Add failures_before_warning to checks (#10969)

Signed-off-by: Jakub Sokołowski <jakub@status.im>

* agent: add failures_before_warning setting

The new setting allows users to specify the number of check failures
that have to happen before a service status us updated to be `warning`.
This allows for more visibility for detected issues without creating
alerts and pinging administrators. Unlike the previous behavior, which
caused the service status to not update until it reached the configured
`failures_before_critical` setting, now Consul updates the Web UI view
with the `warning` state and the output of the service check when
`failures_before_warning` is breached.

The default value of `FailuresBeforeWarning` is the same as the value of
`FailuresBeforeCritical`, which allows for retaining the previous default
behavior of not triggering a warning.

When `FailuresBeforeWarning` is set to a value higher than that of
`FailuresBeforeCritical it has no effect as `FailuresBeforeCritical`
takes precedence.

Resolves: https://github.com/hashicorp/consul/issues/10680

Signed-off-by: Jakub Sokołowski <jakub@status.im>

Co-authored-by: Jakub Sokołowski <jakub@status.im>
This commit is contained in:
Daniel Nephin 2021-09-14 12:47:52 -04:00 committed by GitHub
parent 0a0319b209
commit 44d91ea56f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
22 changed files with 364 additions and 195 deletions

4
.changelog/10969.txt Normal file
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@ -0,0 +1,4 @@
```release-note:improvement
checks: add failures_before_warning setting for interval checks.
```

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@ -2459,6 +2459,11 @@ func (a *Agent) addCheck(check *structs.HealthCheck, chkType *structs.CheckType,
maxOutputSize = chkType.OutputMaxSize
}
// FailuresBeforeWarning has to default to same value as FailuresBeforeCritical
if chkType.FailuresBeforeWarning == 0 {
chkType.FailuresBeforeWarning = chkType.FailuresBeforeCritical
}
// Get the address of the proxy for this service if it exists
// Need its config to know whether we should reroute checks to it
var proxy *structs.NodeService
@ -2473,7 +2478,7 @@ func (a *Agent) addCheck(check *structs.HealthCheck, chkType *structs.CheckType,
}
}
statusHandler := checks.NewStatusHandler(a.State, a.logger, chkType.SuccessBeforePassing, chkType.FailuresBeforeCritical)
statusHandler := checks.NewStatusHandler(a.State, a.logger, chkType.SuccessBeforePassing, chkType.FailuresBeforeWarning, chkType.FailuresBeforeCritical)
sid := check.CompoundServiceID()
cid := check.CompoundCheckID()

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@ -4,7 +4,6 @@ import (
"context"
"crypto/tls"
"fmt"
http2 "golang.org/x/net/http2"
"io"
"io/ioutil"
"net"
@ -16,6 +15,8 @@ import (
"syscall"
"time"
http2 "golang.org/x/net/http2"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/go-hclog"
@ -907,17 +908,19 @@ type StatusHandler struct {
logger hclog.Logger
successBeforePassing int
successCounter int
failuresBeforeWarning int
failuresBeforeCritical int
failuresCounter int
}
// NewStatusHandler set counters values to threshold in order to immediatly update status after first check.
func NewStatusHandler(inner CheckNotifier, logger hclog.Logger, successBeforePassing, failuresBeforeCritical int) *StatusHandler {
func NewStatusHandler(inner CheckNotifier, logger hclog.Logger, successBeforePassing, failuresBeforeWarning, failuresBeforeCritical int) *StatusHandler {
return &StatusHandler{
logger: logger,
inner: inner,
successBeforePassing: successBeforePassing,
successCounter: successBeforePassing,
failuresBeforeWarning: failuresBeforeWarning,
failuresBeforeCritical: failuresBeforeCritical,
failuresCounter: failuresBeforeCritical,
}
@ -950,10 +953,17 @@ func (s *StatusHandler) updateCheck(checkID structs.CheckID, status, output stri
s.inner.UpdateCheck(checkID, status, output)
return
}
s.logger.Warn("Check failed but has not reached failure threshold",
// Defaults to same value as failuresBeforeCritical if not set.
if s.failuresCounter >= s.failuresBeforeWarning {
s.logger.Warn("Check is now warning", "check", checkID.String())
s.inner.UpdateCheck(checkID, api.HealthWarning, output)
return
}
s.logger.Warn("Check failed but has not reached warning/failure threshold",
"check", checkID.String(),
"status", status,
"failure_count", s.failuresCounter,
"warning_threshold", s.failuresBeforeWarning,
"failure_threshold", s.failuresBeforeCritical,
)
}

