| 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 |
环境
7
安装docker
移除旧版本docker
[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 images REPOSITORY 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]# ls nginx01 nginx02 nginx03 [root@chaols nginx]# ls nginx01/ && ls nginx02 && ls nginx03 conf.d fastcgi_params mime.types modules nginx.conf scgi_params uwsgi_params conf.d fastcgi_params mime.types modules nginx.conf scgi_params uwsgi_params conf.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
}
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 02020202020202 chao_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 nginx bf4a1a593e0908e383ade9f0b893a324e3f95cb251844c58a352f4d070ed253d [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 nginx 6177bb3461b8e8e912eacef161b3619d612e1e51136b324aacd6e888ec805b23 [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 nginx abbef89fc891d06de4b055a316eb11c4a938e2033b15ce1528acb858643df8fd
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 172.16.0.2 030303030303 [root@chaols ~]# curl 172.16.0.2 02020202020202 [root@chaols ~]# curl 172.16.0.2 030303030303 [root@chaols ~]# curl 172.16.0.2 02020202020202 [root@chaols ~]# curl 172.16.0.2 030303030303 [root@chaols ~]# curl 172.16.0.2 02020202020202 [root@chaols ~]# curl 172.16.0.2 030303030303 [root@chaols ~]# curl 172.16.0.2 02020202020202