Here is how to run server.sh from PHP
Disclaimer: This approach is NOT recommended by the ISPConfig developers - as reiterated by Till in many a post. You should only do this in very specific scenarios. I believe that this approach still has its merits however, so I've decided to share my findings in solving this problem with you all.
Server.sh is the shell script that runs server.php which updates all the ISPConfig configuration and does all the useful stuff which happens after you create a client, website, ftp user etc. etc.
Usually server.sh is run by a cron job, as root, every minute
When to use this approach:
We decided to manually invoke server.sh after having used the remoting functions in ISPConfig as we had 2 issues we wanted to solve:
1) Our system setup was time-critical - That is, we wanted ISPConfig to create directories, FTP/DB users immediatly after having called the remoting functions
2) We wanted to avoid creating an extension, if possible, as we wanted to be able to rapidly deploy our system on new servers - and having to mess about with ISPConfig internals and customizing ISPConfig would slow down our deployment process.
As Till has mentioned then the primary issue with our approach is:
If you have all the potential pitfalls in mind, and still want to run server.sh manually from apache, then here is how to do it. Basically the solution rests in the fact that you can take advantage of the setuid and setgid bits to run a c executable as root. This has been the major stumbling block in running server.sh from apache - as if it isn't run as root, nothing will work (no directories will be created etc. etc. - as the script doesn't run with the appropriate privileges). So what we do is create a c executable which then in turn invokes server.sh
First, the PHP code which runs our custom c executable (which we will create a bit later):
Anyhoo - now the critical part: The c executable where all the magic happens
So, we solved this by creating a new cronjob which is run every minute and invoked like so:
The reference you see to "lockfile" in the above code is just a dummy file which gets copied to .sitekick_lock - which the cron job then looks for to determine whether apache needs a restart.
In addition to this, we had to tweak a bit in the ISPConfig code to stop it from restarting apache when it has done its job. We just added a single line (return 0; ) to the function restartHttpd in server/mods-available/web_module.inc.php (around line 130)
I would be very interested to see if somebody who had another setup were to try the above code - and just removed all the lockfile / manual restart whatnot and see if the same thing happens for them. Because - well as this approach works then the whole apache restart issue makes it slightly messy - and some of the benefit of this approach - which is not altering any ISPConfig files gets slightly lost as we need to do that tweak to web_module.inc.php
Anyhoo - That's my story - Hope this helps someone, and maybe this can spark a discussion on how silly I am in doing all this and that there is a much better approach available (Here's hoping - haha)
If I understand your explanation correctly, you have to restart apache with a one minute cronjob. So your changes get applied after about one minute. Thats the same time that the normal ispconfig system takes to apply the changes, so I dont see the real benefit in the time to get changes applied.
If you want to get changes applied faster, then the approach that was used in ispconfig 2 might be a good choice.
1) Comment out the server.sh root cronjob.
2) create a bash script, e.g. /usr/local/bin/ispconfig_server.sh with the following content:
So if you want to start an update from the ispconfig interface then, you just execute this php command:
This variant is only usable on single server systems, thats why we dont use it in ispconfig 3.
Thank you for that nice reply and an excellent new approach - I will certainly give it a go as this would probably be a lot cleaner than what I am doing now.
However, one question - The .run file which tells the bash script (ispconfig_server.sh) to invoke server.php - this gets created by ISPConfig whenever an update to its config has been made? You didn't remove this in ISPConfig 3 even though this approach has been deprecated?
Just making sure :)
PS: The reason for all this was that it was critical that directories etc. got created ASAP so we could set up our system files immediatly and update databases etc. - That is, a complete setup of the systems. Accessibility to the site was of a secondary concern - so it was OK that apache got restarted a minute later - as at that point everything was ready to go. With the other approach, the user risked having to wait up to 2 minutes+ for everything to finish (And we don't like to keep people waiting, looking at a spinner ;) ) - Now everything is all set up in 30 seconds or less, typically.
With your new/old approach then +10 seconds is AOK by us, and should solve our problems :)
I have now spent the day implementing Till's approach and it works like a beaut.
What I've done is create a cron job which runs a small PHP file which checks whether the bash script Till posted is running, and if not starts it. This is to ensure that it always is active (even after a reboot) - I guess you could add it to /etc/init.d but I didn't want to bother with that.
This is my PHP cron job:
I did not disable the "regular" server.sh cron job, as I saw no reason to. I still want things to work as usual in ISPConfig if we set up a client/vhost manually in the ISPConfig back-end.
All Till's bash script really does is just wait for .run to be touched/created and then do the update. I modded it slightly so that it only waits 5 seconds between each check. I can't see that this tweak should have any detrimental effect.
I still use my elevated rights executable as posted in the original post - but now its job has changed to:
1) touch .run (you need to be root to do this, so it's a problem from apache)
2) Run all my post ISPConfig update actions as root - I changed this to all be located in a custom PHP file which is run by my elevated rights executable - for easier maintenance
Anyway - Here's a happy man signing off as everything is working as it should :)
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