3.实现nginx pod基于service name调用tom

作者: 哆啦A梦_ca52 | 来源:发表于2019-11-29 15:56 被阅读0次

修改为3个pod
root@master:/opt/k8s-data/ymal/test# vim nginx-test-v1.yaml 
  replicas: 3 # tells deployment to run 2 pods matching the template
root@master:/opt/k8s-data/ymal/test# kubectl apply -f nginx-test-v1.yaml 
查看增加ip地址的信息
root@master:/opt/k8s-data/ymal/test# kubectl get ep
NAME            ENDPOINTS                                              AGE
kubernetes      192.168.200.197:6443,192.168.200.198:6443              5d6h
nginx-service   172.31.104.149:80,172.31.167.81:80,172.31.180.105:80   109m

root@master:/opt/k8s-data/dockerfile# docker pull centos
打标签
root@master:/opt/k8s-data/dockerfile# docker tag centos harbor.wyh.net/baseimages/centos:7.6.1810
上传镜像
root@master:/opt/k8s-data/dockerfile# docker push  harbor.wyh.net/baseimages/centos:7.6.1810
进入到这个容器里
root@master:/opt/k8s-data/dockerfile# docker run -it --rm harbor.wyh.net/baseimages/centos:7.6.1810 
查看系统版本
[root@5a595eedee14 /]# cat /etc/redhat-release 
CentOS Linux release 8.0.1905 (Core) 
重新打标签
root@master:/opt/k8s-data/dockerfile# docker tag centos harbor.wyh.net/baseimages/centos:8.0.1905
上传系统
root@master:/opt/k8s-data/dockerfile# docker push harbor.wyh.net/baseimages/centos:8.0.1905

编辑dockerfiel
root@master:/opt/k8s-data/dockerfile/system/centos# cat Dockerfile  | grep  ^[^#]
FROM harbor.wyh.net/baseimages/centos:7.6.1810 
MAINTAINER Jack.Zhang  2973707860@qq.com
ADD filebeat-6.8.3-x86_64.rpm /tmp
RUN yum install -y /tmp/filebeat-6.8.3-x86_64.rpm vim wget tree  lrzsz gcc gcc-c++ automake pcre pcre-devel zlib zlib-devel openssl openssl-devel iproute net-tools iotop &&  rm -rf /etc/localtime /tmp/filebeat-6.8.3-x86_64.rpm && ln -snf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && useradd  nginx -u 2019 && useradd www -u 2020
root@master:/opt/k8s-data/dockerfile# docker pull centos:7.6.1810
打标签
root@master:/opt/k8s-data/ymal/test# docker tag 0f3e07c0138f harbor.wyh.net/baseimages/centos:7.6.1810
上传镜像
root@master:/opt/k8s-data/ymal/test# docker push harbor.wyh.net/baseimages/centos:7.6.1810
添加build脚本信息
root@master:/opt/k8s-data/dockerfile/system/centos# cat build-command.sh 
#!/bin/bash
#docker build -t  linux37-centos-base:7.6.1810 .
docker build -t harbor.wyh.net/baseimages/centos:7.6.1810 .
docker push harbor.wyh.net/baseimages/centos:7.6.1810 
把镜像上传上去

进入到容器里

root@master:/opt/k8s-data/dockerfile/system/centos# docker run -it --rm harbor.wyh.net/baseimages/centos:7.6.1810 bash

修改java的镜像,添加javajdk

root@master:/opt/k8s-data/dockerfile/web/linux37/jdk-8u-212# vim Dockerfile 
FROM harbor.wyh.net/baseimages/centos:7.6.1810
maintainer zhangshijie 2973707860@qq.com
ADD jdk-8u212-linux-x64.tar.gz /usr/local/src/
RUN ln -sv /usr/local/src/jdk1.8.0_212 /usr/local/jdk
ADD profile /etc/profile
ENV JAVA_HOME /usr/local/jdk
ENV JRE_HOME $JAVA_HOME/jre
ENV CLASSPATH $JAVA_HOME/lib/:$JRE_HOME/lib/
ENV PATH $PATH:$JAVA_HOME/bin
root@master:/opt/k8s-data/dockerfile/web/linux37/jdk-8u-212# vim build-command.sh 
#!/bin/bash
docker build -t  harbor.wyh.net/baseimages/linux37-centos7.6-jdk:8u212 .
docker push  harbor.wyh.net/baseimages/linux37-centos7.6-jdk:8u212
root@master:/opt/k8s-data/dockerfile/web/linux37/jdk-8u-212# bash build-command.sh

