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Answered
Simmon
Asked: 2022-08-20T09:42:56+00:00

how to reschedule failed/error pods in kubernetes

I have kubernetes cluster with autoscale enabled and I am deploying pods dynamically when needed (not stateful), some pods are failing because node is running out of memory (expected). When it happens pod enters status: Failed, reason: Evicted, Message: node was low on resource even when new nodes can be spawned.

Is there is way to reschedule/retry this pod on different/new node automatically ? if not, how can I re-deploy same pod without changing any config of it ?

kubernetes
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  1. Best Answer

    Pods by itself doesn’t migrate to another node.

    You can use workload resources to create and manage multiple Pods for you. A controller for the resource handles replication and rollout and automatic healing in case of Pod failure. For example, if a Node fails, a controller notices that Pods on that Node have stopped working and creates a replacement Pod. The scheduler places the replacement Pod onto a healthy Node.

    Some examples of controllers are:

    Check this link to more information.

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