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

Solution Unverified - Updated 2019-01-29T16:46:19+00:00 -

English

• No translations currently exist.

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

This solution is part of Red Hat’s fast-track publication program, providing a huge library of solutions that Red Hat engineers have created while supporting our customers. To give you the knowledge you need the instant it becomes available, these articles may be presented in a raw and unedited form.