K8s 部署java项目

K8s 部署java项目 K8s 部署jenkins项目

创建目录

[root@master ~]# tree /java/
/java/
├── dockerfile
└── files
    ├── apache-tomcat-9.0.35.tar.gz
    ├── index.jsp
    ├── install.sh
    ├── jenkins-2.319.war

写dockerfile

[root@master ~]# mkdir -p /java/files
[root@master ~]# touch dockerfile
[root@master ~]# ls /java/
dockerfile  files
[root@master ~]# ls /java/files/
apache-tomcat-9.0.35.tar.gz  index.jsp  install.sh  jenkins-2.319.war

构建镜像

[root@master ~]# cat /java/files/install.sh 
#!/bin/bash

rm -rf /etc/yum.repos.d/*
curl -o /etc/yum.repos.d/CentOS-base.repo https://mirrors.aliyun.com/repo/Centos-$(awk -F '"' 'NR==5{print $2}' /etc/os-release).repo
sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-base.repo
yum install -y java-1.8.0-openjdk 
ln -s /usr/local/apache-tomcat-${version}/ /usr/local/tomcat 
cp /opt/jenkins-2.319.war /usr/local/tomcat/webapps/

[root@master ~]# vi /java/dockerfile 
FROM centos

MAINTAINER JRE  "xxxx@dsa.com"

ENV version 9.0.35 
ENV PATH $PATH:/usr/local/tomcat/bin

ADD files/apache-tomcat-${version}.tar.gz /usr/local/

COPY files/jenkins-2.319.war /opt
COPY files/index.jsp /opt
COPY files/install.sh /tmp

RUN  /tmp/install.sh

WORKDIR /usr/local/tomcat/bin

EXPOSE 8080

CMD ["/usr/local/tomcat/bin/catalina.sh", "run"] 


[root@master java]# docker build -t linlusama/tomcat:v2.0 .
Sending build context to Docker daemon  157.2MB
Step 1/12 : FROM centos
 ---> 5d0da3dc9764
Step 2/12 : MAINTAINER JRE  "xxxx@dsa.com"
 ---> Using cache
 ---> ed908e34c66c
Step 3/12 : ENV version 9.0.35
 ---> Using cache
 ---> 78770ae2aebc
Step 4/12 : ENV PATH $PATH:/usr/local/tomcat/bin
 ---> Using cache
 ---> 830cc1d69ff7
Step 5/12 : ADD files/apache-tomcat-${version}.tar.gz /usr/local/
 ---> Using cache
 ---> 9807829a6ead
Step 6/12 : COPY files/jenkins-2.319.war /opt
 ---> Using cache
 ---> b309567d5045
Step 7/12 : COPY files/index.jsp /opt
 ---> Using cache
 ---> 3550e9891309
Step 8/12 : COPY files/install.sh /tmp
 ---> Using cache
 ---> a35142f8f9da
Step 9/12 : RUN  /tmp/install.sh
 ---> Using cache
 ---> 380aeee274c7
Step 10/12 : WORKDIR /usr/local/tomcat/bin
 ---> Using cache
 ---> 0dee4b7fd730
Step 11/12 : EXPOSE 8080
 ---> Using cache
 ---> 365e5624149e
Step 12/12 : CMD ["/usr/local/tomcat/bin/catalina.sh", "run"]
 ---> Using cache
 ---> ddc629c835d1
Successfully built ddc629c835d1
Successfully tagged xm17671855780/tomcat:v2.0

部署

//编写清单文件
[root@master manifes]# cat javashop.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  name: javashop
  labels:
    app: javashop
spec:
  replicas: 2
  selector:
    matchLabels:
      app: javashop
  template:
    metadata:
      name: javashop
      labels:
        app: javashop
    spec:
      containers:
      - image: linlusama/tomcat:v2
        imagePullPolicy: IfNotPresent
        name: javashop
---
apiVersion: v1
kind: Service
metadata:
  name: javashop
spec:
  ports:
  - port: 8090
    targetPort: 8090
    nodePort: 30188
  selector:
    app: javashop
  type: NodePort 

//创建pod
[root@master manifes]# kubectl apply -f javashop.yaml 
deployment.apps/javashop created
service/javashop created

[root@master manifes]# kubectl get pods,svc
NAME                            READY   STATUS              RESTARTS   AGE
pod/javashop-7588b776bd-j7r9h   0/1     ContainerCreating   0          6s
pod/javashop-7588b776bd-pgxgt   0/1     ContainerCreating   0          6s

NAME                 TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
service/javashop     NodePort    10.101.42.102           8090:30188/TCP   6s
service/kubernetes   ClusterIP   10.96.0.1               443/TCP          9d