Install nginx on CentOS 7

1. Preparation

Nginx的安装依赖以下文件：

    1.1、安装gcc:     yum install gcc-c++
    1.2 、安装PCRE pcre-devel:    yum install -y pcre pcre-devel
    1.3 、安装zlib:    yum install -y zlib zlib-devel
    1.4、安装OpenSSL:    yum install -y openssl openssl-devel

2. Download nginx

        http://nginx.org/en/download.html

3. Unzip to the installation directory

     [root@ou Downloads]# tar -xzvf nginx-1.12.2.tar.gz -C /opt

4. Configuration

     [root@ou nginx-1.12.2]# ./configure

The default generation configuration information is as follows

      nginx path prefix: "/usr/local/nginx"
      nginx binary file: "/usr/local/nginx/sbin/nginx"
      nginx modules path: "/usr/local/nginx/modules"
      nginx configuration prefix: "/usr/local/nginx/conf"
      nginx configuration file: "/usr/local/nginx/conf/nginx.conf"
      nginx pid file: "/usr/local/nginx/logs/nginx.pid"
      nginx error log file: "/usr/local/nginx/logs/error.log"
      nginx http access log file: "/usr/local/nginx/logs/access.log"
      nginx http client request body temporary files: "client_body_temp"
      nginx http proxy temporary files: "proxy_temp"
      nginx http fastcgi temporary files: "fastcgi_temp"
      nginx http uwsgi temporary files: "uwsgi_temp"
      nginx http scgi temporary files: "scgi_temp"

5. Compile and install

    [root@ou nginx-1.12.2]# make
    [root@ou nginx-1.12.2]# make install

6. Confirm the nginx installation path

    [root@ou nginx-1.12.2]# whereis nginx
    nginx: /usr/local/nginx

7. Start and stop nginx

    cd /usr/local/nginx/sbin/
    ./nginx 
    ./nginx -s stop
    ./nginx -s quit
    ./nginx -s reload
    ./nginx -s quit:此方式停止步骤是待nginx进程处理任务完毕进行停止。
    ./nginx -s stop:此方式相当于先查出nginx进程id再使用kill命令强制杀掉进程。
浏览器打开localhost即可访问

8. Query the nginx process:

    ps aux|grep nginx

9. Restart ngixn

9.1、先停止再启动（推荐）：

           对 nginx 进行重启相当于先停止再启动，即先执行停止命令再执行启动命令。如下：
            ./nginx -s quit
            ./nginx

9.2、重新加载配置文件：

        当 ngin x的配置文件 nginx.conf 修改后，要想让配置生效需要重启 nginx，使用-s reload不用先停止             
        ngin x再启动 nginx 即可将配置信息在 nginx 中生效，如下：
        ./nginx -s reload

Install nginx on CentOS 7

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