k8s如何部署java项目

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下载jar的包

[root@master test]# wget https://dl.halo.run/release/halo-1.4.16.jar[root@master ~]# lsanaconda-ks.cfg  flannel.yml  halo-1.4.16.jar  init[root@master ~]#

编写Dockerfile并制作镜像

[root@master ~]# mkdir -p test/files[root@master ~]# mv halo-1.4.16.jar test/files/[root@master ~]# cd test/[root@master test]# touch Dockerfile[root@master test]# lsDockerfile  files[root@master test]# [root@master test]# cat Dockerfile FROM centosCOPY files/halo-1.4.16.jar /usr/local/halo-1.4.16.jarENTRYPOINT ["java","-jar","/usr/local/halo-1.4.16.jar"][root@master test]#

[root@master test]# docker build -t 3199560936/halo:v1 .Sending build context to Docker daemon  79.63MBStep 1/3 : FROM centos ---> 5d0da3dc9764Step 2/3 : COPY files/halo-1.4.16.jar /usr/local/halo-1.4.16.jar ---> 099645e57a21Step 3/3 : ENTRYPOINT ["java","-jar","/usr/local/halo-1.4.16.jar"] ---> Running in d1e44734578cRemoving intermediate container d1e44734578c ---> a38d07129607Successfully built a38d07129607Successfully tagged 3199560936/halo:v1[root@master test]# docker imagesREPOSITORY                                                        TAG        IMAGE ID       CREATED         SIZE3199560936/halo                                                   v1         a38d07129607   3 seconds ago   311MB[root@master test]#

上传镜像到docker仓库

[root@master ~]# docker login[root@master ~]# docker push 3199560936/halo:v1The push refers to repository [docker.io/3199560936/halo]5906a49ee250: Pushed 74ddd0ec08fa: Mounted from library/centos v1: digest: sha256:fb8cb538526b4d73e1a16b9b1b8a3e4ab4b171f0dbaadfbf6673def9620367f2 size: 741[root@master ~]#

编写k8s的资源清单

[root@master test]# cat halo.yml apiVersion: apps/v1kind: Deploymentmetadata:  name: halo  labels:    app: halospec:  replicas: 1  selector:    matchLabels:      app: halo  template:    metadata:      name: halo      labels:        app: halo    spec:      containers:      - image: 3199560936/halo:v1        imagePullPolicy: IfNotPresent        name: halo---apiVersion: v1kind: Servicemetadata:  name: halospec:  ports:  - port: 8090    targetPort: 8090    nodePort: 32767  selector:    app: halo  type: NodePort[root@master test]#

创建

[root@master test]# kubectl apply -f halo.ymldeployment.apps/halo createdservice/halo created

查看

[root@master test]# kubectl get deploy,pod,svcNAME                   READY   UP-TO-DATE   AVAILABLE   AGEdeployment.apps/halo   1/1     1            1           32sNAME                        READY   STATUS    RESTARTS   AGEpod/halo-6d4cb5dc7b-nzdpw   1/1     Running   0          32sNAME                 TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)          AGEservice/halo         NodePort    10.106.13.87           8090:32767/TCP   32sservice/kubernetes   ClusterIP   10.96.0.1              443/TCP          46h

使用本机IP:32767访问

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