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Bug
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Resolution: Done
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Major
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4.12
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Quality / Stability / Reliability
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False
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3
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Important
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None
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None
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None
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Rejected
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None
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None
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Release Note Not Required
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N/A
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None
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None
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None
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None
Description of problem:
Several items on [1] about JDK are outdated and will lead to the wrong understanding of JDK on OCP. I would suggest re-writing the Understanding OpenJDK settings for OpenShift Container Platform section. [1] https://docs.openshift.com/container-platform/4.12/nodes/clusters/nodes-cluster-resource-configure.html#nodes-cluster-resource-configure-jdk-heap_nodes-cluster-resource-configure Should mention -XX:MaxRamPercentage instead. Also -XX:+UseCGroupMemoryLimitForHeap is no longer anything needed to be set. Also mentions UseContainerSupport outdated since 8u191. The solution https://access.redhat.com/solutions/4564491 explains several of those details, including the container awareness. And https://access.redhat.com/solutions/4886081 as well Given the JVM is container aware, directly override one of -XX:MaxRAM, -XX:MaxHeapSize or -Xmx, is not recommended.
Version-Release number of selected component (if applicable):
4.12 Documentation
How reproducible:
Documentation
Steps to Reproduce:
1. Read the OCP node docs, they are outdated
Actual results:
https://access.redhat.com/solutions/4564491 https://access.redhat.com/solutions/4886081
Expected results:
Additional info:
https://access.redhat.com/solutions/4564491
- links to
(2 links to)
