15-Practice-Test-DaemonSets.md

Practice Test - DaemonSets

• Take me to Practice Test

Solutions to practice test daemonsets

• Run the command kubectl get daemonsets --all-namespaces

  $ kubectl get daemonsets --all-namespaces
  

• Run the command kubectl get daemonsets --all-namespaces

  $ kubectl get daemonsets --all-namespaces
  

• Run the command kubectl get all --all-namespaces and identify the types

  $ kubectl get all --all-namespaces
  

• Run the command kubectl describe daemonset kube-proxy --namespace=kube-system

  $ kubectl describe daemonset kube-proxy --namespace=kube-system
  

• Run the command kubectl describe daemonset kube-flannel-ds-amd64 --namespace=kube-system

  $ kubectl describe daemonset kube-flannel-ds-amd64 --namespace=kube-system
  

• Create a daemonset

  $ vi ds.yaml
  

  apiVersion: apps/v1
  kind: DaemonSet
  metadata:
    name: elasticsearch
    namespace: kube-system
    labels:
      k8s-app: fluentd-logging
  spec:
    selector:
      matchLabels:
        name: elasticsearch
    template:
      metadata:
        labels:
          name: elasticsearch
      spec:
        tolerations:
        # this toleration is to have the daemonset runnable on master nodes
        # remove it if your masters can't run pods
        - key: node-role.kubernetes.io/master
          effect: NoSchedule
        containers:
        - name: elasticsearch
          image: k8s.gcr.io/fluentd-elasticsearch:1.20
  

• To create the daemonset and list the daemonsets and pods

  $ kubectl create -f ds.yaml
  $ kubectl get ds -n kube-system
  $ kubectl get pod -n kube-system|grep elasticsearch