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Add TCP+TLS Healthchecks (#18381) 

* Begin adding TCPUseTLS

* More TCP with TLS plumbing

* Making forward progress

* Keep on adding TCP+TLS support for healthchecks

* Removed too many lines

* Unit tests for TCP+TLS

* Update tlsutil/config.go

Co-authored-by: Samantha <hello@entropy.cat>

* Working on the tcp+tls unit test

* Updated the runtime integration tests

* Progress

* Revert this file back to HEAD

* Remove debugging lines

* Implement TLS enabled TCP socket server and make a successful TCP+TLS healthcheck on it

* Update docs

* Update agent/agent_test.go

Co-authored-by: Samantha <hello@entropy.cat>

* Update website/content/docs/ecs/configuration-reference.mdx

Co-authored-by: Samantha <hello@entropy.cat>

* Update website/content/docs/ecs/configuration-reference.mdx

Co-authored-by: Samantha <hello@entropy.cat>

* Update agent/checks/check.go

Co-authored-by: Samantha <hello@entropy.cat>

* Address comments

* Remove extraneous bracket

* Update agent/agent_test.go

Co-authored-by: Samantha <hello@entropy.cat>

* Update agent/agent_test.go

Co-authored-by: Samantha <hello@entropy.cat>

* Update website/content/docs/ecs/configuration-reference.mdx

Co-authored-by: Samantha <hello@entropy.cat>

* Update the mockTLSServer

* Remove trailing newline

* Address comments

* Fix merge problem

* Add changelog entry

---------

Co-authored-by: Samantha <hello@entropy.cat>
This commit is contained in:
Phil Porada 2023-09-05 16:34:44 -04:00 committed by GitHub
parent 0c184042c5
commit 7ea986783d
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
21 changed files with 385 additions and 174 deletions
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6
.changelog/18381.txt Normal file
View File

