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Merge pull request #32504 from dongluochen/healthcheck_duration

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do not allow duration less than 1 ms in healthcheck parameters
This commit is contained in:
Brian Goff 2017-04-27 23:54:00 -04:00 • committed by GitHub
commit a7519152d9
11 changed files with 84 additions and 40 deletions
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6
api/swagger.yaml
View file

@ -499,16 +499,16 @@ definitions:
items:
type: "string"
Interval:
description: "The time to wait between checks in nanoseconds. It should be 0 or not less than 1000000000(1s). 0 means inherit."
description: "The time to wait between checks in nanoseconds. It should be 0 or at least 1000000 (1 ms). 0 means inherit."
type: "integer"
Timeout:
description: "The time to wait before considering the check to have hung. It should be 0 or not less than 1000000000(1s). 0 means inherit."
description: "The time to wait before considering the check to have hung. It should be 0 or at least 1000000 (1 ms). 0 means inherit."
type: "integer"
Retries:
description: "The number of consecutive failures needed to consider a container as unhealthy. 0 means inherit."
type: "integer"
StartPeriod:
description: "Start period for the container to initialize before starting health-retries countdown in nanoseconds. 0 means inherit."
description: "Start period for the container to initialize before starting health-retries countdown in nanoseconds. It should be 0 or at least 1000000 (1 ms). 0 means inherit."
type: "integer"
HostConfig:

6
api/types/container/config.go
View file

@ -7,6 +7,12 @@ import (
"github.com/docker/go-connections/nat"
)
// MinimumDuration puts a minimum on user configured duration.
// This is to prevent API error on time unit. For example, API may
// set 3 as healthcheck interval with intention of 3 seconds, but
// Docker interprets it as 3 nanoseconds.
const MinimumDuration = 1 * time.Millisecond
// HealthConfig holds configuration settings for the HEALTHCHECK feature.
type HealthConfig struct {
// Test is the test to perform to check that the container is healthy.

6
builder/dockerfile/dispatchers.go
View file

@ -486,7 +486,7 @@ func cmd(req dispatchRequest) error {
}
// parseOptInterval(flag) is the duration of flag.Value, or 0 if
// empty. An error is reported if the value is given and less than 1 second.
// empty. An error is reported if the value is given and less than minimum duration.
func parseOptInterval(f *Flag) (time.Duration, error) {
s := f.Value
if s == "" {
@ -496,8 +496,8 @@ func parseOptInterval(f *Flag) (time.Duration, error) {
if err != nil {
return 0, err
}
if d < time.Duration(time.Second) {
return 0, fmt.Errorf("Interval %#v cannot be less than 1 second", f.name)
if d < time.Duration(container.MinimumDuration) {
return 0, fmt.Errorf("Interval %#v cannot be less than %s", f.name, container.MinimumDuration)
}
return d, nil
}

18
builder/dockerfile/dispatchers_test.go
View file

@ -401,3 +401,21 @@ func TestShell(t *testing.T) {
expectedShell := strslice.StrSlice([]string{shellCmd})
assert.Equal(t, expectedShell, req.runConfig.Shell)
}
func TestParseOptInterval(t *testing.T) {
flInterval := &Flag{
name: "interval",
flagType: stringType,
Value: "50ns",
}
_, err := parseOptInterval(flInterval)
if err == nil {
t.Fatalf("Error should be presented for interval %s", flInterval.Value)
}
flInterval.Value = "1ms"
_, err = parseOptInterval(flInterval)
if err != nil {
t.Fatalf("Unexpected error: %s", err.Error())
}
}

