I decided to reinstall my box's PHP and Apache today to give FPM a go, never used it before and wanted to do some performance tests as I've heard it is a lot faster. Right after compiling and installing PHP with FPM support, of course, the first thing was to look at the configuration and I found that it is by default set to run under nobody / nobody. The problem is I have quite a few virtual servers set up and their files' access is limited to the apache / apache user and group. So here are a few questions that come to my mind:
- Why is PHP-FPM run by default under nobody / nobody ?
- Can I change this?
- Should I change it?
- Is it considered a security risk to run PHP-FPM and Apache under the same user/group? If so, why?
- What other risks/considerations should I bare in mind about running under different user and under the same user as Apache?
Note: I am using PHP 5.6.16 and Apache 2.4.16 if it matters.