Docker 是一个用于开发，交付和运行应用程序的开放平台。Docker 使您能够将应用程序与基础架构分开，从而可以快速交付软件。今天来为大家演示一下docker部署nginx负载均衡集群。

centos7

移除旧版本docker

(资料图片仅供参考)

[root@chaols ~]#  sudo yum remove docker \>                   docker-client \>                   docker-client-latest \>                   docker-common \>                   docker-latest \>                   docker-latest-logrotate \>                   docker-logrotate \>                   docker-engine

安装yum-utils包并设置稳定存储库

[root@chaols ~]# yum install -y yum-utils

安装docker

[root@chaols ~]# yum install docker-ce docker-ce-cli containerd.io

启动docker

[root@chaols ~]# systemctl start docker

查看docker镜像

刚刚安装docker是没有镜像的

[root@chaols ~]# docker imagesREPOSITORY   TAG       IMAGE ID   CREATED   SIZE

下载nginx镜像

[root@chaols ~]# docker pull nginx

本地创建3个nginx目录

[root@chaols nginx]# pwd/home/nginx[root@chaols nginx]# lsnginx01  nginx02  nginx03[root@chaols nginx]# ls nginx01/ && ls nginx02 && ls nginx03conf.d  fastcgi_params  mime.types  modules  nginx.conf  scgi_params  uwsgi_paramsconf.d  fastcgi_params  mime.types  modules  nginx.conf  scgi_params  uwsgi_paramsconf.d  fastcgi_params  mime.types  modules  nginx.conf  scgi_params  uwsgi_params

创建网络

docker network create --driver bridge --subnet 172.16.0.0/16 --gateway 172.16.0.1 mynet

chao_nginx01配置文件

[root@chaols ~]# cat /home/nginx/nginx01/conf.d/default.conf upstream chao_test {         server 172.16.0.2 weight=5;        server 172.16.0.3 weight=5;} 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;        proxy_pass http://chao_test;    }

chao_nginx02、chao_nginx03配置文件相同

[root@chaols ~]# cat /home/nginx/nginx02/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;    }

配置页面展示

chao_nginx02

[root@chaols ~]# cat /home/html02/index.html 02020202020202chao_nginx03[root@chaols ~]# cat /home/html03/index.html 030303030303

创建虚拟机

-d 后台运行 --name 指定名字 --net 指定刚刚创建的网络 -p 指定宿主机的映射端口 -v 指定和宿主机共享的目录 nginx 镜像名称

[root@chaols ~]# docker run  -d --name chao_nginx01 --net mynet -p 8001:80 -v /home/nginx/nginx01:/etc/nginx -v /home/html01/:/usr/share/nginx/html nginxbf4a1a593e0908e383ade9f0b893a324e3f95cb251844c58a352f4d070ed253d[root@chaols ~]# docker run  -d --name chao_nginx02 --net mynet -p 8002:80 -v /home/nginx/nginx02:/etc/nginx -v /home/html02/:/usr/share/nginx/html nginx6177bb3461b8e8e912eacef161b3619d612e1e51136b324aacd6e888ec805b23[root@chaols ~]# docker run  -d --name chao_nginx03 --net mynet -p 8003:80 -v /home/nginx/nginx03:/etc/nginx -v /home/html03/:/usr/share/nginx/html nginxabbef89fc891d06de4b055a316eb11c4a938e2033b15ce1528acb858643df8fd

验证

访问chao_nginx01：172.16.0.2循环显示chao_nginx02：172.16.0.3、chao_nginx03：172.16.0.4的页面

[root@chaols ~]# curl 172.16.0.2030303030303[root@chaols ~]# curl 172.16.0.202020202020202[root@chaols ~]# curl 172.16.0.2030303030303[root@chaols ~]# curl 172.16.0.202020202020202[root@chaols ~]# curl 172.16.0.2030303030303[root@chaols ~]# curl 172.16.0.202020202020202[root@chaols ~]# curl 172.16.0.2030303030303[root@chaols ~]# curl 172.16.0.202020202020202

关键词： 配置文件 负载均衡 应用程序 循环显示 开放平台