@ -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.
```

20
agent/agent.go
View File

@ -3066,14 +3066,20 @@ func (a *Agent) addCheck(check *structs.HealthCheck, chkType *structs.CheckType,
chkType.Interval = checks.MinInterval chkType.Interval = checks.MinInterval
} }
var tlsClientConfig *tls.Config
if chkType.TCPUseTLS {
tlsClientConfig = a.tlsConfigurator.OutgoingTLSConfigForCheck(chkType.TLSSkipVerify, chkType.TLSServerName)
}
tcp := &checks.CheckTCP{ tcp := &checks.CheckTCP{
CheckID: cid, CheckID: cid,
ServiceID: sid, ServiceID: sid,
TCP: chkType.TCP, TCP: chkType.TCP,
Interval: chkType.Interval, Interval: chkType.Interval,
Timeout: chkType.Timeout, Timeout: chkType.Timeout,
Logger: a.logger, Logger: a.logger,
StatusHandler: statusHandler, TLSClientConfig: tlsClientConfig,
StatusHandler: statusHandler,
} }
tcp.Start() tcp.Start()
a.checkTCPs[cid] = tcp a.checkTCPs[cid] = tcp

90
agent/agent_test.go
View File

@ -14,11 +14,7 @@ import (
"encoding/json" "encoding/json"
"errors" "errors"
"fmt" "fmt"
"github.com/hashicorp/consul/agent/grpc-external/limiter" "io"
"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"
mathrand "math/rand" mathrand "math/rand"
"net" "net"
"net/http" "net/http"
@ -34,6 +30,12 @@ import (
"testing" "testing"
"time" "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"
"github.com/google/go-cmp/cmp/cmpopts" "github.com/google/go-cmp/cmp/cmpopts"
"github.com/google/tcpproxy" "github.com/google/tcpproxy"
@ -973,6 +975,80 @@ func TestAgent_AddServiceWithH2CPINGCheck(t *testing.T) {
requireCheckExists(t, a, "test-h2cping-check") 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) { func TestAgent_AddServiceNoExec(t *testing.T) {
if testing.Short() { if testing.Short() {
t.Skip("too slow for testing.Short") t.Skip("too slow for testing.Short")
@ -4308,7 +4384,7 @@ func TestAgent_consulConfig_RequestLimits(t *testing.T) {
t.Parallel() t.Parallel()
hcl := ` hcl := `
limits { limits {
request_limits { request_limits {
mode = "enforcing" mode = "enforcing"
read_rate = 8888 read_rate = 8888
@ -6278,7 +6354,7 @@ func TestAgent_scadaProvider(t *testing.T) {
}, },
Overrides: ` Overrides: `
cloud { 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_id = "test"
client_secret = "test" client_secret = "test"
}`, }`,

38
agent/checks/check.go
View File

@ -625,19 +625,20 @@ func (c *CheckH2PING) Start() {
go c.run() go c.run()
} }
// CheckTCP is used to periodically make an TCP/UDP connection to // CheckTCP is used to periodically make a TCP connection to determine the
// determine the health of a given check. // health of a given check.
// The check is passing if the connection succeeds // The check is passing if the connection succeeds
// The check is critical if the connection returns an error // The check is critical if the connection returns an error
// Supports failures_before_critical and success_before_passing. // Supports failures_before_critical and success_before_passing.
type CheckTCP struct { type CheckTCP struct {
CheckID structs.CheckID CheckID structs.CheckID
ServiceID structs.ServiceID ServiceID structs.ServiceID
TCP string TCP string
Interval time.Duration Interval time.Duration
Timeout time.Duration Timeout time.Duration
Logger hclog.Logger Logger hclog.Logger
StatusHandler *StatusHandler TLSClientConfig *tls.Config
StatusHandler *StatusHandler
dialer *net.Dialer dialer *net.Dialer
stop bool stop bool
@ -694,17 +695,30 @@ func (c *CheckTCP) run() {
// check is invoked periodically to perform the TCP check // check is invoked periodically to perform the TCP check
func (c *CheckTCP) 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 { if err != nil {
c.Logger.Warn("Check socket connection failed", c.Logger.Warn(fmt.Sprintf("Check %s connection failed", checkType),
"check", c.CheckID.String(), "check", c.CheckID.String(),
"error", err, "error", err,
) )
c.StatusHandler.updateCheck(c.CheckID, api.HealthCritical, err.Error()) c.StatusHandler.updateCheck(c.CheckID, api.HealthCritical, err.Error())
