k8s 相关

• 阿里 dns

223.5.5.5

　　

 

•  kubectl get pods -n kube-system

•  测试 kubernetes 集群

在 Kubernetes 集群中创建一个 pod，验证是否正常运行：

$ kubectl create deployment nginx --image=nginx
$ kubectl expose deployment nginx --port=80 --type=NodePort
$ kubectl get pod,svc

访问地址：http://NodeIP:Port

• kubectl 工具查看当前集群组件状态

kubectl get cs

• Error from server (Forbidden): Forbidden (user=kubernetes, verb=get, resource=nodes, subresource=proxy) ( pods/log java-k8sdemo-68647fdfd7-pwnnj)

[root@m1 ~]# kubectl create clusterrolebinding kubernetes   --clusterrole=cluster-admin   --user=kubernetes

•  两种安装方式比较

 

• yaml 文件中，controller & pod

 

• 容器交付过程

  

• 制作镜像

docker build -t xxl-job-executor-sample-springboot:2.2.0 .

• 查看镜像是否制作成功

• 将镜像推送到镜像仓库

$ sudo docker login --username=xil**** registry.cn-shanghai.aliyuncs.com
$ sudo docker tag [ImageId] registry.cn-shanghai.aliyuncs.com/java-k8sdemo/xxl-job-executor:[镜像版本号]
$ sudo docker push registry.cn-shanghai.aliyuncs.com/java-k8sdemo/xxl-job-executor:[镜像版本号]

• 从阿里云下载镜像部署到本地 k8s：

1. kubectl create deployment xxl-job-admin --image=registry.cn-shanghai.aliyuncs.com/java-k8sdemo/xxl-job-admin:2.2.0 --dry-run -o yaml > xxl-job-admin-deployment.yaml
   kubectl create deployment xxl-job-executor --image=registry.cn-shanghai.aliyuncs.com/java-k8sdemo/xxl-job-executor-sample-springboot:2.2.0 --dry-run -o yaml > xxl-job-executor-deployment.yaml

2. kubectl apply -f xxl-job-admin-deployment.yaml 
   kubectl apply -f xxl-job-executor-deployment.yaml 

3. kubectl expose deployment xxl-job-admin --port=8080 --target-port=8080 --type=NodePort --dry-run=client -o yaml > xxl-job-admin-svc-expose.yaml
   kubectl expose deployment xxl-job-executor --port=7001 --target-port=7001 --type=NodePort --dry-run=client -o yaml > xxl-job-executor-svc.yaml