %q",
rt.UIConfig.MetricsProviderOptionsJSON)
}
}
if rt.UIConfig.MetricsProxy.BaseURL != "" {
u, err := url.Parse(rt.UIConfig.MetricsProxy.BaseURL)
if err != nil || !(u.Scheme == "http" || u.Scheme == "https") {
return fmt.Errorf("ui_config.metrics_proxy.base_url must be a valid http"+
" or https URL. received: %q",
rt.UIConfig.MetricsProxy.BaseURL)
}
}
for _, allowedPath := range rt.UIConfig.MetricsProxy.PathAllowlist {
if err := validateAbsoluteURLPath(allowedPath); err != nil {
return fmt.Errorf("ui_config.metrics_proxy.path_allowlist: %v", err)
}
}
for k, v := range rt.UIConfig.DashboardURLTemplates {
if err := validateBasicName("ui_config.dashboard_url_templates key names", k, false); err != nil {
return err
}
u, err := url.Parse(v)
if err != nil || !(u.Scheme == "http" || u.Scheme == "https") {
return fmt.Errorf("ui_config.dashboard_url_templates values must be a"+
" valid http or https URL. received: %q",
rt.UIConfig.MetricsProxy.BaseURL)
}
}
if !rt.DevMode {
fi, err := os.Stat(rt.DataDir)
switch {
case err != nil && !os.IsNotExist(err):
return fmt.Errorf("Error getting info on data_dir: %s", err)
case err == nil && !fi.IsDir():
return fmt.Errorf("data_dir %q is not a directory", rt.DataDir)
}
}
switch {
case rt.NodeName == "":
return fmt.Errorf("node_name cannot be empty")
case dns.InvalidNameRe.MatchString(rt.NodeName):
b.warn("Node name %q will not be discoverable "+
"via DNS due to invalid characters. Valid characters include "+
"all alpha-numerics and dashes.", rt.NodeName)
case consul.InvalidNodeName.MatchString(rt.NodeName):
// todo(kyhavlov): Add stronger validation here for node names.
b.warn("Found invalid characters in node name %q - whitespace and quotes "+
"(', \", `) cannot be used with auto-config.", rt.NodeName)
case len(rt.NodeName) > dns.MaxLabelLength:
b.warn("Node name %q will not be discoverable "+
"via DNS due to it being too long. Valid lengths are between "+
"1 and 63 bytes.", rt.NodeName)
}
if ipaddr.IsAny(rt.AdvertiseAddrLAN.IP) {
return fmt.Errorf("Advertise address cannot be 0.0.0.0, :: or [::]")
}
if ipaddr.IsAny(rt.AdvertiseAddrWAN.IP) {
return fmt.Errorf("Advertise WAN address cannot be 0.0.0.0, :: or [::]")
}
if err := b.validateSegments(rt); err != nil {
return err
}
for _, a := range rt.DNSAddrs {
if _, ok := a.(*net.UnixAddr); ok {
return fmt.Errorf("DNS address cannot be a unix socket")
}
}
for _, a := range rt.DNSRecursors {
if ipaddr.IsAny(a) {
return fmt.Errorf("DNS recursor address cannot be 0.0.0.0, :: or [::]")
}
}
if !isValidAltDomain(rt.DNSAltDomain, rt.Datacenter) {
return fmt.Errorf("alt_domain cannot start with {service,connect,node,query,addr,%s}", rt.Datacenter)
}
if rt.Bootstrap && !rt.ServerMode {
return fmt.Errorf("'bootstrap = true' requires 'server = true'")
}
if rt.BootstrapExpect < 0 {
return fmt.Errorf("bootstrap_expect cannot be %d. Must be greater than or equal to zero", rt.BootstrapExpect)
}
if rt.BootstrapExpect > 0 && !rt.ServerMode {
return fmt.Errorf("'bootstrap_expect > 0' requires 'server = true'")
}
if rt.BootstrapExpect > 0 && rt.DevMode {
return fmt.Errorf("'bootstrap_expect > 0' not allowed in dev mode")
}
if rt.BootstrapExpect > 0 && rt.Bootstrap {
return fmt.Errorf("'bootstrap_expect > 0' and 'bootstrap = true' are mutually exclusive")
}
if rt.CheckOutputMaxSize < 1 {
return fmt.Errorf("check_output_max_size must be positive, to discard check output use the discard_check_output flag")
}
if rt.AEInterval <= 0 {
return fmt.Errorf("ae_interval cannot be %s. Must be positive", rt.AEInterval)
}
if rt.AutopilotMaxTrailingLogs < 0 {
return fmt.Errorf("autopilot.max_trailing_logs cannot be %d. Must be greater than or equal to zero", rt.AutopilotMaxTrailingLogs)
}
if err := validateBasicName("primary_datacenter", rt.PrimaryDatacenter, true); err != nil {
return err
}
// In DevMode, UI is enabled by default, so to enable rt.UIDir, don't perform this check
if !rt.DevMode && rt.UIConfig.Enabled && rt.UIConfig.Dir != "" {
return fmt.Errorf(
"Both the ui_config.enabled and ui_config.dir (or -ui and -ui-dir) were specified, please provide only one.\n" +
"If trying to use your own web UI resources, use ui_config.dir or the -ui-dir flag.\n" +
"The web UI is included in the binary so use ui_config.enabled or the -ui flag to enable it")
}
if rt.DNSUDPAnswerLimit < 0 {
return fmt.Errorf("dns_config.udp_answer_limit cannot be %d. Must be greater than or equal to zero", rt.DNSUDPAnswerLimit)
}
if rt.DNSARecordLimit < 0 {
return fmt.Errorf("dns_config.a_record_limit cannot be %d. Must be greater than or equal to zero", rt.DNSARecordLimit)
}
if err := structs.ValidateNodeMetadata(rt.NodeMeta, false); err != nil {
return fmt.Errorf("node_meta invalid: %v", err)
}
if rt.EncryptKey != "" {
if _, err := decodeBytes(rt.EncryptKey); err != nil {
return fmt.Errorf("encrypt has invalid key: %s", err)
}
}
if rt.ConnectMeshGatewayWANFederationEnabled && !rt.ServerMode {
return fmt.Errorf("'connect.enable_mesh_gateway_wan_federation = true' requires 'server = true'")
}
if rt.ConnectMeshGatewayWANFederationEnabled && strings.ContainsAny(rt.NodeName, "/") {
return fmt.Errorf("'connect.enable_mesh_gateway_wan_federation = true' requires that 'node_name' not contain '/' characters")
}
if rt.ConnectMeshGatewayWANFederationEnabled {
if len(rt.RetryJoinWAN) > 0 {
return fmt.Errorf("'retry_join_wan' is incompatible with 'connect.enable_mesh_gateway_wan_federation = true'")
}
}
if len(rt.PrimaryGateways) > 0 {
if !rt.ServerMode {
return fmt.Errorf("'primary_gateways' requires 'server = true'")
}
if rt.PrimaryDatacenter == rt.Datacenter {
return fmt.Errorf("'primary_gateways' should only be configured in a secondary datacenter")
}
}
// Check the data dir for signs of an un-migrated Consul 0.5.x or older
// server. Consul refuses to start if this is present to protect a server
// with existing data from starting on a fresh data set.
