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glusterfs: improve a few comments
**What this PR does / why we need it**:
This PR fixes a couple of comments in the glusterfs module:
* fixes a typo in a comment
* removes an outdated comment that is not correct (any more)
* updates one comment to refer to upstream gluster documentation instead of downstream red hat product documentation
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Taint node when it under PID pressure.
Signed-off-by: Da K. Ma <madaxa@cn.ibm.com>
**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
If TaintNodesByCondition enabled, taint node when it under PID pressure
```
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Add cblecker to vendor OWNERS
**What this PR does / why we need it**:
Adds myself to vendor OWNERS. I can help approve dep bumps of existing deps, and refer to Tim and new deps for license review.
**Release note**:
```release-note
NONE
```
/assign thockin
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Update bazelbuild/rules_go, kubernetes/repo-infra, and gazelle dependencies
**What this PR does / why we need it**: updates our bazelbuild/rules_go dependency in order to bump everything to go1.9.4. I'm separating this effort into two separate PRs, since updating rules_go requires a large cleanup, removing an attribute from most build rules.
**Release note**:
```release-note
NONE
```
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Remove duplicated definition of ResourceList in Metrics API
**What this PR does / why we need it**:
Remove duplicated definition of ResourceList in Metrics API
**Release note**:
```release-note
NONE
```
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Monitor the /kubepods cgroup for allocatable metrics
**What this PR does / why we need it**:
The current implementation of allocatable memory evictions sums the usage of pods in order to compute the total usage by user processes.
This PR changes this to instead monitor the `/kubepods` cgroup, which contains all pods, and use this value directly. This is more accurate than summing pod usage, as it is measured at a single point in time.
This also collects metrics from this cgroup on-demand.
This PR is a precursor to memcg notifications on the `/kubepods` cgroup.
This removes the dependency the eviction manager has on the container manager, and adds a dependency for the summary collector on the container manager (to get Cgroup Root)
This also changes the way that the allocatable memory eviction signal and threshold are added to make them in-line with the memory eviction signal to address #53902
**Which issue(s) this PR fixes**:
Fixes#55638Fixes#53902
**Special notes for your reviewer**:
I have tested this, and can confirm that it works when CgroupsPerQos is set to false. In this case, it returns node metrics, as it is monitoring the `/` cgroup, rather than the `/kubepods` cgroup (which doesn't exist).
**Release note**:
```release-note
Expose total usage of pods through the "pods" SystemContainer in the Kubelet Summary API
```
cc @sjenning @derekwaynecarr @vishh @kubernetes/sig-node-pr-reviews
Do not refer to downstream Red Hat documentation
in the upstream kubernetes code, if there is upstream
documentation to refer to.
Signed-off-by: Michael Adam <obnox@redhat.com>
This was originally added due to a misunderstanding
of the documentation of Heketi (using a different
convention). Heketi's documentation has meanwhile
been clarified.
Signed-off-by: Michael Adam <obnox@redhat.com>
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Pipe error message from openapi/swaggerspec verify checks to stderr
**What this PR does / why we need it**:
This pipes the error messages from openapi and swagger spec verify jobs to stderr so they show up in junit reports.
**Release note**:
```release-note
NONE
```
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fix invalid match rules for advanced audit policy
When users or groups are set in a rule, this rule should not match
attribute with unauthorized request where user and group are nil.
**Release note**:
```release-note
Unauthorized requests will not match audit policy rules where users or groups are set.
```
Fixes: https://github.com/kubernetes/kubernetes/issues/59331
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Fixing CSI e2e test
Current e2e test had some inconsistencies which were preventing it from running successfully on the local cluster.
```release-note
Making sure CSI E2E test runs on a local cluster
```
Closes#60016
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GCE: Fix SelfLink of cloudprovider mocks
**What this PR does / why we need it**:
Allows the user to pass in a ProjectRouter to the mocked services
**Special notes for your reviewer**:
/assign bowei
/cc agau4779
**Release note**:
```release-note
NONE
```
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Move code only used by gce out of common.sh and into gce/util.sh
xref #49213
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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CSI 0.2.0 breaking changes
Refactor kubernetes CSI bits to support CSI version 0.2.0
```release-note
Addressing breaking changes introduced by new 0.2.0 release of CSI spec
```
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Updated comments to correct flag of taint.
Signed-off-by: Da K. Ma <madaxa@cn.ibm.com>
**Release note**:
```release-note
None
```
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cluster/images/hyperkube: Fix typo in Dockerfile for aggregator symlink
**What this PR does / why we need it**: Fixes typo in the hyperkube Dockerfile for kube-aggregator
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Fix e2e node setKubeletConfiguration helper
The helper should have been using `apiequality.Semantic.DeepEqual`,
instead of `reflect.DeepEqual`. Previously, nil vs empty containers
were treated as not equal, but they should be considered equal for
objects managed by Kubernetes API machinery, like KubeletConfiguration.
This should fix the failing eviction tests.
```release-note
NONE
```
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Enable mount propagation tests by default
MountPropagation is enabled by default now, so should be the test.
