14、Kubernetes DaemonSets与Jobs实战指南

Kubernetes DaemonSets与Jobs实战指南

1. DaemonSets基础操作

当fluentd DaemonSet成功提交到Kubernetes API后，可使用 kubectl describe 命令查询其当前状态：

$ kubectl describe daemonset fluentd
Name:           fluentd
Image(s):       fluent/fluentd:v0.14.10
Selector:       app=fluentd
Node-Selector:  <none>
Labels:         app=fluentd
Desired Number of Nodes Scheduled: 3
Current Number of Nodes Scheduled: 3
Number of Nodes Misscheduled: 0
Pods Status:    3 Running / 0 Waiting / 0 Succeeded / 0 Failed

此输出表明fluentd Pod已成功部署到集群的三个节点上。可使用 kubectl get pods 命令并结合 -o 标志验证：

$ kubectl get pods -o wide
NAME            AGE    NODE
fluentd-1q6c6   13m    k0-default-poo