添加tomcat的信息
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-8.5.45-base# cat Dockerfile | grep ^[^#]
FROM harbor.wyh.net/baseimages/linux37-centos7.6-jdk:8u212 
ENV TZ "Asia/Shanghai"
ENV LANG en_US.UTF-8
ENV TERM xterm
ENV TOMCAT_MAJOR_VERSION 8
ENV TOMCAT_MINOR_VERSION 8.5.45
ENV CATALINA_HOME /apps/tomcat
ENV APP_DIR ${CATALINA_HOME}/webapps
ADD apache-tomcat-8.5.45.tar.gz /apps
RUN ln -sv /apps/apache-tomcat-8.5.45 /apps/tomcat
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-8.5.45-base# cat build-command.sh 
#!/bin/bash
docker build -t  harbor.wyh.net/linux37/linux37-centos7.6-tomcat:8.5.45 .
docker push harbor.wyh.net/linux37/linux37-centos7.6-tomcat:8.5.45
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-8.5.45-base# bash build-command.sh

配置tomcat的app1的信息

root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app1# cat Dockerfile | grep ^[^#]
FROM harbor.wyh.net/linux37/linux37-centos7.6-tomcat:8.5.45
 maintainer zhangshijie "2973707860@qq.com"
ADD app.tar.gz /data/tomcat/webapps
ADD run_tomcat.sh /apps/tomcat/bin/run_tomcat.sh
ADD server.xml /apps/tomcat/conf/server.xml
ADD catalina.sh  /apps/tomcat/bin/catalina.sh
RUN chown www.www /apps/tomcat /data/tomcat /apps/apache-tomcat-8.5.45 -R
EXPOSE 8080 8443
CMD ["/apps/tomcat/bin/run_tomcat.sh"] 

root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app1# cat Dockerfile 
FROM harbor.wyh.net/linux37/linux37-centos7.6-tomcat:8.5.45
maintainer zhangshijie "2973707860@qq.com"
ADD app.tar.gz /data/tomcat/webapps
ADD run_tomcat.sh /apps/tomcat/bin/run_tomcat.sh
ADD server.xml /apps/tomcat/conf/server.xml
ADD catalina.sh  /apps/tomcat/bin/catalina.sh
RUN chown www.www /apps/tomcat /data/tomcat /apps/apache-tomcat-8.5.45 -R
EXPOSE 8080 8443
CMD ["/apps/tomcat/bin/run_tomcat.sh"] 
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app1# cat build-command.sh 
#/bin/bash
docker build -t   harbor.wyh.net/linux37/linux37-tomcat:app1 .
docker push harbor.wyh.net/linux37/linux37-tomcat:app1
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app1# bash build-command.sh 
运行可以访问
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app1# docker run -it --rm -p 8081:8080 harbor.wyh.net/linux37/linux37-tomcat:app1
Using CATALINA_BASE:   /apps/tomcat
Using CATALINA_HOME:   /apps/tomcat
Using CATALINA_TMPDIR: /apps/tomcat/temp
Using JRE_HOME:        /usr/local/jdk
Using CLASSPATH:       /apps/tomcat/bin/bootstrap.jar:/apps/tomcat/bin/tomcat-juli.jar
Tomcat started.
127.0.0.1   localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.17.0.2  eaedfa9c6317

image.png

修改APP2

root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app2# vim build-command.sh 
#!/bin/bash
docker build -t  harbor.wyh.net/linux37/linux37-tomcat:app2 .
docker push  harbor.wyh.net/linux37/linux37-tomcat:app2
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app2# cat Dockerfile | grep ^[^#]
FROM harbor.wyh.net/linux37/linux37-centos7.6-tomcat:8.5.45 
maintainer zhangshijie "2973707860@qq.com"
ADD app.tar.gz /data/tomcat/webapps
ADD run_tomcat.sh /apps/tomcat/bin/run_tomcat.sh
ADD server.xml /apps/tomcat/conf/server.xml
ADD catalina.sh  /apps/tomcat/bin/catalina.sh
RUN chown www.www /apps/tomcat /data/tomcat /apps/apache-tomcat-8.5.45 -R
EXPOSE 8080 8443
CMD ["/apps/tomcat/bin/run_tomcat.sh"] 
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app2# bash build-command.sh

创建目录

root@master:/opt/k8s-data/ymal# mkdir web/linux37/tomcat-app2 -p
root@master:/opt/k8s-data/ymal# mkdir web/linux37/tomcat-app1
root@master:/opt/k8s-data/ymal# mkdir namespaces
编辑yaml文件
root@master:/opt/k8s-data/ymal/namespaces# cat linux37.yaml 
apiVersion: v1 #API版本
kind: Namespace #类型为namespac
metadata:
  name: linux37
root@master:/opt/k8s-data/ymal/namespaces# kubectl apply -f linux37.yaml

