前言：
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架构图如下：
nginx服务的配置文件nginx.yaml如下：
kind: Deployment#apiVersion: extensions/v1beta1apiVersion: apps/v1metadata: labels: app: linux66-nginx-deployment-label name: linux66-nginx-deployment namespace: linux66spec: replicas: 1 selector: matchLabels: app: linux66-nginx-selector template: metadata: labels: app: linux66-nginx-selector spec: containers: - name: linux66-nginx-container image: nginx #command: ["/apps/tomcat/bin/run_tomcat.sh"] imagePullPolicy: IfNotPresent #imagePullPolicy: Always ports: - containerPort: 80 protocol: TCP name: http - containerPort: 443 protocol: TCP name: https env: - name: "password" value: "123456" - name: "age" value: "18"# resources:# limits:# cpu: 2# memory: 2Gi# requests:# cpu: 500m# memory: 1Gi---kind: ServiceapiVersion: v1metadata: labels: app: linux66-nginx-service-label name: linux66-nginx-service namespace: linux66spec: type: NodePort ports: - name: http port: 80 protocol: TCP targetPort: 80 nodePort: 30006 - name: https port: 443 protocol: TCP targetPort: 443 nodePort: 30443 selector: app: linux66-nginx-selector
tomcat服务的配置文件tomcat.yaml如下：
root@k8s-master:~/yaml/1202# cat tomcat.yamlkind: Deployment#apiVersion: extensions/v1beta1apiVersion: apps/v1metadata: labels: app: linux66-tomcat-app1-deployment-label name: linux66-tomcat-app1-deployment namespace: linux66spec: replicas: 1 selector: matchLabels: app: linux66-tomcat-app1-selector template: metadata: labels: app: linux66-tomcat-app1-selector spec: containers: - name: linux66-tomcat-app1-container image: tomcat:7.0.94-alpine #command: ["/apps/tomcat/bin/run_tomcat.sh"] imagePullPolicy: IfNotPresent #imagePullPolicy: Always ports: - containerPort: 8080 protocol: TCP name: http env: - name: "password" value: "123456" - name: "age" value: "18" resources: limits: cpu: 1 memory: "512Mi" requests: cpu: 500m memory: "512Mi"---kind: ServiceapiVersion: v1metadata: labels: app: linux66-tomcat-app1-service-label name: linux66-tomcat-app1-service namespace: linux66spec: #type: NodePort ports: - name: http port: 80 protocol: TCP targetPort: 8080 #nodePort: 40003 selector: app: linux66-tomcat-app1-selector
创建namespace
kubectl create ns linux66
添加tomcat页面
root@k8s-master:~/yaml/1202# kubectl exec -it -n linux66 linux66-tomcat-app1-deployment-7946f87f8f-28r7b bashkubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.bash-4.4# pwd/usr/local/tomcatbash-4.4# lsBUILDING.txt NOTICE RUNNING.txt include native-jni-lib workCONTRIBUTING.md README.md bin lib tempLICENSE RELEASE-NOTES conf logs webappsbash-4.4# cd webapps/bash-4.4# lsROOT docs examples host-manager managerbash-4.4# mkdir loginbash-4.4# lsROOT docs examples host-manager login managerbash-4.4# echo "<h1>Login Web Page</h1>" >login/index.jspbash-4.4# exit
修改haproxy配置
defaults log global mode http option httplog option dontlognull timeout connect 5000 timeout client 50000 timeout server 50000 errorfile 400 /etc/haproxy/errors/400.http errorfile 403 /etc/haproxy/errors/403.http errorfile 408 /etc/haproxy/errors/408.http errorfile 500 /etc/haproxy/errors/500.http errorfile 502 /etc/haproxy/errors/502.http errorfile 503 /etc/haproxy/errors/503.http errorfile 504 /etc/haproxy/errors/504.httplisten k8s-cluster-01-6443 bind 172.31.7.188:6443 mode tcp server k8s-master.host.com 172.31.7.2:6443 check inter 3s fall 3 rise 1#增加如下配置，访问80的时候通过vip转到宿主机的80端口listen k8s-linux66-nginx-80 bind 172.31.7.189:80 mode tcp server k8s-master.host.com 172.31.7.2:30006 check inter 3s fall 3 rise 1
验证结果
修改nginx配置，访问login时跳转到tomcat服务,一般是把这部分配置打到镜像里面。
root@linux66-nginx-deployment-6bb84c7d7b-jxfnc:/# cat /etc/nginx/conf.d/default.conf server { listen 80; listen [::]:80; server_name localhost; #access_log /var/log/nginx/host.access.log main; location / { root /usr/share/nginx/html; index index.html index.htm; }#增加如下配置，访问login页面跳车到tomcat，地址通tomcat的svc地址，最好写全称 location /login{ proxy_pass ; }#nginx -s reload静态页面直接通过nginx访问
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