nginx 负载均衡
任意选择3台centos系统的服务器(可以任意选择几台都可以),我的是1台centos7,2台centos6的
负载均衡端:192.168.153.171
web端:192.168.153.128 / 129
1.关闭所有服务器的防火墙以及selinux。
centos7的操作 systemctl stop firewalld setenforce 0 centos6的操作 service iptables stop setenforce 0
2.看看有没有正在运行的80端口
netstat -ntlp |grep 80 如果有其它应用,请先kill掉,要保证80端口不能被占用
3.下载或者源码安装nginx
我的centos7是yum安装 yum -y install epel-* yum -y install nginx centos6是源码安装 首先安装所需要的依赖环境 yum -y install gcc gcc-c++ pcre-devel zlib-devel lrzsz rz 所需要的源码包( lrzsz 应用命令rz是上传,sz是下载 ) 这时我们的目录中已经有未被解压的源码包了 tar zxf nginx-1.16.1.tar.gz cd nginx-1.16.1 ./configure && make && make install
4.在web端新建测试页面
vim /usr/local/nginx/html/index.html <h1>web 1/2 128 / 129</h1> <!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> <style> body { width: 35em; margin: 0 auto; font-family: Tahoma, Verdana, Arial, sans-serif; } </style> </head> <body> <h1>Welcome to nginx!</h1> <p>If you see this page, the nginx web server is successfully installed and working. Further configuration is required.</p> <p>For online documentation and support please refer to <a href="http://nginx.org/">nginx.org</a>.<br/> Commercial support is available at <a href="http://nginx.com/">nginx.com</a>.</p> <p><em>Thank you for using nginx.</em></p> </body> </html>
5.配置负载均衡端的配置文件
因为是yum安装所以它的配置文件在/etc下 vim /etc/nginx/nginx.conf 在http{}里面写 http{ ~~~ upstream webs { server 192.168.153.128:80 weight=1; server 192.168.153.129:80 weight=3; } server { location / { proxy_pass http://webs; } } } 以上为nginx的负载均衡轮询反向代理
6.启动所有服务器的nginx服务
centos7的操作 systemctl start nginx systemctl enable nginx centos6的操作 service nginx start
7.效果展示
因为是1:3轮询模式所以会展示出1个128页面,3个129页面
相信自己,只要努力,不惧困难,定会成功
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