查看已经有一个命名空间

创建pod的文件
root@master:/opt/k8s-data/yaml/web/linux37/tomcat-app1# cat tomcat-app1.yaml 
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  labels:
    app: linux37-tomcat-app1-deployment-label
  name: linux37-tomcat-app1-deployment
  namespace: linux37
spec:
  replicas: 1
  selector:
    matchLabels:
      app: linux37-tomcat-app1-selector
  template:
    metadata:
      labels:
        app: linux37-tomcat-app1-selector
    spec:
      containers:
      - name: linux37-tomcat-app1-container
        image: harbor.wyh.net/linux37/linux37-tomcat:app1 
        #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: 2
            memory: "2048Mi"
          requests:
            cpu: 0.5
            memory: "1024Mi"
---
kind: Service
apiVersion: v1
metadata:
  labels:
    app: linux37-tomcat-app1-service-label
  name: linux37-tomcat-app1-service
  namespace: linux37
spec:
  type: NodePort
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: 8080
    nodePort: 30002
  selector:
    app: linux37-tomcat-app1-selector

---
apiVersion: autoscaling/v2beta1
kind: HorizontalPodAutoscaler
metadata:
  namespace: linux37
  name: linux37-tomcat-app1-podautoscaler
  labels:
    app: linux37-tomcat-app1
    version: v2beta1
spec:
  scaleTargetRef:
    apiVersion: apps/v1 
    kind: Deployment
    name: linux37-tomcat-app1-deployment
  minReplicas: 1 
  maxReplicas: 5
  metrics:
  - type: Resource
    resource:
      name: cpu
      targetAverageUtilization: 1
  - type: Resource 
    resource:
      name: memory
      targetAverageValue: 1024Mi

root@master:/opt/k8s-data/yaml/web/linux37/tomcat-app1# kubectl  apply -f tomcat-app1.yaml 
deployment.extensions/linux37-tomcat-app1-deployment created
service/linux37-tomcat-app1-service created
horizontalpodautoscaler.autoscaling/linux37-tomcat-app1-podautoscaler created

查看ep的ip
root@master:/opt/k8s-data/yaml/web/linux37/tomcat-app1# kubectl get  ep -n linux37
NAME                          ENDPOINTS             AGE
linux37-tomcat-app1-service   172.31.104.152:8080   11h
查看pod 的ip地址
root@master:/opt/k8s-data/yaml/web/linux37/tomcat-app1# kubectl get pod -n linux37 -o wide
NAME                                              READY   STATUS    RESTARTS   AGE     IP               NODE              NOMINATED NODE   READINESS GATES
linux37-tomcat-app1-deployment-7d54894fdb-82xdl   1/1     Running   0          4m30s   172.31.104.152   192.168.200.207   <none>           <none>

访问宿主机的30002地址

修改app2

root@master:/opt/k8s-data/yaml/web/linux37/tomcat-app2# cat tomcat-app2.yaml | grep ^[^#]
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  labels:
    app: linux37-tomcat-app2-deployment-label
  name: linux37-tomcat-app2-deployment
  namespace: linux37
spec:
  replicas: 1
  selector:
    matchLabels:
      app: linux37-tomcat-app2-selector
  template:
    metadata:
      labels:
        app: linux37-tomcat-app2-selector
修改app2的名称
    spec:
      containers:
      - name: linux37-tomcat-app2-container
        image: harbor.wyh.net/linux37/linux37-tomcat:app2 
        #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: 2
            #memory: "2048Mi"
          requests:
            #cpu: 0.5
            #memory: "1024Mi"
---
kind: Service
apiVersion: v1
metadata:
  labels:
    app: linux37-tomcat-app2-service-label
  name: linux37-tomcat-app2-service
  namespace: linux37
spec:
  type: NodePort
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: 8080
    nodePort: 30003
修改端口30003
不能同一个宿主机端口
  selector:
    app: linux37-tomcat-app2-selector
root@master:/opt/k8s-data/yaml/web/linux37/tomcat-app2# kubectl apply -f tomcat-app2.yaml 
创建app2
root@master:/opt/k8s-data/yaml/web/linux37/tomcat-app2# kubectl get pod -n linux37 -o wide
NAME                                              READY   STATUS    RESTARTS   AGE   IP               NODE              NOMINATED NODE   READINESS GATES
linux37-tomcat-app1-deployment-7d54894fdb-82xdl   1/1     Running   0          27m   172.31.104.152   192.168.200.207   <none>           <none>
linux37-tomcat-app2-deployment-6cfff645c-rsd8k    1/1     Running   0          17s   172.31.104.154   192.168.200.207   <none>           <none>
修改nginx主页
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app2# vim app/index.html 
linux37 tomcat app2
查看服务信息
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app2# kubectl get service -n linux37
NAME                          TYPE       CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE
linux37-tomcat-app1-service   NodePort   10.20.188.42    <none>        80:30002/TCP   12h
linux37-tomcat-app2-service   NodePort   10.20.127.235   <none>        80:30003/TCP   19m
查看deployment
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app2# kubectl get deployment -n linux37
NAME                             READY   UP-TO-DATE   AVAILABLE   AGE
linux37-tomcat-app1-deployment   1/1     1            1           39m
linux37-tomcat-app2-deployment   1/1     1            1           12m

