Cherry-pick #17351 to 7.x: add_process_metadata: container id: Do not cache whole cgroup file for each process#17362
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exekias merged 1 commit intoelastic:7.xfrom Mar 31, 2020
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…r each process (elastic#17351) * Do not cache whole cgroup file for each process. Include kube-proxy cid too. Co-authored-by: Jako Tinkus <jatinkus@microsoft.com> (cherry picked from commit 8a47788)
kaiyan-sheng
approved these changes
Mar 31, 2020
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Cherry-pick of PR #17351 to 7.x branch. Original message:
What does this PR do?
Current solution caches whole content of cgroup file for each process. Let's cache only found container ids.
Also, current solution skips kube-proxy container processes, because cgroup path has suffix /kube-proxy.
Why is it important?
Caching such a pile of useless data has performance impact.
Checklist
CHANGELOG.next.asciidocorCHANGELOG-developer.next.asciidoc.Author's Checklist
How to test this PR locally
Related issues
Relates #15947
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