restart

How to gracefully restart Nginx

Nginx FAQ: How do I gracefully restart Nginx?

On a Unix or Linux system, you can restart Nginx without having to manually stop it and start it by sending a HUP signal (a "hangup" signal) to the main Nginx process. So, if the process id happened to be 1234, you would issue this command:

kill -HUP 1234

The easy way to get the actual Nginx process id is by looking at the nginx.pid, which is kept in the Nginx log directory by default. On my server, the nginx.pid file is located here:

iptables restart tip - How to make your Linux iptables firewall automatically restart after a reboot

iptables restart FAQ: How do I make my iptables firewall start/restart after I reboot my Linux system?

I was going to write a tutorial about configuring a firewall on a Linux system using iptables, but then I found this great CentOS iptables tutorial, and I think they really nailed it.

The only thing I think they didn't fully cover is how you get your Linux iptables firewall to start up again properly after your Linux system is rebooted (which is kind of a huge deal). To that end, I thought I'd describe the process of getting your iptables firewall to restart after a system reboot.

And -- as an added bonus -- this same process will help you get any Linux service to automatically start after a reboot.

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