koordlet: add metrics for batch resources

[saintube]

Signed-off-by: saintube saintube@foxmail.com

Ⅰ. Describe what this PR does

Add Prometheus metrics for node's and pod's batch resources, including metrics below:

# node-level batch resources
koordlet_node_resource_allocatable{resource="kubernetes.io/batch-cpu|kubernetes.io/batch-memory", node=}
# container-level batch resources (aggregatable to pod-level)
koordlet_container_resource_request{resource="kubernetes.io/batch-cpu|kubernetes.io/batch-memory", node=, pod=, namespace=, container=}
koordlet_container_resource_limit{resource="kubernetes.io/batch-cpu|kubernetes.io/batch-memory", node=, pod=, namespace=, container=}

Fix some spelling errors.

Fix metrics koordlet_node_used_cpu_cores and koordlet_be_suppress_ls_used_cpu_cores, and use cores instead of milli-cores as the unit.

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[LeoLiuYan]

Very cool ! Finally, we have the BE-pods metrics. @saintube

[codecov]

Codecov Report

Base: 66.56% // Head: 66.64% // Increases project coverage by +0.08% 🎉

Coverage data is based on head (817962a) compared to base (3c6b1b8).
Patch coverage: 75.42% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #913      +/-   ##
==========================================
+ Coverage   66.56%   66.64%   +0.08%     
==========================================
  Files         240      241       +1     
  Lines       27754    27858     +104     
==========================================
+ Hits        18474    18567      +93     
- Misses       8009     8015       +6     
- Partials     1271     1276       +5     

Flag	Coverage Δ
unittests	66.64% <75.42%> (+0.08%)	⬆️

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

Impacted Files	Coverage Δ
pkg/koordlet/metrics/common.go	67.85% <ø> (ø)
pkg/koordlet/metricsadvisor/collector.go	43.79% <0.00%> (ø)
pkg/koordlet/resmanager/resmanager.go	55.90% <0.00%> (ø)
pkg/koordlet/statesinformer/states_node.go	55.14% <73.91%> (+4.55%)	⬆️
pkg/koordlet/metrics/resource_summary.go	74.28% <74.28%> (ø)
pkg/koordlet/statesinformer/states_pods.go	62.05% <91.30%> (+10.39%)	⬆️
pkg/koordlet/metrics/metrics.go	88.88% <100.00%> (+0.42%)	⬆️
pkg/koordlet/resmanager/cpu_suppress.go	68.88% <100.00%> (ø)
pkg/util/resource.go	48.57% <100.00%> (+3.11%)	⬆️
pkg/util/httputil/reverseproxy.go	85.10% <0.00%> (+0.79%)	⬆️
... and 2 more

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[zwzhang0107]

/lgtm

[jasonliu747]

🤏

[saintube]

/cc @jasonliu747 @zwzhang0107 @FillZpp

[jasonliu747]

/lgtm

[zwzhang0107]

/approve

[jasonliu747]

/lgtm

[FillZpp]

/lgtm

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: FillZpp, zwzhang0107

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

The pull request process is described here

Needs approval from an approver in each of these files:

• pkg/koordlet/OWNERS [zwzhang0107]
• pkg/util/OWNERS [FillZpp]

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[saintube]

link kubernetes/kube-state-metrics#1939