CRI runtimes do not supply cpu nano core usage as it is not part of CRI
stats. However, there are upstream components that still rely on such
stats to function. The previous fix was faulty because the multiple
callers could compete and update the stats, causing
inconsistent/incoherent metrics. This change, instead, creates a
separate call for updating the usage, and rely on eviction manager,
which runs periodically, to trigger the updates. The caveat is that if
eviction manager is completley turned off, no one would compute the
usage.
**What type of PR is this?**
/kind cleanup
**What this PR does / why we need it**:
Fix typos for stats_provider_test.go
**Which issue(s) this PR fixes** *(optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged)*:
**Special notes for your reviewer**:
**Release note**:
```
NONE
```
- Move from the old github.com/golang/glog to k8s.io/klog
- klog as explicit InitFlags() so we add them as necessary
- we update the other repositories that we vendor that made a similar
change from glog to klog
* github.com/kubernetes/repo-infra
* k8s.io/gengo/
* k8s.io/kube-openapi/
* github.com/google/cadvisor
- Entirely remove all references to glog
- Fix some tests by explicit InitFlags in their init() methods
Change-Id: I92db545ff36fcec83afe98f550c9e630098b3135
The slice of strings more precisely captures the hierarchic nature of
the cgroup paths we use to represent pods and their groupings.
It also ensures we're reducing the chances of passing an incorrect path
format to a cgroup driver that requires a different path naming, since
now explicit conversions are always needed.
The new constructor NewCgroupName starts from an existing CgroupName,
which enforces a hierarchy where a root is always needed. It also
performs checking on the component names to ensure invalid characters
("/" and "_") are not in use.
A RootCgroupName for the top of the cgroup hierarchy tree is introduced.
This refactor results in a net reduction of around 30 lines of code,
mainly with the demise of ConvertCgroupNameToSystemd which had fairly
complicated logic in it and was doing just too many things.
There's a small TODO in a helper updateSystemdCgroupInfo that was
introduced to make this commit possible. That logic really belongs in
libcontainer, I'm planning to send a PR there to include it there.
(The API already takes a field with that information, only that field is
only processed in cgroupfs and not systemd driver, we should fix that.)
Tested by running the e2e-node tests on both Ubuntu 16.04 (with cgroupfs
driver) and CentOS 7 (with systemd driver.)
With CRI, kubelet no longer sets up networking for the pods. The
dockershim package is the rightful owner and the only user of the
newtork package. This change moves the package into dockershim to make
the distinction obvious, and untangles the codebase.
The`network/dns`is kept in the original package since it is only used by
kubelet.
Automatic merge from submit-queue (batch tested with PRs 62192, 61866, 62206, 62360). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Make the test TestCRIListPodStats pass for Darwin and Windows
GetPodCgroupNameSuffix is only implemented for Linux, which mean
that CPU and Memory stats are only available on Linux.
My fix to make the test pass on other OS:es than Linux
is to just check CPU and Memory stats on Linux.
(This is similar to #57637 which fixed the same problem for the
test TestCadvisorListPodStats.)
**What this PR does / why we need it**:
To make all unit tests pass on macOS/Darwin
**Which issue(s) this PR fixes**:
Fixes#62177
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
GetPodCgroupNameSuffix is only implemented for Linux, which mean
that CPU and Memory stats are only available on Linux.
My fix to make the test pass on other OS:es than Linux
is to just check CPU and Memory stats on Linux.
(This is similar to #57637 which fixed the same problem for the
test TestCadvisorListPodStats.)
Automatic merge from submit-queue (batch tested with PRs 54191, 59374, 59824, 55032, 59906). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Adding per container stats for CRI runtimes
**What this PR does / why we need it**
This commit aims to collect per container log stats. The change was proposed as a part of #55905. The change includes change the log path from /var/pod/<pod uid>/containername_attempt.log to /var/pod/<pod uid>/containername/containername_attempt.log. The logs are collected by reusing volume package to collect metrics from the log path.
Fixes#55905
**Special notes for your reviewer:**
cc @Random-Liu
**Release note:**
```
Adding container log stats for CRI runtimes.
```
This commit aims to collect per container log stats. The
change was proposed as a part of #55905. The change includes
change of the log path from /var/pod/<pod uid>/containername_attempt.log
to /var/pod/<pod uid>/containername/containername_attempt.log.
The logs are collected by reusing volume package to collect
metrics from the log path.
Signed-off-by: abhi <abhi@docker.com>
Automatic merge from submit-queue (batch tested with PRs 57136, 59920). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Updated PID pressure node condition.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
part of #54313
**Release note**:
```release-note
Updated PID pressure node condition
```
This also incorporates the version string into the package name so
that incompatibile versions will fail to connect.
Arbitrary choices:
- The proto3 package name is runtime.v1alpha2. The proto compiler
normally translates this to a go package of "runtime_v1alpha2", but
I renamed it to "v1alpha2" for consistency with existing packages.
- kubelet/apis/cri is used as "internalapi". I left it alone and put the
public "runtimeapi" in kubelet/apis/cri/runtime.
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Enable on-demand collection of node metrics
**What this PR does / why we need it**:
This PR enables collecting node-level metrics on-demand. This is useful because it allows the kubelet to respond to resource pressure more quickly.
**Which issue(s) this PR fixes**:
Ref: #51745
**Release note**:
```release-note
NONE
```
/sig node
/priority important-soon
/kind bug
/assign @vishh @derekwaynecarr
cc @tallclair
Ben Moss