OpenShift Node is overloaded and/or using all of its memory when pods are scheduled.

Solution Unverified - Updated 2019-10-30T05:42:53+00:00 -

English

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Environment

• OpenShift Enterprise Container Platform

Issue

• OpenShift node is invoking oom-killer
• OpenShift node is under high cpu load
• A pod is scheduled to the node and uses all of the nodes resources, crashing the node.
• FailedScheduling due to X Insufficient memory or X Insufficient cpu

Resolution

• Most likely pods are getting scheduled to the nodes running with out any limits. See the following links below for more information:

Walk through on OpenShift resource management

• Capacity management monitoring
• Protecting nodes system resources

Documentation on resource configuration

• Allocating node resources
• Out of resource handling
• Overcommitting Node

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