DHCP service is stuck
Hi all, i was updating dhcp settings on web console when suddenly i got 504 Gateway Time-out error. After couple of retries and refreshes any of the web console pages are resulting in the same 504 Gateway Time-out.
I decided to reboot the box but it failed to boot properly. The boot process was stuck on "Starting DHCP service" message.
The only solution i was able to find is to go directly into /cf/config.xml file and disable the DHCP service (by changing <enabled> xml tag to <disabled>).
After the config.xml change, the box was able to complete the startup procedure but of course DHCP server was disabled.
At this stage, i went to web console and clicked the "enable service" checkbox. i was able to save the change and DHCP server started.
I thought that my problem is solved (somehow) but unfortunately any new change on web-console causes the 504 Gateway Time-out again.
After googling for some time and looking on web console php files, i found out that my problem is probably due to :
1 - php-fm process that actually updates the configuration is stuck(this is why my web console eventually dies. it has no more free php-fm processes to process requests)
2 - probably php-fm process is stuck waiting on "config" lock
3 - removing "/tmp/config.lock" and "/etc/rc.php-fpm_restart" doesn't help. web console updates for dchp service are still timing out.
My knowledge of PHP is almost none and i have no clue on how to fix it.
Appreciate any help.
Thank you all!
What option changes did you make that caused it to fail?
How many interfaces do you have on this firewall? How many VLANs?