一、容器交付流程
二、k8s部署项目流程（细节过程）
三、Java项目打包
准备Java项目,把java进行打包（jar包或者war包）
依赖环境：
1）java环境 jdk环境
2）maven环境
打包：
mvn clean package
打包完成后会在target目录下生成jar包：
四、构建镜像
1.上传jar包
[root@kubernetes-master-001 ~]# mkdir -p test-java && cd test-java
[root@kubernetes-master-001 ~/test-java]# rz
[root@kubernetes-master-001 ~/test-java]# ll
total 17156
-rw-r--r-- 1 root root 17566601 Nov 26 16:35 demojenkins.jar
2.编写Dockerfile文件
[root@kubernetes-master-001 ~/test-java]# vi Dockerfile
FROM openjdk:8-jdk-alpine
VOLUME /tmp
ADD ./demojenkins.jar demojenkins.jar
ENTRYPOINT ["java","-jar","/demojenkins.jar", "&"]
3.构建镜像
[root@kubernetes-master-001 ~/test-java]# docker build -t java-demo:v1.0 .
Sending build context to Docker daemon 17.57MB
Step 1/4 : FROM openjdk:8-jdk-alpine
---> a3562aa0b991
Step 2/4 : VOLUME /tmp
---> Using cache
---> cf4c76b7202b
Step 3/4 : ADD ./demojenkins.jar demojenkins.jar
---> ff2b30af1a30
Step 4/4 : ENTRYPOINT ["java","-jar","/demojenkins.jar", "&"]
---> Running in b4acb4c7da0f
Removing intermediate container b4acb4c7da0f
---> b00fb1e33c49
Successfully built b00fb1e33c49
Successfully tagged java-demo:v1.0
4.验证镜像
[root@kubernetes-master-001 ~/test-java]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
java-demo v1.0 b00fb1e33c49 22 seconds ago 122MB
五、推送镜像到镜像仓库
#1.登录阿里云 --> 容器镜像服务 --> 选择个人仓库/企业仓库 --> 然后选择镜像仓库 --> 选择创建镜像仓库
[root@kubernetes-master-001 ~/test-java]# docker login --username=j**** registry.cn-shanghai.aliyuncs.com
Password:
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Login Succeeded
[root@kubernetes-master-001 ~/test-java]# docker tag b00fb1e33c49 registry.cn-shanghai.aliyuncs.com/linux_yuncloud/java-demo:v1.0.0
[root@kubernetes-master-001 ~/test-java]# docker push registry.cn-shanghai.aliyuncs.com/linux_yuncloud/java-demo:v1.0.0
The push refers to repository [registry.cn-shanghai.aliyuncs.com/linux_yuncloud/java-demo]
37b94cd6b0c0: Pushed
ceaf9e1ebef5: Pushed
9b9b7f3d56a0: Pushed
f1b5933fe4b5: Pushed
v1.0.0: digest: sha256:96595cf6e6a26c22c44712b0fb777845a859996b15ab7c788351fd1a29ea196c size: 1159
六、部署Java应用
[root@kubernetes-master-001 ~/test-java]# kubectl create deployment javademo1 --image=registry.cn-shanghai.aliyuncs.com/linux_yuncloud/java-demo:v1.0.0 --dry-run=client -o yaml > javademo1.yaml
[root@kubernetes-master-001 ~/test-java]# kubectl apply -f javademo1.yaml
deployment.apps/javademo1 created
[root@kubernetes-master-001 ~/test-java]# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
javademo1-789d495564-4jxmc 1/1 Running 0 3m22s 10.244.1.129 kubernetes-node-002 <none> <none>
[root@kubernetes-master-001 ~/test-java]# kubectl scale deployment javademo1 --replicas=3
deployment.apps/javademo1 scaled
[root@kubernetes-master-001 ~/test-java]# kubectl get pods
NAME READY STATUS RESTARTS AGE
javademo1-789d495564-4jxmc 1/1 Running 0 7m15s
javademo1-789d495564-lnvcc 1/1 Running 0 2m15s
javademo1-789d495564-qzqrj 1/1 Running 0 2m15s
七、暴露service
[root@kubernetes-master-001 ~/test-java]# kubectl expose deployment javademo1 --port=8111 --target-port=8111 --type=NodePort
service/javademo1 exposed
[root@kubernetes-master-001 ~/test-java]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
javademo1 NodePort 10.98.66.203 <none> 8111:31873/TCP 15s
八、访问测试
