docker-swarm容器固定到node节点启动
Docker-compose的编排 首先这里需要创建一个目录mkdir /docker-compose然后在里边创建一个docker-compose.yml的文件。 具体包括： Images、hostname、ports、networks、volumes、deploy这些内容 其中包括nginx+tomcat1+tomcat2三个服务 version: "3" 这是最新的版本 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： 一个标签【别名】 --label=host=node1 ： 主机名 --registry-mirror=http://e0d76b42.m.daocloud.io：国内的镜像 注：另外node2的服务器节点也需要修改 完成之后通过dockerstackdeploy-cdocker-compose.yml 【mynet：名字】 启动这个docker-compose编排文件 查看dockerservicelist 查看运行的节点 Nginx+tomcat1+tomcat2反向代理docker 实现上面的三个容器运行必须要有三个dockerfile写出来的启动镜像 Nginx： 这里使用的是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的镜像： 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的镜像和tomcat1的没有区别就是在index.Jsp文件有区别 完成之后开始生产成镜像 通过dockerbuild-t镜像 /路径 aa是nginx的镜像 完成之后需要去编写docker-compose.yml文件 内容如下 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 注：卷组一定要在最后标注，另外加红颜色的路径要创建才行 加绿色的表示申明的作用使用的卷组和网络 完成之后需要启动这个docker-compose文件 自己定义名字 当然删除的命令是 看一下起来的容器 前面说过tomcat2在woeker节点上工作 启动三个容器之后进行反向代理的配置 需要在nginx的主配置文件配置upstream，可以去卷组里面配置 手动添加 添加在卷组当中会自动和容器的数据同步，防止容器挂掉数据丢失 完成之后需要测试一下 反向代理测试： 注：如果有业务需要需要将docker-compose文件单独分开那么需要编写单独的文件，比如讲上面的分为三分，每一份都需要申明网络和卷组。当然使用同一个网络mynet的话，启动的容器之间还是可以互相同信得
