lnmp环境搭建（nginx负载配置）

1.安装nginx

yum install yum-priorities -y  
    wget http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm  
    rpm -ivh nginx-release-centos-7-0.el7.ngx.noarch.rpm  
    yum install nginx  
  

    systemctl start nginx.service #启动nginx  
    systemctl stop nginx.service #停止  
    systemctl restart nginx.service #重启  
    systemctl enable nginx.service #设置开机启动 

2.更改nginx端口号（根据自己需求）

    cd /etc/nginx/conf.d/  
    vim default.conf  
    把listen 80改成listen 81  

    systemctl restart nginx.service #重启nginx 

3.访问http://ip:81即可看到nginx首页

4.下一步安装php-fpm

    yum install php-fpm  

    systemctl start php-fpm.service #启动php-fpm  
    systemctl enable php-fpm.service #设置开机启动  

5.更改nginx配置文件识别php

vi /etc/nginx/conf.d/default.conf，把之前的#给去掉就可以了，顺手改一下fastcgi_param

    location ~ \.php$ {  
        root           html;  
        fastcgi_pass   127.0.0.1:9000;  
        fastcgi_index  index.php;  
        fastcgi_param  SCRIPT_FILENAME  /usr/share/nginx/html/$fastcgi_script_name;   //修改这里
        include        fastcgi_params;  
    }  

6.在 /usr/share/nginx/html中新建一个test.php  

访问http://ip:81/test.php即可看到nginx中的php页面

7.负载配置

upstream site{  
        server 172.16.170.138;  
        server 172.16.170.139;  
}  
server {  
    listen       80;  
    server_name  localhost;  
  
    #charset koi8-r;  
    #access_log  /var/log/nginx/log/host.access.log  main;  
  
    location / {  
        root   /usr/share/nginx/html;  
        index  index.html index.htm;  
        proxy_pass http://site;  
    }