search filter out not ready cluster

[yanfeng1992]

Signed-off-by: huangyanfeng huangyanfeng1992@gmail.com

What type of PR is this?
/kind bug

What this PR does / why we need it:

I have three cluster member1, member2, member3，member1 status is not ready

I did a few steps

step1 create a resourceregistries for all cluster

step 2 kubectl get --raw /apis/search.karmada.io/v1alpha1/search/cache/api/v1/nodes --kubeconfig /etc/karmada/karmada-apiserver.config, but get nothing

error log in karmada-search

I think the not ready cluster should be filtered out

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

karmada-search: filter out not ready clusters

[codecov-commenter]

Codecov Report

Merging #3010 (dd5232c) into master (434b7b6) will decrease coverage by 0.03%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #3010      +/-   ##
==========================================
- Coverage   38.66%   38.62%   -0.04%     
==========================================
  Files         206      206              
  Lines       18815    18818       +3     
==========================================
- Hits         7274     7269       -5     
- Misses      11114    11120       +6     
- Partials      427      429       +2     

Flag	Coverage Δ
unittests	38.62% <0.00%> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/search/proxy/controller.go	83.97% <0.00%> (-1.65%)	⬇️
...kg/scheduler/framework/runtime/metrics_recorder.go	82.85% <0.00%> (-5.72%)	⬇️
pkg/util/worker.go	66.66% <0.00%> (-4.77%)	⬇️

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[XiShanYongYe-Chang]

/cc @ikaven1024 @liys87x

[ikaven1024]

Thanks @yanfeng1992 , it's LGTM.

While I found a serious problems: Because cluster ready status is updated periodically, before control panel detects a member cluster down, search component will still request to the down cluster and get an error.

[yanfeng1992]

Thanks @yanfeng1992 , it's LGTM.

While I found a serious problems: Because cluster ready status is updated periodically, before control panel detects a member cluster down, search component will still request to the down cluster and get an error.

ok, i squash the commits into one @ikaven1024

[XiShanYongYe-Chang]

While I found a serious problems: Because cluster ready status is updated periodically, before control panel detects a member cluster down, search component will still request to the down cluster and get an error.

One thing I don't understand is why getting the cache of other clusters fails when one cluster fails.

[ikaven1024]

While I found a serious problems: Because cluster ready status is updated periodically, before control panel detects a member cluster down, search component will still request to the down cluster and get an error.

One thing I don't understand is why getting the cache of other clusters fails when one cluster fails.

When client list pods with resourceVersion=, proxy will traverse all the member clusters, fail to connect the down cluster and return error.

karmada/pkg/search/proxy/store/multi_cluster_cache.go

Lines 227 to 231 in 7e24783

	for clusterIdx, cluster := range clusters {
	n, cont, err := listFunc(cluster)
	if err != nil {
	return nil, err
	}

[yanfeng1992]

Is there anything else I need to modify in this PR? @XiShanYongYe-Chang

[XiShanYongYe-Chang]

Is there anything else I need to modify in this PR? @XiShanYongYe-Chang

I thinks it's okay,
Ask @ikaven1024 and @liys87x to confirm again.

[ikaven1024]

/lgtm

[XiShanYongYe-Chang]

Hi @yanfeng1992, can you help update the release note to:

karmada-search: filter out not ready clusters

We may need to cherry-pick this patch to the previous release v1.2-v1.4. Can you help do it?

[yanfeng1992]

Hi @yanfeng1992, can you help update the release note to:

karmada-search: filter out not ready clusters

We may need to cherry-pick this patch to the previous release v1.2-v1.4. Can you help do it?

i have updated @XiShanYongYe-Chang

[XiShanYongYe-Chang]

i have updated @XiShanYongYe-Chang

Thanks~
/approve

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: XiShanYongYe-Chang

The full list of commands accepted by this bot can be found here.

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• pkg/search/OWNERS [XiShanYongYe-Chang]

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[XiShanYongYe-Chang]

Hi @yanfeng1992, can you help cherry-pick this patch to the previous release? You can refer to the https://karmada.io/docs/contributor/cherry-picks/

[yanfeng1992]

Hi @yanfeng1992, can you help cherry-pick this patch to the previous release? You can refer to the https://karmada.io/docs/contributor/cherry-picks/

release1.2 #3018
release1.3 #3019
release1.4 #3016

@XiShanYongYe-Chang

[XiShanYongYe-Chang]

release1.2 #3018 release1.3 #3019 release1.4 #3016

@XiShanYongYe-Chang

Thanks a lot~