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Clarify some comments and names around CA bootstrapping

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pull/4275/head
Kyle Havlovitz 7 years ago committed by Mitchell Hashimoto
parent 18a34c6836
commit a325388939
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GPG Key ID: 744E147AA52F5B0A
8 changed files with 80 additions and 74 deletions
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4
agent/connect/ca_provider.go
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@ -29,8 +29,8 @@ type CAProvider interface {
// SignCA signs a CA CSR and returns the resulting cross-signed cert.
SignCA(*x509.CertificateRequest) (string, error)
// Teardown performs any necessary cleanup that should happen when the provider
// Cleanup performs any necessary cleanup that should happen when the provider
// is shut down permanently, such as removing a temporary PKI backend in Vault
// created for an intermediate CA.
Teardown() error
Cleanup() error
}

22
agent/consul/connect_ca_endpoint.go
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@ -52,7 +52,7 @@ func (s *ConnectCA) ConfigurationSet(
return err
}
// This action requires operator read access.
// This action requires operator write access.
rule, err := s.srv.resolveToken(args.Token)
if err != nil {
return err
@ -133,7 +133,7 @@ func (s *ConnectCA) ConfigurationSet(
}
// Add the cross signed cert to the new root's intermediates
newActiveRoot.Intermediates = []string{xcCert}
newActiveRoot.IntermediateCerts = []string{xcCert}
// Update the roots and CA config in the state store at the same time
idx, roots, err := state.CARoots(nil)
@ -166,11 +166,11 @@ func (s *ConnectCA) ConfigurationSet(
// and call teardown on the old provider
s.srv.setCAProvider(newProvider)
if err := oldProvider.Teardown(); err != nil {
return err
if err := oldProvider.Cleanup(); err != nil {
s.srv.logger.Printf("[WARN] connect: failed to clean up old provider %q", config.Provider)
}
s.srv.logger.Printf("[INFO] connect: CA rotated to the new root under %q provider", args.Config.Provider)
s.srv.logger.Printf("[INFO] connect: CA rotated to new root under provider %q", args.Config.Provider)
return nil
}
@ -205,12 +205,12 @@ func (s *ConnectCA) Roots(
// directly to the structure in the memdb store.
reply.Roots[i] = &structs.CARoot{
ID: r.ID,
Name: r.Name,
RootCert: r.RootCert,
Intermediates: r.Intermediates,
RaftIndex: r.RaftIndex,
Active: r.Active,
ID: r.ID,
Name: r.Name,
RootCert: r.RootCert,
IntermediateCerts: r.IntermediateCerts,
RaftIndex: r.RaftIndex,
Active: r.Active,
}
if r.Active {

8
agent/consul/connect_ca_provider.go
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@ -167,7 +167,7 @@ func (c *ConsulCAProvider) GenerateIntermediate() (*structs.CARoot, *x509.Certif
return nil, nil, err
}
id := &connect.SpiffeIDSigning{ClusterID: config.ClusterSerial, Domain: "consul"}
id := &connect.SpiffeIDSigning{ClusterID: config.ClusterID, Domain: "consul"}
template := &x509.CertificateRequest{
URIs: []*url.URL{id.URI()},
}
@ -198,7 +198,7 @@ func (c *ConsulCAProvider) GenerateIntermediate() (*structs.CARoot, *x509.Certif
}
// Remove the state store entry for this provider instance.
func (c *ConsulCAProvider) Teardown() error {
func (c *ConsulCAProvider) Cleanup() error {
args := &structs.CARequest{
Op: structs.CAOpDeleteProviderState,
ProviderState: &structs.CAConsulProviderState{ID: c.id},
@ -336,7 +336,7 @@ func (c *ConsulCAProvider) SignCA(csr *x509.CertificateRequest) (string, error)
if err != nil {
return "", err
}
id := &connect.SpiffeIDSigning{ClusterID: config.ClusterSerial, Domain: "consul"}
id := &connect.SpiffeIDSigning{ClusterID: config.ClusterID, Domain: "consul"}
keyId, err := connect.KeyId(privKey.Public())
if err != nil {
return "", err
@ -423,7 +423,7 @@ func (c *ConsulCAProvider) generateCA(privateKey, contents string, sn uint64) (*
if pemContents == "" {
// The URI (SPIFFE compatible) for the cert
id := &connect.SpiffeIDSigning{ClusterID: config.ClusterSerial, Domain: "consul"}
id := &connect.SpiffeIDSigning{ClusterID: config.ClusterID, Domain: "consul"}
keyId, err := connect.KeyId(privKey.Public())
if err != nil {
return nil, err

