diff --git a/.changelog/18381.txt b/.changelog/18381.txt new file mode 100644 index 0000000000..f6af62993f --- /dev/null +++ b/.changelog/18381.txt @@ -0,0 +1,6 @@ +```release-note:improvement +checks: It is now possible to configure agent TCP checks to use TLS with +optional server SNI and mutual authentication. To use TLS with a TCP check, the +check must enable the `tcp_use_tls` boolean. By default the agent will use the +TLS configuration in the `tls.default` stanza. +``` diff --git a/agent/agent.go b/agent/agent.go index dead6b3869..a85fead582 100644 --- a/agent/agent.go +++ b/agent/agent.go @@ -3066,14 +3066,20 @@ func (a *Agent) addCheck(check *structs.HealthCheck, chkType *structs.CheckType, chkType.Interval = checks.MinInterval } + var tlsClientConfig *tls.Config + if chkType.TCPUseTLS { + tlsClientConfig = a.tlsConfigurator.OutgoingTLSConfigForCheck(chkType.TLSSkipVerify, chkType.TLSServerName) + } + tcp := &checks.CheckTCP{ - CheckID: cid, - ServiceID: sid, - TCP: chkType.TCP, - Interval: chkType.Interval, - Timeout: chkType.Timeout, - Logger: a.logger, - StatusHandler: statusHandler, + CheckID: cid, + ServiceID: sid, + TCP: chkType.TCP, + Interval: chkType.Interval, + Timeout: chkType.Timeout, + Logger: a.logger, + TLSClientConfig: tlsClientConfig, + StatusHandler: statusHandler, } tcp.Start() a.checkTCPs[cid] = tcp diff --git a/agent/agent_test.go b/agent/agent_test.go index c597f1d5d5..f3932c792d 100644 --- a/agent/agent_test.go +++ b/agent/agent_test.go @@ -14,11 +14,7 @@ import ( "encoding/json" "errors" "fmt" - "github.com/hashicorp/consul/agent/grpc-external/limiter" - "github.com/hashicorp/consul/agent/proxycfg" - "github.com/hashicorp/consul/agent/proxycfg-sources/local" - "github.com/hashicorp/consul/agent/xds" - proxytracker "github.com/hashicorp/consul/internal/mesh/proxy-tracker" + "io" mathrand "math/rand" "net" "net/http" @@ -34,6 +30,12 @@ import ( "testing" "time" + "github.com/hashicorp/consul/agent/grpc-external/limiter" + "github.com/hashicorp/consul/agent/proxycfg" + "github.com/hashicorp/consul/agent/proxycfg-sources/local" + "github.com/hashicorp/consul/agent/xds" + proxytracker "github.com/hashicorp/consul/internal/mesh/proxy-tracker" + "github.com/google/go-cmp/cmp" "github.com/google/go-cmp/cmp/cmpopts" "github.com/google/tcpproxy" @@ -973,6 +975,80 @@ func TestAgent_AddServiceWithH2CPINGCheck(t *testing.T) { requireCheckExists(t, a, "test-h2cping-check") } +func startMockTLSServer(t *testing.T) (addr string, closeFunc func() error) { + // Load certificates + cert, err := tls.LoadX509KeyPair("../test/key/ourdomain_server.cer", "../test/key/ourdomain_server.key") + require.NoError(t, err) + // Create a certificate pool + rootCertPool := x509.NewCertPool() + caCert, err := os.ReadFile("../test/ca/root.cer") + require.NoError(t, err) + rootCertPool.AppendCertsFromPEM(caCert) + // Configure TLS + config := &tls.Config{ + Certificates: []tls.Certificate{cert}, + ClientAuth: tls.RequireAndVerifyClientCert, + ClientCAs: rootCertPool, + } + // Start TLS server + ln, err := tls.Listen("tcp", "127.0.0.1:0", config) + require.NoError(t, err) + go func() { + for { + conn, err := ln.Accept() + if err != nil { + return + } + io.Copy(io.Discard, conn) + conn.Close() + } + }() + return ln.Addr().String(), ln.Close +} + +func TestAgent_AddServiceWithTCPTLSCheck(t *testing.T) { + t.Parallel() + dataDir := testutil.TempDir(t, "agent") + a := NewTestAgent(t, ` + data_dir = "`+dataDir+`" + enable_agent_tls_for_checks = true + datacenter = "dc1" + tls { + defaults { + ca_file = "../test/ca/root.cer" + cert_file = "../test/key/ourdomain_server.cer" + key_file = "../test/key/ourdomain_server.key" + } + } + `) + defer a.Shutdown() + testrpc.WaitForTestAgent(t, a.RPC, "dc1") + // Start mock TCP+TLS server + addr, closeServer := startMockTLSServer(t) + defer closeServer() + check := &structs.HealthCheck{ + Node: "foo", + CheckID: "arbitraryTCPServerTLSCheck", + Name: "arbitraryTCPServerTLSCheck", + Status: api.HealthCritical, + } + chkType := &structs.CheckType{ + TCP: addr, + TCPUseTLS: true, + TLSServerName: "server.dc1.consul", + Interval: 5 * time.Second, + } + err := a.AddCheck(check, chkType, false, "", ConfigSourceLocal) + require.NoError(t, err) + // Retry until the healthcheck is passing. + retry.Run(t, func(r *retry.R) { + status := getCheck(a, "arbitraryTCPServerTLSCheck") + if status.Status != api.HealthPassing { + r.Fatalf("bad: %v", status.Status) + } + }) +} + func TestAgent_AddServiceNoExec(t *testing.T) { if testing.Short() { t.Skip("too slow for testing.Short") @@ -4308,7 +4384,7 @@ func TestAgent_consulConfig_RequestLimits(t *testing.T) { t.Parallel() hcl := ` - limits { + limits { request_limits { mode = "enforcing" read_rate = 8888 @@ -6278,7 +6354,7 @@ func TestAgent_scadaProvider(t *testing.T) { }, Overrides: ` cloud { - resource_id = "organization/0b9de9a3-8403-4ca6-aba8-fca752f42100/project/0b9de9a3-8403-4ca6-aba8-fca752f42100/consul.cluster/0b9de9a3-8403-4ca6-aba8-fca752f42100" + resource_id = "organization/0b9de9a3-8403-4ca6-aba8-fca752f42100/project/0b9de9a3-8403-4ca6-aba8-fca752f42100/consul.cluster/0b9de9a3-8403-4ca6-aba8-fca752f42100" client_id = "test" client_secret = "test" }`, diff --git a/agent/checks/check.go b/agent/checks/check.go index 0c730b5109..cabecddcf5 100644 --- a/agent/checks/check.go +++ b/agent/checks/check.go @@ -625,19 +625,20 @@ func (c *CheckH2PING) Start() { go c.run() } -// CheckTCP is used to periodically make an TCP/UDP connection to -// determine the health of a given check. +// CheckTCP is used to periodically make a TCP connection to determine the +// health of a given check. // The check is passing if the connection succeeds // The check is critical if the connection returns an error // Supports failures_before_critical and success_before_passing. type CheckTCP struct { - CheckID structs.CheckID - ServiceID structs.ServiceID - TCP string - Interval time.Duration - Timeout time.Duration - Logger hclog.Logger - StatusHandler *StatusHandler + CheckID structs.CheckID + ServiceID structs.ServiceID + TCP string + Interval time.Duration + Timeout time.Duration + Logger hclog.Logger + TLSClientConfig *tls.Config + StatusHandler *StatusHandler dialer *net.Dialer stop bool @@ -694,17 +695,30 @@ func (c *CheckTCP) run() { // check is invoked periodically to perform the TCP check func (c *CheckTCP) check() { - conn, err := c.dialer.Dial(`tcp`, c.TCP) + var conn io.Closer + var err error + var checkType string + + if c.TLSClientConfig == nil { + conn, err = c.dialer.Dial(`tcp`, c.TCP) + checkType = "TCP" + } else { + conn, err = tls.DialWithDialer(c.dialer, `tcp`, c.TCP, c.TLSClientConfig) + checkType = "TCP+TLS" + } + if err != nil { - c.Logger.Warn("Check socket connection failed", + c.Logger.Warn(fmt.Sprintf("Check %s connection failed", checkType), "check", c.CheckID.String(), "error", err, ) c.StatusHandler.updateCheck(c.CheckID, api.HealthCritical, err.Error()) return } + conn.Close() - c.StatusHandler.updateCheck(c.CheckID, api.HealthPassing, fmt.Sprintf("TCP connect %s: Success", c.TCP)) + c.StatusHandler.updateCheck(c.CheckID, api.HealthPassing, fmt.Sprintf("%s connect %s: Success", checkType, c.TCP)) + } // CheckUDP is used to periodically send a UDP datagram to