6
cli/command/container/opts.go
View file

@ -229,10 +229,10 @@ func addFlags(flags *pflag.FlagSet) *containerOptions {
// Health-checking
flags.StringVar(&copts.healthCmd, "health-cmd", "", "Command to run to check health")
flags.DurationVar(&copts.healthInterval, "health-interval", 0, "Time between running the check (ns|us|ms|s|m|h) (default 0s)")
flags.DurationVar(&copts.healthInterval, "health-interval", 0, "Time between running the check (ms|s|m|h) (default 0s)")
flags.IntVar(&copts.healthRetries, "health-retries", 0, "Consecutive failures needed to report unhealthy")
flags.DurationVar(&copts.healthTimeout, "health-timeout", 0, "Maximum time to allow one check to run (ns|us|ms|s|m|h) (default 0s)")
flags.DurationVar(&copts.healthStartPeriod, "health-start-period", 0, "Start period for the container to initialize before starting health-retries countdown (ns|us|ms|s|m|h) (default 0s)")
flags.DurationVar(&copts.healthTimeout, "health-timeout", 0, "Maximum time to allow one check to run (ms|s|m|h) (default 0s)")
flags.DurationVar(&copts.healthStartPeriod, "health-start-period", 0, "Start period for the container to initialize before starting health-retries countdown (ms|s|m|h) (default 0s)")
flags.SetAnnotation("health-start-period", "version", []string{"1.29"})
flags.BoolVar(&copts.noHealthcheck, "no-healthcheck", false, "Disable any container-specified HEALTHCHECK")

6
cli/command/service/opts.go
View file

@ -802,13 +802,13 @@ func addServiceFlags(flags *pflag.FlagSet, opts *serviceOptions, defaultFlagValu
flags.StringVar(&opts.healthcheck.cmd, flagHealthCmd, "", "Command to run to check health")
flags.SetAnnotation(flagHealthCmd, "version", []string{"1.25"})
flags.Var(&opts.healthcheck.interval, flagHealthInterval, "Time between running the check (ns|us|ms|s|m|h)")
flags.Var(&opts.healthcheck.interval, flagHealthInterval, "Time between running the check (ms|s|m|h)")
flags.SetAnnotation(flagHealthInterval, "version", []string{"1.25"})
flags.Var(&opts.healthcheck.timeout, flagHealthTimeout, "Maximum time to allow one check to run (ns|us|ms|s|m|h)")
flags.Var(&opts.healthcheck.timeout, flagHealthTimeout, "Maximum time to allow one check to run (ms|s|m|h)")
flags.SetAnnotation(flagHealthTimeout, "version", []string{"1.25"})
flags.IntVar(&opts.healthcheck.retries, flagHealthRetries, 0, "Consecutive failures needed to report unhealthy")
flags.SetAnnotation(flagHealthRetries, "version", []string{"1.25"})
flags.Var(&opts.healthcheck.startPeriod, flagHealthStartPeriod, "Start period for the container to initialize before counting retries towards unstable (ns|us|ms|s|m|h)")
flags.Var(&opts.healthcheck.startPeriod, flagHealthStartPeriod, "Start period for the container to initialize before counting retries towards unstable (ms|s|m|h)")
flags.SetAnnotation(flagHealthStartPeriod, "version", []string{"1.29"})
flags.BoolVar(&opts.healthcheck.noHealthcheck, flagNoHealthcheck, false, "Disable any container-specified HEALTHCHECK")
flags.SetAnnotation(flagNoHealthcheck, "version", []string{"1.25"})

12
daemon/container.go
View file

@ -244,20 +244,20 @@ func (daemon *Daemon) verifyContainerSettings(hostConfig *containertypes.HostCon
// Validate the healthcheck params of Config
if config.Healthcheck != nil {
if config.Healthcheck.Interval != 0 && config.Healthcheck.Interval < time.Second {
return nil, fmt.Errorf("Interval in Healthcheck cannot be less than one second")
if config.Healthcheck.Interval != 0 && config.Healthcheck.Interval < containertypes.MinimumDuration {
return nil, fmt.Errorf("Interval in Healthcheck cannot be less than %s", containertypes.MinimumDuration)
}
if config.Healthcheck.Timeout != 0 && config.Healthcheck.Timeout < time.Second {
return nil, fmt.Errorf("Timeout in Healthcheck cannot be less than one second")
if config.Healthcheck.Timeout != 0 && config.Healthcheck.Timeout < containertypes.MinimumDuration {
return nil, fmt.Errorf("Timeout in Healthcheck cannot be less than %s", containertypes.MinimumDuration)
}
if config.Healthcheck.Retries < 0 {
return nil, fmt.Errorf("Retries in Healthcheck cannot be negative")
}
if config.Healthcheck.StartPeriod < 0 {
return nil, fmt.Errorf("StartPeriod in Healthcheck cannot be negative")
if config.Healthcheck.StartPeriod != 0 && config.Healthcheck.StartPeriod < containertypes.MinimumDuration {
return nil, fmt.Errorf("StartPeriod in Healthcheck cannot be less than %s", containertypes.MinimumDuration)
}
}
}