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@ -49,7 +49,7 @@ func TestCheckMonitor_Script(t *testing.T) {
t.Run(tt.status, func(t *testing.T) {
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
check := &CheckMonitor{
@ -94,7 +94,7 @@ func TestCheckMonitor_Args(t *testing.T) {
t.Run(tt.status, func(t *testing.T) {
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
check := &CheckMonitor{
@ -128,7 +128,7 @@ func TestCheckMonitor_Timeout(t *testing.T) {
// t.Parallel() // timing test. no parallel
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
check := &CheckMonitor{
@ -163,7 +163,7 @@ func TestCheckMonitor_RandomStagger(t *testing.T) {
// t.Parallel() // timing test. no parallel
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
@ -195,7 +195,7 @@ func TestCheckMonitor_LimitOutput(t *testing.T) {
t.Parallel()
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
check := &CheckMonitor{
@ -354,7 +354,7 @@ func TestCheckHTTP(t *testing.T) {
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
@ -397,7 +397,7 @@ func TestCheckHTTP_Proxied(t *testing.T) {
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
check := &CheckHTTP{
@ -433,7 +433,7 @@ func TestCheckHTTP_NotProxied(t *testing.T) {
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
check := &CheckHTTP{
@ -558,7 +558,7 @@ func TestCheckMaxOutputSize(t *testing.T) {
Interval: 2 * time.Millisecond,
Logger: logger,
OutputMaxSize: maxOutputSize,
StatusHandler: NewStatusHandler(notif, logger, 0, 0),
StatusHandler: NewStatusHandler(notif, logger, 0, 0, 0),
}
check.Start()
@ -586,7 +586,7 @@ func TestCheckHTTPTimeout(t *testing.T) {
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("bar", nil)
@ -659,7 +659,7 @@ func TestCheckHTTPBody(t *testing.T) {
Timeout: timeout,
Interval: 2 * time.Millisecond,
Logger: logger,
StatusHandler: NewStatusHandler(notif, logger, 0, 0),
StatusHandler: NewStatusHandler(notif, logger, 0, 0, 0),
}
check.Start()
defer check.Stop()
@ -690,7 +690,7 @@ func TestCheckHTTP_disablesKeepAlives(t *testing.T) {
HTTP: "http://foo.bar/baz",
Interval: 10 * time.Second,
Logger: logger,
StatusHandler: NewStatusHandler(notif, logger, 0, 0),
StatusHandler: NewStatusHandler(notif, logger, 0, 0, 0),
}
check.Start()
@ -725,7 +725,7 @@ func TestCheckHTTP_TLS_SkipVerify(t *testing.T) {
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("skipverify_true", nil)
check := &CheckHTTP{
@ -767,7 +767,7 @@ func TestCheckHTTP_TLS_BadVerify(t *testing.T) {
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("skipverify_false", nil)
check := &CheckHTTP{
@ -819,7 +819,7 @@ func mockTCPServer(network string) net.Listener {
func expectTCPStatus(t *testing.T, tcp string, status string) {
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
check := &CheckTCP{
@ -846,13 +846,12 @@ func TestStatusHandlerUpdateStatusAfterConsecutiveChecksThresholdIsReached(t *te
cid := structs.NewCheckID("foo", nil)
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 2, 3)
statusHandler := NewStatusHandler(notif, logger, 2, 2, 3)
// Set the initial status to passing after a single success
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
// Status should become critical after 3 failed checks only
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
// Status should still be passing after 1 failed check only
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
retry.Run(t, func(r *retry.R) {
@ -860,10 +859,19 @@ func TestStatusHandlerUpdateStatusAfterConsecutiveChecksThresholdIsReached(t *te
require.Equal(r, api.HealthPassing, notif.State(cid))
})
// Status should become warning after 2 failed checks only
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 2, notif.Updates(cid))
require.Equal(r, api.HealthWarning, notif.State(cid))
})
// Status should become critical after 4 failed checks only
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 3, notif.Updates(cid))
require.Equal(r, api.HealthCritical, notif.State(cid))
})
@ -871,14 +879,14 @@ func TestStatusHandlerUpdateStatusAfterConsecutiveChecksThresholdIsReached(t *te
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 2, notif.Updates(cid))
require.Equal(r, 3, notif.Updates(cid))
require.Equal(r, api.HealthCritical, notif.State(cid))
})
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 3, notif.Updates(cid))
require.Equal(r, 4, notif.Updates(cid))
require.Equal(r, api.HealthPassing, notif.State(cid))
})
}
@ -888,17 +896,18 @@ func TestStatusHandlerResetCountersOnNonIdenticalsConsecutiveChecks(t *testing.T
cid := structs.NewCheckID("foo", nil)
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 2, 3)
statusHandler := NewStatusHandler(notif, logger, 2, 2, 3)
// Set the initial status to passing after a single success
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
// Status should remain passing after FAIL PASS FAIL FAIL sequence
// Status should remain passing after FAIL PASS FAIL PASS FAIL sequence
// Although we have 3 FAILS, they are not consecutive
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
