Nginx启动与停止

参考：https://www.phusionpassenger.com/library/install/nginx/install/oss/rubygems_rvm/

Starting Nginx

You can start Nginx by running:

Copy$ sudo /opt/nginx/sbin/nginx
Shutting down Nginx

You can shut down Nginx by killing its PID with the kill command. To find out what Nginx's PID is, use the ps command. For example:

Copy$ ps auxw | grep nginx
root          ?        S    Jan01   : nginx: master process /opt/nginx/sbin/nginx
www-data      ?        S    Jan01   : nginx: worker process
Here we see that the Nginx master process has PID  (you can ignore the worker process), so we run:

Copy$ sudo kill 25817
Having to perform two steps is a bit cumbersome. Luckily, there is an easier way to do this. By default, Nginx creates a PID file in /opt/nginx/logs/nginx.pid. This PID file contains Nginx's current PID. So we can use a single command to shutdown Nginx:

Copy$ sudo kill $(cat /opt/nginx/logs/nginx.pid)
Restarting Nginx

Restarting Nginx is the same as shutting down Nginx, and starting it again. For example:

Copy$ sudo kill $(cat /opt/nginx/logs/nginx.pid)
$ sudo /opt/nginx/sbin/nginx