The Basics: Kubernetes, Mesosphere, and Docker Swarm

Re:The Basics: Kubernetes, Mesosphere, and Docker Swarm by webo on Thursday February 16, 2017 @12:48AM (#13657986)

You may have misunderstood me. The case I'm talking is, the node reports Ready, but the pod itself is not functioning properly.

One common issue we have is the pod gets stuck in a restart loop (for whatever reason, including starvation of resources). k8s just keeps restarting it for days on that node, instead of simply rescheduling it after X restarts or some other condition.

https://github.com/kubernetes/kubernetes/issues/13385

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Re:The Basics: Kubernetes, Mesosphere, and Docker Swarm by shaklee3 on Thursday February 16, 2017 @01:00AM (#13658038)

Isn't that what custom liveliness probes are for?

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Re:The Basics: Kubernetes, Mesosphere, and Docker Swarm by webo on Thursday February 16, 2017 @01:12AM (#13658077)

No- liveness probe just restarts the pod if the check fails, doesn't kill it.

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Re:The Basics: Kubernetes, Mesosphere, and Docker Swarm by amouat on Thursday February 16, 2017 @05:34AM (#13658899)

I think a failed liveness will restart the container, not the whole pod.

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Re:The Basics: Kubernetes, Mesosphere, and Docker Swarm by webo on Thursday February 16, 2017 @10:49AM (#13660824)

You're right. We always have one container per pod so I didn't fully think about this.

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Re:The Basics: Kubernetes, Mesosphere, and Docker Swarm by shaklee3 on Saturday February 18, 2017 @11:42AM (#13675393)

Isn't that because the pod's restart policy is set to restart? What if you set that to off? Does it fail the whole pod?

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