retry.Run(t, func(r *retry.R) {
@ -906,11 +915,19 @@ func TestStatusHandlerResetCountersOnNonIdenticalsConsecutiveChecks(t *testing.T
require.Equal(r, api.HealthPassing, notif.State(cid))
})
// Critical after a 3rd consecutive FAIL
// Warning after a 2rd consecutive FAIL
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 2, notif.Updates(cid))
require.Equal(r, api.HealthWarning, notif.State(cid))
})
// Critical after a 3rd consecutive FAIL
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 3, notif.Updates(cid))
require.Equal(r, api.HealthCritical, notif.State(cid))
})
@ -920,19 +937,137 @@ func TestStatusHandlerResetCountersOnNonIdenticalsConsecutiveChecks(t *testing.T
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 2, notif.Updates(cid))
require.Equal(r, 3, notif.Updates(cid))
require.Equal(r, api.HealthCritical, notif.State(cid))
})
// Passing after a 2nd consecutive PASS
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 4, notif.Updates(cid))
require.Equal(r, api.HealthPassing, notif.State(cid))
})
}
func TestStatusHandlerWarningAndCriticalThresholdsTheSameSetsCritical(t *testing.T) {
t.Parallel()
cid := structs.NewCheckID("foo", nil)
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 2, 3, 3)
// Set the initial status to passing after a single success
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
// Status should remain passing after FAIL FAIL sequence
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 1, notif.Updates(cid))
require.Equal(r, api.HealthPassing, notif.State(cid))
})
// Critical and not Warning after a 3rd consecutive FAIL
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 2, notif.Updates(cid))
require.Equal(r, api.HealthCritical, notif.State(cid))
})
// Passing after consecutive PASS PASS sequence
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 3, notif.Updates(cid))
require.Equal(r, api.HealthPassing, notif.State(cid))
})
}
func TestStatusHandlerMaintainWarningStatusWhenCheckIsFlapping(t *testing.T) {
t.Parallel()
cid := structs.NewCheckID("foo", nil)
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 3, 3, 5)
// Set the initial status to passing after a single success.
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
// Status should remain passing after a FAIL FAIL sequence.
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 1, notif.Updates(cid))
require.Equal(r, api.HealthPassing, notif.State(cid))
})
// Warning after a 3rd consecutive FAIL.
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
retry.Run(t, func(r *retry.R) {
require.Equal(r, 2, notif.Updates(cid))
require.Equal(r, api.HealthWarning, notif.State(cid))
})
// Status should remain passing after PASS FAIL FAIL FAIL PASS FAIL FAIL FAIL PASS sequence.
// Although we have 6 FAILS, they are not consecutive.
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
// The status gets updated due to failuresCounter being reset
// but the status itself remains as Warning.
retry.Run(t, func(r *retry.R) {
require.Equal(r, 3, notif.Updates(cid))
require.Equal(r, api.HealthWarning, notif.State(cid))
})
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
// Status doesn'tn change, but the state update is triggered.
retry.Run(t, func(r *retry.R) {
require.Equal(r, 4, notif.Updates(cid))
require.Equal(r, api.HealthWarning, notif.State(cid))
})
// Status should change only after 5 consecutive FAIL updates.
statusHandler.updateCheck(cid, api.HealthPassing, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
// The status doesn't change, but a status update is triggered.
retry.Run(t, func(r *retry.R) {
require.Equal(r, 5, notif.Updates(cid))
require.Equal(r, api.HealthWarning, notif.State(cid))
})
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
// The status doesn't change, but a status update is triggered.
retry.Run(t, func(r *retry.R) {
require.Equal(r, 6, notif.Updates(cid))
require.Equal(r, api.HealthWarning, notif.State(cid))
})
statusHandler.updateCheck(cid, api.HealthCritical, "bar")
// The FailuresBeforeCritical threshold is finally breached.
retry.Run(t, func(r *retry.R) {
require.Equal(r, 7, notif.Updates(cid))
require.Equal(r, api.HealthCritical, notif.State(cid))
})
}
func TestCheckTCPCritical(t *testing.T) {
t.Parallel()
var (
@ -992,7 +1127,7 @@ func TestCheckH2PING(t *testing.T) {
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
tlsCfg := &api.TLSConfig{
InsecureSkipVerify: true,
@ -1044,7 +1179,7 @@ func TestCheckH2PING_TLS_BadVerify(t *testing.T) {
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
tlsCfg := &api.TLSConfig{}
tlsClientCfg, err := api.SetupTLSConfig(tlsCfg)
@ -1085,7 +1220,7 @@ func TestCheckH2PINGInvalidListener(t *testing.T) {
notif := mock.NewNotify()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
tlsCfg := &api.TLSConfig{
InsecureSkipVerify: true,
@ -1388,7 +1523,7 @@ func TestCheck_Docker(t *testing.T) {
notif, upd := mock.NewNotifyChan()
logger := testutil.Logger(t)
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
id := structs.NewCheckID("chk", nil)
check := &CheckDocker{