解析服务名称

root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app2# kubectl exec busybox nslookup linux37-tomcat-app1-service.linux37.svc.linux37.local
Server:    10.20.254.254
Address 1: 10.20.254.254 kube-dns.kube-system.svc.linux37.local

Name:      linux37-tomcat-app1-service.linux37.svc.linux37.local
Address 1: 10.20.188.42 linux37-tomcat-app1-service.linux37.svc.linux37.local
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app2# kubectl exec busybox nslookup linux37-tomcat-app2-service.linux37.svc.linux37.local
Server:    10.20.254.254
Address 1: 10.20.254.254 kube-dns.kube-system.svc.linux37.local

Name:      linux37-tomcat-app2-service.linux37.svc.linux37.local
Address 1: 10.20.127.235 linux37-tomcat-app2-service.linux37.svc.linux37.local
查看 serviec信息
root@master:/opt/k8s-data/dockerfile/web/linux37/tomcat-app2# kubectl get service -n linux37
NAME                          TYPE       CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE
linux37-tomcat-app1-service   NodePort   10.20.188.42    <none>        80:30002/TCP   12h
linux37-tomcat-app2-service   NodePort   10.20.127.235   <none>        80:30003/TCP   19m

创建nginx目录

root@master:/opt/k8s-data/dockerfile/web/linux37# mkdir nginx
修改dockerfile

root@master:/opt/k8s-data/dockerfile/web/linux37/nginx# cat Dockerfile | grep ^[^#]
FROM harbor.wyh.net/baseimages/centos:7.6.18102
MAINTAINER Jack.Zhang  2973707860@qq.com
RUN yum install  vim iotop bc gcc gcc-c++ glibc glibc-devel pcre \
pcre-devel openssl  openssl-devel zip unzip zlib-devel  net-tools \
lrzsz tree ntpdate telnet lsof tcpdump wget libevent libevent-devel \
bc  systemd-devel bash-completion traceroute -y 
ADD nginx-1.16.1.tar.gz /usr/local/src
RUN cd /usr/local/src/nginx-1.16.1 && ./configure --prefix=/apps/nginx && make && make install && ln -sv /apps/nginx/sbin/nginx /usr/bin/
RUN mkdir /data/nginx/html/linux37 -pv  
ADD nginx.conf /apps/nginx/conf/nginx.conf
ADD app.tar.gz /data/nginx/html/linux37
RUN useradd nginx -s /sbin/nologin -M
RUN chown nginx.nginx -R  /data/nginx/ /apps/nginx
EXPOSE 80 443
CMD ["nginx"]



修改nginx配置文件
root@master:/opt/k8s-data/dockerfile/web/linux37/nginx# cat nginx.conf | grep -v "#" | grep ^[^#]
user  www;
worker_processes  auto;
daemon off;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    server {
        listen       80;
        server_name  localhost;
        location / {
            root   html;
            index  index.html index.htm;
        }
        location /linux37 {
         root /data/nginx/html;
          index index.html;
        }
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}
编辑build
root@master:/opt/k8s-data/dockerfile/web/linux37/nginx# vim build-command.sh 
#!/bin/bash
#TAG=$1
docker build -t   harbor.wyh.net/linux37/nginx:v1 .
docker push harbor.wyh.net/linux37/nginx:v1
root@master:/opt/k8s-data/dockerfile/web/linux37/nginx# bash build-command.sh

运行容器

root@master:/opt/k8s-data/dockerfile/web/linux37/nginx# docker run  -it --rm -p 80:80 harbor.wyh.net/linux37/nginx:v1

image.png

访问页面

增加内容

root@master:/opt/k8s-data/dockerfile/web/linux37/nginx/app# echo "zengjia" >> index.html
压缩成tar.gz格式的,这样的就没有目录了
root@master:/opt/k8s-data/dockerfile/web/linux37/nginx/app# tar czvf app.tar.gz ./*
./1.jpg
./index.html

