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Optimizing the processing flow of HandlePodAdditions and canAdmitPod …
Optimizing the processing flow of HandlePodAdditions and canAdmitPod methods. If the following loop body in canAdmitPod method is removed, the detection speed can be improved, and the change is very small.
------
otherPods := []*api.Pod{}
for _, p := range pods {
if p != pod {
otherPods = append(otherPods, p)
}
}
------
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Inspect the nodeInfo first for CheckServiceAffinity in predicates.go
Suggest to inspect the nodeInfo first for CheckServiceAffinity in predicates.go. When nodeInfo.Node() is nil, return quickly.
Signed-off-by: Kevin Wang <wang.kanghua@zte.com.cn>
change the note for the canAdmitPod method.
Signed-off-by: Kevin Wang <wang.kanghua@zte.com.cn>
gofmt kubelet.go
Signed-off-by: Kevin Wang <wang.kanghua@zte.com.cn>
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[WIP/RFC] Rescheduling in Kubernetes design proposal
Proposal by @bgrant0607 and @davidopp (and inspired by years of discussion and experience from folks who worked on Borg and Omega).
This doc is a proposal for a set of inter-related concepts related to "rescheduling" -- that is, "moving" an already-running pod to a new node in order to improve where it is running. (Specific concepts discussed are priority, preemption, disruption budget, quota, `/evict` subresource, and rescheduler.)
Feedback on the proposal is very welcome. For now, please stick to comments about the design, not spelling, punctuation, grammar, broken links, etc., so we can keep the doc uncluttered enough to make it easy for folks to comment on the more important things.
ref/ #22054#18724#19080#12611#20699#17393#12140#22212
@HaiyangDING @mqliang @derekwaynecarr @kubernetes/sig-scheduling @kubernetes/huawei @timothysc @mml @dchen1107
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Add meta field to predicate signature to avoid computing the same things multiple times
This PR only uses it to avoid computing QOS of a pod for every node from scratch.
Ref #28590
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RemoveContainer in Runtime interface
- Added a DeleteContainer method in Runtime interface
- Implemented DeleteContainer for docker
#28552
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Fixes bad heuristic when calling "tc show" to check interface
`tc` sometimes returns stuff that has more than 12 words in its response. The heuristic is bad, but this at least fixes the case when `tc` is returning too much.
Fixes#28571.
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Add checks in Create and Update Cgroup methods
This PR is connected to upstream issue for adding pod level cgroups in Kubernetes: #27204
Libcontainer currently doesen't support updates to parent devices cgroups. Until we get libcontainer to support skipping devices cgroup we will have that logic on the kubelet side.
This PR includes:
1. Skip the devices cgroup when updating a cgroup. We only update the memory and cpu subsytems.
2. We explicitly pass all the cgroup paths that don't already exist to Apply()
3. Adds an AlreadyExists() method which is a utility function to check if all the subsystems of a cgroup already exist.
On cgroupManager.Update() we only call Set() and cgroupManager.Create() we only call Apply() method
@vishh PTAL
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Extract kubelet network code into its own file
Continuing the effort to begin modularizing the kubelet, this PR extracts the networking code into its own file.
@kubernetes/sig-node cc @kubernetes/sig-network
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allow lock acquisition injection for quota admission
Allows for custom lock acquisition when composing the quota admission controller.
@derekwaynecarr I'm still experimenting to make sure this satisfies the need downstream, but looking for agreement in principle
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Include petsets in kubectl valid commands
Petsets are already implemented in kubectl, but there were no hints
for that subcommand.
Fixes#25615
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Allow specifying base location for test etcd data
Allows controlling where etcd test data goes. Needed in some environments (like AWS/EBS) to allow putting etcd data on a higher performing volume than /tmp
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Update coreos node e2e image to a version that uses cgroupfs
Temporary fix for #28192. This PR updates coreos node e2e image to a version that uses cgroupfs.
cc @vishh @yifan-gu
Search and replace for references to moved examples
Reverted find and replace paths on auto gen docs
Reverting changes to changelog
Fix bugs in test-cmd.sh
Fixed path in examples README
ran update-all successfully
Updated verify-flags exceptions to include renamed files
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Fixes#28205, Check release tar location for Openstack-Heat provider
This does a basic check to see where the release tars are located.
Allows people to use openstack-heat outside of compiling k8s.
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Move KUBE_GIT_UPSTREAM out of init.sh and into *-munge-docs.sh.
It is only used in those 2 scripts and this way we can set the value dynamically.
Clean up a bit too (80col, formatting)
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Revert "Mount r/w GCE PD disks with -o discard"
Reverts kubernetes/kubernetes#28448
We need to make sure that we check for compatibility with the discard flag before mounting with it.
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Enable memory eviction by default
```release-note
Enable memory based pod evictions by default on the kubelet.
Trigger pod eviction when available memory falls below 100Mi.
```
See: https://github.com/kubernetes/kubernetes/issues/28552
/cc @kubernetes/rh-cluster-infra @kubernetes/sig-node