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@ -113,7 +113,7 @@ func TestGRPC_Proxied(t *testing.T) {
Output: ioutil.Discard,
})
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
check := &CheckGRPC{
@ -147,7 +147,7 @@ func TestGRPC_NotProxied(t *testing.T) {
Output: ioutil.Discard,
})
statusHandler := NewStatusHandler(notif, logger, 0, 0)
statusHandler := NewStatusHandler(notif, logger, 0, 0, 0)
cid := structs.NewCheckID("foo", nil)
check := &CheckGRPC{

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@ -1415,6 +1415,12 @@ func (b *builder) validate(rt RuntimeConfig) error {
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{
@ -1584,6 +1590,7 @@ func (b *builder) checkVal(v *CheckDefinition) *structs.CheckDefinition {
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),
DeregisterCriticalServiceAfter: b.durationVal(fmt.Sprintf("check[%s].deregister_critical_service_after", id), v.DeregisterCriticalServiceAfter),
OutputMaxSize: intValWithDefault(v.OutputMaxSize, checks.DefaultBufSize),

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@ -424,6 +424,7 @@ type CheckDefinition struct {
TTL *string `mapstructure:"ttl"`
H2PING *string `mapstructure:"h2ping"`
SuccessBeforePassing *int `mapstructure:"success_before_passing"`
FailuresBeforeWarning *int `mapstructure:"failures_before_warning"`
FailuresBeforeCritical *int `mapstructure:"failures_before_critical"`
DeregisterCriticalServiceAfter *string `mapstructure:"deregister_critical_service_after" alias:"deregistercriticalserviceafter"`

View File

@ -434,6 +434,9 @@ type RuntimeConfig struct {
// tls_skip_verify = (true|false)
// timeout = "duration"
// ttl = "duration"
// success_before_passing = int
// failures_before_warning = int
// failures_before_critical = int
// deregister_critical_service_after = "duration"
// },
// ...

