院长手把手教学---DaemonSet实验
编写资源清单
[root@k8s-master ~]# vim deployment.yaml
apiVersion: apps/v1
kind: DaemonSet
metadata:
name: daemonset-example
labels:
app: daemonset
spec:
selector:
matchLabels:
name: daemonset-example
template:
metadata:
labels:
name: daemonset-example
spec:
containers:
- name: daemonset-example
image: nginx:1.17
imagePullPolicy: IfNotPresent创建Pod资源，这里最好用create，因为它是一个 命令式，不过我就用apply
[root@k8s-master ~]# kubectl apply -f daemonset.yaml
daemonset.apps/daemonset-example created创建后，查看Pod资源详细信息，发现每个Node节点都会有一个Pod
[root@k8s-master ~]# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
daemonset-example-bfmvb 1/1 Running 0 19s 10.244.2.145 k8s-node3 <none> <none>
daemonset-example-frpfh 1/1 Running 0 19s 10.244.3.122 k8s-node2 <none> <none>
daemonset-example-zx8zk 1/1 Running 0 19s 10.244.1.122 k8s-node1 <none> <none>我们删除k8s-node3节点上的Pod
[root@k8s-master ~]# kubectl delete pods daemonset-example-bfmvb
pod "daemonset-example-bfmvb" deleted再次查看Pod资源详细信息，发现又在k8s-node3节点上重新创建了一个Pod，这样使每个Node都运行一个Pod资源
[root@k8s-master ~]# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
daemonset-example-frpfh 1/1 Running 0 61s 10.244.3.122 k8s-node2 <none> <none>
daemonset-example-fzn75 1/1 Running 0 3s 10.244.2.146 k8s-node3 <none> <none>
daemonset-example-zx8zk 1/1 Running 0 61s 10.244.1.122 k8s-node1 <none> <none>本文参与 腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。
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