determine the health of a given check. diff --git a/agent/config/builder.go b/agent/config/builder.go index a3ca1abfd0..e674096351 100644 --- a/agent/config/builder.go +++ b/agent/config/builder.go @@ -1618,6 +1618,7 @@ func (b *builder) checkVal(v *CheckDefinition) *structs.CheckDefinition { Body: stringVal(v.Body), DisableRedirects: boolVal(v.DisableRedirects), TCP: stringVal(v.TCP), + TCPUseTLS: boolVal(v.TCPUseTLS), UDP: stringVal(v.UDP), Interval: b.durationVal(fmt.Sprintf("check[%s].interval", id), v.Interval), DockerContainerID: stringVal(v.DockerContainerID), diff --git a/agent/config/config.go b/agent/config/config.go index baaa180519..91db8e42a1 100644 --- a/agent/config/config.go +++ b/agent/config/config.go @@ -423,6 +423,7 @@ type CheckDefinition struct { DisableRedirects *bool `mapstructure:"disable_redirects"` OutputMaxSize *int `mapstructure:"output_max_size"` TCP *string `mapstructure:"tcp"` + TCPUseTLS *bool `mapstructure:"tcp_use_tls"` UDP *string `mapstructure:"udp"` Interval *string `mapstructure:"interval"` DockerContainerID *string `mapstructure:"docker_container_id" alias:"dockercontainerid"` diff --git a/agent/config/runtime_test.go b/agent/config/runtime_test.go index e39557b3d4..d71bb50889 100644 --- a/agent/config/runtime_test.go +++ b/agent/config/runtime_test.go @@ -2357,12 +2357,12 @@ func TestLoad_IntegrationWithFlags(t *testing.T) { }, json: []string{`{ "cloud": { - "resource_id": "file-id" + "resource_id": "file-id" } }`}, hcl: []string{` cloud = { - resource_id = "file-id" + resource_id = "file-id" } `}, expected: func(rt *RuntimeConfig) { @@ -2529,6 +2529,60 @@ func TestLoad_IntegrationWithFlags(t *testing.T) { rt.DataDir = dataDir }, }) + run(t, testCase{ + desc: "tcp check with tcp_use_tls set", + args: []string{ + `-data-dir=` + dataDir, + }, + json: []string{ + `{ "check": { "name": "a", "tcp": "localhost:55555", "tcp_use_tls": true, "interval": "5s" } }`, + }, + hcl: []string{ + `check = { name = "a" tcp = "localhost:55555" tcp_use_tls = true interval = "5s" }`, + }, + expected: func(rt *RuntimeConfig) { + rt.Checks = []*structs.CheckDefinition{ + {Name: "a", TCP: "localhost:55555", TCPUseTLS: true, OutputMaxSize: checks.DefaultBufSize, Interval: 5 * time.Second}, + } + rt.DataDir = dataDir + }, + }) + run(t, testCase{ + desc: "tcp check with tcp_use_tls set to false", + args: []string{ + `-data-dir=` + dataDir, + }, + json: []string{ + `{ "check": { "name": "a", "tcp": "localhost:55555", "tcp_use_tls": false, "interval": "5s" } }`, + }, + hcl: []string{ + `check = { name = "a" tcp = "localhost:55555" tcp_use_tls = false interval = "5s" }`, + }, + expected: func(rt *RuntimeConfig) { + rt.Checks = []*structs.CheckDefinition{ + {Name: "a", TCP: "localhost:55555", TCPUseTLS: false, OutputMaxSize: checks.DefaultBufSize, Interval: 5 * time.Second}, + } + rt.DataDir = dataDir + }, + }) + run(t, testCase{ + desc: "tcp check with tcp_use_tls not set", + args: []string{ + `-data-dir=` + dataDir, + }, + json: []string{ + `{ "check": { "name": "a", "tcp": "localhost:55555", "interval": "5s" } }`, + }, + hcl: []string{ + `check = { name = "a" tcp = "localhost:55555" interval = "5s" }`, + }, + expected: func(rt *RuntimeConfig) { + rt.Checks = []*structs.CheckDefinition{ + {Name: "a", TCP: "localhost:55555", TCPUseTLS: false, OutputMaxSize: checks.DefaultBufSize, Interval: 5 * time.Second}, + } + rt.DataDir = dataDir + }, + }) run(t, testCase{ desc: "h2ping check without h2ping_use_tls set", args: []string{ @@ -6287,6 +6341,7 @@ func TestLoad_FullConfig(t *testing.T) { Body: "wSjTy7dg", DisableRedirects: true, TCP: "RJQND605", + TCPUseTLS: false, H2PING: "9N1cSb5B", H2PingUseTLS: false, OSService: "aAjE6m9Z", @@ -6317,6 +6372,7 @@ func TestLoad_FullConfig(t *testing.T) { DisableRedirects: false, OutputMaxSize: checks.DefaultBufSize, TCP: "4jG5casb", + TCPUseTLS: false, H2PING: "HCHU7gEb", H2PingUseTLS: false, OSService: "aqq95BhP", @@ -6346,6 +6402,7 @@ func TestLoad_FullConfig(t *testing.T) { DisableRedirects: true, OutputMaxSize: checks.DefaultBufSize, TCP: "JY6fTTcw", + TCPUseTLS: false, H2PING: "rQ8eyCSF", H2PingUseTLS: false, OSService: "aZaCAXww", diff --git a/agent/config/testdata/TestRuntimeConfig_Sanitize.golden b/agent/config/testdata/TestRuntimeConfig_Sanitize.golden index 6bb08ff95f..e339923dc9 100644 --- a/agent/config/testdata/TestRuntimeConfig_Sanitize.golden +++ b/agent/config/testdata/TestRuntimeConfig_Sanitize.golden @@ -117,6 +117,7 @@ "Status": "", "SuccessBeforePassing": 0, "TCP": "", + "TCPUseTLS": false, "TLSServerName": "", "TLSSkipVerify": false, "TTL": "0s", @@ -368,6 +369,7 @@ "Status": "", "SuccessBeforePassing": 0, "TCP": "", + "TCPUseTLS": false, "TLSServerName": "", "TLSSkipVerify": false, "TTL": "0s", diff --git a/agent/structs/check_definition.go b/agent/structs/check_definition.go index ec76083260..0b04290e70 100644 --- a/agent/structs/check_definition.go +++ b/agent/structs/check_definition.go @@ -36,6 +36,7 @@ type CheckDefinition struct { Body string DisableRedirects bool TCP string + TCPUseTLS bool UDP string Interval time.Duration DockerContainerID string @@ -76,6 +77,7 @@ func (t *CheckDefinition) UnmarshalJSON(data []byte) (err error) { DockerContainerIDSnake string `json:"docker_container_id"` TLSServerNameSnake string `json:"tls_server_name"` TLSSkipVerifySnake bool `json:"tls_skip_verify"` + TCPUseTLSSnake bool `json:"tcp_use_tls"` GRPCUseTLSSnake bool `json:"grpc_use_tls"` ServiceIDSnake string `json:"service_id"` H2PingUseTLSSnake bool `json:"h2ping_use_tls"` @@ -119,6 +121,9 @@ func (t *CheckDefinition) UnmarshalJSON(data []byte) (err error) { if aux.TLSSkipVerifySnake { t.TLSSkipVerify = aux.TLSSkipVerifySnake } + if aux.TCPUseTLSSnake { + t.TCPUseTLS = aux.TCPUseTLSSnake + } if aux.GRPCUseTLSSnake { t.GRPCUseTLS = aux.GRPCUseTLSSnake } @@ -220,6 +225,7 @@ func (c *CheckDefinition) CheckType() *CheckType { DisableRedirects: c.DisableRedirects, OutputMaxSize: c.OutputMaxSize, TCP: c.TCP, + TCPUseTLS: c.TCPUseTLS, UDP: c.UDP, Interval: c.Interval, DockerContainerID: c.DockerContainerID, diff --git a/agent/structs/check_type.go b/agent/structs/check_type.go index 96254f62d8..61a5a762f7 100644 --- a/agent/structs/check_type.go +++ b/agent/structs/check_type.go @@ -42,6 +42,7 @@ type CheckType struct { Body string DisableRedirects bool TCP string + TCPUseTLS bool UDP string Interval time.Duration AliasNode string @@ -87,6 +88,7 @@ func (t *CheckType) UnmarshalJSON(data []byte) (err error) { DockerContainerIDSnake string `json:"docker_container_id"` TLSServerNameSnake string `json:"tls_server_name"` TLSSkipVerifySnake bool `json:"tls_skip_verify"` + TCPUseTLSSnake bool `json:"tcp_use_tls"` GRPCUseTLSSnake bool `json:"grpc_use_tls"` H2PingUseTLSSnake bool `json:"h2ping_use_tls"` @@ -131,6 +133,9 @@ func (t *CheckType) UnmarshalJSON(data []byte) (err error) { if aux.TLSSkipVerifySnake { t.TLSSkipVerify = aux.TLSSkipVerifySnake } + if aux.TCPUseTLSSnake { + t.TCPUseTLS = aux.TCPUseTLSSnake + } if aux.GRPCUseTLSSnake { t.GRPCUseTLS = aux.GRPCUseTLSSnake } diff --git a/agent/structs/structs.go b/agent/structs/structs.go index fbacb36ffe..5a6fd95118 100644 --- a/agent/structs/structs.go +++ b/agent/structs/structs.go @@ -1879,6 +1879,7 @@ type HealthCheckDefinition