View File

@ -2330,17 +2330,17 @@ func TestLoad_IntegrationWithFlags(t *testing.T) {
`-data-dir=` + dataDir,
},
json: []string{
`{ "check": { "name": "a", "args": ["/bin/true"] } }`,
`{ "check": { "name": "b", "args": ["/bin/false"] } }`,
`{ "check": { "name": "a", "args": ["/bin/true"], "interval": "1s" } }`,
`{ "check": { "name": "b", "args": ["/bin/false"], "interval": "1s" } }`,
},
hcl: []string{
`check = { name = "a" args = ["/bin/true"] }`,
`check = { name = "b" args = ["/bin/false"] }`,
`check = { name = "a" args = ["/bin/true"] interval = "1s"}`,
`check = { name = "b" args = ["/bin/false"] interval = "1s" }`,
},
expected: func(rt *RuntimeConfig) {
rt.Checks = []*structs.CheckDefinition{
{Name: "a", ScriptArgs: []string{"/bin/true"}, OutputMaxSize: checks.DefaultBufSize},
{Name: "b", ScriptArgs: []string{"/bin/false"}, OutputMaxSize: checks.DefaultBufSize},
{Name: "a", ScriptArgs: []string{"/bin/true"}, OutputMaxSize: checks.DefaultBufSize, Interval: time.Second},
{Name: "b", ScriptArgs: []string{"/bin/false"}, OutputMaxSize: checks.DefaultBufSize, Interval: time.Second},
}
rt.DataDir = dataDir
},
@ -2351,14 +2351,14 @@ func TestLoad_IntegrationWithFlags(t *testing.T) {
`-data-dir=` + dataDir,
},
json: []string{
`{ "check": { "name": "a", "grpc": "localhost:12345/foo", "grpc_use_tls": true } }`,
`{ "check": { "name": "a", "grpc": "localhost:12345/foo", "grpc_use_tls": true, "interval": "1s" } }`,
},
hcl: []string{
`check = { name = "a" grpc = "localhost:12345/foo", grpc_use_tls = true }`,
`check = { name = "a" grpc = "localhost:12345/foo", grpc_use_tls = true interval = "1s" }`,
},
expected: func(rt *RuntimeConfig) {
rt.Checks = []*structs.CheckDefinition{
{Name: "a", GRPC: "localhost:12345/foo", GRPCUseTLS: true, OutputMaxSize: checks.DefaultBufSize},
{Name: "a", GRPC: "localhost:12345/foo", GRPCUseTLS: true, OutputMaxSize: checks.DefaultBufSize, Interval: time.Second},
}
rt.DataDir = dataDir
},
@ -2478,7 +2478,8 @@ func TestLoad_IntegrationWithFlags(t *testing.T) {
"name": "y",
"DockerContainerID": "z",
"DeregisterCriticalServiceAfter": "10s",
"ScriptArgs": ["a", "b"]
"ScriptArgs": ["a", "b"],
"Interval": "2s"
}
}
}`,
@ -2500,6 +2501,7 @@ func TestLoad_IntegrationWithFlags(t *testing.T) {
DockerContainerID = "z"
DeregisterCriticalServiceAfter = "10s"
ScriptArgs = ["a", "b"]
Interval = "2s"
}
}`,
},
@ -2517,12 +2519,13 @@ func TestLoad_IntegrationWithFlags(t *testing.T) {
EnableTagOverride: true,
Checks: []*structs.CheckType{
{
CheckID: types.CheckID("x"),
CheckID: "x",
Name: "y",
DockerContainerID: "z",
DeregisterCriticalServiceAfter: 10 * time.Second,
ScriptArgs: []string{"a", "b"},
OutputMaxSize: checks.DefaultBufSize,
Interval: 2 * time.Second,
},
},
Weights: &structs.Weights{
@ -5299,7 +5302,6 @@ func TestLoad_FullConfig(t *testing.T) {
TLSServerName: "bdeb5f6a",
TLSSkipVerify: true,
Timeout: 1813 * time.Second,
TTL: 21743 * time.Second,
DeregisterCriticalServiceAfter: 14232 * time.Second,
},
{
@ -5326,7 +5328,6 @@ func TestLoad_FullConfig(t *testing.T) {
TLSServerName: "6adc3bfb",
TLSSkipVerify: true,
Timeout: 18506 * time.Second,
TTL: 31006 * time.Second,
DeregisterCriticalServiceAfter: 2366 * time.Second,
},
{
@ -5353,7 +5354,6 @@ func TestLoad_FullConfig(t *testing.T) {
TLSServerName: "7BdnzBYk",
TLSSkipVerify: true,
Timeout: 5954 * time.Second,
TTL: 30044 * time.Second,
DeregisterCriticalServiceAfter: 13209 * time.Second,
},
},
@ -5559,7 +5559,6 @@ func TestLoad_FullConfig(t *testing.T) {
TLSServerName: "4f191d4F",
TLSSkipVerify: true,
Timeout: 38333 * time.Second,
TTL: 57201 * time.Second,
DeregisterCriticalServiceAfter: 44214 * time.Second,
},
},
@ -5611,30 +5610,14 @@ func TestLoad_FullConfig(t *testing.T) {
TLSServerName: "f43ouY7a",
TLSSkipVerify: true,
Timeout: 34738 * time.Second,
TTL: 22773 * time.Second,
DeregisterCriticalServiceAfter: 84282 * time.Second,
},
&structs.CheckType{
CheckID: "UHsDeLxG",
Name: "PQSaPWlT",
Notes: "jKChDOdl",
Status: "5qFz6OZn",
ScriptArgs: []string{"NMtYWlT9", "vj74JXsm"},
HTTP: "1LBDJhw4",
Header: map[string][]string{
"cXPmnv1M": {"imDqfaBx", "NFxZ1bQe"},
"vr7wY7CS": {"EtCoNPPL", "9vAarJ5s"},
},
Method: "wzByP903",
Body: "4I8ucZgZ",
CheckID: "UHsDeLxG",
Name: "PQSaPWlT",
Notes: "jKChDOdl",
Status: "5qFz6OZn",
OutputMaxSize: checks.DefaultBufSize,
TCP: "2exjZIGE",
H2PING: "jTDuR1DC",
Interval: 5656 * time.Second,
DockerContainerID: "5tDBWpfA",
Shell: "rlTpLM8s",
TLSServerName: "sOv5WTtp",
TLSSkipVerify: true,
Timeout: 4868 * time.Second,
TTL: 11222 * time.Second,
DeregisterCriticalServiceAfter: 68482 * time.Second,
@ -5770,7 +5753,6 @@ func TestLoad_FullConfig(t *testing.T) {
TLSServerName: "axw5QPL5",
TLSSkipVerify: true,
Timeout: 18913 * time.Second,
TTL: 44743 * time.Second,
DeregisterCriticalServiceAfter: 8482 * time.Second,
},
&structs.CheckType{
@ -5795,7 +5777,6 @@ func TestLoad_FullConfig(t *testing.T) {
TLSServerName: "7uwWOnUS",
TLSSkipVerify: true,
Timeout: 38282 * time.Second,
TTL: 1181 * time.Second,
DeregisterCriticalServiceAfter: 4992 * time.Second,
},
&structs.CheckType{
@ -5820,7 +5801,6 @@ func TestLoad_FullConfig(t *testing.T) {
TLSServerName: "ECSHk8WF",
TLSSkipVerify: true,
Timeout: 38483 * time.Second,
TTL: 10943 * time.Second,
DeregisterCriticalServiceAfter: 68787 * time.Second,
},
},

View File

@ -94,6 +94,7 @@
"DeregisterCriticalServiceAfter": "0s",
"DockerContainerID": "",
"EnterpriseMeta": {},
"FailuresBeforeWarning": 0,
"FailuresBeforeCritical": 0,
"GRPC": "",
"GRPCUseTLS": false,
@ -295,6 +296,7 @@
"CheckID": "",
"DeregisterCriticalServiceAfter": "0s",
"DockerContainerID": "",
"FailuresBeforeWarning": 0,
"FailuresBeforeCritical": 0,
"GRPC": "",
"GRPCUseTLS": false,
@ -416,4 +418,4 @@
"Watches": [],
"XDSAddrs": [],
"XDSPort": 0
}
}

