The default is Always. kubernetes kubernetes-statefulset kubernetes-pvc. You can then wait until the next pod has reached a state where it is synced with the other ones (in whatever way your software does it), then delete the next one etc., until you have upgraded them all.Thanks for contributing an answer to DevOps Stack Exchange! @dmkvl Container start-up shell need to read that file to config something, I have to restart pod.
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I mean are you sure this is the only way you can achieve your aim?By the way, you could get the current definition of a StatefulSet, change some field (eg. Hence, they require you to do this on your own. kubectl rollout restart statefulset my-statefulset. Detailed answers to any questions you might have Stack Exchange network consists of 177 Q&A communities including @dmkvl I don't think annotations will trigger an update, but labels will. See openshift/origin#17435 (comment) I've traced this to a recent change adding collision avoidance which made newRevision not re-entrant anymore and uncovered bug where statefulset controller doesn't wait on syncing revision informer. A claim in this list takes precedence over any … your coworkers to find and share information. The stateful services, on the other hand, will have to worry about lots and lots of edge-cases and weird issues. By using our site, you acknowledge that you have read and understand our DevOps Stack Exchange is a question and answer site for software engineers working on automated testing, continuous delivery, service integration and monitoring, and building SDLC infrastructure. By clicking “Post Your Answer”, you agree to our To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Client Version: v1.16.1. N.B. The default is Always. Private self-hosted questions and answers for your enterpriseProgramming and related technical career opportunitiesWhat is the purpose of restarting StatefulSet? If something goes wrong, you can just restart the application and it will go back to the initial state with little downtime. The possible values are: Always - Tries restarting a successfully exited container on the pod continuously, with an exponential back-off delay (10s, 20s, 40s) until the pod is restarted. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under Stack Overflow works best with JavaScript enabled When you create StatefulSet and restart statefulset controller, while it's starting it will create multiple controllerrevisions. Server Version: v1.14.10-gke.42. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under Thanks for contributing an answer to Stack Overflow! Start here for a quick overview of the site The possible values are: Always - Tries restarting a successfully exited container on the pod continuously, with an exponential back-off delay (10s, 20s, 40s) until the pod is restarted. By using our site, you acknowledge that you have read and understand our Free 30 Day Trial This article demonstrates how to restart … I am using GKE. The Overflow Blog By clicking “Post Your Answer”, you agree to our To subscribe to this RSS feed, copy and paste this URL into your RSS reader. So, if OpenShift would do an upgrade for you, due to an edit, it would need to decide how to do that (spawn up new pods parallel to the old one would require spinning up PVCs which may wreak havoc with your quota; replacing them in-place could wreak havoc if your pods need to talk to each other to synchronize). Featured on Meta Kubernetes (k8s) is an open-source container-orchestration system for automating deployment, scaling and management of containerized applications. Anybody can answer
So it turns out the only way to edit the statefulset, and this is by design, is to delete it and recreate it with the new values.Doing that does not delete or stop the pods or the the PVCs - those will re-attach to the new statefulset spun up later, so you won't lose anything. Anybody can ask a question A pod restart policy determines how OpenShift Online responds when containers in that pod exit. : you can delete the pods, and the PVCs will still stick around. The StatefulSet controller is responsible for mapping network identities to claims in a way that maintains the identity of a pod. Learn more about hiring developers or posting ads with us Stateful services and the CAP theorem. It only takes a minute to sign up.What's the best way to change a statefulset (e.g., modify the ENV parameters, modify PVCs) in OpenShift?
But I am not sure if this will create Pods with fresh volume or if there is an easy way to ensure that it transfers the old data of 300GB to the volume of 3TB. When the pods belonging to this statefulset restart later, they will re-attach to the PVCs.There is a discussion on one of the OpenShift/Kubernetes task trackers (which I cannot find anymore) that explains the rationale: in contrast with stateless Deployments, where OpenShift can simply scale up a new set of pods, then scale down the old one, while routing traffic to the new one, this is not easily possible with statefulsets, since those have persistent PVCs, so there usually is a very defined number of pods that can/should run at a time.
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