if rt.ServerMode {
mdbPath := filepath.Join(rt.DataDir, "mdb")
if _, err := os.Stat(mdbPath); !os.IsNotExist(err) {
if os.IsPermission(err) {
return fmt.Errorf(
"CRITICAL: Permission denied for data folder at %q!\n"+
"Consul will refuse to boot without access to this directory.\n"+
"Please correct permissions and try starting again.", mdbPath)
}
return fmt.Errorf("CRITICAL: Deprecated data folder found at %q!\n"+
"Consul will refuse to boot with this directory present.\n"+
"See https://www.consul.io/docs/upgrade-specific.html for more information.", mdbPath)
}
// Raft LogStore validation
if rt.RaftLogStoreConfig.Backend != consul.LogStoreBackendBoltDB &&
rt.RaftLogStoreConfig.Backend != consul.LogStoreBackendWAL {
return fmt.Errorf("raft_logstore.backend must be one of '%s' or '%s'",
consul.LogStoreBackendBoltDB, consul.LogStoreBackendWAL)
}
if rt.RaftLogStoreConfig.WAL.SegmentSize < 1024*1024 {
return fmt.Errorf("raft_logstore.wal.segment_size_mb cannot be less than 1MB")
}
if rt.RaftLogStoreConfig.WAL.SegmentSize > 1024*1024*1024 {
return fmt.Errorf("raft_logstore.wal.segment_size_mb cannot be greater than 1024 (1GiB)")
}
}
inuse := map[string]string{}
if err := addrsUnique(inuse, "DNS", rt.DNSAddrs); err != nil {
// cannot happen since this is the first address
// we leave this for consistency
return err
}
if err := addrsUnique(inuse, "HTTP", rt.HTTPAddrs); err != nil {
return err
}
if err := addrsUnique(inuse, "HTTPS", rt.HTTPSAddrs); err != nil {
return err
}
if err := addrUnique(inuse, "RPC Advertise", rt.RPCAdvertiseAddr); err != nil {
return err
}
if err := addrUnique(inuse, "Serf Advertise LAN", rt.SerfAdvertiseAddrLAN); err != nil {
return err
}
// Validate serf WAN advertise address only when its set
if rt.SerfAdvertiseAddrWAN != nil {
if err := addrUnique(inuse, "Serf Advertise WAN", rt.SerfAdvertiseAddrWAN); err != nil {
return err
}
}
if b.err != nil {
return b.err
}
// Check for errors in the service definitions
for _, s := range rt.Services {
if err := s.Validate(); err != nil {
return fmt.Errorf("service %q: %s", s.Name, err)
}
}
// Check for errors in the node check definitions
for _, c := range rt.Checks {
if err := c.CheckType().Validate(); err != nil {
return fmt.Errorf("check %q: %w", c.Name, err)
}
}
// Validate the given Connect CA provider config
validCAProviders := map[string]bool{
"": true,
structs.ConsulCAProvider: true,
structs.VaultCAProvider: true,
structs.AWSCAProvider: true,
}
if _, ok := validCAProviders[rt.ConnectCAProvider]; !ok {
return fmt.Errorf("%s is not a valid CA provider", rt.ConnectCAProvider)
} else {
switch rt.ConnectCAProvider {
case structs.ConsulCAProvider:
if _, err := ca.ParseConsulCAConfig(rt.ConnectCAConfig); err != nil {
return err
}
case structs.VaultCAProvider:
if _, err := ca.ParseVaultCAConfig(rt.ConnectCAConfig); err != nil {
return err
}
case structs.AWSCAProvider:
if _, err := ca.ParseAWSCAConfig(rt.ConnectCAConfig); err != nil {
return err
}
}
}
if rt.ServerMode && rt.AutoEncryptTLS {
return fmt.Errorf("auto_encrypt.tls can only be used on a client.")
}
if !rt.ServerMode && rt.AutoEncryptAllowTLS {
return fmt.Errorf("auto_encrypt.allow_tls can only be used on a server.")
}
if rt.ServerMode && rt.AdvertiseReconnectTimeout != 0 {
return fmt.Errorf("advertise_reconnect_timeout can only be used on a client")
}
// ----------------------------------------------------------------
// warnings
//
if rt.ServerMode && !rt.DevMode && !rt.Bootstrap && rt.BootstrapExpect == 2 {
b.warn(`bootstrap_expect = 2: A cluster with 2 servers will provide no failure tolerance. See https://www.consul.io/docs/internals/consensus.html#deployment-table`)
}
if rt.ServerMode && !rt.Bootstrap && rt.BootstrapExpect > 2 && rt.BootstrapExpect%2 == 0 {
b.warn(`bootstrap_expect is even number: A cluster with an even number of servers does not achieve optimum fault tolerance. See https://www.consul.io/docs/internals/consensus.html#deployment-table`)
}
if rt.ServerMode && rt.Bootstrap && rt.BootstrapExpect == 0 {
b.warn(`bootstrap = true: do not enable unless necessary`)
}
if rt.ServerMode && !rt.DevMode && !rt.Bootstrap && rt.BootstrapExpect > 1 {
b.warn("bootstrap_expect > 0: expecting %d servers", rt.BootstrapExpect)
}
if rt.ServerMode {
if rt.UseStreamingBackend && !rt.RPCConfig.EnableStreaming {
b.warn("use_streaming_backend = true requires rpc.enable_streaming on servers to work properly")
}
} else if rt.RPCConfig.EnableStreaming {
b.warn("rpc.enable_streaming = true has no effect when not running in server mode")
}
if rt.AutoEncryptAllowTLS && !rt.TLS.InternalRPC.VerifyIncoming {
b.warn("if auto_encrypt.allow_tls is turned on, tls.internal_rpc.verify_incoming should be enabled (either explicitly or via tls.defaults.verify_incoming). It is necessary to turn it off during a migration to TLS, but it should definitely be turned on afterwards.")
}
if err := checkLimitsFromMaxConnsPerClient(rt.HTTPMaxConnsPerClient); err != nil {
return err
}
if rt.AutoConfig.Enabled && rt.AutoEncryptTLS {
return fmt.Errorf("both auto_encrypt.tls and auto_config.enabled cannot be set to true.")
