将springboot项目外部tomcat部署在k8s
制作docker镜像下载jdk,tomcatapache-tomcat-8.5.77.tar.gzjdk-8u311-linux-x64.tar.gz将jdk,tomcat,war包导入虚拟机编写Doukerfile#文件名tomcat8.5.Dockerfile#使用centos7FROM centos:7#维护者MAINTAINER xxxx@qq.com#将jdk压缩包导入镜像,会自动解压A
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制作docker镜像
下载jdk,tomcat
apache-tomcat-8.5.77.tar.gz
jdk-8u311-linux-x64.tar.gz
将jdk,tomcat,war包导入虚拟机
编写Doukerfile
#文件名tomcat8.5.Dockerfile
#使用centos7
FROM centos:7
#维护者
MAINTAINER xxxx@qq.com
#将jdk压缩包导入镜像,会自动解压
ADD ./jdk-8u311-linux-x64.tar.gz /usr/local/
#将tomcat压缩包导入镜像,会自动解压
ADD ./apache-tomcat-8.5.77.tar.gz /usr/local/
#将springboot.war导入tomcat/webapps目录
ADD ./k8s-demo.war /usr/local/apache-tomcat-8.5.77/webapps/
#liunx设置中文环境
ENV LC_ALL en_US.UTF-8
#安装centos基础插件
RUN yum -y install gcc openssl apr apr-util apr-devel net-tools vim
#springboot项目导出execl支持不然会报bfontmanager.so: libfreetype.so.6: cannot open shared object file: No such file or directory"}
RUN yum install -y ttf-dejavu fontconfig
#设置环境变量
ENV MYPATH /usr/local
WORKDIR $MYPATH
ENV JAVA_HOME /usr/local/jdk1.8.0_311
ENV CLASSPATH $JAVA_HOME/lib/dt.jar:$JAVA/lib/tools.jar
ENV CATALINA_HOME /usr/local/apache-tomcat-8.5.77
ENV CATALINA_BASH /usr/local/apache-tomcat-8.5.77
ENV PATH $PATH:$JAVA_HOME/bin:$CATALINA_HOME/lib:$CATALINA_HOME/bin
#公开端口
EXPOSE 8080
#设置启动命令
ENTRYPOINT ["/usr/local/apache-tomcat-8.5.77/bin/catalina.sh","run"]
另一种写法通过第三方镜像的方式
#文件名tomcat8.5.Dockerfile
#获取tomcat镜像
FROM tomcat:8.5
#维护者
MAINTAINER XXX@q1.com
#将target下的xx.war拷贝到/usr/local/tomcat/webapps/下
ADD ./k8s-demo.war /usr/local/tomcat/webapps/
#端口
EXPOSE 8080
#设置启动命令
ENTRYPOINT ["/usr/local/tomcat/bin/catalina.sh","run"]
生成镜像
#进入刚编写的Dockerfile文件所在的目录
cd /usr/local/test
#生成镜像
docker build -f tomcat8.5.Dockerfile -t k8s-tomcat .
#查看镜像
docker images
将镜像上传到本地私有镜像仓库
#将镜像打成私有仓库ip+:端口的tag
docker tag k8s-tomcat 192.168.99.192:5000/k8s-tomcat:v1.0
#删除k8s-tomcat镜像
docker rmi k8s-tomcat
#上传镜像
docker push 192.168.99.192:5000/k8s-tomcat:v1.0
编写k8s yaml文件
vi k8s-tomcat.yaml
#文件内容
# 以Deployment部署Pod
apiVersion: apps/v1
kind: Deployment
metadata:
#pod名称
name: k8s-tomcat
#pod所属的命名空间
namespace: wl-namespace
spec:
selector:
matchLabels:
#选label=k8s-tomcat
app: k8s-tomcat
replicas: 1
#pod定义模板
template:
metadata:
labels:
app: k8s-tomcat
spec:
containers:
- name: k8s-tomcat
#刚创建docker镜像
image: 192.168.99.192:5000/k8s-tomcat:v1.0
ports:
- containerPort: 8080
---
# 创建Pod的Service
apiVersion: v1
kind: Service
metadata:
name: k8s-tomcat
namespace: wl-namespace
spec:
ports:
- port: 80
protocol: TCP
targetPort: 8080
selector:
app: k8s-tomcat
---
# 创建Ingress,定义访问规则,一定要记得提前创建好nginx ingress controller
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: k8s-tomcat
namespace: wl-namespace
spec:
rules:
- host: www.k8s.demo
http:
paths:
- path: /
backend:
serviceName: k8s-tomcat
servicePort: 80
运行pod
#运行pod
kubectl apply -f k8s-tomcat.yaml
#查看pod对应的svc,ingress
kubectl get All -n wl-namespace
制作从制作docker镜像到发布到k8s脚本
#以前的war
rm -rf settlement.war
#将当前目录的war命名为自定义的名的war包
mv 123go-deployer-0.0.2-SNAPSHOT.war settlement.war
#停止正在运行的pod及相关资源
kubectl delete -f wl-settlement.yaml
#制作docker镜像
docker build -f settlement.Dockerfile -t settlement .
