k8s Pods

PODs
- smallest object in k8s, contains containers, can contain one or more containers
- scale service by creating more pod instances.
- additional container could be helper container.
- network space is shared between containers in the same pod, they can communicate on localhost.
Static Pods
- On standalone VM, the kubelet can be configured to
  - read pod definitions from
    1. (Option:--pod-manifest-path=/etc/kubernetes/manifests).
      - ps ax | grep kubeconfig
    2. kubeconfig.yaml staticPodPath: /etc/kubernetes/manifest.
  - It also assures they stay alive.
  - Only POD's , nothing else.
  - view with docker ps
  - the kubeadm k8s setup uses static pods to run the k8s management software as pods on nodes.
- Static Pods and DaemonSets are ignored by the Kube-Scheduler

Pod, eq in Docker ENTRYPOINT->command & CMD->args

apiVersion: v1
kind: Pod
metadata:
  name: ubuntu-sleeper-pod
spec:
  containers:
    - name: ubuntu-sleeper
      image: ubuntu-sleeper
      command: ["sleep2.0"]
      args: ["10",]

}}}