Install nginx

RHEL/CentOS
Install the prerequisites:

sudo yum install yum-utils

To set up the yum repository, create the file named /etc/yum.repos.d/nginx.repo with the following contents:

vi /etc/yum.repos.d/nginx.repo

[nginx-stable]
name=nginx stable repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=1
enabled=1
gpgkey=https://nginx.org/keys/nginx_signing.key
module_hotfixes=true

[nginx-mainline]
name=nginx mainline repo
baseurl=http://nginx.org/packages/mainline/centos/$releasever/$basearch/
gpgcheck=1
enabled=0
gpgkey=https://nginx.org/keys/nginx_signing.key
module_hotfixes=true

By default, the repository for stable nginx packages is used. If you would like to use mainline nginx packages, run the following command:

sudo yum-config-manager --enable nginx-mainline

To install nginx, run the following command:

sudo yum install nginx

When prompted to accept the GPG key, verify that the fingerprint matches 573B FD6B 3D8F BC64 1079 A6AB ABF5 BD82 7BD9 BF62, and if so, accept it.

cd /etc/nginx/conf.d
vi default.conf
或者
vi /etc/nginx/nginx.conf

server {
    listen       81;
    server_name  localhost;

    location / {
        root   /data/wwwroot/m.xxx.com;
        index  index.html index.htm;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}

启动：
 service nginx start

启动nginx:
nginx -c /path/to/nginx.conf

关闭nginx：
nginx -s stop  :快速停止nginx  
         quit  ：完整有序的停止nginx

重启nginx：
nginx -s reload  ：修改配置后重新加载生效  
nginx -s reopen  ：重新打开日志文件  
nginx -t -c /path/to/nginx.conf 测试nginx配置文件是否正确


其他的停止nginx 方式：
ps -ef | grep nginx

kill -QUIT 主进程号     ：从容停止Nginx  
kill -TERM 主进程号     ：快速停止Nginx  
pkill -9 nginx          ：强制停止Nginx

平滑重启nginx：
kill -HUP 主进程号

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