#删除docker镜像
docker rmi 172.18.1.248:5000/settlement:v1
#docker 镜像重命名
docker tag settlement 172.18.1.248:5000/settlement:v1
#删除以前镜像
docker rmi settlement
#推送镜像到私有仓库
docker push 172.18.1.248:5000/settlement:v1
#启动k8s pod
kubectl apply -f wl-settlement.yaml
k8s 补充知识
指定pod运行在特定的服务器
namespace: default
spec:
selector:
matchLabels:
#选label=k8s-tomcat
app: wl-settlement
replicas: 1
#pod定义模板
template:
metadata:
labels:
app: wl-settlement
spec:
#指定pod运行在label=test的node服务器
nodeSelector:
name: test
containers:
- name: wl-settlement
image: 172.18.1.248:5000/settlement:v1
ports:
- containerPort: 8080
nodeport打开指定端口(k8s默认端口范围30000~50000)
# 创建Pod的Service
apiVersion: v1
kind: Service
metadata:
name: wl-settlement
namespace: default
spec:
type: NodePort
ports:
- port: 80
nodePort: 38472
protocol: TCP
targetPort: 8080
selector:
app: wl-settlement
一个项目创建多个访问端口
# 以Deployment部署Pod
apiVersion: apps/v1
kind: Deployment
metadata:
name: cim-server
spec:
selector:
matchLabels:
app: cim-server
replicas: 1
template:
metadata:
labels:
app: cim-server
spec:
containers:
- name: cim-server
image: 172.18.1.248:5000/cim-server:v1
ports:
- containerPort: 8080
- containerPort: 23456
- containerPort: 34567
---
# 创建Pod的Service
apiVersion: v1
kind: Service
metadata:
name: cim-server
spec:
#创建多个端口
ports:
- name: http
port: 50310
protocol: TCP
targetPort: 8080
- name: tcp
port: 50311
protocol: TCP
targetPort: 23456
- name: webso
port: 50312
# 以Deployment部署Pod
apiVersion: apps/v1
kind: Deployment
metadata:
name: cim-server
spec:
selector:
matchLabels:
app: cim-server
replicas: 1
template:
metadata:
labels:
app: cim-server
spec:
containers:
- name: cim-server
image: 172.18.1.248:5000/cim-server:v1
ports:
- containerPort: 8080
- containerPort: 23456
- containerPort: 34567
---
# 创建Pod的Service
apiVersion: v1
kind: Service
metadata:
name: cim-server
spec:
ports:
- name: http
port: 50310
protocol: TCP
targetPort: 8080
- name: tcp
port: 50311
protocol: TCP
targetPort: 23456
- name: webso
port: 50312
protocol: TCP
targetPort: 34567
selector:
app: cim-server
---
# 创建Ingress,定义访问规则,一定要记得提前创建好nginx ingress controller
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: cim-server
spec:
rules:
- host: www.wanglei.com.web
http:
paths:
- path: /
backend:
serviceName: cim-server
servicePort: 50310
- host: www.wanglei.com.app
http:
paths:
- path: /
backend:
serviceName: cim-server
servicePort: 50311
- host: www.wanglei.com.websocket
http:
paths:
- path: /
backend:
serviceName: cim-server
servicePort: 50313
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