}
if err := b.validateAutoConfig(rt); err != nil {
return err
}
if err := validateRemoteScriptsChecks(rt); err != nil {
// TODO: make this an error in a future version
b.warn(err.Error())
}
err := b.validateEnterpriseConfig(rt)
return err
}
// addrUnique checks if the given address is already in use for another
// protocol.
func addrUnique(inuse map[string]string, name string, addr net.Addr) error {
key := addr.Network() + ":" + addr.String()
if other, ok := inuse[key]; ok {
return fmt.Errorf("%s address %s already configured for %s", name, addr.String(), other)
}
inuse[key] = name
return nil
}
// addrsUnique checks if any of the give addresses is already in use for
// another protocol.
func addrsUnique(inuse map[string]string, name string, addrs []net.Addr) error {
for _, a := range addrs {
if err := addrUnique(inuse, name, a); err != nil {
return err
}
}
return nil
}
// splitSlicesAndValues moves all slice values defined in c to 'slices'
// and all other values to 'values'.
func splitSlicesAndValues(c Config) (slices, values Config) {
v, t := reflect.ValueOf(c), reflect.TypeOf(c)
rs, rv := reflect.New(t), reflect.New(t)
for i := 0; i < t.NumField(); i++ {
f := t.Field(i)
if f.Type.Kind() == reflect.Slice {
rs.Elem().Field(i).Set(v.Field(i))
} else {
rv.Elem().Field(i).Set(v.Field(i))
}
}
return rs.Elem().Interface().(Config), rv.Elem().Interface().(Config)
}
func (b *builder) warn(msg string, args ...interface{}) {
b.Warnings = append(b.Warnings, fmt.Sprintf(msg, args...))
}
func (b *builder) checkVal(v *CheckDefinition) *structs.CheckDefinition {
if v == nil {
return nil
}
var H2PingUseTLSVal bool
if stringVal(v.H2PING) != "" {
H2PingUseTLSVal = boolValWithDefault(v.H2PingUseTLS, true)
} else {
H2PingUseTLSVal = boolVal(v.H2PingUseTLS)
}
id := types.CheckID(stringVal(v.ID))
return &structs.CheckDefinition{
ID: id,
Name: stringVal(v.Name),
Notes: stringVal(v.Notes),
ServiceID: stringVal(v.ServiceID),
Token: stringVal(v.Token),
Status: stringVal(v.Status),
ScriptArgs: v.ScriptArgs,
HTTP: stringVal(v.HTTP),
Header: v.Header,
Method: stringVal(v.Method),
Body: stringVal(v.Body),
DisableRedirects: boolVal(v.DisableRedirects),
TCP: stringVal(v.TCP),
UDP: stringVal(v.UDP),
Interval: b.durationVal(fmt.Sprintf("check[%s].interval", id), v.Interval),
DockerContainerID: stringVal(v.DockerContainerID),
Shell: stringVal(v.Shell),
GRPC: stringVal(v.GRPC),
GRPCUseTLS: boolVal(v.GRPCUseTLS),
TLSServerName: stringVal(v.TLSServerName),
TLSSkipVerify: boolVal(v.TLSSkipVerify),
AliasNode: stringVal(v.AliasNode),
AliasService: stringVal(v.AliasService),
Timeout: b.durationVal(fmt.Sprintf("check[%s].timeout", id), v.Timeout),
TTL: b.durationVal(fmt.Sprintf("check[%s].ttl", id), v.TTL),
SuccessBeforePassing: intVal(v.SuccessBeforePassing),
FailuresBeforeCritical: intVal(v.FailuresBeforeCritical),
FailuresBeforeWarning: intValWithDefault(v.FailuresBeforeWarning, intVal(v.FailuresBeforeCritical)),
H2PING: stringVal(v.H2PING),
H2PingUseTLS: H2PingUseTLSVal,
OSService: stringVal(v.OSService),
DeregisterCriticalServiceAfter: b.durationVal(fmt.Sprintf("check[%s].deregister_critical_service_after", id), v.DeregisterCriticalServiceAfter),
OutputMaxSize: intValWithDefault(v.OutputMaxSize, checks.DefaultBufSize),
EnterpriseMeta: v.EnterpriseMeta.ToStructs(),
}
}
func (b *builder) svcTaggedAddresses(v map[string]ServiceAddress) map[string]structs.ServiceAddress {
if len(v) <= 0 {
return nil
}
svcAddrs := make(map[string]structs.ServiceAddress)
for addrName, addrConf := range v {
addr := structs.ServiceAddress{}
if addrConf.Address != nil {
addr.Address = *addrConf.Address
}
if addrConf.Port != nil {
addr.Port = *addrConf.Port
}
svcAddrs[addrName] = addr
}
return svcAddrs
}
func (b *builder) serviceVal(v *ServiceDefinition) *structs.ServiceDefinition {
if v == nil {
return nil
}
var checks structs.CheckTypes
for _, check := range v.Checks {
checks = append(checks, b.checkVal(&check).CheckType())
}
if v.Check != nil {
checks = append(checks, b.checkVal(v.Check).CheckType())
}
kind := b.serviceKindVal(v.Kind)
meta := make(map[string]string)
if err := structs.ValidateServiceMetadata(kind, v.Meta, false); err != nil {
b.err = multierror.Append(b.err, fmt.Errorf("invalid meta for service %s: %v", stringVal(v.Name), err))
} else {
meta = v.Meta
}
serviceWeights := &structs.Weights{Passing: 1, Warning: 1}
if v.Weights != nil {
if v.Weights.Passing != nil {
serviceWeights.Passing = *v.Weights.Passing
}
if v.Weights.Warning != nil {
serviceWeights.Warning = *v.Weights.Warning
}
}
if err := structs.ValidateWeights(serviceWeights); err != nil {
b.err = multierror.Append(b.err, fmt.Errorf("Invalid weight definition for service %s: %s", stringVal(v.Name), err))
}
if (v.Port != nil || v.Address != nil) && (v.SocketPath != nil) {
b.err = multierror.Append(b.err,
fmt.Errorf("service %s cannot have both socket path %s and address/port",
stringVal(v.Name), stringVal(v.SocketPath)))
}
return &structs.ServiceDefinition{
Kind: kind,
ID: stringVal(v.ID),
Name: stringVal(v.Name),
Tags: v.Tags,
Address: stringVal(v.Address),
TaggedAddresses: b.svcTaggedAddresses(v.TaggedAddresses),
Meta: meta,
Port: intVal(v.Port),
SocketPath: stringVal(v.SocketPath),
Token: stringVal(v.Token),
EnableTagOverride: boolVal(v.EnableTagOverride),
Weights: serviceWeights,
Checks: checks,
Proxy: b.serviceProxyVal(v.Proxy),
Connect: b.serviceConnectVal(v.Connect),
EnterpriseMeta: v.EnterpriseMeta.ToStructs(),
}
}
func (b *builder) serviceKindVal(v *string) structs.ServiceKind {
if v == nil {
return structs.ServiceKindTypical
}
switch *v {
case string(structs.ServiceKindConnectProxy):
return structs.ServiceKindConnectProxy
case string(structs.ServiceKindMeshGateway):
return structs.ServiceKindMeshGateway
case string(structs.ServiceKindTerminatingGateway):
return structs.ServiceKindTerminatingGateway
case string(structs.ServiceKindIngressGateway):