return return
} }
conn.Close() 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. // CheckUDP is used to periodically send a UDP datagram to determine the health of a given check.

1
agent/config/builder.go
View File

@ -1618,6 +1618,7 @@ func (b *builder) checkVal(v *CheckDefinition) *structs.CheckDefinition {
Body: stringVal(v.Body), Body: stringVal(v.Body),
DisableRedirects: boolVal(v.DisableRedirects), DisableRedirects: boolVal(v.DisableRedirects),
TCP: stringVal(v.TCP), TCP: stringVal(v.TCP),
TCPUseTLS: boolVal(v.TCPUseTLS),
UDP: stringVal(v.UDP), UDP: stringVal(v.UDP),
Interval: b.durationVal(fmt.Sprintf("check[%s].interval", id), v.Interval), Interval: b.durationVal(fmt.Sprintf("check[%s].interval", id), v.Interval),
DockerContainerID: stringVal(v.DockerContainerID), DockerContainerID: stringVal(v.DockerContainerID),

1
agent/config/config.go
View File

@ -423,6 +423,7 @@ type CheckDefinition struct {
DisableRedirects *bool `mapstructure:"disable_redirects"` DisableRedirects *bool `mapstructure:"disable_redirects"`
OutputMaxSize *int `mapstructure:"output_max_size"` OutputMaxSize *int `mapstructure:"output_max_size"`
TCP *string `mapstructure:"tcp"` TCP *string `mapstructure:"tcp"`
TCPUseTLS *bool `mapstructure:"tcp_use_tls"`
UDP *string `mapstructure:"udp"` UDP *string `mapstructure:"udp"`
Interval *string `mapstructure:"interval"` Interval *string `mapstructure:"interval"`
DockerContainerID *string `mapstructure:"docker_container_id" alias:"dockercontainerid"` DockerContainerID *string `mapstructure:"docker_container_id" alias:"dockercontainerid"`

61
agent/config/runtime_test.go
View File

@ -2357,12 +2357,12 @@ func TestLoad_IntegrationWithFlags(t *testing.T) {
}, },
json: []string{`{ json: []string{`{
"cloud": { "cloud": {
"resource_id": "file-id" "resource_id": "file-id"
} }
}`}, }`},
hcl: []string{` hcl: []string{`
cloud = { cloud = {
resource_id = "file-id" resource_id = "file-id"
} }
`}, `},
expected: func(rt *RuntimeConfig) { expected: func(rt *RuntimeConfig) {
@ -2529,6 +2529,60 @@ func TestLoad_IntegrationWithFlags(t *testing.T) {
rt.DataDir = dataDir 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{ run(t, testCase{
desc: "h2ping check without h2ping_use_tls set", desc: "h2ping check without h2ping_use_tls set",
args: []string{ args: []string{
@ -6287,6 +6341,7 @@ func TestLoad_FullConfig(t *testing.T) {
Body: "wSjTy7dg", Body: "wSjTy7dg",
DisableRedirects: true, DisableRedirects: true,
TCP: "RJQND605", TCP: "RJQND605",
TCPUseTLS: false,
H2PING: "9N1cSb5B", H2PING: "9N1cSb5B",
H2PingUseTLS: false, H2PingUseTLS: false,
OSService: "aAjE6m9Z", OSService: "aAjE6m9Z",
@ -6317,6 +6372,7 @@ func TestLoad_FullConfig(t *testing.T) {
DisableRedirects: false, DisableRedirects: false,
OutputMaxSize: checks.DefaultBufSize, OutputMaxSize: checks.DefaultBufSize,
TCP: "4jG5casb", TCP: "4jG5casb",
TCPUseTLS: false,
H2PING: "HCHU7gEb", H2PING: "HCHU7gEb",
H2PingUseTLS: false, H2PingUseTLS: false,
OSService: "aqq95BhP", OSService: "aqq95BhP",
@ -6346,6 +6402,7 @@ func TestLoad_FullConfig(t *testing.T) {
DisableRedirects: true, DisableRedirects: true,
OutputMaxSize: checks.DefaultBufSize, OutputMaxSize: checks.DefaultBufSize,
TCP: "JY6fTTcw", TCP: "JY6fTTcw",
TCPUseTLS: false,
H2PING: "rQ8eyCSF", H2PING: "rQ8eyCSF",
H2PingUseTLS: false, H2PingUseTLS: false,
OSService: "aZaCAXww", OSService: "aZaCAXww",

2
agent/config/testdata/TestRuntimeConfig_Sanitize.golden vendored
View File

@ -117,6 +117,7 @@
"Status": "", "Status": "",
"SuccessBeforePassing": 0, "SuccessBeforePassing": 0,
"TCP": "", "TCP": "",
"TCPUseTLS": false,
"TLSServerName": "", "TLSServerName": "",
"TLSSkipVerify": false, "TLSSkipVerify": false,
"TTL": "0s", "TTL": "0s",
@ -368,6 +369,7 @@
"Status": "", "Status": "",
"SuccessBeforePassing": 0, "SuccessBeforePassing": 0,
"TCP": "", "TCP": "",
"TCPUseTLS": false,
"TLSServerName": "", "TLSServerName": "",
"TLSSkipVerify": false, "TLSSkipVerify": false,
"TTL": "0s", "TTL": "0s",

6
agent/structs/check_definition.go
View File