修改nginx的yaml信息

root@master:/opt/k8s-data/yaml/web/linux37/nginx# cat nginx.yaml | grep ^[^#]
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  labels:
    app: linux37-nginx-deployment-label
  name: linux37-nginx-deployment
  namespace: linux37
spec:
  replicas: 1
  selector:
    matchLabels:
      app: linux37-nginx-selector
  template:
    metadata:
      labels:
        app: linux37-nginx-selector
    spec:
      containers:
      - name: linux37-nginx-container
        image: harbor.wyh.net/linux37/nginx:v1
        imagePullPolicy: Always
        ports:
        - containerPort: 80
          protocol: TCP
          name: http
        env:
        - name: "password"
          value: "123456"
        - name: "age"
          value: "18"
        resources:
          limits:
            #cpu: 2
            #memory: "2048Mi"
          requests:
            #cpu: 0.5
            #memory: "1024Mi"
---
kind: Service
apiVersion: v1
metadata:
  labels:
    app: linux37-nginx-service-label
  name: linux37-nginx-service
  namespace: linux37
spec:
  type: NodePort
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: 80
    nodePort: 30004
  selector:
    app: linux37-nginx-selector
创建nginx的pod
root@master:/opt/k8s-data/yaml/web/linux37/nginx# kubectl apply -f nginx.yaml 
deployment.extensions/linux37-nginx-deployment created
service/linux37-nginx-service created

访问宿主机的30004端口,然后转发到pod的80端口.这个就表示是nginx的pod在k8s里跑起来了

修改haprox的信息

root@haproxy1:~# vim /etc/haproxy/haproxy.cfg 
listen linux37-nginx-80
  bind 192.168.200.248:80
  mode tcp
  server 192.168.200.198 192.168.200.198:30004 check fall 3 rise 3 inter 3s
  server 192.168.200.197 192.168.200.197:30004 check fall 3 rise 3 inter 3s

查看service的名称

root@master:/opt/k8s-data/yaml/web/linux37/nginx# kubectl get service -n linux37
NAME                          TYPE       CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE
linux37-nginx-service         NodePort   10.20.239.180   <none>        80:30004/TCP   21m
linux37-tomcat-app1-service   NodePort   10.20.188.42    <none>        80:30002/TCP   16h
linux37-tomcat-app2-service   NodePort   10.20.127.235   <none>        80:30003/TCP   4h37m

root@master:/opt/k8s-data/dockerfile/web/linux37/nginx# cat nginx.conf | grep ^[^#] | grep -v "#"
user  www;
worker_processes  auto;
daemon off;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
upstream  tomcat_webserver {
  server linux37-tomcat-app1-service.linux37.svc.linux37.local:80;
  server linux37-tomcat-app2-service.linux37.svc.linux37.local:80;
这个是server的dns 解析,端口是容器的端口
}
    server {
        listen       80;
        server_name  localhost;
        location / {
            root   html;
            index  index.html index.htm;
        }
        location /linux37 {
         root /data/nginx/html;
          index index.html;
        }
        location /app {
             proxy_pass  http://tomcat_webserver;
             proxy_set_header   Host    $host;
         proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
             proxy_set_header X-Real-IP $remote_addr;
        }
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}
打v2的标签
root@master:/opt/k8s-data/dockerfile/web/linux37/nginx# cat build-command.sh 
#!/bin/bash
TAG=$1
docker build -t   harbor.wyh.net/linux37/nginx:${TAG} .
docker push harbor.wyh.net/linux37/nginx:${TAG}
传递参数v2上传镜像
root@master:/opt/k8s-data/dockerfile/web/linux37/nginx# bash build-command.sh v2

root@master:/opt/k8s-data/yaml/web/linux37/nginx# vim nginx.yaml 
 20         image: harbor.wyh.net/linux37/nginx:v2
更换镜像
更新pod
root@master:/opt/k8s-data/yaml/web/linux37/nginx# kubectl apply -f nginx.yaml 
deployment.extensions/linux37-nginx-deployment configured
service/linux37-nginx-service unchanged
pod在哪个节点创建的就到哪个节点,看他的日志报错信息
修改文件之后改成v3
root@master:/opt/k8s-data/dockerfile/web/linux37/nginx# bash build-command.sh v3
修改为v3
root@master:/opt/k8s-data/yaml/web/linux37/nginx# vim nginx.yaml 
 20         image: harbor.wyh.net/linux37/nginx:v3

查看已经可以轮训调度到tomcat的8080端口了

image.png

3.实现nginx pod基于service name调用tom

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