**Release note**:
```release-note
NONE
```
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GCE: Create cloud-provider roles and bindings via addons
**What this PR does / why we need it**:
This removes the `cloud-provider` role and role binding from the rbac boostrapper and replaces it with a policy applied via addon mgr. This also creates a new clusterrole allowing the service account to create events for any namespace.
**Special notes for your reviewer**:
/assign @bowei @timstclair
/cc timstclair
**Release note**:
```release-note
GCE: A role and clusterrole will now be provided with GCE/GKE for allowing the cloud-provider to post warning events on all services and watching configmaps in the kube-system namespace.
```
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Move ipvs module loading logic in local-cluster-up.sh
**What this PR does / why we need it**:
This PR makes the module loading logic for ipvs kube-proxy a little more robust. Previously we were attempting to load the modules and not checking that it succeeded. Now we make sure the loading was successful before proceeding with using ipvs as the proxier.
/assign @cblecker
Release Note
```release-note
None
```
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Reevaluate eviction thresholds after reclaim functions
**What this PR does / why we need it**:
When the node comes under `DiskPressure` due to inodes or disk space, the eviction manager runs garbage collection functions to clean up dead containers and unused images.
Currently, we use the strategy of trying to measure the disk space and inodes freed by garbage collection. However, as #46789 and #56573 point out, there are gaps in the implementation that can cause extra evictions even when they are not required. Furthermore, for nodes which frequently cycle through images, it results in a large number of evictions, as running out of inodes always causes an eviction.
This PR changes this strategy to call the garbage collection functions and ignore the results. Then, it triggers another collection of node-level metrics, and sees if the node is still under DiskPressure.
This way, we can simply observe the decrease in disk or inode usage, rather than trying to measure how much is freed.
**Which issue(s) this PR fixes**:
Fixes#46789Fixes#56573
Related PR #56575
**Special notes for your reviewer**:
This will look cleaner after #57802 removes arguments from [makeSignalObservations](https://github.com/kubernetes/kubernetes/pull/57802/files#diff-9e5246d8c78d50ce4ba440f98663f3e9R719).
**Release note**:
```release-note
NONE
```
/sig node
/kind bug
/priority important-soon
cc @kubernetes/sig-node-pr-reviews
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Deprecate kubelet flag for cadvisor port
**Which issue(s) this PR fixes**:
Issue: #56523
TL;DR the Kubelet's `stats/summary` API is the preferred way of monitoring the node. If you need additional metrics from cAdvisor, it can be run as a daemonset.
**Release note**:
```release-note
Deprecate the kubelet's cadvisor port
```
/assign @mtaufen @tallclair
cc @kubernetes/sig-node-pr-reviews
The helper should have been using `apiequality.Semantic.DeepEqual`,
instead of `reflect.DeepEqual`. Previously, nil vs empty containers
were treated as not equal, but they should be considered equal for
objects managed by Kubernetes API machinery, like KubeletConfiguration.
This should fix the failing eviction tests.
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Log the command line flags
**What this PR does / why we need it**:
With d7ddcca231, we lost the logging
of the flags. We should at least log what the command line flags
were used to start processes as those incredibly useful for trouble shooting.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
/assign @deads2k
/assign @liggitt
**Release note**:
```release-note
NONE
```
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Improve comments for kubelet
**What this PR does / why we need it**:
Improve comments and fix typos for kubelet.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Wait for bound pvc metric updated before validating
**What this PR does / why we need it**:
We should wait for both bound pv and pvc metrics updated before validating the metric values(Currently we only wait for bound pv metric updated).
**Release note**:
```release-note
NONE
```
/sig storage
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Collect ephemeral storage capacity on initialization
**What this PR does / why we need it**:
We have had some node e2e flakes where a pod can be rejected if it requests ephemeral storage. This is because we don't set capacity and allocatable for ephemeral storage on initialization.
This PR causes cAdvisor to do one round of stats collection during initialization, which will allow it to get the disk capacity when it first sets the node status.
It also sets the node to NotReady if capacities have not been initialized yet.
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
/assign @jingxu97 @Random-Liu
/sig node
/kind bug
/priority important-soon
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Clean-up not needed method in juju charms
**What this PR does / why we need it**: Improve code quality. Remove code that is not offeringany functionality.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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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
```
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Index PVs by StorageClass in assume cache
**What this PR does / why we need it**:
Performance optimization for delayed binding in the scheduler to only search for PVs with a matching StorageClass name. This means that if you prebind the PV to a PVC, the PV must have a matching StorageClass name. This behavior is different from when you prebind with immediate binding, which doesn't care about StorageClass.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#56102
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Improve the error message.
**What this PR does / why we need it**:
Makes the error message more descriptive and less scary. Previously it
is far from obvious whether connection kill is a symptom or cause of the
problem, see for example https://github.com/kubernetes/kubernetes/issues/55779#issuecomment-353582852
In paricular the crucial missing piece of information is that this is a
way of handling a timeout.
**Release note**:
```release-note
NONE
```
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