DaemonSet¶

https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/

确保所有或者部分Kubernetes集群节点上运行一个pod。当有新节点加入时，pod也会运行在上面。

常见例子：

kube-proxy 网络相关
log collectors
metric servers
Resource monitoring agent
storage daemons

语法¶

apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: hello-ds
spec:
  selector:
    matchLabels:
      app: hello-world
  template:
    metadata:
      labels:
        app: hello-world
    spec:
      containers:
      - name: hello-world
        image: nginx:1.14

可以指定Node，通过 nodeSelector

apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: hello-ds
spec:
  selector:
    matchLabels:
      app: hello-world
  template:
    metadata:
      labels:
        app: hello-world
    spec:
      nodeSelector:
        node: hello-world
      containers:
      - name: hello-world
        image: nginx:1.14

Update Strategy¶

RollingUpdate
OnDelete