[ISSUE #201] Fix (OOM) errors in Broker's pods when thet startup by accurately adhering to their allocated memory, rather than relying on the host's total memory. #210
This update prevents Out-Of-Memory (OOM) errors in Broker's pods when they startup by accurately adhering to their allocated memory, rather than relying on the host's total memory.
For Fix [ISSUE #201].
Brief changelog
Resolved an issue in the Kubernetes setup where the 'free' command was used, leading to inaccurate memory allocations in pods.
Modified the system to make resource queries container-aware, specifically targeting memory and CPU resource limits.
Implemented changes to access cgroup data directly, ensuring precise readings of container-specific limits.
This update prevents Out-Of-Memory (OOM) errors in pods by accurately adhering to their allocated memory, rather than relying on the host's total memory.
Adjusted the startup scripts in apache-rocketmq-operator/images/broker/alpine/runbroker-customize.sh to reflect these improvements.
The changes contribute to the overall stability and efficiency of the Kubernetes environment, particularly in memory management.
Verifying this change
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Please go through this checklist to help us incorporate your contribution quickly and easily.
Notice: It would be helpful if you could finish the following checklist (the last one is not necessary) before request the community to review your PR.
[x] Make sure there is a Github issue filed for the change (usually before you start working on it). Trivial changes like typos do not require a Github issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue.
[x] Format the pull request title like [ISSUE #123] Fix UnknownException when host config not exist. Each commit in the pull request should have a meaningful subject line and body.
[x] Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
[ ] Check RBAC rights for Kubernetes roles.
[ ] Write necessary unit-test to verify your logic correction, more mock a little better when cross module dependency exist.
[ ] Run make docker-build to build docker image for operator, try your changes from Pod inside your Kubernetes cluster, not just locally. Also provide screenshots to show that the RocketMQ cluster is healthy after the changes.
[ ] Before committing your changes, remember to run make manifests to make sure the CRD files are updated.
MrLYG
commented
5 months ago
What is the purpose of the change
This update prevents Out-Of-Memory (OOM) errors in Broker's pods when they startup by accurately adhering to their allocated memory, rather than relying on the host's total memory. For Fix [ISSUE #201].
Brief changelog
apache-rocketmq-operator/images/broker/alpine/runbroker-customize.shto reflect these improvements.Verifying this change
XXXX
Please go through this checklist to help us incorporate your contribution quickly and easily.
Notice:
It would be helpful if you could finish the following checklist (the last one is not necessary) before request the community to review your PR.[ISSUE #123] Fix UnknownException when host config not exist. Each commit in the pull request should have a meaningful subject line and body.make docker-buildto build docker image for operator, try your changes from Pod inside your Kubernetes cluster, not just locally. Also provide screenshots to show that the RocketMQ cluster is healthy after the changes.make manifeststo make sure the CRD files are updated.