return structs.ServiceKindIngressGateway
case string(structs.ServiceKindAPIGateway):
return structs.ServiceKindAPIGateway
default:
return structs.ServiceKindTypical
}
}
func (b *builder) serviceProxyVal(v *ServiceProxy) *structs.ConnectProxyConfig {
if v == nil {
return nil
}
return &structs.ConnectProxyConfig{
DestinationServiceName: stringVal(v.DestinationServiceName),
DestinationServiceID: stringVal(v.DestinationServiceID),
LocalServiceAddress: stringVal(v.LocalServiceAddress),
LocalServicePort: intVal(v.LocalServicePort),
LocalServiceSocketPath: stringVal(&v.LocalServiceSocketPath),
Config: v.Config,
Upstreams: b.upstreamsVal(v.Upstreams),
MeshGateway: b.meshGatewayConfVal(v.MeshGateway),
Expose: b.exposeConfVal(v.Expose),
Mode: b.proxyModeVal(v.Mode),
TransparentProxy: b.transparentProxyConfVal(v.TransparentProxy),
}
}
func (b *builder) upstreamsVal(v []Upstream) structs.Upstreams {
ups := make(structs.Upstreams, len(v))
for i, u := range v {
ups[i] = structs.Upstream{
DestinationType: stringVal(u.DestinationType),
DestinationNamespace: stringVal(u.DestinationNamespace),
DestinationPartition: stringVal(u.DestinationPartition),
DestinationPeer: stringVal(u.DestinationPeer),
DestinationName: stringVal(u.DestinationName),
Datacenter: stringVal(u.Datacenter),
LocalBindAddress: stringVal(u.LocalBindAddress),
LocalBindPort: intVal(u.LocalBindPort),
LocalBindSocketPath: stringVal(u.LocalBindSocketPath),
LocalBindSocketMode: b.unixPermissionsVal("local_bind_socket_mode", u.LocalBindSocketMode),
Config: u.Config,
MeshGateway: b.meshGatewayConfVal(u.MeshGateway),
}
if ups[i].DestinationType == "" {
ups[i].DestinationType = structs.UpstreamDestTypeService
}
}
return ups
}
func (b *builder) meshGatewayConfVal(mgConf *MeshGatewayConfig) structs.MeshGatewayConfig {
cfg := structs.MeshGatewayConfig{Mode: structs.MeshGatewayModeDefault}
if mgConf == nil || mgConf.Mode == nil {
// return defaults
return cfg
}
mode, err := structs.ValidateMeshGatewayMode(*mgConf.Mode)
if err != nil {
b.err = multierror.Append(b.err, err)
return cfg
}
cfg.Mode = mode
return cfg
}
func (b *builder) dnsRecursorStrategyVal(v string) dns.RecursorStrategy {
var out dns.RecursorStrategy
switch dns.RecursorStrategy(v) {
case dns.RecursorStrategyRandom:
out = dns.RecursorStrategyRandom
case dns.RecursorStrategySequential, "":
out = dns.RecursorStrategySequential
default:
b.err = multierror.Append(b.err, fmt.Errorf("dns_config.recursor_strategy: invalid strategy: %q", v))
}
return out
}
func (b *builder) requestsLimitsModeVal(v string) consulrate.Mode {
var out consulrate.Mode
mode, ok := consulrate.RequestLimitsModeFromName(v)
if !ok {
b.err = multierror.Append(b.err, fmt.Errorf("limits.request_limits.mode: invalid mode: %q", v))
} else {
out = mode
}
return out
}
func (b *builder) exposeConfVal(v *ExposeConfig) structs.ExposeConfig {
var out structs.ExposeConfig
if v == nil {
return out
}
out.Checks = boolVal(v.Checks)
out.Paths = b.pathsVal(v.Paths)
return out
}
func (b *builder) transparentProxyConfVal(tproxyConf *TransparentProxyConfig) structs.TransparentProxyConfig {
var out structs.TransparentProxyConfig
if tproxyConf == nil {
return out
}
out.OutboundListenerPort = intVal(tproxyConf.OutboundListenerPort)
out.DialedDirectly = boolVal(tproxyConf.DialedDirectly)
return out
}
func (b *builder) proxyModeVal(v *string) structs.ProxyMode {
if v == nil {
return structs.ProxyModeDefault
}
mode, err := structs.ValidateProxyMode(*v)
if err != nil {
b.err = multierror.Append(b.err, err)
}
return mode
}
func (b *builder) pathsVal(v []ExposePath) []structs.ExposePath {
paths := make([]structs.ExposePath, len(v))
for i, p := range v {
paths[i] = structs.ExposePath{
ListenerPort: intVal(p.ListenerPort),
Path: stringVal(p.Path),
LocalPathPort: intVal(p.LocalPathPort),
Protocol: stringVal(p.Protocol),
}
}
return paths
}
func (b *builder) serviceConnectVal(v *ServiceConnect) *structs.ServiceConnect {
if v == nil {
return nil
}
sidecar := b.serviceVal(v.SidecarService)
if sidecar != nil {
// Sanity checks
if sidecar.ID != "" {
b.err = multierror.Append(b.err, fmt.Errorf("sidecar_service can't specify an ID"))
sidecar.ID = ""
}
if sidecar.Connect != nil {
if sidecar.Connect.SidecarService != nil {
b.err = multierror.Append(b.err, fmt.Errorf("sidecar_service can't have a nested sidecar_service"))
sidecar.Connect.SidecarService = nil
}
}
}
return &structs.ServiceConnect{
Native: boolVal(v.Native),
SidecarService: sidecar,
}
}
func (b *builder) uiConfigVal(v RawUIConfig) UIConfig {
return UIConfig{
Enabled: boolVal(v.Enabled),
Dir: stringVal(v.Dir),
ContentPath: UIPathBuilder(stringVal(v.ContentPath)),
MetricsProvider: stringVal(v.MetricsProvider),
MetricsProviderFiles: v.MetricsProviderFiles,
MetricsProviderOptionsJSON: stringVal(v.MetricsProviderOptionsJSON),
MetricsProxy: b.uiMetricsProxyVal(v.MetricsProxy),
DashboardURLTemplates: v.DashboardURLTemplates,
HCPEnabled: os.Getenv("CONSUL_HCP_ENABLED") == "true",
}
}
func (b *builder) uiMetricsProxyVal(v RawUIMetricsProxy) UIMetricsProxy {
var hdrs []UIMetricsProxyAddHeader
for _, hdr := range v.AddHeaders {
hdrs = append(hdrs, UIMetricsProxyAddHeader{
Name: stringVal(hdr.Name),
Value: stringVal(hdr.Value),
})
}
return UIMetricsProxy{
BaseURL: stringVal(v.BaseURL),
AddHeaders: hdrs,
PathAllowlist: v.PathAllowlist,
}
}
func boolValWithDefault(v *bool, defaultVal bool) bool {
if v == nil {
return defaultVal
}
return *v
}
func boolVal(v *bool) bool {
if v == nil {
return false
}
return *v
}
func (b *builder) durationValWithDefault(name string, v *string, defaultVal time.Duration) (d time.Duration) {
if v == nil {
return defaultVal
}
d, err := time.ParseDuration(*v)
if err != nil {
b.err = multierror.Append(b.err, fmt.Errorf("%s: invalid duration: %q: %s", name, *v, err))
}
return d
}
// durationValWithDefaultMin is equivalent to durationValWithDefault, but enforces a minimum duration.