struct { Body string `json:",omitempty"` DisableRedirects bool `json:",omitempty"` TCP string `json:",omitempty"` + TCPUseTLS bool `json:",omitempty"` UDP string `json:",omitempty"` H2PING string `json:",omitempty"` OSService string `json:",omitempty"` @@ -2031,6 +2032,7 @@ func (c *HealthCheck) CheckType() *CheckType { Body: c.Definition.Body, DisableRedirects: c.Definition.DisableRedirects, TCP: c.Definition.TCP, + TCPUseTLS: c.Definition.TCPUseTLS, UDP: c.Definition.UDP, H2PING: c.Definition.H2PING, OSService: c.Definition.OSService, diff --git a/agent/txn_endpoint.go b/agent/txn_endpoint.go index 10117a53c5..04dcd7fa39 100644 --- a/agent/txn_endpoint.go +++ b/agent/txn_endpoint.go @@ -313,6 +313,7 @@ func (s *HTTPHandlers) convertOps(resp http.ResponseWriter, req *http.Request) ( Method: check.Definition.Method, Body: check.Definition.Body, TCP: check.Definition.TCP, + TCPUseTLS: check.Definition.TCPUseTLS, GRPC: check.Definition.GRPC, GRPCUseTLS: check.Definition.GRPCUseTLS, OSService: check.Definition.OSService, diff --git a/api/agent.go b/api/agent.go index b09ed1c1cd..6775edf425 100644 --- a/api/agent.go +++ b/api/agent.go @@ -345,6 +345,7 @@ type AgentServiceCheck struct { Method string `json:",omitempty"` Body string `json:",omitempty"` TCP string `json:",omitempty"` + TCPUseTLS bool `json:",omitempty"` UDP string `json:",omitempty"` Status string `json:",omitempty"` Notes string `json:",omitempty"` diff --git a/api/health.go b/api/health.go index 932317fdb0..a023002046 100644 --- a/api/health.go +++ b/api/health.go @@ -67,6 +67,7 @@ type HealthCheckDefinition struct { TLSServerName string TLSSkipVerify bool TCP string + TCPUseTLS bool UDP string GRPC string OSService string diff --git a/proto/private/pbservice/healthcheck.gen.go b/proto/private/pbservice/healthcheck.gen.go index 092a4ded9e..1c608d88c7 100644 --- a/proto/private/pbservice/healthcheck.gen.go +++ b/proto/private/pbservice/healthcheck.gen.go @@ -21,6 +21,7 @@ func CheckTypeToStructs(s *CheckType, t *structs.CheckType) { t.Body = s.Body t.DisableRedirects = s.DisableRedirects t.TCP = s.TCP + t.TCPUseTLS = s.TCPUseTLS t.UDP = s.UDP t.Interval = structs.DurationFromProto(s.Interval) t.AliasNode = s.AliasNode @@ -59,6 +60,7 @@ func CheckTypeFromStructs(t *structs.CheckType, s *CheckType) { s.Body = t.Body s.DisableRedirects = t.DisableRedirects s.TCP = t.TCP + s.TCPUseTLS = t.TCPUseTLS s.UDP = t.UDP s.Interval = structs.DurationToProto(t.Interval) s.AliasNode = t.AliasNode @@ -142,6 +144,7 @@ func HealthCheckDefinitionToStructs(s *HealthCheckDefinition, t *structs.HealthC t.Body = s.Body t.DisableRedirects = s.DisableRedirects t.TCP = s.TCP + t.TCPUseTLS = s.TCPUseTLS t.UDP = s.UDP t.H2PING = s.H2PING t.OSService = s.OSService @@ -171,6 +174,7 @@ func HealthCheckDefinitionFromStructs(t *structs.HealthCheckDefinition, s *Healt s.Body = t.Body s.DisableRedirects = t.DisableRedirects s.TCP = t.TCP + s.TCPUseTLS = t.TCPUseTLS s.UDP = t.UDP s.H2PING = t.H2PING s.OSService = t.OSService diff --git a/proto/private/pbservice/healthcheck.pb.go b/proto/private/pbservice/healthcheck.pb.go index ba0edbde9d..0392fd7745 100644 --- a/proto/private/pbservice/healthcheck.pb.go +++ b/proto/private/pbservice/healthcheck.pb.go @@ -279,6 +279,7 @@ type HealthCheckDefinition struct { Body string `protobuf:"bytes,18,opt,name=Body,proto3" json:"Body,omitempty"` DisableRedirects bool `protobuf:"varint,22,opt,name=DisableRedirects,proto3" json:"DisableRedirects,omitempty"` TCP string `protobuf:"bytes,5,opt,name=TCP,proto3" json:"TCP,omitempty"` + TCPUseTLS bool `protobuf:"varint,25,opt,name=TCPUseTLS,proto3" json:"TCPUseTLS,omitempty"` UDP