On our development servers, we allow multiple developers access to the server to git pull their changes. Normally this requires running sudo systemctl reload php-fpm (or sending USR2, etc.). However, we want to allow them to reload the changed code in PHP-FPM without needing sudo.
Way back when when I used to use Ruby, you could do exactly what I'm looking for by touching a file named restart.txt in the tmp directory.
Does PHP-FPM support anything like that? Alternatively, is there anyway to allow the reload command (or any similar method of sending a USR2) without sudo?
You'll probably be there when whitelisting the command in your /etc/sudoers file:
Start by editing the sudoers file:
sudo visudo
Add the following config line:
user ALL=(root) NOPASSWD: systemctl reload php-fpm
Replace user (at the beginning of the line) with the real username, for whom the command is executed.
This will privilege the user to call sudo systemctl reload php-fpm being executed as root (without password).