func (b *builder) durationValWithDefaultMin(name string, v *string, defaultVal, minVal time.Duration) (d time.Duration) {
d = b.durationValWithDefault(name, v, defaultVal)
if d < minVal {
b.err = multierror.Append(b.err, fmt.Errorf("%s: duration '%s' cannot be less than: %s", name, *v, minVal))
}
return d
}
func (b *builder) durationVal(name string, v *string) (d time.Duration) {
return b.durationValWithDefault(name, v, 0)
}
func intValWithDefault(v *int, defaultVal int) int {
if v == nil {
return defaultVal
}
return *v
}
func intVal(v *int) int {
if v == nil {
return 0
}
return *v
}
func uintVal(v *uint) uint {
if v == nil {
return 0
}
return *v
}
func uint64Val(v *uint64) uint64 {
if v == nil {
return 0
}
return *v
}
// Expect an octal permissions string, e.g. 0644
func (b *builder) unixPermissionsVal(name string, v *string) string {
if v == nil {
return ""
}
if _, err := strconv.ParseUint(*v, 8, 32); err == nil {
return *v
}
b.err = multierror.Append(b.err, fmt.Errorf("%s: invalid mode: %s", name, *v))
return "0"
}
func (b *builder) portVal(name string, v *int) int {
if v == nil || *v <= 0 {
return -1
}
if *v > 65535 {
b.err = multierror.Append(b.err, fmt.Errorf("%s: invalid port: %d", name, *v))
}
return *v
}
func stringValWithDefault(v *string, defaultVal string) string {
if v == nil {
return defaultVal
}
return *v
}
func stringVal(v *string) string {
if v == nil {
return ""
}
return *v
}
func timeValWithDefault(v *time.Time, defaultVal time.Time) time.Time {
if v == nil {
return defaultVal
}
return *v
}
func float64ValWithDefault(v *float64, defaultVal float64) float64 {
if v == nil {
return defaultVal
}
return *v
}
func float64Val(v *float64) float64 {
return float64ValWithDefault(v, 0)
}
func limitVal(v *float64) rate.Limit {
f := float64Val(v)
if f < 0 {
return rate.Inf
}
return rate.Limit(f)
}
func limitValWithDefault(v *float64, defaultVal float64) rate.Limit {
f := float64ValWithDefault(v, defaultVal)
return limitVal(&f)
}
func (b *builder) cidrsVal(name string, v []string) (nets []*net.IPNet) {
if v == nil {
return
}
for _, p := range v {
_, net, err := net.ParseCIDR(strings.TrimSpace(p))
if err != nil {
b.err = multierror.Append(b.err, fmt.Errorf("%s: invalid cidr: %s", name, p))
}
nets = append(nets, net)
}
return
}
func (b *builder) tlsVersion(name string, v *string) types.TLSVersion {
// Handles unspecified config and empty string case.
//
// This check is not inside types.ValidateTLSVersionString because Envoy config
// distinguishes between an unset empty string which inherits parent config and
// an explicit TLS_AUTO which allows overriding parent config with the proxy
// defaults.
if v == nil || *v == "" {
return types.TLSVersionAuto
}
a := types.TLSVersion(*v)
err := types.ValidateTLSVersion(a)
if err != nil {
b.err = multierror.Append(b.err, fmt.Errorf("%s: invalid TLS version: %s", name, err))
return types.TLSVersionInvalid
}
return a
}
// validateTLSVersionCipherSuitesCompat checks that the specified TLS version supports
// specifying cipher suites
func validateTLSVersionCipherSuitesCompat(tlsMinVersion types.TLSVersion) error {
if tlsMinVersion == types.TLSv1_3 {
return fmt.Errorf("TLS 1.3 cipher suites are not configurable")
}
return nil
}
// tlsCipherSuites parses cipher suites from a comma-separated string into a
// recognized slice
func (b *builder) tlsCipherSuites(name string, v *string, tlsMinVersion types.TLSVersion) []types.TLSCipherSuite {
if v == nil {
return nil
}
if err := validateTLSVersionCipherSuitesCompat(tlsMinVersion); err != nil {
b.err = multierror.Append(b.err, fmt.Errorf("%s: %s", name, err))
return nil
}
*v = strings.TrimSpace(*v)
if *v == "" {
return []types.TLSCipherSuite{}
}
ciphers := strings.Split(*v, ",")
a := make([]types.TLSCipherSuite, len(ciphers))
for i, cipher := range ciphers {
a[i] = types.TLSCipherSuite(cipher)
}
err := types.ValidateConsulAgentCipherSuites(a)
if err != nil {
b.err = multierror.Append(b.err, fmt.Errorf("%s: invalid TLS cipher suites: %s", name, err))
return []types.TLSCipherSuite{}
}
return a
}
func (b *builder) nodeName(v *string) string {
nodeName := stringVal(v)
if nodeName == "" {
fn := b.opts.hostname
if fn == nil {
fn = os.Hostname
}
name, err := fn()
if err != nil {
b.err = multierror.Append(b.err, fmt.Errorf("node_name: %s", err))
return ""
}
nodeName = name
}
return strings.TrimSpace(nodeName)
}
// expandAddrs expands the go-sockaddr template in s and returns the
// result as a list of *net.IPAddr and *net.UnixAddr.
func (b *builder) expandAddrs(name string, s *string) []net.Addr {
if s == nil || *s == "" {
return nil
}
x, err := template.Parse(*s)
if err != nil {
b.err = multierror.Append(b.err, fmt.Errorf("%s: error parsing %q: %s", name, *s, err))
return nil
}
var addrs []net.Addr
for _, a := range strings.Fields(x) {
switch {
case strings.HasPrefix(a, "unix://"):
addrs = append(addrs, &net.UnixAddr{Name: a[len("unix://"):], Net: "unix"})
default:
// net.ParseIP does not like '[::]'
ip := net.ParseIP(a)
if a == "[::]" {
ip = net.ParseIP("::")
}
if ip == nil {
b.err = multierror.Append(b.err, fmt.Errorf("%s: invalid ip address: %s", name, a))
return nil
}
addrs = append(addrs, &net.IPAddr{IP: ip})
}
}
return addrs
}
// expandOptionalAddrs expands the go-sockaddr template in s and returns the
// result as a list of strings. If s does not contain a go-sockaddr template,
// the result list will contain the input string as a single element with no
// error set. In contrast to expandAddrs, expandOptionalAddrs does not validate
// if the result contains valid addresses and returns a list of strings.
// However, if the expansion of the go-sockaddr template fails an error is set.
func (b *builder) expandOptionalAddrs(name string, s *string) []string {
if s == nil || *s == "" {
return nil
}
x, err := template.Parse(*s)
if err != nil {
b.err = multierror.Append(b.err, fmt.Errorf("%s: error parsing %q: %s", name, *s, err))
return nil
}
if x != *s {
// A template has been expanded, split the results from go-sockaddr
return strings.Fields(x)
} else {
// No template has been expanded, pass through the input
return []string{*s}
}
}
func (b *builder) expandAllOptionalAddrs(name string, addrs []string) []string {
out := make([]string, 0, len(addrs))
for _, a := range addrs {
expanded := b.expandOptionalAddrs(name, &a)
if expanded != nil {
out = append(out, expanded...)