@ -36,6 +36,7 @@ type CheckDefinition struct {
Body string Body string
DisableRedirects bool DisableRedirects bool
TCP string TCP string
TCPUseTLS bool
UDP string UDP string
Interval time.Duration Interval time.Duration
DockerContainerID string DockerContainerID string
@ -76,6 +77,7 @@ func (t *CheckDefinition) UnmarshalJSON(data []byte) (err error) {
DockerContainerIDSnake string `json:"docker_container_id"` DockerContainerIDSnake string `json:"docker_container_id"`
TLSServerNameSnake string `json:"tls_server_name"` TLSServerNameSnake string `json:"tls_server_name"`
TLSSkipVerifySnake bool `json:"tls_skip_verify"` TLSSkipVerifySnake bool `json:"tls_skip_verify"`
TCPUseTLSSnake bool `json:"tcp_use_tls"`
GRPCUseTLSSnake bool `json:"grpc_use_tls"` GRPCUseTLSSnake bool `json:"grpc_use_tls"`
ServiceIDSnake string `json:"service_id"` ServiceIDSnake string `json:"service_id"`
H2PingUseTLSSnake bool `json:"h2ping_use_tls"` H2PingUseTLSSnake bool `json:"h2ping_use_tls"`
@ -119,6 +121,9 @@ func (t *CheckDefinition) UnmarshalJSON(data []byte) (err error) {
if aux.TLSSkipVerifySnake { if aux.TLSSkipVerifySnake {
t.TLSSkipVerify = aux.TLSSkipVerifySnake t.TLSSkipVerify = aux.TLSSkipVerifySnake
} }
if aux.TCPUseTLSSnake {
t.TCPUseTLS = aux.TCPUseTLSSnake
}
if aux.GRPCUseTLSSnake { if aux.GRPCUseTLSSnake {
t.GRPCUseTLS = aux.GRPCUseTLSSnake t.GRPCUseTLS = aux.GRPCUseTLSSnake
} }
@ -220,6 +225,7 @@ func (c *CheckDefinition) CheckType() *CheckType {
DisableRedirects: c.DisableRedirects, DisableRedirects: c.DisableRedirects,
OutputMaxSize: c.OutputMaxSize, OutputMaxSize: c.OutputMaxSize,
TCP: c.TCP, TCP: c.TCP,
TCPUseTLS: c.TCPUseTLS,
UDP: c.UDP, UDP: c.UDP,
Interval: c.Interval, Interval: c.Interval,
DockerContainerID: c.DockerContainerID, DockerContainerID: c.DockerContainerID,

5
agent/structs/check_type.go
View File

@ -42,6 +42,7 @@ type CheckType struct {
Body string Body string
DisableRedirects bool DisableRedirects bool
TCP string TCP string
TCPUseTLS bool
UDP string UDP string
Interval time.Duration Interval time.Duration
AliasNode string AliasNode string
@ -87,6 +88,7 @@ func (t *CheckType) UnmarshalJSON(data []byte) (err error) {
DockerContainerIDSnake string `json:"docker_container_id"` DockerContainerIDSnake string `json:"docker_container_id"`
TLSServerNameSnake string `json:"tls_server_name"` TLSServerNameSnake string `json:"tls_server_name"`
TLSSkipVerifySnake bool `json:"tls_skip_verify"` TLSSkipVerifySnake bool `json:"tls_skip_verify"`
TCPUseTLSSnake bool `json:"tcp_use_tls"`
GRPCUseTLSSnake bool `json:"grpc_use_tls"` GRPCUseTLSSnake bool `json:"grpc_use_tls"`
H2PingUseTLSSnake bool `json:"h2ping_use_tls"` H2PingUseTLSSnake bool `json:"h2ping_use_tls"`
@ -131,6 +133,9 @@ func (t *CheckType) UnmarshalJSON(data []byte) (err error) {
if aux.TLSSkipVerifySnake { if aux.TLSSkipVerifySnake {
t.TLSSkipVerify = aux.TLSSkipVerifySnake t.TLSSkipVerify = aux.TLSSkipVerifySnake
} }
if aux.TCPUseTLSSnake {
t.TCPUseTLS = aux.TCPUseTLSSnake
}
if aux.GRPCUseTLSSnake { if aux.GRPCUseTLSSnake {
t.GRPCUseTLS = aux.GRPCUseTLSSnake t.GRPCUseTLS = aux.GRPCUseTLSSnake
} }

2
agent/structs/structs.go
View File

@ -1879,6 +1879,7 @@ type HealthCheckDefinition struct {
Body string `json:",omitempty"` Body string `json:",omitempty"`
DisableRedirects bool `json:",omitempty"` DisableRedirects bool `json:",omitempty"`
TCP string `json:",omitempty"` TCP string `json:",omitempty"`
TCPUseTLS bool `json:",omitempty"`
UDP string `json:",omitempty"` UDP string `json:",omitempty"`
H2PING string `json:",omitempty"` H2PING string `json:",omitempty"`
OSService string `json:",omitempty"` OSService string `json:",omitempty"`
@ -2031,6 +2032,7 @@ func (c *HealthCheck) CheckType() *CheckType {
Body: c.Definition.Body, Body: c.Definition.Body,
DisableRedirects: c.Definition.DisableRedirects, DisableRedirects: c.Definition.DisableRedirects,
TCP: c.Definition.TCP, TCP: c.Definition.TCP,
TCPUseTLS: c.Definition.TCPUseTLS,
UDP: c.Definition.UDP, UDP: c.Definition.UDP,