2
agent/consul/fsm/commands_oss_test.go
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@ -1251,7 +1251,7 @@ func TestFSM_CAConfig(t *testing.T) {
if err != nil {
t.Fatalf("err: %v", err)
}
var conf *connect.ConsulCAProviderConfig
var conf *structs.ConsulCAProviderConfig
if err := mapstructure.WeakDecode(config.Config, &conf); err != nil {
t.Fatalf("error decoding config: %s, %v", err, config.Config)
}

28
agent/consul/leader.go
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@ -7,16 +7,15 @@ import (
"sync"
"time"
"github.com/hashicorp/consul/agent/connect"
uuid "github.com/hashicorp/go-uuid"
"github.com/armon/go-metrics"
"github.com/hashicorp/consul/acl"
"github.com/hashicorp/consul/agent/connect"
"github.com/hashicorp/consul/agent/consul/autopilot"
"github.com/hashicorp/consul/agent/metadata"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/api"
"github.com/hashicorp/consul/types"
uuid "github.com/hashicorp/go-uuid"
"github.com/hashicorp/go-version"
"github.com/hashicorp/raft"
"github.com/hashicorp/serf/serf"
@ -215,7 +214,7 @@ func (s *Server) establishLeadership() error {
s.autopilot.Start()
// todo(kyhavlov): start a goroutine here for handling periodic CA rotation
s.bootstrapCA()
s.initializeCA()
s.setConsistentReadReady()
return nil
@ -366,8 +365,9 @@ func (s *Server) getOrCreateAutopilotConfig() *autopilot.Config {
return config
}
// getOrCreateCAConfig is used to get the CA config, initializing it if necessary
func (s *Server) getOrCreateCAConfig() (*structs.CAConfiguration, error) {
// initializeCAConfig is used to initialize the CA config if necessary
// when setting up the CA during establishLeadership
func (s *Server) initializeCAConfig() (*structs.CAConfiguration, error) {
state := s.fsm.State()
_, config, err := state.CAConfig()
if err != nil {
@ -377,13 +377,13 @@ func (s *Server) getOrCreateCAConfig() (*structs.CAConfiguration, error) {
return config, nil
}
sn, err := uuid.GenerateUUID()
id, err := uuid.GenerateUUID()
if err != nil {
return nil, err
}
config = s.config.CAConfig
config.ClusterSerial = sn
config.ClusterID = id
req := structs.CARequest{
Op: structs.CAOpSetConfig,
Config: config,
@ -395,9 +395,10 @@ func (s *Server) getOrCreateCAConfig() (*structs.CAConfiguration, error) {
return config, nil
}
// bootstrapCA creates a CA provider from the current configuration.
func (s *Server) bootstrapCA() error {
conf, err := s.getOrCreateCAConfig()
// initializeCA sets up the CA provider when gaining leadership, bootstrapping
// the root in the state store if necessary.
func (s *Server) initializeCA() error {
conf, err := s.initializeCAConfig()
if err != nil {
return err
}
@ -424,7 +425,10 @@ func (s *Server) bootstrapCA() error {
if err != nil {
return err
}
if root != nil && root.ID == trustedCA.ID {
if root != nil {
if root.ID != trustedCA.ID {
s.logger.Printf("[WARN] connect: CA root %q is not the active root (%q)", trustedCA.ID, root.ID)
}
return nil
}