8
docs/api/v1.24.md
View file

@ -285,7 +285,8 @@ Create a container
"Test": ["CMD-SHELL", "curl localhost:3000"],
"Interval": 1000000000,
"Timeout": 10000000000,
"Retries": 10
"Retries": 10,
"StartPeriod": 60000000000
},
"WorkingDir": "",
"NetworkDisabled": false,
@ -397,9 +398,10 @@ Create a container
+ `{"NONE"}` disable healthcheck
+ `{"CMD", args...}` exec arguments directly
+ `{"CMD-SHELL", command}` run command with system's default shell
- **Interval** - The time to wait between checks in nanoseconds. It should be 0 or not less than 1000000000(1s). 0 means inherit.
- **Timeout** - The time to wait before considering the check to have hung. It should be 0 or not less than 1000000000(1s). 0 means inherit.
- **Interval** - The time to wait between checks in nanoseconds. It should be 0 or at least 1000000 (1 ms). 0 means inherit.
- **Timeout** - The time to wait before considering the check to have hung. It should be 0 or at least 1000000 (1 ms). 0 means inherit.
- **Retries** - The number of consecutive failures needed to consider a container as unhealthy. 0 means inherit.
- **StartPeriod** - The time to wait for container initialization before starting health-retries countdown in nanoseconds. It should be 0 or at least 1000000 (1 ms). 0 means inherit.
- **WorkingDir** - A string specifying the working directory for commands to
run in.
- **NetworkDisabled** - Boolean value, when true disables networking for the

6
docs/reference/commandline/service_create.md
View file

@ -33,10 +33,10 @@ Options:
--env-file list Read in a file of environment variables
--group list Set one or more supplementary user groups for the container
--health-cmd string Command to run to check health
--health-interval duration Time between running the check (ns|us|ms|s|m|h)
--health-interval duration Time between running the check (ms|s|m|h)
--health-retries int Consecutive failures needed to report unhealthy
--health-start-period duration Start period for the container to initialize before counting retries towards unstable (ns|us|ms|s|m|h)
--health-timeout duration Maximum time to allow one check to run (ns|us|ms|s|m|h)
--health-start-period duration Start period for the container to initialize before counting retries towards unstable (ms|s|m|h)
--health-timeout duration Maximum time to allow one check to run (ms|s|m|h)
--help Print usage
--host list Set one or more custom host-to-IP mappings (host:ip)
--hostname string Container hostname

6
docs/reference/commandline/service_update.md
View file

@ -41,10 +41,10 @@ Options:
--group-add list Add an additional supplementary user group to the container
--group-rm list Remove a previously added supplementary user group from the container
--health-cmd string Command to run to check health
--health-interval duration Time between running the check (ns|us|ms|s|m|h)
--health-interval duration Time between running the check (ms|s|m|h)
--health-retries int Consecutive failures needed to report unhealthy
--health-start-period duration Start period for the container to initialize before counting retries towards unstable (ns|us|ms|s|m|h)
--health-timeout duration Maximum time to allow one check to run (ns|us|ms|s|m|h)
--health-start-period duration Start period for the container to initialize before counting retries towards unstable (ms|s|m|h)
--health-timeout duration Maximum time to allow one check to run (ms|s|m|h)
--help Print usage
--host-add list Add or update a custom host-to-IP mapping (host:ip)
--host-rm list Remove a custom host-to-IP mapping (host:ip)

