docker-swarm容器固定到node節點啟動
首先這裏需要創建一個目錄mkdir /docker-compose然後在裏邊創建一個docker-compose.yml的文件。
具體包括：
Images、hostname、ports、networks、volumes、deploy這些內容
其中包括nginx+tomcat1+tomcat2三個服務
version: "3" 這是最新的版本
services:
nginx:
image: nginx5:latest
hostname: nginx
ports:
- "8021:80"
networks:
- "mynet"
volumes:
- "/srv/jetsen/nginx:/nginx"
- "nginx://usr/local/nginx-1.6.2"
deploy:
placement:
constraints:
- engin.labels.function == nodeone
tomcat1:
image: tomcat15:latest
hostname: tomcat1
ports:
- "8088:8080"
networks:
- "mynet"
volumes:
- "/srv/jetsen/tomcat1:/tomcat1"
- "tomcat1jdk:/usr/local/jdk1.7.0_79"
- "tomcat1tomcat://usr/local/apache-tomcat-7.0.61/"
deploy:
placement:
constraints:
- engine.labels.function == nodeone
tomcat2:
image: tomcat15:latest
hostname: tomcat2
ports:
- "8089:8080"
networks:
- "mynet"
volumes:
- "/srv/jetsen/tomcat2:/tomcat2"
- "tomcat2jdk:/usr/local/jdk1.7.0_79"
- "tomcat2tomcat://usr/local/apache-tomcat-7.0.61/"
deploy:
placement:
constraints:
- engine.labels.function == nodetwo
volumes:
nginx:
tomcat1tomcat:
tomcat1jdk:
tomcat2tomcat:
tomcat2jdk:
networks:
mynet:
external: true
另外需要修改docker的主配置文件
--label=function=nodeone： 一個標簽【別名】
--label=host=node1 ： 主機名
--registry-mirror=http://e0d76b42.m.daocloud.io：國內的鏡像
註：另外node2的服務器節點也需要修改
完成之後通過docker stack deploy -c docker-compose.yml 【mynet：名字】
啟動這個docker-compose編排文件
查看docker service list
查看運行的節點
Nginx+tomcat1+tomcat2反向代理docker
實現上面的三個容器運行必須要有三個dockerfile寫出來的啟動鏡像
Nginx：
這裏使用的是nginx1.6.2版本
ENTRYPOINT /usr/local/nginx/sbin/nginx && tail -F /usr/local/nginx/logs/access.log
FROM docker.io/centos:7.2.1511
MAINTAINER LXF
RUN yum -y install gcc gcc-c++ kernel-headers dracut make auotmake autoconf libtool pcre pcre-devel zlib zlib-devel openssl openssl-devel
ADD ./nginx-1.6.2 /usr/local/nginx-1.6.2
RUN cd /usr/local/nginx-1.6.2 && ./configure --prefix=/usr/local/nginx --with-http_stub_status_module && make &&make install
EXPOSE 80
ENTRYPOINT /usr/local/nginx/sbin/nginx && tail -F /usr/local/nginx/logs/access.log
Tomcat1的鏡像：
Tomcat使用的是7版本
FROM docker.io/centos:7.2.1511
MAINTAINER LXF
RUN yum -y install gcc gcc- c++ make glibc kernel-headers tar glibc-common
ADD ./apache-tomcat-7.0.61 /usr/local/apache-tomcat-7.0.61
ADD ./jdk1.7.0_79 /usr/local/jdk1.7.0_79
ENV JAVA_HOME=/usr/local/jdk1.7.0_79
ENV PATH=$JAVA_HOME/bin:$PATH
FROM docker.io/centos:7.2.1511
MAINTAINER LXF
RUN yum -y install gcc gcc- c++ make glibc kernel-headers tar glibc-common
ADD ./apache-tomcat-7.0.61 /usr/local/apache-tomcat-7.0.61
ADD ./jdk1.7.0_79 /usr/local/jdk1.7.0_79
ENV JAVA_HOME=/usr/local/jdk1.7.0_79
ENV PATH=$JAVA_HOME/bin:$PATH
ENV CATALINA_HOME=/usr/local/apache-tomcat-7.0.61
ENV PATH=$JAVA_HOME/bin:$CATALINA_HOME/bin:$PATH
ADD ./server.xml /usr/local/apache-tomcat-7.0.61/conf/server.xml
RUN mkdir -p /web/webapp1
ADD index.jsp /web/webapp1/index.jsp
RUN chmod +x /usr/local/apache-tomcat-7.0.61/bin/*
EXPOSE 8080
ENTRYPOINT /usr/local/apache-tomcat-7.0.61/bin/startup.sh && tail -F /usr/local/apache-tomcat-7.0.61/logs/catalina.out
~
Tomcat2的鏡像和tomcat1的沒有區別就是在index.Jsp文件有區別
完成之後開始生產成鏡像 通過docker build -t 鏡像 /路徑
aa是nginx的鏡像
完成之後需要去編寫docker-compose.yml文件
內容如下
version: "3"
services:
tomcat1:
image: tomcat:1
hostname: tomcat1
expose:
- 8080
networks:
- "mynet"
volumes:
- "/srv/jetsen/tomcat1:/tomcat1"
- "tomcat1jdk:/usr/local/jdk1.7.0_79"
- "tomcat1tomcat://usr/local/apache-tomcat-7.0.61/"
deploy:
placement:
constraints:
- engine.labels.function == nodeone
tomcat2:
image: tomcat:2
hostname: tomcat2
expose:
- 8080
networks:
- "mynet"
volumes:
- "/srv/jetsen/tomcat2:/tomcat2"
- "tomcat2jdk:/usr/local/jdk1.7.0_79"
- "tomcat2tomcat://usr/local/apache-tomcat-7.0.61/"
deploy:
placement:
constraints:
- engine.labels.function == nodetwo
nginx:
image: aa:aa
hostname: nginx
ports:
- "8021:80"
networks:
- "mynet"
volumes:
- "/srv/jetsen/nginx:/nginx"
- "nginx1:/usr/local/nginx-1.6.2"
- "nginx2://usr/local/nginx"
deploy:
placement:
constraints:
- engine.labels.function == nodeone
volumes:
nginx:
nginx1:
nginx2:
tomcat1tomcat:
tomcat1jdk:
tomcat2tomcat:
tomcat2jdk:
networks:
mynet:
external: true
註：卷組一定要在最後標註，另外加紅顏色的路徑要創建才行 加綠色的表示申明的作用使用的卷組和網絡
完成之後需要啟動這個docker-compose文件
自己定義名字
當然刪除的命令是
看一下起來的容器
前面說過tomcat2在woeker節點上工作
啟動三個容器之後進行反向代理的配置
需要在nginx的主配置文件配置upstream，可以去卷組裏面配置
手動添加
添加在卷組當中會自動和容器的數據同步，防止容器掛掉數據丟失
完成之後需要測試一下
反向代理測試：
註：如果有業務需要需要將docker-compose文件單獨分開那麽需要編寫單獨的文件，比如講上面的分為三分，每一份都需要申明網絡和卷組。當然使用同一個網絡mynet的話，啟動的容器之間還是可以互相同信得
docker-swarm容器固定到node節點啟動