# Running code in nginx's master process **URL:** \ **Category:** NGINX\ **Created:** [October 22, 2013, 2:27am UTC](https://www.ruby-forum.com/t/running-code-in-nginxs-master-process/246469 "2013-10-22T02:27:51Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Sadaf\_N](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Post date:** [October 22, 2013, 2:27am UTC](https://www.ruby-forum.com/t/running-code-in-nginxs-master-process/246469/1 "2013-10-22T02:27:51Z")
Is it possible to have a module run code in nginx’s master process, i.e. not in a worker process? I know init\_master is just a stub for now. Are there any chances this gets implemented in the near future? Thanks in advance, Marcelo. Posted at Nginx Forum: > **[Running code in nginx's master process](https://forum.nginx.org/read.php?2,243942,243942#msg-243942)** > > Is it possible to have a module run code in nginx's master process, i.e. not in a worker process? I know init\_master is just a stub for now. Are there any chances this gets implemented in the near future? Thanks in advance, Marcelo. ---
**Author:** ![mzabani](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c68b51/32.png) [@mzabani](https://www.ruby-forum.com/u/mzabani)\ **Post date:** [October 22, 2013, 2:03pm UTC](https://www.ruby-forum.com/t/running-code-in-nginxs-master-process/246469/2 "2013-10-22T14:03:19Z")
Hello! On Mon, Oct 21, 2013 at 08:27:01PM -0400, mzabani wrote: > Is it possible to have a module run code in nginx’s master process, i.e. not > in a worker process? > I know init\_master is just a stub for now. Are there any chances this gets > implemented in the near future? I wouldn’t recommend running a code in master process, but if you have to for some reason, you may try using init\_module callback. – Maxim D. > **[nginx: donation](http://nginx.org/en/donation.html)** ---
**Author:** ![mzabani](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c68b51/32.png) [@mzabani](https://www.ruby-forum.com/u/mzabani)\ **Post date:** [October 24, 2013, 2:38pm UTC](https://www.ruby-forum.com/t/running-code-in-nginxs-master-process/246469/3 "2013-10-24T14:38:05Z")
It seems like the init\_module callback is not executed in nginx’s master process. At least, I’ve printed a call to getpid() and the pid returned was that of a process that wasn’t running, which makes me think it is executed in a process that forks the master process itself. Posted at Nginx Forum: > **[Re: Running code in nginx's master process](https://forum.nginx.org/read.php?2,243942,244069#msg-244069)** > > Is it possible to have a module run code in nginx's master process, i.e. not in a worker process? I know init\_master is just a stub for now. Are there any chances this gets implemented in the near future? Thanks in advance, Marcelo. ---
**Author:** ![mzabani](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c68b51/32.png) [@mzabani](https://www.ruby-forum.com/u/mzabani)\ **Post date:** [October 24, 2013, 6:50pm UTC](https://www.ruby-forum.com/t/running-code-in-nginxs-master-process/246469/4 "2013-10-24T18:50:02Z")
Hello! On Thu, Oct 24, 2013 at 08:37:03AM -0400, mzabani wrote: > It seems like the init\_module callback is not executed in nginx’s master > process. At least, I’ve printed a call to getpid() and the pid returned was > that of a process that wasn’t running, which makes me think it is executed > in a process that forks the master process itself. Yes, the init\_module callback is called after configuration parsing, and on initial startup this happens before demonization, hence there is no master process yet. On reconfiguration it’s executed in the master process itself. – Maxim D. > **[nginx: donation](http://nginx.org/en/donation.html)**