// launchExecutorServer returns a chan that closes upon kubelet-executor death. since the kubelet-
// executor doesn't support failover right now, the right thing to do is to fail completely since all
// pods will be lost upon restart and we want mesos to recover the resources from them.
func (ms *MinionServer) launchExecutorServer(containerID string) <-chan struct{} {
allArgs := os.Args[2:]
// filter out minion flags, leaving those for the executor
executorFlags := pflag.NewFlagSet("executor", pflag.ContinueOnError)
executorFlags.SetOutput(ioutil.Discard)
ms.AddExecutorFlags(executorFlags)
executorArgs, _ := filterArgsByFlagSet(allArgs, executorFlags)
// disable resource-container; mesos slave doesn't like sub-containers yet
executorArgs = append(executorArgs, "--kubelet-cgroups=")
appendOptional := func(name, value string) {
if value != "" {
executorArgs = append(executorArgs, "--"+name+"="+value)
}
}
appendOptional("cgroup-root", ms.cgroupRoot)
// forward global cadvisor flag values to the executor
// TODO(jdef) remove this code once cadvisor global flags have been cleaned up
appendOptional(flagutil.Cadvisor.HousekeepingInterval.NameValue())
appendOptional(flagutil.Cadvisor.GlobalHousekeepingInterval.NameValue())
// forward containerID so that the executor may pass it along to containers that it launches
var ctidOpt tasks.Option
ctidOpt = func(t *tasks.Task) tasks.Option {
oldenv := t.Env[:]
t.Env = append(t.Env, "MESOS_EXECUTOR_CONTAINER_UUID="+containerID)
return func(t2 *tasks.Task) tasks.Option {
t2.Env = oldenv
return ctidOpt
}
}
// run executor and quit minion server when this exits cleanly
execDied := make(chan struct{})
ms.launchHyperkubeServer(hyperkube.CommandExecutor, executorArgs, executorLogFilename, tasks.NoRespawn(execDied), ctidOpt)
return execDied
}
// launchExecutorServer returns a chan that closes upon kubelet-executor death. since the kubelet-
// executor doesn't support failover right now, the right thing to do is to fail completely since all
// pods will be lost upon restart and we want mesos to recover the resources from them.
func (ms *MinionServer) launchExecutorServer(containerID string) <-chan struct{} {
allArgs := os.Args[1:]
// filter out minion flags, leaving those for the executor
executorFlags := pflag.NewFlagSet("executor", pflag.ContinueOnError)
executorFlags.SetOutput(ioutil.Discard)
ms.AddExecutorFlags(executorFlags)
executorArgs, _ := filterArgsByFlagSet(allArgs, executorFlags)
// disable resource-container; mesos slave doesn't like sub-containers yet
executorArgs = append(executorArgs, "--kubelet-cgroups=")
if ms.cgroupRoot != "" {
executorArgs = append(executorArgs, "--cgroup-root="+ms.cgroupRoot)
}
// forward containerID so that the executor may pass it along to containers that it launches
var ctidOpt tasks.Option
ctidOpt = func(t *tasks.Task) tasks.Option {
oldenv := t.Env[:]
t.Env = append(t.Env, "MESOS_EXECUTOR_CONTAINER_UUID="+containerID)
return func(t2 *tasks.Task) tasks.Option {
t2.Env = oldenv
return ctidOpt
}
}
// run executor and quit minion server when this exits cleanly
execDied := make(chan struct{})
ms.launchHyperkubeServer(hyperkube.CommandExecutor, executorArgs, executorLogFilename, tasks.NoRespawn(execDied), ctidOpt)
return execDied
}