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Merge pull request #43399 from derekwaynecarr/fix_node_e2e

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Automatic merge from submit-queue (batch tested with PRs 42452, 43399)

Fix faulty assumptions in summary API testing

**What this PR does / why we need it**:
1. on systemd, launch kubelet in dedicated part of cgroup hierarchy
1. bump allowable memory usage for busy box containers as my own local testing often showed values > 1mb which were valid per the memory limit settings we impose
1. there is a logic flaw today in how we report node.memory.stats that needs to be fixed in follow-on.

for the last issue, we look at `/sys/fs/cgroup/memory.stat[rss]` value which if you have global accounting enabled on systemd machines (as expected) will report 0 because nothing runs local to the root cgroup.  we really want to be showing the total_rss value for non-leaf cgroups so we get the full hierarchy of usage.
This commit is contained in:
Kubernetes Submit Queue 2017-03-20 15:23:35 -07:00 committed by GitHub
commit e4536e85b8
2 changed files with 32 additions and 12 deletions
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6
test/e2e_node/services/kubelet.go
View File

@ -108,12 +108,16 @@ func (e *E2EServices) startKubelet() (*server, error) {
// sense to test it that way
isSystemd = true
unitName := fmt.Sprintf("kubelet-%d.service", rand.Int31())
cmdArgs = append(cmdArgs, systemdRun, "--unit="+unitName, "--remain-after-exit", builder.GetKubeletServerBin())
cmdArgs = append(cmdArgs, systemdRun, "--unit="+unitName, "--slice=runtime.slice", "--remain-after-exit", builder.GetKubeletServerBin())
killCommand = exec.Command("systemctl", "kill", unitName)
restartCommand = exec.Command("systemctl", "restart", unitName)
e.logFiles["kubelet.log"] = logFileData{
journalctlCommand: []string{"-u", unitName},
}
cmdArgs = append(cmdArgs,
"--kubelet-cgroups=/kubelet.slice",
"--cgroup-root=/",
)
} else {
cmdArgs = append(cmdArgs, builder.GetKubeletServerBin())
cmdArgs = append(cmdArgs,

26
test/e2e_node/summary_test.go
View File

@ -84,7 +84,14 @@ var _ = framework.KubeDescribe("Summary API", func() {
"AvailableBytes": BeNil(),
"UsageBytes": bounded(1*mb, 10*gb),
"WorkingSetBytes": bounded(1*mb, 10*gb),
"RSSBytes": bounded(1*mb, 1*gb),
// today, this returns the value reported
// in /sys/fs/cgroup/memory.stat for rss
// this value should really return /sys/fs/cgroup/memory.stat total_rss
// as we really want the hierarchical value not the usage local to / cgroup.
// for now, i am updating the bounding box to the value as coded, but the
// value reported needs to change.
// rss only makes sense if you are leaf cgroup
"RSSBytes": bounded(0, 1*gb),
"PageFaults": bounded(1000, 1E9),
"MajorPageFaults": bounded(0, 100000),
}),
@ -131,7 +138,7 @@ var _ = framework.KubeDescribe("Summary API", func() {
"Time": recent(maxStatsAge),
"AvailableBytes": bounded(1*mb, 10*mb),
"UsageBytes": bounded(10*kb, 5*mb),
"WorkingSetBytes": bounded(10*kb, mb),
"WorkingSetBytes": bounded(10*kb, 2*mb),
"RSSBytes": bounded(1*kb, mb),
"PageFaults": bounded(100, 100000),
"MajorPageFaults": bounded(0, 10),
@ -194,7 +201,14 @@ var _ = framework.KubeDescribe("Summary API", func() {
"AvailableBytes": bounded(100*mb, 100*gb),
"UsageBytes": bounded(10*mb, 10*gb),
"WorkingSetBytes": bounded(10*mb, 10*gb),
"RSSBytes": bounded(1*kb, 1*gb),
// today, this returns the value reported
// in /sys/fs/cgroup/memory.stat for rss
// this value should really return /sys/fs/cgroup/memory.stat total_rss
// as we really want the hierarchical value not the usage local to / cgroup.
// for now, i am updating the bounding box to the value as coded, but the
// value reported needs to change.
// rss only makes sense if you are leaf cgroup
"RSSBytes": bounded(0, 1*gb),
"PageFaults": bounded(1000, 1E9),
"MajorPageFaults": bounded(0, 100000),
}),
@ -210,7 +224,8 @@ var _ = framework.KubeDescribe("Summary API", func() {
"Time": recent(maxStatsAge),
"AvailableBytes": fsCapacityBounds,
"CapacityBytes": fsCapacityBounds,
"UsedBytes": bounded(kb, 10*gb),
// we assume we are not running tests on machines < 10tb of disk
"UsedBytes": bounded(kb, 10*tb),
"InodesFree": bounded(1E4, 1E8),
"Inodes": bounded(1E4, 1E8),
"InodesUsed": bounded(0, 1E8),
@ -220,7 +235,8 @@ var _ = framework.KubeDescribe("Summary API", func() {
"Time": recent(maxStatsAge),
"AvailableBytes": fsCapacityBounds,
"CapacityBytes": fsCapacityBounds,
"UsedBytes": bounded(kb, 10*gb),
// we assume we are not running tests on machines < 10tb of disk
"UsedBytes": bounded(kb, 10*tb),
"InodesFree": bounded(1E4, 1E8),
"Inodes": bounded(1E4, 1E8),
"InodesUsed": bounded(0, 1E8),