【K8S运维知识汇总】第2天12：验证k8s集群

验证kuberneters集群

在任意一个运算节点，创建一个资源配置清单

这里我们选择DHSS7-21.host.com主机

[root@hdss7-22 ~]# cd /root/
[root@hdss7-22 ~]# vi /root/nginx-ds.yaml
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: nginx-ds
spec:
  template:
    metadata:
      labels:
        app: nginx-ds
    spec:
      containers:
      - name: my-nginx
        image: harbor.od.com/public/nginx:v1.7.9
        ports:
        - containerPort: 80

测试完删除

[root@hdss7-22 ~]# kubectl create -f nginx-ds.yaml 
daemonset.extensions/nginx-ds created

 
[root@hdss7-22 ~]# kubectl get pods -o wide
NAME             READY   STATUS    RESTARTS   AGE   IP           NODE                NOMINATED NODE   READINESS GATES
nginx-ds-72zm5   1/1     Running   0          86s   172.7.21.2   hdss7-21.host.com   <none>           <none>
nginx-ds-cb7ct   1/1     Running   0          86s   172.7.22.2   hdss7-22.host.com   <none>           <none>

[root@hdss7-22 ~]# kubectl get cs
NAME                 STATUS    MESSAGE              ERROR
scheduler            Healthy   ok                   
controller-manager   Healthy   ok                   
etcd-0               Healthy   {"health": "true"}   
etcd-2               Healthy   {"health": "true"}   
etcd-1               Healthy   {"health": "true"} 

[root@localhost ~]# kubectl get node
NAME                STATUS   ROLES         AGE     VERSION
hdss7-21.host.com   Ready    master,node   3h55m   v1.15.2
hdss7-22.host.com   Ready    master,node   3h27m   v1.15.2

# 以上所有状态检查正常时，说明集群搭建成功


[root@hdss7-22 ~]# kubectl delete -f nginx-ds.yaml

实现一整套的K8S生态的搭建，并实战交付一套dubbo(java)微服务，我们要一步步实现以下工作。

1.持续集成
2.配置中心
3.监控意向图
4.日志收集分析系统
5.自动化运维平台（最终实现基于K8S的开源Paas平台） 

资源要求：
2c/2g/50g x 3 + 4c/4g/50g x 2