（2022版）一套教程搞定k8s安装到实战 | DaemonSet

Posted 2022-08-09 COCOgsta

视频来源：B站《（2022版）最新、最全、最详细的Kubernetes（K8s）教程，从K8s安装到实战一套搞定》

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---

创建一个ds

apiVersion: apps/v1
kind: DaemonSet
metadata:
  labels:
    app: nginx
  name: nginx
spec:
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: nginx
    spec:
      containers:
      - image: nginx:1.15.2
        imagePullPolicy: IfNotPresent
        name: nginx
        resources: 
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: 
      terminationGracePeriodSeconds: 30
复制代码

[root@k8s-master-lb ~]# kubectl create -f nginx-ds.yaml 
daemonset.apps/nginx created
[root@k8s-master-lb ~]# kubectl get pods -o wide
NAME                     READY   STATUS    RESTARTS   AGE   IP               NODE            NOMINATED NODE   READINESS GATES
busybox                  1/1     Running   13         13h   172.17.125.4     k8s-node01      <none>           <none>
nginx-66bbc9fdc5-mbqkf   1/1     Running   0          24h   172.18.195.1     k8s-master03    <none>           <none>
nginx-66bbc9fdc5-x7vkl   1/1     Running   0          24h   172.17.125.3     k8s-node01      <none>           <none>
nginx-dngrb              1/1     Running   0          20s   172.25.92.68     k8s-master02    <none>           <none>
nginx-fm6tf              1/1     Running   0          20s   172.16.203.196   k8s-master-lb   <none>           <none>
nginx-fn9nn              1/1     Running   0          20s   172.18.195.2     k8s-master03    <none>           <none>
nginx-jwhxh              1/1     Running   0          20s   172.27.14.196    k8s-node02      <none>           <none>
nginx-t6fhw              1/1     Running   0          20s   172.17.125.5     k8s-node01      <none>           <none>
web-0                    1/1     Running   0          14h   172.27.14.195    k8s-node02      <none>           <none>
web-1                    1/1     Running   0          14h   172.16.203.195   k8s-master-lb   <none>           <none>
web-2                    1/1     Running   0          14h   172.25.92.67     k8s-master02    <none>           <none>
[root@k8s-master-lb ~]# 
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更新与回滚

建议使用OnDelete更新方式，并配置标签，在符合标签的节点上才部署容器。