View File

@ -117,7 +117,6 @@ check = {
tls_server_name = "7BdnzBYk"
tls_skip_verify = true
timeout = "5954s"
ttl = "30044s"
deregister_critical_service_after = "13209s"
},
checks = [
@ -145,7 +144,6 @@ checks = [
tls_server_name = "bdeb5f6a"
tls_skip_verify = true
timeout = "1813s"
ttl = "21743s"
deregister_critical_service_after = "14232s"
},
{
@ -172,7 +170,6 @@ checks = [
tls_server_name = "6adc3bfb"
tls_skip_verify = true
timeout = "18506s"
ttl = "31006s"
deregister_critical_service_after = "2366s"
}
]
@ -389,7 +386,6 @@ service = {
tls_server_name = "ECSHk8WF"
tls_skip_verify = true
timeout = "38483s"
ttl = "10943s"
deregister_critical_service_after = "68787s"
}
checks = [
@ -415,7 +411,6 @@ service = {
tls_server_name = "axw5QPL5"
tls_skip_verify = true
timeout = "18913s"
ttl = "44743s"
deregister_critical_service_after = "8482s"
},
{
@ -440,7 +435,6 @@ service = {
tls_server_name = "7uwWOnUS"
tls_skip_verify = true
timeout = "38282s"
ttl = "1181s"
deregister_critical_service_after = "4992s"
}
]
@ -479,7 +473,6 @@ services = [
tls_server_name = "4f191d4F"
tls_skip_verify = true
timeout = "38333s"
ttl = "57201s"
deregister_critical_service_after = "44214s"
}
connect {
@ -521,7 +514,6 @@ services = [
tls_server_name = "f43ouY7a"
tls_skip_verify = true
timeout = "34738s"
ttl = "22773s"
deregister_critical_service_after = "84282s"
},
{
@ -529,22 +521,7 @@ services = [
name = "PQSaPWlT"
notes = "jKChDOdl"
status = "5qFz6OZn"
args = ["NMtYWlT9", "vj74JXsm"]
http = "1LBDJhw4"
header = {
"cXPmnv1M" = [ "imDqfaBx", "NFxZ1bQe" ],
"vr7wY7CS" = [ "EtCoNPPL", "9vAarJ5s" ]
}
method = "wzByP903"
body = "4I8ucZgZ"
tcp = "2exjZIGE"
h2ping = "jTDuR1DC"
interval = "5656s"
output_max_size = 4096
docker_container_id = "5tDBWpfA"
shell = "rlTpLM8s"
tls_server_name = "sOv5WTtp"
tls_skip_verify = true
timeout = "4868s"
ttl = "11222s"
deregister_critical_service_after = "68482s"

View File

@ -118,7 +118,6 @@
"tls_server_name": "7BdnzBYk",
"tls_skip_verify": true,
"timeout": "5954s",
"ttl": "30044s",
"deregister_critical_service_after": "13209s"
},
"checks": [
@ -146,7 +145,6 @@
"tls_server_name": "bdeb5f6a",
"tls_skip_verify": true,
"timeout": "1813s",
"ttl": "21743s",
"deregister_critical_service_after": "14232s"
},
{
@ -173,7 +171,6 @@
"tls_server_name": "6adc3bfb",
"tls_skip_verify": true,
"timeout": "18506s",
"ttl": "31006s",
"deregister_critical_service_after": "2366s"
}
],
@ -386,7 +383,6 @@
"tls_server_name": "ECSHk8WF",
"tls_skip_verify": true,
"timeout": "38483s",
"ttl": "10943s",
"deregister_critical_service_after": "68787s"
},
"checks": [
@ -412,7 +408,6 @@
"tls_server_name": "axw5QPL5",
"tls_skip_verify": true,
"timeout": "18913s",
"ttl": "44743s",
"deregister_critical_service_after": "8482s"
},
{
@ -437,7 +432,6 @@
"tls_server_name": "7uwWOnUS",
"tls_skip_verify": true,
"timeout": "38282s",
"ttl": "1181s",
"deregister_critical_service_after": "4992s"
}
],
@ -476,7 +470,6 @@
"tls_server_name": "4f191d4F",
"tls_skip_verify": true,
"timeout": "38333s",
"ttl": "57201s",
"deregister_critical_service_after": "44214s"
},
"connect": {
@ -518,7 +511,6 @@
"tls_server_name": "f43ouY7a",
"tls_skip_verify": true,
"timeout": "34738s",
"ttl": "22773s",
"deregister_critical_service_after": "84282s"
},
{
@ -526,22 +518,7 @@
"name": "PQSaPWlT",
"notes": "jKChDOdl",
"status": "5qFz6OZn",
"args": ["NMtYWlT9", "vj74JXsm"],
"http": "1LBDJhw4",
"header": {
"cXPmnv1M": [ "imDqfaBx", "NFxZ1bQe" ],
"vr7wY7CS": [ "EtCoNPPL", "9vAarJ5s" ]
},
"method": "wzByP903",
"body": "4I8ucZgZ",
"tcp": "2exjZIGE",
"h2ping": "jTDuR1DC",
"interval": "5656s",
"output_max_size": 4096,
"docker_container_id": "5tDBWpfA",
"shell": "rlTpLM8s",
"tls_server_name": "sOv5WTtp",
"tls_skip_verify": true,
"timeout": "4868s",
"ttl": "11222s",
"deregister_critical_service_after": "68482s"