H2PING: c.Definition.H2PING, H2PING: c.Definition.H2PING,
OSService: c.Definition.OSService, OSService: c.Definition.OSService,

1
agent/txn_endpoint.go
View File

@ -313,6 +313,7 @@ func (s *HTTPHandlers) convertOps(resp http.ResponseWriter, req *http.Request) (
Method: check.Definition.Method, Method: check.Definition.Method,
Body: check.Definition.Body, Body: check.Definition.Body,
TCP: check.Definition.TCP, TCP: check.Definition.TCP,
TCPUseTLS: check.Definition.TCPUseTLS,
GRPC: check.Definition.GRPC, GRPC: check.Definition.GRPC,
GRPCUseTLS: check.Definition.GRPCUseTLS, GRPCUseTLS: check.Definition.GRPCUseTLS,
OSService: check.Definition.OSService, OSService: check.Definition.OSService,

1
api/agent.go
View File

@ -345,6 +345,7 @@ type AgentServiceCheck struct {
Method string `json:",omitempty"` Method string `json:",omitempty"`
Body string `json:",omitempty"` Body string `json:",omitempty"`
TCP string `json:",omitempty"` TCP string `json:",omitempty"`
TCPUseTLS bool `json:",omitempty"`
UDP string `json:",omitempty"` UDP string `json:",omitempty"`
Status string `json:",omitempty"` Status string `json:",omitempty"`
Notes string `json:",omitempty"` Notes string `json:",omitempty"`

1
api/health.go
View File

@ -67,6 +67,7 @@ type HealthCheckDefinition struct {
TLSServerName string TLSServerName string
TLSSkipVerify bool TLSSkipVerify bool
TCP string TCP string
TCPUseTLS bool
UDP string UDP string
GRPC string GRPC string
OSService string OSService string

4
proto/private/pbservice/healthcheck.gen.go
View File

@ -21,6 +21,7 @@ func CheckTypeToStructs(s *CheckType, t *structs.CheckType) {
t.Body = s.Body t.Body = s.Body
t.DisableRedirects = s.DisableRedirects t.DisableRedirects = s.DisableRedirects
t.TCP = s.TCP t.TCP = s.TCP
t.TCPUseTLS = s.TCPUseTLS
t.UDP = s.UDP t.UDP = s.UDP
t.Interval = structs.DurationFromProto(s.Interval) t.Interval = structs.DurationFromProto(s.Interval)
t.AliasNode = s.AliasNode t.AliasNode = s.AliasNode
@ -59,6 +60,7 @@ func CheckTypeFromStructs(t *structs.CheckType, s *CheckType) {
s.Body = t.Body s.Body = t.Body
s.DisableRedirects = t.DisableRedirects s.DisableRedirects = t.DisableRedirects
s.TCP = t.TCP s.TCP = t.TCP
s.TCPUseTLS = t.TCPUseTLS
s.UDP = t.UDP s.UDP = t.UDP
s.Interval = structs.DurationToProto(t.Interval) s.Interval = structs.DurationToProto(t.Interval)
s.AliasNode = t.AliasNode s.AliasNode = t.AliasNode
@ -142,6 +144,7 @@ func HealthCheckDefinitionToStructs(s *HealthCheckDefinition, t *structs.HealthC
t.Body = s.Body t.Body = s.Body
t.DisableRedirects = s.DisableRedirects t.DisableRedirects = s.DisableRedirects
t.TCP = s.TCP t.TCP = s.TCP
t.TCPUseTLS = s.TCPUseTLS
t.UDP = s.UDP t.UDP = s.UDP
t.H2PING = s.H2PING t.H2PING = s.H2PING
t.OSService = s.OSService t.OSService = s.OSService
@ -171,6 +174,7 @@ func HealthCheckDefinitionFromStructs(t *structs.HealthCheckDefinition, s *Healt
s.Body = t.Body s.Body = t.Body
s.DisableRedirects = t.DisableRedirects s.DisableRedirects = t.DisableRedirects
s.TCP = t.TCP s.TCP = t.TCP
s.TCPUseTLS = t.TCPUseTLS
s.UDP = t.UDP s.UDP = t.UDP
s.H2PING = t.H2PING s.H2PING = t.H2PING
s.OSService = t.OSService s.OSService = t.OSService

306
proto/private/pbservice/healthcheck.pb.go
View File

@ -279,6 +279,7 @@ type HealthCheckDefinition struct {
Body string `protobuf:"bytes,18,opt,name=Body,proto3" json:"Body,omitempty"` Body string `protobuf:"bytes,18,opt,name=Body,proto3" json:"Body,omitempty"`
DisableRedirects bool `protobuf:"varint,22,opt,name=DisableRedirects,proto3" json:"DisableRedirects,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"` 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"` UDP string `protobuf:"bytes,23,opt,name=UDP,proto3" json:"UDP,omitempty"`
OSService string `protobuf:"bytes,24,opt,name=OSService,proto3" json:"OSService,omitempty"` OSService string `protobuf:"bytes,24,opt,name=OSService,proto3" json:"OSService,omitempty"`
// mog: func-to=structs.DurationFromProto func-from=structs.DurationToProto // mog: func-to=structs.DurationFromProto func-from=structs.DurationToProto
