Skip to content

Latest commit

 

History

History
19 lines (19 loc) · 1.35 KB

File metadata and controls

19 lines (19 loc) · 1.35 KB

static pods

  • all the pod definitions are stored in a directory(could be any directory) eg- /etc/kubernetes/manifests
    • [[kubelet]] periodically checks with directory for any changes or additions
    • path of the directory is set in [[kubelet]] agent systemd service file as a parameter either as a config file or the path directly
      • --config=/etc/kubernetes/kubeconfig.yaml
        • staticPodPath: /etc/kubernetes/manifests
      • --pod-manifest-path=/etc/kubernetes/manifests
  • only pods can be created this way. [[replicaset]], [[services]] or [[deployment]] are not supported
    • this is because [[kubelet]] works at pod level and can only understand [[pods]]
  • to check the container status we'll have to utilize container engine's cli tool
    • eg- docker ps -a
  • http apis can be used to schedule pods
  • [[kube api server]] only have read only access to the pods in the pod
    • [[kubelet]] automatically tries to create a mirror Pod on the [[kube api server]] for each static Pod.
    • this means that the Pods running on a node are visible on the API server, but cannot be controlled from there.
    • the Pod names will be suffixed with the node hostname with a leading hyphen.
  • [[kubeadm]] uses static pods to set up a cluster
  • unlike [[daemonset]] static pods are controlled by kubelet not [[kube api server]]
    • both are ignored by [[scheduler]]