View File

@ -41,6 +41,7 @@ type CheckDefinition struct {
Timeout time.Duration
TTL time.Duration
SuccessBeforePassing int
FailuresBeforeWarning int
FailuresBeforeCritical int
DeregisterCriticalServiceAfter time.Duration
OutputMaxSize int
@ -196,6 +197,7 @@ func (c *CheckDefinition) CheckType() *CheckType {
Timeout: c.Timeout,
TTL: c.TTL,
SuccessBeforePassing: c.SuccessBeforePassing,
FailuresBeforeWarning: c.FailuresBeforeWarning,
FailuresBeforeCritical: c.FailuresBeforeCritical,
DeregisterCriticalServiceAfter: c.DeregisterCriticalServiceAfter,
}

View File

@ -49,6 +49,7 @@ type CheckType struct {
Timeout time.Duration
TTL time.Duration
SuccessBeforePassing int
FailuresBeforeWarning int
FailuresBeforeCritical int
// Definition fields used when exposing checks through a proxy
@ -182,6 +183,10 @@ func (c *CheckType) Validate() error {
if c.OutputMaxSize < 0 {
return fmt.Errorf("MaxOutputMaxSize must be positive")
}
if c.FailuresBeforeWarning > c.FailuresBeforeCritical {
return fmt.Errorf("FailuresBeforeWarning can't be higher than FailuresBeforeCritical")
}
return nil
}

View File

@ -1,8 +1,11 @@
package structs
import (
"github.com/hashicorp/consul/lib"
"fmt"
"github.com/hashicorp/go-multierror"
"github.com/hashicorp/consul/lib"
)
// ServiceDefinition is used to JSON decode the Service definitions. For
@ -123,7 +126,11 @@ func (s *ServiceDefinition) Validate() error {
if err := s.NodeService().Validate(); err != nil {
result = multierror.Append(result, err)
}
for _, c := range s.Checks {
if err := c.Validate(); err != nil {
return fmt.Errorf("check %q: %s", c.Name, err)
}
}
return result
}

View File

@ -330,6 +330,7 @@ type AgentServiceCheck struct {
AliasNode string `json:",omitempty"`
AliasService string `json:",omitempty"`
SuccessBeforePassing int `json:",omitempty"`
FailuresBeforeWarning int `json:",omitempty"`
FailuresBeforeCritical int `json:",omitempty"`
// In Consul 0.7 and later, checks that are associated with a service

View File

@ -1,4 +1,4 @@
#!/bin/bash
#!/usr/bin/env bash
SCRIPT_NAME="$(basename ${BASH_SOURCE[0]})"
pushd $(dirname ${BASH_SOURCE[0]}) > /dev/null
SCRIPT_DIR=$(pwd)

View File

@ -30,6 +30,7 @@ func CheckTypeToStructs(s CheckType) structs.CheckType {
t.TTL = s.TTL
t.SuccessBeforePassing = int(s.SuccessBeforePassing)
t.FailuresBeforeCritical = int(s.FailuresBeforeCritical)
t.FailuresBeforeWarning = int(s.FailuresBeforeWarning)
t.ProxyHTTP = s.ProxyHTTP
t.ProxyGRPC = s.ProxyGRPC
t.DeregisterCriticalServiceAfter = s.DeregisterCriticalServiceAfter
@ -62,6 +63,7 @@ func NewCheckTypeFromStructs(t structs.CheckType) CheckType {
s.TTL = t.TTL
s.SuccessBeforePassing = int32(t.SuccessBeforePassing)
s.FailuresBeforeCritical = int32(t.FailuresBeforeCritical)
s.FailuresBeforeWarning = int32(t.FailuresBeforeWarning)
s.ProxyHTTP = t.ProxyHTTP
s.ProxyGRPC = t.ProxyGRPC
s.DeregisterCriticalServiceAfter = t.DeregisterCriticalServiceAfter