6
agent/consul/server.go
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@ -17,9 +17,8 @@ import (
"sync/atomic"
"time"
"github.com/hashicorp/consul/agent/connect"
"github.com/hashicorp/consul/acl"
"github.com/hashicorp/consul/agent/connect"
"github.com/hashicorp/consul/agent/consul/autopilot"
"github.com/hashicorp/consul/agent/consul/fsm"
"github.com/hashicorp/consul/agent/consul/state"
@ -98,7 +97,8 @@ type Server struct {
// autopilotWaitGroup is used to block until Autopilot shuts down.
autopilotWaitGroup sync.WaitGroup
// caProvider is the current CA provider in use for Connect.
// caProvider is the current CA provider in use for Connect. This is
// only non-nil when we are the leader.
caProvider connect.CAProvider
caProviderLock sync.RWMutex

76
agent/consul/state/connect_ca.go
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@ -8,17 +8,38 @@ import (
)
const (
caConfigTableName = "connect-ca-config"
caRootTableName = "connect-ca-roots"
caProviderTableName = "connect-ca-builtin"
caBuiltinProviderTableName = "connect-ca-builtin"
caConfigTableName = "connect-ca-config"
caRootTableName = "connect-ca-roots"
)
// caBuiltinProviderTableSchema returns a new table schema used for storing
// the built-in CA provider's state for connect. This is only used by
// the internal Consul CA provider.
func caBuiltinProviderTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: caBuiltinProviderTableName,
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.StringFieldIndex{
Field: "ID",
},
},
},
}
}
// caConfigTableSchema returns a new table schema used for storing
// the CA config for Connect.
func caConfigTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: caConfigTableName,
Indexes: map[string]*memdb.IndexSchema{
// This table only stores one row, so this just ignores the ID field
// and always overwrites the same config object.
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: true,
@ -49,29 +70,10 @@ func caRootTableSchema() *memdb.TableSchema {
}
}
// caProviderTableSchema returns a new table schema used for storing
// the built-in CA provider's state for connect. This is only used by
// the internal Consul CA provider.
func caProviderTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: caProviderTableName,
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.StringFieldIndex{
Field: "ID",
},
},
},
}
}
func init() {
registerSchema(caBuiltinProviderTableSchema)
registerSchema(caConfigTableSchema)
registerSchema(caRootTableSchema)
registerSchema(caProviderTableSchema)
}
// CAConfig is used to pull the CA config from the snapshot.
@ -170,7 +172,7 @@ func (s *Store) caSetConfigTxn(idx uint64, tx *memdb.Txn, config *structs.CAConf
if prev != nil {
existing := prev.(*structs.CAConfiguration)
config.CreateIndex = existing.CreateIndex
config.ClusterSerial = existing.ClusterSerial
config.ClusterID = existing.ClusterID
} else {
config.CreateIndex = idx
}
@ -319,7 +321,7 @@ func (s *Store) CARootSetCAS(idx, cidx uint64, rs []*structs.CARoot) (bool, erro
// CAProviderState is used to pull the built-in provider state from the snapshot.
func (s *Snapshot) CAProviderState() (*structs.CAConsulProviderState, error) {
c, err := s.tx.First(caProviderTableName, "id")
c, err := s.tx.First(caBuiltinProviderTableName, "id")
if err != nil {
return nil, err
}
@ -334,7 +336,7 @@ func (s *Snapshot) CAProviderState() (*structs.CAConsulProviderState, error) {
// CAProviderState is used when restoring from a snapshot.
func (s *Restore) CAProviderState(state *structs.CAConsulProviderState) error {
if err := s.tx.Insert(caProviderTableName, state); err != nil {
if err := s.tx.Insert(caBuiltinProviderTableName, state); err != nil {
return fmt.Errorf("failed restoring built-in CA state: %s", err)
}
