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Add support for startup healthchecks

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Startup healthchecks are similar to K8S startup probes, in that
they are a separate check from the regular healthcheck that runs
before it. If the startup healthcheck fails repeatedly, the
associated container is restarted.

Signed-off-by: Matthew Heon <matthew.heon@pm.me>
This commit is contained in:
Matthew Heon
2022-04-15 19:22:12 -04:00
parent 935c8eb5ca
commit d16129330d
24 changed files with 551 additions and 147 deletions
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42
cmd/podman/common/create.go
View File

@ -180,7 +180,7 @@ func DefineCreateFlags(cmd *cobra.Command, cf *entities.ContainerCreateOptions,
createFlags.StringVar(
&cf.HealthInterval,
healthIntervalFlagName, define.DefaultHealthCheckInterval,
"set an interval for the healthchecks (a value of disable results in no automatic timer setup)",
"set an interval for the healthcheck (a value of disable results in no automatic timer setup)",
)
_ = cmd.RegisterFlagCompletionFunc(healthIntervalFlagName, completion.AutocompleteNone)
@ -428,6 +428,46 @@ func DefineCreateFlags(cmd *cobra.Command, cf *entities.ContainerCreateOptions,
)
_ = cmd.RegisterFlagCompletionFunc(secretFlagName, AutocompleteSecrets)
startupHCCmdFlagName := "health-startup-cmd"
createFlags.StringVar(
&cf.StartupHCCmd,
startupHCCmdFlagName, "",
"Set a startup healthcheck command for the container",
)
_ = cmd.RegisterFlagCompletionFunc(startupHCCmdFlagName, completion.AutocompleteNone)
startupHCIntervalFlagName := "health-startup-interval"
createFlags.StringVar(
&cf.StartupHCInterval,
startupHCIntervalFlagName, define.DefaultHealthCheckInterval,
"Set an interval for the startup healthcheck",
)
_ = cmd.RegisterFlagCompletionFunc(startupHCIntervalFlagName, completion.AutocompleteNone)
startupHCRetriesFlagName := "health-startup-retries"
createFlags.UintVar(
&cf.StartupHCRetries,
startupHCRetriesFlagName, 0,
"Set the maximum number of retries before the startup healthcheck will restart the container",
)
_ = cmd.RegisterFlagCompletionFunc(startupHCRetriesFlagName, completion.AutocompleteNone)
startupHCSuccessesFlagName := "health-startup-success"
createFlags.UintVar(
&cf.StartupHCSuccesses,
startupHCSuccessesFlagName, 0,
"Set the number of consecutive successes before the startup healthcheck is marked as successful and the normal healthcheck begins (0 indicates any success will start the regular healthcheck)",
)
_ = cmd.RegisterFlagCompletionFunc(startupHCSuccessesFlagName, completion.AutocompleteNone)
startupHCTimeoutFlagName := "health-startup-timeout"
createFlags.StringVar(
&cf.StartupHCTimeout,
startupHCTimeoutFlagName, define.DefaultHealthCheckTimeout,
"Set the maximum amount of time that the startup healthcheck may take before it is considered failed",
)
_ = cmd.RegisterFlagCompletionFunc(startupHCTimeoutFlagName, completion.AutocompleteNone)
stopSignalFlagName := "stop-signal"
createFlags.StringVar(
&cf.StopSignal,

2
cmd/podman/healthcheck/run.go
View File

@ -35,7 +35,7 @@ func run(cmd *cobra.Command, args []string) error {
if err != nil {
return err
}
if response.Status == define.HealthCheckUnhealthy {
if response.Status == define.HealthCheckUnhealthy || response.Status == define.HealthCheckStarting {
registry.SetExitCode(1)
fmt.Println(response.Status)
}