Restart pods when configmap updates in Kubernetes?

by

The current best solution to this problem (referenced deep in https://github.com/kubernetes/kubernetes/issues/22368 linked in the sibling answer) is to use Deployments, and consider your ConfigMaps to be immutable.

When you want to change your config, create a new ConfigMap with the changes you want to make, and point your deployment at the new ConfigMap. If the new config is broken, the Deployment will refuse to scale down your working ReplicaSet. If the new config works, then your old ReplicaSet will be scaled to 0 replicas and deleted, and new pods will be started with the new config.

Not quite as quick as just editing the ConfigMap in place, but much safer.

More Related Contents:

  1. Why container memory usage is doubled in cAdvisor metrics?
  2. How do I test a ClusterIssuer solver?
  3. pod has unbound PersistentVolumeClaims
  4. What’s the difference between ClusterIP, NodePort and LoadBalancer service types in Kubernetes?
  5. Service located in another namespace
  6. My kubernetes pods keep crashing with “CrashLoopBackOff” but I can’t find any log
  7. How do I access the Kubernetes api from within a pod container?
  8. How to pull environment variables with Helm charts
  9. Expose port in minikube
  10. chown: changing ownership of ‘/data/db’: Operation not permitted
  11. kubectl apply vs kubectl create?
  12. Mount local directory into pod in minikube
  13. Invalid x509 certificate for kubernetes master
  14. Can a PVC be bound to a specific PV?
  15. How can I debug “ImagePullBackOff”?
  16. How to merge kubectl config file with ~/.kube/config?
  17. Kubernetes Cross Namespace Ingress Network
  18. Adding insecure registry in containerd
  19. Namespace “stuck” as Terminating, How I removed it
  20. no matches for kind “Deployment” in version “extensions/v1beta1”
  21. how to pass environment variable in kubectl deployment?
  22. What is the difference between a pod and a deployment?
  23. Restart container within pod
  24. How to get Kubernetes cluster name from K8s API
  25. Ingress configuration for k8s in different namespaces
  26. How do I set ulimit for containers in Kubernetes?
  27. Is there a way to add arbitrary records to kube-dns?
  28. Kubernetes: Routing non HTTP Request via Ingress to Container
  29. How to Enable KubeAPI server for HPA Autoscaling Metrics
  30. How to know a Pod’s own IP address from inside a container in the Pod?

Leave a Comment