}
}
return out
}
// expandIPs expands the go-sockaddr template in s and returns a list of
// *net.IPAddr. If one of the expanded addresses is a unix socket
// address an error is set and nil is returned.
func (b *builder) expandIPs(name string, s *string) []*net.IPAddr {
if s == nil || *s == "" {
return nil
}
addrs := b.expandAddrs(name, s)
var x []*net.IPAddr
for _, addr := range addrs {
switch a := addr.(type) {
case *net.IPAddr:
x = append(x, a)
case *net.UnixAddr:
b.err = multierror.Append(b.err, fmt.Errorf("%s cannot be a unix socket", name))
return nil
default:
b.err = multierror.Append(b.err, fmt.Errorf("%s has invalid address type %T", name, a))
return nil
}
}
return x
}
// expandFirstAddr expands the go-sockaddr template in s and returns the
// first address which is either a *net.IPAddr or a *net.UnixAddr. If
// the template expands to multiple addresses an error is set and nil
// is returned.
func (b *builder) expandFirstAddr(name string, s *string) net.Addr {
if s == nil || *s == "" {
return nil
}
addrs := b.expandAddrs(name, s)
if len(addrs) == 0 {
return nil
}
if len(addrs) > 1 {
var x []string
for _, a := range addrs {
x = append(x, a.String())
}
b.err = multierror.Append(b.err, fmt.Errorf("%s: multiple addresses found: %s", name, strings.Join(x, " ")))
return nil
}
return addrs[0]
}
// expandFirstIP expands the go-sockaddr template in s and returns the
// first address if it is not a unix socket address. If the template
// expands to multiple addresses an error is set and nil is returned.
func (b *builder) expandFirstIP(name string, s *string) *net.IPAddr {
if s == nil || *s == "" {
return nil
}
addr := b.expandFirstAddr(name, s)
if addr == nil {
return nil
}
switch a := addr.(type) {
case *net.IPAddr:
return a
case *net.UnixAddr:
b.err = multierror.Append(b.err, fmt.Errorf("%s cannot be a unix socket", name))
return nil
default:
b.err = multierror.Append(b.err, fmt.Errorf("%s has invalid address type %T", name, a))
return nil
}
}
func makeIPAddr(pri *net.IPAddr, sec *net.IPAddr) *net.IPAddr {
if pri != nil {
return pri
}
return sec
}
func (b *builder) makeTCPAddr(pri *net.IPAddr, sec net.Addr, port int) *net.TCPAddr {
if pri == nil && reflect.ValueOf(sec).IsNil() || port <= 0 {
return nil
}
addr := pri
if addr == nil {
switch a := sec.(type) {
case *net.IPAddr:
addr = a
case *net.TCPAddr:
addr = &net.IPAddr{IP: a.IP}
default:
panic(fmt.Sprintf("makeTCPAddr requires a net.IPAddr or a net.TCPAddr. Got %T", a))
}
}
return &net.TCPAddr{IP: addr.IP, Port: port}
}
// makeAddr creates an *net.TCPAddr or a *net.UnixAddr from either the
// primary or secondary address and the given port. If the port is <= 0
// then the address is considered to be disabled and nil is returned.
func (b *builder) makeAddr(pri, sec net.Addr, port int) net.Addr {
if reflect.ValueOf(pri).IsNil() && reflect.ValueOf(sec).IsNil() || port <= 0 {
return nil
}
addr := pri
if addr == nil {
addr = sec
}
switch a := addr.(type) {
case *net.IPAddr:
return &net.TCPAddr{IP: a.IP, Port: port}
case *net.UnixAddr:
return a
default:
panic(fmt.Sprintf("invalid address type %T", a))
}
}
// makeAddrs creates a list of *net.TCPAddr or *net.UnixAddr entries
// from either the primary or secondary addresses and the given port.
// If the port is <= 0 then the address is considered to be disabled
// and nil is returned.
func (b *builder) makeAddrs(pri []net.Addr, sec []*net.IPAddr, port int) []net.Addr {
if len(pri) == 0 && len(sec) == 0 || port <= 0 {
return nil
}
addrs := pri
if len(addrs) == 0 {
addrs = []net.Addr{}
for _, a := range sec {
addrs = append(addrs, a)
}
}
var x []net.Addr
for _, a := range addrs {
x = append(x, b.makeAddr(a, nil, port))
}
return x
}
func (b *builder) autoConfigVal(raw AutoConfigRaw, agentPartition string) AutoConfig {
var val AutoConfig
val.Enabled = boolValWithDefault(raw.Enabled, false)
val.IntroToken = stringVal(raw.IntroToken)
// default the IntroToken to the env variable if specified.
if envToken := os.Getenv("CONSUL_INTRO_TOKEN"); envToken != "" {
if val.IntroToken != "" {
b.warn("Both auto_config.intro_token and the CONSUL_INTRO_TOKEN environment variable are set. Using the value from the environment variable")
}
val.IntroToken = envToken
}
val.IntroTokenFile = stringVal(raw.IntroTokenFile)
// These can be go-discover values and so don't have to resolve fully yet
val.ServerAddresses = b.expandAllOptionalAddrs("auto_config.server_addresses", raw.ServerAddresses)
val.DNSSANs = raw.DNSSANs
for _, i := range raw.IPSANs {
ip := net.ParseIP(i)
if ip == nil {
b.warn(fmt.Sprintf("Cannot parse ip %q from auto_config.ip_sans", i))
continue
}
val.IPSANs = append(val.IPSANs, ip)
}
val.Authorizer = b.autoConfigAuthorizerVal(raw.Authorization, agentPartition)
return val
}
func (b *builder) autoConfigAuthorizerVal(raw AutoConfigAuthorizationRaw, agentPartition string) AutoConfigAuthorizer {
// Our config file syntax wraps the static authorizer configuration in a "static" stanza. However
// internally we do not support multiple configured authorization types so the RuntimeConfig just
// inlines the static one. While we can and probably should extend the authorization types in the
// future to support dynamic authorizers (ACL Auth Methods configured via normal APIs) its not
// needed right now so the configuration types will remain simplistic until they need to be otherwise.
var val AutoConfigAuthorizer
entMeta := structs.DefaultEnterpriseMetaInPartition(agentPartition)
entMeta.Normalize()
val.Enabled = boolValWithDefault(raw.Enabled, false)
val.ClaimAssertions = raw.Static.ClaimAssertions
val.AllowReuse = boolValWithDefault(raw.Static.AllowReuse, false)
val.AuthMethod = structs.ACLAuthMethod{
Name: "Auto Config Authorizer",
Type: "jwt",
EnterpriseMeta: *entMeta,
Config: map[string]interface{}{
"JWTSupportedAlgs": raw.Static.JWTSupportedAlgs,
"BoundAudiences": raw.Static.BoundAudiences,
"ClaimMappings": raw.Static.ClaimMappings,
"ListClaimMappings": raw.Static.ListClaimMappings,
"OIDCDiscoveryURL": stringVal(raw.Static.OIDCDiscoveryURL),
"OIDCDiscoveryCACert": stringVal(raw.Static.OIDCDiscoveryCACert),
"JWKSURL": stringVal(raw.Static.JWKSURL),
"JWKSCACert": stringVal(raw.Static.JWKSCACert),
"JWTValidationPubKeys": raw.Static.JWTValidationPubKeys,
"BoundIssuer": stringVal(raw.Static.BoundIssuer),
"ExpirationLeeway": b.durationVal("auto_config.authorization.static.expiration_leeway", raw.Static.ExpirationLeeway),
"NotBeforeLeeway": b.durationVal("auto_config.authorization.static.not_before_leeway", raw.Static.NotBeforeLeeway),
"ClockSkewLeeway": b.durationVal("auto_config.authorization.static.clock_skew_leeway", raw.Static.ClockSkewLeeway),
},
}
return val
}
func (b *builder) validateAutoConfig(rt RuntimeConfig) error {
autoconf := rt.AutoConfig
if err := validateAutoConfigAuthorizer(rt); err != nil {
return err
}
if !autoconf.Enabled {
return nil
}
// Right now we require TLS as everything we are going to transmit via auto-config is sensitive. Signed Certificates, Tokens
// and other encryption keys. This must be transmitted over a secure connection so we don't allow doing otherwise.
