一、查看CentOS的版本

cat /etc/redhat-release

二、添加资源库

在 CentOS 系统上安装 Nginx ，得先去添加一个资源库：

vim /etc/yum.repos.d/nginx.repo
  [nginx]
  name=nginx repo
  baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
  gpgcheck=0
  enabled=1

三、安装nginx

yum -y install nginx

四、测试nginx配置文件是否正确

nginx -t

打印如下：

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

五、CentOS7.0+ nginx实现停止、启动、重启

systemctl stop nginx.service  
systemctl start nginx.service
systemctl restart nginx.service
systemctl status nginx.service

开机自启：

systemctl enable nginx.service

取消开机自启：

systemctl disable nginx.service

六、nginx.conf配置示例

我的配置：

user nginx;
worker_processes 4;

error_log /var/log/nginx/error.log warn;
pid    /var/run/nginx.pid;


events {
  worker_connections 1024;
}


http {
  include    /etc/nginx/mime.types;
  default_type application/octet-stream;

  log_format main '$remote_addr - $remote_user [$time_local] "$request" '
           '$status $body_bytes_sent "$http_referer" '
           '"$http_user_agent" "$http_x_forwarded_for"';

  access_log /var/log/nginx/access.log main;

  sendfile    on;
  #tcp_nopush   on;

  keepalive_timeout 65;

  #gzip on;

  include /etc/nginx/conf.d/*.conf;

  #设定负载均衡的服务器列表
  upstream pay_server {
    ip_hash;
    server 10.74.248.01:8088 max_fails=2 fail_timeout=2;
    server 10.74.248.02:8088 max_fails=2 fail_timeout=2;
  }

  upstream print_server {
    ip_hash;
    server 10.74.248.03:2001 max_fails=2 fail_timeout=2;
    server 10.74.248.04:2001 max_fails=2 fail_timeout=2;
  }

  upstream accss_door_server {
    ip_hash;
    server 10.74.248.05:2002 max_fails=2 fail_timeout=2;
    server 10.74.248.06:2002 max_fails=2 fail_timeout=2;
  }
  
  server {
    listen 80;
    server_name wab.kupu.ccoop.com.cn;
    location /invengo {
         proxy_pass http://pay_server;
         index index.jsp index.html index.htm;
    }
    location /invengo/epc {
         proxy_pass http://print_server;
         index index.jsp index.html index.htm;
    }
    location /invengo/print {
         proxy_pass http://print_server;
         index index.jsp index.html index.htm;
    }

    location /checkout {
         proxy_pass http://accss_door_server;
         index index.jsp index.html index.htm;
    }
    location /asset {
         proxy_pass http://accss_door_server;
         index index.jsp index.html index.htm;
    }
  }