string `protobuf:"bytes,23,opt,name=UDP,proto3" json:"UDP,omitempty"` OSService string `protobuf:"bytes,24,opt,name=OSService,proto3" json:"OSService,omitempty"` // mog: func-to=structs.DurationFromProto func-from=structs.DurationToProto @@ -390,6 +391,13 @@ func (x *HealthCheckDefinition) GetTCP() string { return "" } +func (x *HealthCheckDefinition) GetTCPUseTLS() bool { + if x != nil { + return x.TCPUseTLS + } + return false +} + func (x *HealthCheckDefinition) GetUDP() string { if x != nil { return x.UDP @@ -532,6 +540,7 @@ type CheckType struct { Body string `protobuf:"bytes,26,opt,name=Body,proto3" json:"Body,omitempty"` DisableRedirects bool `protobuf:"varint,31,opt,name=DisableRedirects,proto3" json:"DisableRedirects,omitempty"` TCP string `protobuf:"bytes,8,opt,name=TCP,proto3" json:"TCP,omitempty"` + TCPUseTLS bool `protobuf:"varint,34,opt,name=TCPUseTLS,proto3" json:"TCPUseTLS,omitempty"` UDP string `protobuf:"bytes,32,opt,name=UDP,proto3" json:"UDP,omitempty"` OSService string `protobuf:"bytes,33,opt,name=OSService,proto3" json:"OSService,omitempty"` // mog: func-to=structs.DurationFromProto func-from=structs.DurationToProto @@ -677,6 +686,13 @@ func (x *CheckType) GetTCP() string { return "" } +func (x *CheckType) GetTCPUseTLS() bool { + if x != nil { + return x.TCPUseTLS + } + return false +} + func (x *CheckType) GetUDP() string { if x != nil { return x.UDP @@ -884,7 +900,7 @@ var file_private_pbservice_healthcheck_proto_rawDesc = []byte{ 0x50, 0x65, 0x65, 0x72, 0x4e, 0x61, 0x6d, 0x65, 0x18, 0x11, 0x20, 0x01, 0x28, 0x09, 0x52, 0x08, 0x50, 0x65, 0x65, 0x72, 0x4e, 0x61, 0x6d, 0x65, 0x22, 0x23, 0x0a, 0x0b, 0x48, 0x65, 0x61, 0x64, 0x65, 0x72, 0x56, 0x61, 0x6c, 0x75, 0x65, 0x12, 0x14, 0x0a, 0x05, 0x56, 0x61, 0x6c, 0x75, 0x65, - 0x18, 0x01, 0x20, 0x03, 0x28, 0x09, 0x52, 0x05, 0x56, 0x61, 0x6c, 0x75, 0x65, 0x22, 0x92, 0x08, + 0x18, 0x01, 0x20, 0x03, 0x28, 0x09, 0x52, 0x05, 0x56, 0x61, 0x6c, 0x75, 0x65, 0x22, 0xb0, 0x08, 0x0a, 0x15, 0x48, 0x65, 0x61, 0x6c, 0x74, 0x68, 0x43, 0x68, 0x65, 0x63, 0x6b, 0x44, 0x65, 0x66, 0x69, 0x6e, 0x69, 0x74, 0x69, 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0x6f, 0x6e, 0x73, 0x75, 0x6c, 0x3a, 0x3a, 0x49, 0x6e, 0x74, + 0x65, 0x72, 0x6e, 0x61, 0x6c, 0x3a, 0x3a, 0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x62, 0x06, + 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33, } var ( diff --git a/proto/private/pbservice/healthcheck.proto b/proto/private/pbservice/healthcheck.proto index b3cbf05044..d75a7fc7c7 100644 --- a/proto/private/pbservice/healthcheck.proto +++ b/proto/private/pbservice/healthcheck.proto @@ -66,6 +66,7 @@ message HealthCheckDefinition { string Body = 18; bool DisableRedirects = 22; string TCP = 5; + bool TCPUseTLS = 25; string UDP = 23; string OSService = 24; // mog: func-to=structs.DurationFromProto func-from=structs.DurationToProto @@ -117,6 +118,7 @@ message CheckType { string Body = 26; bool DisableRedirects = 31; string TCP = 8; + bool TCPUseTLS = 34; string UDP = 32; string OSService = 33; // mog: func-to=structs.DurationFromProto func-from=structs.DurationToProto diff --git a/website/content/api-docs/agent/check.mdx b/website/content/api-docs/agent/check.mdx index 03364b6aeb..5faf728629 100644 --- a/website/content/api-docs/agent/check.mdx +++ b/website/content/api-docs/agent/check.mdx @@ -239,6 +239,10 @@ The table below shows this endpoint's support for made to both addresses, and the first successful connection attempt will result in a successful check. +- `TCPUseTLS` `(bool: false)` - Specifies whether to use TLS for this `TCP` health check. + If TLS is enabled, then