Change:
<ins> /* Copyright 2015 The Kubernetes Authors All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package executor import ( "sync/atomic" "testing" "time" "github.com/golang/glog" bindings "github.com/mesos/mesos-go/executor" ) type suicideTracker struct { suicideWatcher stops  uint32 resets uint32 timers uint32 jumps  *uint32 } func (t *suicideTracker) Reset(d time.Duration) bool { defer func() { t.resets++ }() return t.suicideWatcher.Reset(d) } func (t *suicideTracker) Stop() bool { defer func() { t.stops++ }() return t.suicideWatcher.Stop() } func (t *suicideTracker) Next(d time.Duration, driver bindings.ExecutorDriver, f jumper) suicideWatcher { tracker := &suicideTracker{ stops:  t.stops, resets: t.resets, jumps:  t.jumps, timers: t.timers + 1, } jumper := tracker.makeJumper(f) tracker.suicideWatcher = t.suicideWatcher.Next(d, driver, jumper) return tracker } func (t *suicideTracker) makeJumper(_ jumper) jumper { return jumper(func(driver bindings.ExecutorDriver, cancel <-chan struct{}) { glog.Warningln("jumping?!") if t.jumps != nil { atomic.AddUint32(t.jumps, 1) } }) } func TestSuicide_zeroTimeout(t *testing.T) { defer glog.Flush() k := New(Config{}) tracker := &suicideTracker{suicideWatcher: k.suicideWatch} k.suicideWatch = tracker ch := k.resetSuicideWatch(nil) select { case <-ch: case <-time.After(2 * time.Second): t.Fatalf("timeout waiting for reset of suicide watch") } if tracker.stops != 0 { t.Fatalf("expected no stops since suicideWatchTimeout was never set") } if tracker.resets != 0 { t.Fatalf("expected no resets since suicideWatchTimeout was never set") } if tracker.timers != 0 { t.Fatalf("expected no timers since suicideWatchTimeout was never set") } } func TestSuicide_WithTasks(t *testing.T) { defer glog.Flush() k := New(Config{ SuicideTimeout: 50 * time.Millisecond, }) jumps := uint32(0) tracker := &suicideTracker{suicideWatcher: k.suicideWatch, jumps: &jumps} k.suicideWatch = tracker k.tasks["foo"] = &kuberTask{} // prevent suicide attempts from succeeding // call reset with a nil timer glog.Infoln("resetting suicide watch with 1 task") select { case <-k.resetSuicideWatch(nil): tracker = k.suicideWatch.(*suicideTracker) if tracker.stops != 1 { t.Fatalf("expected suicide attempt to Stop() since there are registered tasks") } if tracker.resets != 0 { t.Fatalf("expected no resets since") } if tracker.timers != 0 { t.Fatalf("expected no timers since") } case <-time.After(1 * time.Second): t.Fatalf("initial suicide watch setup failed") } delete(k.tasks, "foo") // zero remaining tasks k.suicideTimeout = 1500 * time.Millisecond suicideStart := time.Now() // reset the suicide watch, which should actually start a timer now glog.Infoln("resetting suicide watch with 0 tasks") select { case <-k.resetSuicideWatch(nil): tracker = k.suicideWatch.(*suicideTracker) if tracker.stops != 1 { t.Fatalf("did not expect suicide attempt to Stop() since there are no registered tasks") } if tracker.resets != 1 { t.Fatalf("expected 1 resets instead of %d", tracker.resets) } if tracker.timers != 1 { t.Fatalf("expected 1 timers instead of %d", tracker.timers) } case <-time.After(1 * time.Second): t.Fatalf("2nd suicide watch setup failed") } k.lock.Lock() k.tasks["foo"] = &kuberTask{} // prevent suicide attempts from succeeding k.lock.Unlock() // reset the suicide watch, which should stop the existing timer glog.Infoln("resetting suicide watch with 1 task") select { case <-k.resetSuicideWatch(nil): tracker = k.suicideWatch.(*suicideTracker) if tracker.stops != 2 { t.Fatalf("expected 2 stops instead of %d since there are registered tasks", tracker.stops) } if tracker.resets != 1 { t.Fatalf("expected 1 resets instead of %d", tracker.resets) } if tracker.timers != 1 { t.Fatalf("expected 1 timers instead of %d", tracker.timers) } case <-time.After(1 * time.Second): t.Fatalf("3rd suicide watch setup failed") } k.lock.Lock() delete(k.tasks, "foo") // allow suicide attempts to schedule k.lock.Unlock() // reset the suicide watch, which should reset a stopped timer glog.Infoln("resetting suicide watch with 0 tasks") select { case <-k.resetSuicideWatch(nil): tracker = k.suicideWatch.(*suicideTracker) if tracker.stops != 2 { t.Fatalf("expected 2 stops instead of %d since there are no registered tasks", tracker.stops) } if tracker.resets != 2 { t.Fatalf("expected 2 resets instead of %d", tracker.resets) } if tracker.timers != 1 { t.Fatalf("expected 1 timers instead of %d", tracker.timers) } case <-time.After(1 * time.Second): t.Fatalf("4th suicide watch setup failed") } sinceWatch := time.Since(suicideStart) time.Sleep(3*time.Second - sinceWatch) // give the first timer to misfire (it shouldn't since Stop() was called) if j := atomic.LoadUint32(&jumps); j != 1 { t.Fatalf("expected 1 jumps instead of %d since stop was called", j) } else { glog.Infoln("jumps verified") // glog so we get a timestamp } } </ins>

Discussion:
<!-- Please use this template while reporting a bug and provide as much info as possible. Not doing so may result in your bug not being addressed in a timely manner. Thanks! If the matter is security related, please disclose it privately via --What happened: Followed the documentation on rules to limit group Id's to non-superuser (root) using the rule. The creation attempt failed with: From PSP yaml: What you expected to happen: Successfully create a new PSP for non-superuser (root) group privileges using available rule values (which actually seems to be , , according the the ) How to reproduce it (as minimally and precisely as possible): Attempt to create a PSP with a rule set to Anything else we need to know?: I don't think so Environment: Kubernetes version (use ): , looks to affect , and doc as well Cloud provider or hardware configuration: IBM Cloud OS (e.g: ):Kernel (e.g. ): Install tools: Others:
/sig docs
/assign
thanks will send out a fix next week
I wonder whether this is a bug in implementation or the document. Is this really a documentation issue?
yes, RunAsGroup does not support MustRunAsNonRoot
Got it. Thank you!
/priority important-soon