简单的负载均衡

1.规划和准备

三台相同配置的web用途IPMASTER192.168.0.249 BACKUP192.1680.250 192.168.0.251

用途IPMASTER192.168.0.249BACKUP192.168.0.250 192.168.0.251

为三台web 安装nginx，安装完成后启动nginx

3.使用masterWeb

cd /usr/local/nginx/confvi nginx.conf

在文件中添加红色字体的代码，就可以实现简单的负载均衡，但此做法会造成单点故障

upstream opslinux.com{        server 192.168.0.250:80;        server 192.168.0.251:80;}server    {        listen 80 default_server;        #listen [::]:80 default_server ipv6only=on;        server_name www.lnmp.org;        index index.html index.htm index.php;        root  /home/wwwroot/default;        #error_page   404   /404.html;        include enable-php.conf;        location / {         proxy_pass http://opslinux.com;        }        location /nginx_status        {            stub_status on;            access_log   off;        }        location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$        {            expires      30d;        }        location ~ .*\.(js|css)?$        {            expires      12h;        }        location ~ /\.        {            deny all;        }        access_log  /home/wwwlogs/access.log;    }

保存配置后，在浏览器中访问192.168.0.249，此时我们看到的是 192.168.0.250或者192.168.0.251的静态页面