@ -347,10 +349,10 @@ func (s *Store) CAProviderState(id string) (uint64, *structs.CAConsulProviderSta
defer tx.Abort()
// Get the index
idx := maxIndexTxn(tx, caProviderTableName)
idx := maxIndexTxn(tx, caBuiltinProviderTableName)
// Get the provider config
c, err := tx.First(caProviderTableName, "id", id)
c, err := tx.First(caBuiltinProviderTableName, "id", id)
if err != nil {
return 0, nil, fmt.Errorf("failed built-in CA state lookup: %s", err)
}
@ -369,10 +371,10 @@ func (s *Store) CAProviderStates() (uint64, []*structs.CAConsulProviderState, er
defer tx.Abort()
// Get the index
idx := maxIndexTxn(tx, caProviderTableName)
idx := maxIndexTxn(tx, caBuiltinProviderTableName)
// Get all
iter, err := tx.Get(caProviderTableName, "id")
iter, err := tx.Get(caBuiltinProviderTableName, "id")
if err != nil {
return 0, nil, fmt.Errorf("failed CA provider state lookup: %s", err)
}
@ -390,7 +392,7 @@ func (s *Store) CASetProviderState(idx uint64, state *structs.CAConsulProviderSt
defer tx.Abort()
// Check for an existing config
existing, err := tx.First(caProviderTableName, "id", state.ID)
existing, err := tx.First(caBuiltinProviderTableName, "id", state.ID)
if err != nil {
return false, fmt.Errorf("failed built-in CA state lookup: %s", err)
}
@ -403,12 +405,12 @@ func (s *Store) CASetProviderState(idx uint64, state *structs.CAConsulProviderSt
}
state.ModifyIndex = idx
if err := tx.Insert(caProviderTableName, state); err != nil {
if err := tx.Insert(caBuiltinProviderTableName, state); err != nil {
return false, fmt.Errorf("failed updating built-in CA state: %s", err)
}
// Update the index
if err := tx.Insert("index", &IndexEntry{caProviderTableName, idx}); err != nil {
if err := tx.Insert("index", &IndexEntry{caBuiltinProviderTableName, idx}); err != nil {
return false, fmt.Errorf("failed updating index: %s", err)
}
@ -423,10 +425,10 @@ func (s *Store) CADeleteProviderState(id string) error {
defer tx.Abort()
// Get the index
idx := maxIndexTxn(tx, caProviderTableName)
idx := maxIndexTxn(tx, caBuiltinProviderTableName)
// Check for an existing config
existing, err := tx.First(caProviderTableName, "id", id)
existing, err := tx.First(caBuiltinProviderTableName, "id", id)
if err != nil {
return fmt.Errorf("failed built-in CA state lookup: %s", err)
}
@ -437,10 +439,10 @@ func (s *Store) CADeleteProviderState(id string) error {
providerState := existing.(*structs.CAConsulProviderState)
// Do the delete and update the index
if err := tx.Delete(caProviderTableName, providerState); err != nil {
if err := tx.Delete(caBuiltinProviderTableName, providerState); err != nil {
return err
}
if err := tx.Insert("index", &IndexEntry{caProviderTableName, idx}); err != nil {
if err := tx.Insert("index", &IndexEntry{caBuiltinProviderTableName, idx}); err != nil {
return fmt.Errorf("failed updating index: %s", err)
}

8
agent/structs/connect_ca.go
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@ -31,9 +31,9 @@ type CARoot struct {
// RootCert is the PEM-encoded public certificate.
RootCert string
// Intermediates is a list of PEM-encoded intermediate certs to
// IntermediateCerts is a list of PEM-encoded intermediate certs to
// attach to any leaf certs signed by this CA.
Intermediates []string
IntermediateCerts []string
// SigningCert is the PEM-encoded signing certificate and SigningKey
// is the PEM-encoded private key for the signing certificate. These
@ -146,8 +146,8 @@ const (
// CAConfiguration is the configuration for the current CA plugin.
type CAConfiguration struct {
// Unique identifier for the cluster
ClusterSerial string `json:"-"`
// ClusterID is a unique identifier for the cluster
ClusterID string `json:"-"`
// Provider is the CA provider implementation to use.
Provider string

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