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KodeCloud CKA Daemon Sets

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Daemon Sets

  • Daemon sets are like replica sets in the sense that it helps us run multiple instances of a pod but it runs one copy of pod on each node of our cluster.
    • Whenever a new node is added to our cluster a replica of the pod is added to that node and when the node is removed the pod is removed.
Daemon set ensures that one copy of the pod is always present in all nodes in the cluster.

It does this using the Node Affinity rules and the default scheduler.

  • Example of daemon sets: Monitoring solution or log viewer

    • attachments/Pasted image 20221010224414.jpg
  • kube-proxy is a good use case of daemon sets.

  • Manifest file for a daemon set is exactly like the replica set except for kind.

  • Get all the daemonsets: k get daemonsets

Last updated: 2022-10-10