@ -390,6 +391,13 @@ func (x *HealthCheckDefinition) GetTCP() string {
return "" return ""
} }
func (x *HealthCheckDefinition) GetTCPUseTLS() bool {
if x != nil {
return x.TCPUseTLS
}
return false
}
func (x *HealthCheckDefinition) GetUDP() string { func (x *HealthCheckDefinition) GetUDP() string {
if x != nil { if x != nil {
return x.UDP return x.UDP
@ -532,6 +540,7 @@ type CheckType struct {
Body string `protobuf:"bytes,26,opt,name=Body,proto3" json:"Body,omitempty"` Body string `protobuf:"bytes,26,opt,name=Body,proto3" json:"Body,omitempty"`
DisableRedirects bool `protobuf:"varint,31,opt,name=DisableRedirects,proto3" json:"DisableRedirects,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"` 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"` UDP string `protobuf:"bytes,32,opt,name=UDP,proto3" json:"UDP,omitempty"`
OSService string `protobuf:"bytes,33,opt,name=OSService,proto3" json:"OSService,omitempty"` OSService string `protobuf:"bytes,33,opt,name=OSService,proto3" json:"OSService,omitempty"`
// mog: func-to=structs.DurationFromProto func-from=structs.DurationToProto // mog: func-to=structs.DurationFromProto func-from=structs.DurationToProto
@ -677,6 +686,13 @@ func (x *CheckType) GetTCP() string {
return "" return ""
} }
func (x *CheckType) GetTCPUseTLS() bool {
if x != nil {
return x.TCPUseTLS
}
return false
}
func (x *CheckType) GetUDP() string { func (x *CheckType) GetUDP() string {
if x != nil { if x != nil {
return x.UDP return x.UDP
@ -884,7 +900,7 @@ var file_private_pbservice_healthcheck_proto_rawDesc = []byte{
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@ -905,153 +921,157 @@ var file_private_pbservice_healthcheck_proto_rawDesc = []byte{
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} }
var ( var (

2
proto/private/pbservice/healthcheck.proto
View File

@ -66,6 +66,7 @@ message HealthCheckDefinition {
string Body = 18; string Body = 18;
bool DisableRedirects = 22; bool DisableRedirects = 22;
string TCP = 5; string TCP = 5;
bool TCPUseTLS = 25;
string UDP = 23; string UDP = 23;
string OSService = 24; string OSService = 24;
// mog: func-to=structs.DurationFromProto func-from=structs.DurationToProto // mog: func-to=structs.DurationFromProto func-from=structs.DurationToProto
@ -117,6 +118,7 @@ message CheckType {
string Body = 26; string Body = 26;
bool DisableRedirects = 31; bool DisableRedirects = 31;
string TCP = 8; string TCP = 8;
bool TCPUseTLS = 34;
string UDP = 32; string UDP = 32;
string OSService = 33; string OSService = 33;
// mog: func-to=structs.DurationFromProto func-from=structs.DurationToProto // mog: func-to=structs.DurationFromProto func-from=structs.DurationToProto

4
website/content/api-docs/agent/check.mdx
View File

@ -239,6 +239,10 @@ The table below shows this endpoint's support for
made to both addresses, and the first successful connection attempt will made to both addresses, and the first successful connection attempt will
result in a successful check. 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. - `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. 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. If the datagram is sent successfully or a timeout is returned, the check is set to the `passing` state.

1
website/content/docs/dynamic-app-config/watches.mdx
View File

@ -535,6 +535,7 @@ An example of the output of this command:
"TLSServerName": "", "TLSServerName": "",
"TLSSkipVerify": false, "TLSSkipVerify": false,
"TCP": "", "TCP": "",
"TCPUseTLS": false,
"GRPC": "", "GRPC": "",
"GRPCUseTLS": false "GRPCUseTLS": false
}, },

3
website/content/docs/ecs/configuration-reference.mdx
View File

@ -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`. | | `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. | | `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`. | | `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`. | | `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. | | `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`. | | `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`. | | `udp` | `string` | optional | Specifies this is a UDP check. Must be an IP/hostname plus port to which UDP datagrams are sent every `interval`. |