if !rt.TLS.InternalRPC.VerifyOutgoing {
return fmt.Errorf("auto_config.enabled cannot be set without configuring TLS for server communications")
}
// Auto Config doesn't currently support configuring servers
if rt.ServerMode {
return fmt.Errorf("auto_config.enabled cannot be set to true for server agents.")
}
// When both are set we will prefer the given value over the file.
if autoconf.IntroToken != "" && autoconf.IntroTokenFile != "" {
b.warn("Both an intro token and intro token file are set. The intro token will be used instead of the file")
} else if autoconf.IntroToken == "" && autoconf.IntroTokenFile == "" {
return fmt.Errorf("One of auto_config.intro_token, auto_config.intro_token_file or the CONSUL_INTRO_TOKEN environment variable must be set to enable auto_config")
}
if len(autoconf.ServerAddresses) == 0 {
// TODO (autoconf) can we/should we infer this from the join/retry join addresses. I think no, as we will potentially
// be overriding those retry join addresses with the autoconf process anyways.
return fmt.Errorf("auto_config.enabled is set without providing a list of addresses")
}
return nil
}
func validateAutoConfigAuthorizer(rt RuntimeConfig) error {
authz := rt.AutoConfig.Authorizer
if !authz.Enabled {
return nil
}
// When in a secondary datacenter with ACLs enabled, we require token replication to be enabled
// as that is what allows us to create the local tokens to distribute to the clients. Otherwise
// we would have to have a token with the ability to create ACL tokens in the primary and make
// RPCs in response to auto config requests.
if rt.ACLsEnabled && rt.PrimaryDatacenter != rt.Datacenter && !rt.ACLTokenReplication {
return fmt.Errorf("Enabling auto-config authorization (auto_config.authorization.enabled) in non primary datacenters with ACLs enabled (acl.enabled) requires also enabling ACL token replication (acl.enable_token_replication)")
}
// Auto Config Authorization is only supported on servers
if !rt.ServerMode {
return fmt.Errorf("auto_config.authorization.enabled cannot be set to true for client agents")
}
// Right now we require TLS as everything we are going to transmit via auto-config is sensitive. Signed Certificates, Tokens
// and other encryption keys. This must be transmitted over a secure connection so we don't allow doing otherwise.
if rt.TLS.InternalRPC.CertFile == "" {
return fmt.Errorf("auto_config.authorization.enabled cannot be set without providing a TLS certificate for the server")
}
// build out the validator to ensure that the given configuration was valid
null := hclog.NewNullLogger()
validator, err := ssoauth.NewValidator(null, &authz.AuthMethod)
if err != nil {
return fmt.Errorf("auto_config.authorization.static has invalid configuration: %v", err)
}
// create a blank identity for use to validate the claim assertions.
blankID := validator.NewIdentity()
varMap := map[string]string{
"node": "fake",
"segment": "fake",
"partition": "fake",
}
// validate all the claim assertions
for _, raw := range authz.ClaimAssertions {
// validate any HIL
filled, err := libtempl.InterpolateHIL(raw, varMap, true)
if err != nil {
return fmt.Errorf("auto_config.authorization.static.claim_assertion %q is invalid: %v", raw, err)
}
// validate the bexpr syntax - note that for now all the keys mapped by the claim mappings
// are not validateable due to them being put inside a map. Some bexpr updates to setup keys
// from current map keys would probably be nice here.
if _, err := bexpr.CreateEvaluatorForType(filled, nil, blankID.SelectableFields); err != nil {
return fmt.Errorf("auto_config.authorization.static.claim_assertion %q is invalid: %v", raw, err)
}
}
return nil
}
func (b *builder) cloudConfigVal(v *CloudConfigRaw) hcpconfig.CloudConfig {
val := hcpconfig.CloudConfig{
ResourceID: os.Getenv("HCP_RESOURCE_ID"),
}
if v == nil {
return val
}
val.ClientID = stringVal(v.ClientID)
val.ClientSecret = stringVal(v.ClientSecret)
val.AuthURL = stringVal(v.AuthURL)
val.Hostname = stringVal(v.Hostname)
val.ScadaAddress = stringVal(v.ScadaAddress)
if resourceID := stringVal(v.ResourceID); resourceID != "" {
val.ResourceID = resourceID
}
return val
}
// decodeBytes returns the encryption key decoded.
func decodeBytes(key string) ([]byte, error) {
return base64.StdEncoding.DecodeString(key)
}
func isIPAddr(a net.Addr) bool {
_, ok := a.(*net.IPAddr)
return ok
}
func isUnixAddr(a net.Addr) bool {
_, ok := a.(*net.UnixAddr)
return ok
}
// isValidAltDomain returns true if the given domain is not prefixed
// by keywords used when dispatching DNS requests
func isValidAltDomain(domain, datacenter string) bool {
reAltDomain := regexp.MustCompile(
fmt.Sprintf(
"^(service|connect|node|query|addr|%s)\\.(%s\\.)?",
datacenter, datacenter,
),
)
return !reAltDomain.MatchString(domain)
}
// UIPathBuilder checks to see if there was a path set
// If so, adds beginning and trailing slashes to UI path
func UIPathBuilder(UIContentString string) string {
if UIContentString != "" {
var fmtedPath string
fmtedPath = strings.Trim(UIContentString, "/")
fmtedPath = "/" + fmtedPath + "/"
return fmtedPath
}
return "/ui/"
}
const remoteScriptCheckSecurityWarning = "using enable-script-checks without ACLs and without allow_write_http_from is DANGEROUS, use enable-local-script-checks instead, see https://www.hashicorp.com/blog/protecting-consul-from-rce-risk-in-specific-configurations/"
// validateRemoteScriptsChecks returns an error if EnableRemoteScriptChecks is
// enabled without other security features, which mitigate the risk of executing
// remote scripts.
func validateRemoteScriptsChecks(conf RuntimeConfig) error {
if conf.EnableRemoteScriptChecks && !conf.ACLsEnabled && len(conf.AllowWriteHTTPFrom) == 0 {
return errors.New(remoteScriptCheckSecurityWarning)
}
return nil
}
func validateAbsoluteURLPath(p string) error {
if !path.IsAbs(p) {
return fmt.Errorf("path %q is not an absolute path", p)
}
// A bit more extra validation that these are actually paths.