by default, a valid TLS certificate is expected. Certificate + verification can be turned off by setting `TLSSkipVerify` to `true`. + - `UDP` `(string: "")` - Specifies a `UDP` IP address/hostname and port. The check sends datagrams to the value specified at the interval specified in the `Interval` configuration. If the datagram is sent successfully or a timeout is returned, the check is set to the `passing` state. diff --git a/website/content/docs/dynamic-app-config/watches.mdx b/website/content/docs/dynamic-app-config/watches.mdx index cb6ef64480..64b52be358 100644 --- a/website/content/docs/dynamic-app-config/watches.mdx +++ b/website/content/docs/dynamic-app-config/watches.mdx @@ -535,6 +535,7 @@ An example of the output of this command: "TLSServerName": "", "TLSSkipVerify": false, "TCP": "", + "TCPUseTLS": false, "GRPC": "", "GRPCUseTLS": false }, diff --git a/website/content/docs/ecs/configuration-reference.mdx b/website/content/docs/ecs/configuration-reference.mdx index fed887bc83..8d2aedd735 100644 --- a/website/content/docs/ecs/configuration-reference.mdx +++ b/website/content/docs/ecs/configuration-reference.mdx @@ -189,9 +189,10 @@ Defines the Consul checks for the service. Each `check` object may contain the f | `status` | `string` | optional | Specifies the initial status the health check. Must be one of `passing`, `warning`, `critical`, `maintenance`, or `null`. | | `successBeforePassing` | `integer` | optional | Specifies the number of consecutive successful results required before check status transitions to passing. | | `tcp` | `string` | optional | Specifies this is a TCP check. Must be an IP/hostname plus port to which a TCP connection is made every `interval`. | +| `tcpUseTls` | `boolean` | optional | Specifies whether to use TLS for this `TCP` health check. If TLS is enabled, then by default, a valid TLS certificate is expected. Certificate verification can be disabled by setting `TLSSkipVerify` to `true`. | | `timeout` | `string` | optional | Specifies a timeout for outgoing connections. Applies to script, HTTP, TCP, UDP, and gRPC checks. Must be a duration string, such as `10s` or `5m`. | | `tlsServerName` | `string` | optional | Specifies an optional string used to set the SNI host when connecting via TLS. | -| `tlsSkipVerify` | `boolean` | optional | Specifies if the certificate for an HTTPS check should not be verified. | +| `tlsSkipVerify` | `boolean` | optional | Specifies if the check should verify the chain and hostname of the certificate presented by the server being checked. Set to `true` to disable verification. We recommend setting to `false` for production use. Default is `false`. Supported check types: `HTTP`, `H2Ping`, `gRPC`, and `TCP`| | `ttl` | `string` | optional | Specifies this is a TTL check. Must be a duration string, such as `10s` or `5m`. | | `udp` | `string` | optional | Specifies this is a UDP check. Must be an IP/hostname plus port to which UDP datagrams are sent every `interval`. | diff --git a/website/content/docs/services/configuration/checks-configuration-reference.mdx b/website/content/docs/services/configuration/checks-configuration-reference.mdx index 10934217aa..c842d334b6 100644 --- a/website/content/docs/services/configuration/checks-configuration-reference.mdx +++ b/website/content/docs/services/configuration/checks-configuration-reference.mdx @@ -36,7 +36,7 @@ Specify health check options in the `check` block. To register two or more heath | `h2ping_use_tls` | Boolean value that enables TLS for H2ping checks when set to `true`. |
  • H2ping
    • | | `http` | String value that specifies an HTTP endpoint to send requests to. |