View File

@ -232,6 +232,8 @@ type CheckType struct {
// mog: func-to=int func-from=int32
SuccessBeforePassing int32 `protobuf:"varint,21,opt,name=SuccessBeforePassing,proto3" json:"SuccessBeforePassing,omitempty"`
// mog: func-to=int func-from=int32
FailuresBeforeWarning int32 `protobuf:"varint,29,opt,name=FailuresBeforeWarning,proto3" json:"FailuresBeforeWarning,omitempty"`
// mog: func-to=int func-from=int32
FailuresBeforeCritical int32 `protobuf:"varint,22,opt,name=FailuresBeforeCritical,proto3" json:"FailuresBeforeCritical,omitempty"`
// Definition fields used when exposing checks through a proxy
ProxyHTTP string `protobuf:"bytes,23,opt,name=ProxyHTTP,proto3" json:"ProxyHTTP,omitempty"`
@ -289,74 +291,75 @@ func init() {
func init() { proto.RegisterFile("proto/pbservice/healthcheck.proto", fileDescriptor_8a6f7448747c9fbe) }
var fileDescriptor_8a6f7448747c9fbe = []byte{
// 1062 bytes of a gzipped FileDescriptorProto
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}
func (m *HealthCheck) Marshal() (dAtA []byte, err error) {
@ -757,6 +760,13 @@ func (m *CheckType) MarshalToSizedBuffer(dAtA []byte) (int, error) {
_ = i
var l int
_ = l
if m.FailuresBeforeWarning != 0 {
i = encodeVarintHealthcheck(dAtA, i, uint64(m.FailuresBeforeWarning))
i--
dAtA[i] = 0x1
i--
dAtA[i] = 0xe8
}
if len(m.H2PING) > 0 {
i -= len(m.H2PING)
copy(dAtA[i:], m.H2PING)
@ -1296,6 +1306,9 @@ func (m *CheckType) Size() (n int) {
if l > 0 {
n += 2 + l + sovHealthcheck(uint64(l))
}
if m.FailuresBeforeWarning != 0 {
n += 2 + sovHealthcheck(uint64(m.FailuresBeforeWarning))
}
return n
}
@ -3656,6 +3669,25 @@ func (m *CheckType) Unmarshal(dAtA []byte) error {
}
m.H2PING = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 29:
if wireType != 0 {
return fmt.Errorf("proto: wrong wireType = %d for field FailuresBeforeWarning", wireType)
}
m.FailuresBeforeWarning = 0
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowHealthcheck
}
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
m.FailuresBeforeWarning |= int32(b&0x7F) << shift
if b < 0x80 {
break
}
}
default:
iNdEx = preIndex
skippy, err := skipHealthcheck(dAtA[iNdEx:])

View File

@ -136,6 +136,8 @@ message CheckType {
// mog: func-to=int func-from=int32
int32 SuccessBeforePassing = 21;
// mog: func-to=int func-from=int32
int32 FailuresBeforeWarning = 29;
// mog: func-to=int func-from=int32
int32 FailuresBeforeCritical = 22;
// Definition fields used when exposing checks through a proxy

View File

@ -240,11 +240,16 @@ The table below shows this endpoint's support for
- `SuccessBeforePassing` `(int: 0)` - Specifies the number of consecutive successful
results required before check status transitions to passing. Available for HTTP,
TCP, gRPC, Docker & Monitor checks.
TCP, gRPC, Docker & Monitor checks. Added in Consul 1.7.0.
- `FailuresBeforeWarning` `(int: 0)` - Specifies the number of consecutive unsuccessful
results required before check status transitions to warning. Defaults to the same value
as `FailuresBeforeCritical`. Values higher than `FailuresBeforeCritical` are invalid.
Available for HTTP, TCP, gRPC, Docker & Monitor checks. Added in Consul 1.11.0.
- `FailuresBeforeCritical` `(int: 0)` - Specifies the number of consecutive unsuccessful
results required before check status transitions to critical. Available for HTTP,
TCP, gRPC, Docker & Monitor checks.
TCP, gRPC, Docker & Monitor checks. Added in Consul 1.7.0.
### Sample Payload

View File

@ -413,12 +413,23 @@ key in your configuration file.
}
```
## Success/Failures before passing/critical
## Success/Failures before passing/warning/critical
In Consul 1.7.0 and later, a check may be configured to become passing/critical
only after a specified number of consecutive checks return passing/critical.
To prevent flapping health checks, and limit the load they cause on the cluster,
a health check may be configured to become passing/warning/critical only after a
specified number of consecutive checks return passing/critical.
The status will not transition states until the configured threshold is reached.
* `success_before_passing` - Number of consecutive successful results required
before check status transitions to passing. Defaults to `0`. Added in Consul 1.7.0.
* `failures_before_warning` - Number of consecutive unsuccessful results required
before check status transitions to warning. Defaults to the same value as that of
`failures_before_critical` to maintain the expected behavior of not changing the
status of serivce checks to `warning` before `critical` unless configured to do so.
Values higher than `failures_before_critical` are invalid. Added in Consul 1.11.0.
* `failures_before_critical` - Number of consecutive unsuccessful results required
before check status transitions to critical. Defaults to `0`. Added in Consul 1.7.0.
This feature is available for HTTP, TCP, gRPC, Docker & Monitor checks.
By default, both passing and critical thresholds will be set to 0 so the check
status will always reflect the last check result.
@ -432,6 +443,7 @@ status will always reflect the last check result.
"interval": "10s",
"timeout": "1s",
"success_before_passing": 3,
"failures_before_warning": 1,
"failures_before_critical": 3
}
]