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1、在 k8s 中部署利用流程
- 制作镜像（个别通过 Dockerfile）
1、hub.docker.com（规范镜像）
2、满足个性化定制化需要（标准化、调优参数等） - 控制器治理 Pod
- 裸露应用服务
- 对外公布利用
- 治理日志 / 集群监控
2、应用 Deployment 部署 Java 利用
[root@k8s-m ~]# docker run -d --name=web -p 80:80 e a=test nginx
| [root@k8s-m ~]# kubectl create --help | |
| [root@k8s-m ~]# kubectl create deployment --help |
[root@k8s-m ~]# docker pull yejf/java-demo
| [root@k8s-m ~]# kubectl create deployment web --image=yejf/java-demo:latest | |
| [root@k8s-m ~]# kubectl get pod | |
| NAME READY STATUS RESTARTS AGE | |
| nginx-f89759699-bxftk 1/1 Running 0 17h | |
| web-7757ff5c-pt6jd 1/1 Running 0 83s |
| [root@k8s-m ~]# kubectl get deploy,pods | |
| NAME READY UP-TO-DATE AVAILABLE AGE | |
| deployment.apps/nginx 1/1 1 1 2d16h | |
| deployment.apps/web 1/1 1 1 2m53s | |
| NAME READY STATUS RESTARTS AGE | |
| pod/nginx-f89759699-bxftk 1/1 Running 0 17h | |
| pod/web-7757ff5c-pt6jd 1/1 Running 0 2m53s |
| [root@k8s-m ~]# kubectl get pod -o wide | |
| NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES | |
| nginx-f89759699-bxftk 1/1 Running 0 17h 10.244.215.77 k8s-n1 <none> <none> | |
| web-7757ff5c-pt6jd 1/1 Running 0 5m55s 10.244.111.205 k8s-n2 <none> <none> | |
| [root@k8s-m ~]# |
[root@k8s-m ~]# kubectl expose deployment web --port=80 --target-port=8080 --name=web --type=NodePort
| [root@k8s-m ~]# kubectl get service | |
| NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE | |
| kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 2d17h | |
| nginx NodePort 10.100.4.40 <none> 80:30026/TCP 2d16h | |
| web NodePort 10.104.68.193 <none> 80:32583/TCP 47s | |
| [root@k8s-m ~]# kubectl get svc | |
| NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE | |
| kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 2d17h | |
| nginx NodePort 10.100.4.40 <none> 80:30026/TCP 2d16h | |
| web NodePort 10.104.68.193 <none> 80:32583/TCP 51s |
http://192.168.X.63:32853
3、应用 YAML 部署 Java 利用
| # vim java-demo.yaml | |
| apiVersion: apps/v1 | |
| kind: Deployment | |
| metadata: | |
| name: java-demo | |
| namespace: default | |
| spec: | |
| replicas: 1 | |
| selector: | |
| matchLabels: | |
| app: java-demo | |
| template: | |
| metadata: | |
| labels: | |
| app: java-demo | |
| spec: | |
| containers: | |
| - name: nginx | |
| image: yejf/java-demo | |
| ports: |
| [root@k8s-m ~]# kubectl apply -f java-demo.yaml | |
| deployment.apps/java-demo created | |
| [root@k8s-m ~]# kubectl get deploy | |
| NAME READY UP-TO-DATE AVAILABLE AGE | |
| java-demo 1/1 1 1 41s | |
| nginx 1/1 1 1 2d17h | |
| web 1/1 1 1 27m | |
| [root@k8s-m ~]# kubectl get pod | |
| NAME READY STATUS RESTARTS AGE | |
| java-demo-d9787d978-7dcp6 1/1 Running 0 50s | |
| nginx-f89759699-bxftk 1/1 Running 0 18h | |
| web-7757ff5c-pt6jd 1/1 Running 0 28m |
2、利用部署 / 降级、回滚和弹性伸缩
正文完