  • HTTP
    • | | `tls_server_name` | String value that specifies the server name used to verify the hostname on the returned certificates unless `tls_skip_verify` is given. Also included in the client's handshake to support SNI. It is recommended that this field be left unspecified. The TLS client will deduce the server name for SNI from the check address unless it's an IP ([RFC 6066, Section 3](https://tools.ietf.org/html/rfc6066#section-3)). There are two common circumstances where supplying a `tls_server_name` can be beneficial:
  • When the check address is an IP, `tls_server_name` can be specified for SNI. Note: setting `tls_server_name` will also override the hostname used to verify the certificate presented by the server being checked.
  • When the hostname in the check address won't be present in the SAN (Subject Alternative Name) field of the certificate presented by the server being checked. Note: setting `tls_server_name` will also override the hostname used for SNI.
    • |
  • HTTP
  • H2Ping
  • gRPC
    • | -| `tls_skip_verify` | Boolean value that determines if the check verifies the chain and hostname of the certificate that the server presents. Set to `true` to disable verification. We recommend setting to `false` for production use. Default is `false`. |
  • HTTP
  • H2Ping
  • gRPC
    • | +| `tls_skip_verify` | Boolean value that determines if the check verifies the chain and hostname of the certificate that the server presents. Set to `true` to disable verification. We recommend setting to `false` for production use. Default is `false`. |
  • HTTP
  • H2Ping
  • gRPC
  • TCP
    • | | `method` | String value that specifies the request method to send during HTTP checks. Default is `GET`. |
  • HTTP
    • | | `header` | Object that specifies header fields to send in HTTP check requests. Each header specified in `header` object contains a list of string values. |
  • HTTP
    • | | `body` | String value that contains JSON attributes to send in HTTP check requests. You must escape the quotation marks around the keys and values for each attribute. |
  • HTTP
    • | @@ -44,6 +44,7 @@ Specify health check options in the `check` block. To register two or more heath | `os_service` | String value that specifies the name of the name of a service to check during an OSService check. |
  • OSService
    • | | `service_id` | String value that specifies the ID of a service instance to associate with an OSService check. That service instance must be on the same node as the check. If not specified, the check verifies the health of the node. |
  • OSService
    • | | `tcp` | String value that specifies an IP address or host and port number for the check establish a TCP connection with. |
  • TCP
    • | +| `tcp_use_tls` | Boolean value that enables TLS for TCP checks when set to `true`. |
  • TCP
    • | | `udp` | String value that specifies an IP address or host and port number for the check to send UDP datagrams to. |
  • UDP
    • | | `ttl` | String value that specifies how long to wait for an update from an external process during a TTL check. |
  • TTL
    • | | `alias_service` | String value that specifies a service or node that the service associated with the health check aliases. |
  • Alias
    • | @@ -52,4 +53,3 @@ Specify health check options in the `check` block. To register two or more heath ## Checks block You can define multiple health checks in a single `checks` block. The `checks` block is an array of objects that contain the configuration options described in the [`check` block configuration reference](#check-block). -