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website/content/docs/services/configuration/checks-configuration-reference.mdx
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@ -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`. | <li>H2ping</li> | | `h2ping_use_tls` | Boolean value that enables TLS for H2ping checks when set to `true`. | <li>H2ping</li> |
| `http` | String value that specifies an HTTP endpoint to send requests to. | <li>HTTP</li> | | `http` | String value that specifies an HTTP endpoint to send requests to. | <li>HTTP</li> |
| `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: <li>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.</li><li>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.</li> | <li>HTTP </li> <li>H2Ping </li> <li>gRPC </li> | | `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: <li>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.</li><li>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.</li> | <li>HTTP </li> <li>H2Ping </li> <li>gRPC </li> |
| `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`. | <li>HTTP </li> <li>H2Ping </li> <li>gRPC </li> | | `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`. | <li>HTTP </li> <li>H2Ping </li> <li>gRPC </li> <li>TCP </li> |
| `method` | String value that specifies the request method to send during HTTP checks. Default is `GET`. | <li>HTTP</li> | | `method` | String value that specifies the request method to send during HTTP checks. Default is `GET`. | <li>HTTP</li> |
| `header` | Object that specifies header fields to send in HTTP check requests. Each header specified in `header` object contains a list of string values. | <li>HTTP</li> | | `header` | Object that specifies header fields to send in HTTP check requests. Each header specified in `header` object contains a list of string values. | <li>HTTP</li> |
| `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. | <li>HTTP</li> | | `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. | <li>HTTP</li> |
@ -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. | <li>OSService</li> | | `os_service` | String value that specifies the name of the name of a service to check during an OSService check. | <li>OSService</li> |
| `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. | <li>OSService</li> | | `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. | <li>OSService</li> |
| `tcp` | String value that specifies an IP address or host and port number for the check establish a TCP connection with. | <li>TCP</li> | | `tcp` | String value that specifies an IP address or host and port number for the check establish a TCP connection with. | <li>TCP</li> |
| `tcp_use_tls` | Boolean value that enables TLS for TCP checks when set to `true`. | <li>TCP </li> |
| `udp` | String value that specifies an IP address or host and port number for the check to send UDP datagrams to. | <li>UDP</li> | | `udp` | String value that specifies an IP address or host and port number for the check to send UDP datagrams to. | <li>UDP</li> |
| `ttl` | String value that specifies how long to wait for an update from an external process during a TTL check. | <li>TTL</li> | | `ttl` | String value that specifies how long to wait for an update from an external process during a TTL check. | <li>TTL</li> |
| `alias_service` | String value that specifies a service or node that the service associated with the health check aliases. | <li>Alias</li> | | `alias_service` | String value that specifies a service or node that the service associated with the health check aliases. | <li>Alias</li> |
@ -52,4 +53,3 @@ Specify health check options in the `check` block. To register two or more heath
## Checks block ## 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). 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).