44
integration-cli/docker_api_create_test.go
View file

@ -1,9 +1,11 @@
package main
import (
"fmt"
"net/http"
"time"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/integration-cli/checker"
"github.com/docker/docker/integration-cli/request"
"github.com/go-check/check"
@ -91,8 +93,8 @@ func (s *DockerSuite) TestAPICreateWithInvalidHealthcheckParams(c *check.C) {
config := map[string]interface{}{
"Image": "busybox",
"Healthcheck": map[string]interface{}{
"Interval": time.Duration(-10000000),
"Timeout": time.Duration(1000000000),
"Interval": -10 * time.Millisecond,
"Timeout": time.Second,
"Retries": int(1000),
},
}
@ -100,39 +102,38 @@ func (s *DockerSuite) TestAPICreateWithInvalidHealthcheckParams(c *check.C) {
status, body, err := request.SockRequest("POST", "/containers/create?name="+name, config, daemonHost())
c.Assert(err, check.IsNil)
c.Assert(status, check.Equals, http.StatusInternalServerError)
expected := "Interval in Healthcheck cannot be less than one second"
expected := fmt.Sprintf("Interval in Healthcheck cannot be less than %s", container.MinimumDuration)
c.Assert(getErrorMessage(c, body), checker.Contains, expected)
// test invalid Interval in Healthcheck: larger than 0s but less than 1s
// test invalid Interval in Healthcheck: larger than 0s but less than 1ms
name = "test2"
config = map[string]interface{}{
"Image": "busybox",
"Healthcheck": map[string]interface{}{
"Interval": time.Duration(500000000),
"Timeout": time.Duration(1000000000),
"Interval": 500 * time.Microsecond,
"Timeout": time.Second,
"Retries": int(1000),
},
}
status, body, err = request.SockRequest("POST", "/containers/create?name="+name, config, daemonHost())
c.Assert(err, check.IsNil)
c.Assert(status, check.Equals, http.StatusInternalServerError)
expected = "Interval in Healthcheck cannot be less than one second"
c.Assert(getErrorMessage(c, body), checker.Contains, expected)
// test invalid Timeout in Healthcheck: less than 1s
// test invalid Timeout in Healthcheck: less than 1ms
name = "test3"
config = map[string]interface{}{
"Image": "busybox",
"Healthcheck": map[string]interface{}{
"Interval": time.Duration(1000000000),
"Timeout": time.Duration(-100000000),
"Interval": time.Second,
"Timeout": -100 * time.Millisecond,
"Retries": int(1000),
},
}
status, body, err = request.SockRequest("POST", "/containers/create?name="+name, config, daemonHost())
c.Assert(err, check.IsNil)
c.Assert(status, check.Equals, http.StatusInternalServerError)
expected = "Timeout in Healthcheck cannot be less than one second"
expected = fmt.Sprintf("Timeout in Healthcheck cannot be less than %s", container.MinimumDuration)
c.Assert(getErrorMessage(c, body), checker.Contains, expected)
// test invalid Retries in Healthcheck: less than 0
@ -140,8 +141,8 @@ func (s *DockerSuite) TestAPICreateWithInvalidHealthcheckParams(c *check.C) {
config = map[string]interface{}{
"Image": "busybox",
"Healthcheck": map[string]interface{}{
"Interval": time.Duration(1000000000),
"Timeout": time.Duration(1000000000),
"Interval": time.Second,
"Timeout": time.Second,
"Retries": int(-10),
},
}
@ -150,4 +151,21 @@ func (s *DockerSuite) TestAPICreateWithInvalidHealthcheckParams(c *check.C) {
c.Assert(status, check.Equals, http.StatusInternalServerError)
expected = "Retries in Healthcheck cannot be negative"
c.Assert(getErrorMessage(c, body), checker.Contains, expected)
// test invalid StartPeriod in Healthcheck: not 0 and less than 1ms
name = "test3"
config = map[string]interface{}{
"Image": "busybox",
"Healthcheck": map[string]interface{}{
"Interval": time.Second,
"Timeout": time.Second,
"Retries": int(1000),
"StartPeriod": 100 * time.Microsecond,
},
}
status, body, err = request.SockRequest("POST", "/containers/create?name="+name, config, daemonHost())
c.Assert(err, check.IsNil)
c.Assert(status, check.Equals, http.StatusInternalServerError)
expected = fmt.Sprintf("StartPeriod in Healthcheck cannot be less than %s", container.MinimumDuration)
c.Assert(getErrorMessage(c, body), checker.Contains, expected)
}