u, err := url.Parse(p)
if err != nil ||
u.Scheme != "" ||
u.Opaque != "" ||
u.User != nil ||
u.Host != "" ||
u.RawQuery != "" ||
u.Fragment != "" ||
u.Path != p {
return fmt.Errorf("path %q is not an absolute path", p)
}
return nil
}
func (b *builder) buildTLSConfig(rt RuntimeConfig, t TLS) (tlsutil.Config, error) {
var c tlsutil.Config
// Consul makes no outgoing connections to the public gRPC port (internal gRPC
// traffic goes through the multiplexed internal RPC port) so return an error
// rather than let the user think this setting is going to do anything useful.
if t.GRPC.VerifyOutgoing != nil {
return c, errors.New("verify_outgoing is not valid in the tls.grpc stanza")
}
// Similarly, only the internal RPC configuration honors VerifyServerHostname
// so we call it out here too.
if t.Defaults.VerifyServerHostname != nil || t.GRPC.VerifyServerHostname != nil || t.HTTPS.VerifyServerHostname != nil {
return c, errors.New("verify_server_hostname is only valid in the tls.internal_rpc stanza")
}
// And UseAutoCert right now only applies to external gRPC interface.
if t.Defaults.UseAutoCert != nil || t.HTTPS.UseAutoCert != nil || t.InternalRPC.UseAutoCert != nil {
return c, errors.New("use_auto_cert is only valid in the tls.grpc stanza")
}
defaultTLSMinVersion := b.tlsVersion("tls.defaults.tls_min_version", t.Defaults.TLSMinVersion)
defaultCipherSuites := b.tlsCipherSuites("tls.defaults.tls_cipher_suites", t.Defaults.TLSCipherSuites, defaultTLSMinVersion)
mapCommon := func(name string, src TLSProtocolConfig, dst *tlsutil.ProtocolConfig) {
dst.CAPath = stringValWithDefault(src.CAPath, stringVal(t.Defaults.CAPath))
dst.CAFile = stringValWithDefault(src.CAFile, stringVal(t.Defaults.CAFile))
dst.CertFile = stringValWithDefault(src.CertFile, stringVal(t.Defaults.CertFile))
dst.KeyFile = stringValWithDefault(src.KeyFile, stringVal(t.Defaults.KeyFile))
dst.VerifyIncoming = boolValWithDefault(src.VerifyIncoming, boolVal(t.Defaults.VerifyIncoming))
// We prevent this from being set explicity in the tls.grpc stanza above, but
// let's also prevent it from getting the tls.defaults value to avoid confusion
// if we decide to support it in the future.
if name != "grpc" {
dst.VerifyOutgoing = boolValWithDefault(src.VerifyOutgoing, boolVal(t.Defaults.VerifyOutgoing))
}
if src.TLSMinVersion == nil {
dst.TLSMinVersion = defaultTLSMinVersion
} else {
dst.TLSMinVersion = b.tlsVersion(
fmt.Sprintf("tls.%s.tls_min_version", name),
src.TLSMinVersion,
)
}
if src.TLSCipherSuites == nil {
// If cipher suite config incompatible with a specified TLS min version
// would be inherited, omit it but don't return an error in the builder.
if validateTLSVersionCipherSuitesCompat(dst.TLSMinVersion) == nil {
dst.CipherSuites = defaultCipherSuites
}
} else {
dst.CipherSuites = b.tlsCipherSuites(
fmt.Sprintf("tls.%s.tls_cipher_suites", name),
src.TLSCipherSuites,
dst.TLSMinVersion,
)
}
}
mapCommon("internal_rpc", t.InternalRPC, &c.InternalRPC)
c.InternalRPC.VerifyServerHostname = boolVal(t.InternalRPC.VerifyServerHostname)
// Setting only verify_server_hostname is documented to imply verify_outgoing.
// If it doesn't then we risk sending communication over plain TCP when we
// documented it as forcing TLS for RPCs. Enforce this here rather than in
// several different places through the code that need to reason about it.
//
// See: CVE-2018-19653
c.InternalRPC.VerifyOutgoing = c.InternalRPC.VerifyOutgoing || c.InternalRPC.VerifyServerHostname
mapCommon("https", t.HTTPS, &c.HTTPS)
mapCommon("grpc", t.GRPC, &c.GRPC)
c.GRPC.UseAutoCert = boolValWithDefault(t.GRPC.UseAutoCert, false)
c.ServerMode = rt.ServerMode
c.ServerName = rt.ServerName
c.NodeName = rt.NodeName
c.Domain = rt.DNSDomain
c.EnableAgentTLSForChecks = rt.EnableAgentTLSForChecks
c.AutoTLS = rt.AutoEncryptTLS || rt.AutoConfig.Enabled
return c, nil
}
func (b *builder) parsePrefixFilter(telemetry *Telemetry) ([]string, []string) {
var telemetryAllowedPrefixes, telemetryBlockedPrefixes []string
// TODO(FFMMM): Once one twelve style RPC metrics get out of Beta, don't remove them by default.
operatorPassedOneTwelveRPCMetric := false
oneTwelveRPCMetric := *telemetry.MetricsPrefix + "." + strings.Join(middleware.OneTwelveRPCSummary[0].Name, ".")
for _, rule := range telemetry.PrefixFilter {
if rule == "" {
b.warn("Cannot have empty filter rule in prefix_filter")
continue
}
switch rule[0] {
case '+':
if rule[1:] == oneTwelveRPCMetric {
operatorPassedOneTwelveRPCMetric = true
}
telemetryAllowedPrefixes = append(telemetryAllowedPrefixes, rule[1:])
case '-':
if rule[1:] == oneTwelveRPCMetric {
operatorPassedOneTwelveRPCMetric = true
}
telemetryBlockedPrefixes = append(telemetryBlockedPrefixes, rule[1:])
default:
b.warn("Filter rule must begin with either '+' or '-': %q", rule)
}
}
if !operatorPassedOneTwelveRPCMetric {
telemetryBlockedPrefixes = append(telemetryBlockedPrefixes, oneTwelveRPCMetric)
}
return telemetryAllowedPrefixes, telemetryBlockedPrefixes
}
func (b *builder) raftLogStoreConfigVal(raw *RaftLogStoreRaw) consul.RaftLogStoreConfig {
var cfg consul.RaftLogStoreConfig
if raw != nil {
cfg.Backend = stringValWithDefault(raw.Backend, consul.LogStoreBackendBoltDB)
cfg.DisableLogCache = boolVal(raw.DisableLogCache)
cfg.Verification.Enabled = boolVal(raw.Verification.Enabled)
cfg.Verification.Interval = b.durationVal("raft_logstore.verification.interval", raw.Verification.Interval)
cfg.BoltDB.NoFreelistSync = boolVal(raw.BoltDBConfig.NoFreelistSync)
cfg.WAL.SegmentSize = intVal(raw.WALConfig.SegmentSizeMB) * 1024 * 1024
}
return cfg
}
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