dotcomUNDERGROUND 0 Posted April 1, 2020 My WHMCS is suddenly giving 503 Service Unavailable error. Both the admin and front end. I have not made any changes to WHMCS or the server. I created a test php file and that loads fine. Its on a cpanel server running cloudlinux. There is no LVE error for the site. Any suggestions on how I can troubleshoot the issue? 0 Quote Share this post Link to post Share on other sites
Damo 9 Posted April 1, 2020 A 503 is resource limits and would be CL. There must be something showing as a fault in CL. What are the limits set on this account? 0 Quote Share this post Link to post Share on other sites
dotcomUNDERGROUND 0 Posted April 1, 2020 44 minutes ago, Damo said: A 503 is resource limits and would be CL. There must be something showing as a fault in CL. What are the limits set on this account? Thank you for your reply. I have checked the CL history and it does not show any fault. I have also updated cage fs structure and tried applying the "do not limit" setting. My limits are: SPEED 600% VMEM 0 PMEM 10G IO 10MB/s IOPS 10240 EP 500 NPROC 1000 Note that I can run a newly created php page with phpinfo() without any issue. 0 Quote Share this post Link to post Share on other sites
dotcomUNDERGROUND 0 Posted April 1, 2020 I tried switching off php-fpm for the domain and its working fine now. Any reason for this behavior? Specially when I have not changed any setting or made any upgrade? 0 Quote Share this post Link to post Share on other sites
Xhale1 0 Posted April 2, 2020 Same issue here. No CloudLinux, just cPanel and LiteSpeed. No server changes and then today I'm getting a 503 error. I think it's related to an update to EasyApache 4? 0 Quote Share this post Link to post Share on other sites
nguoiveday 0 Posted July 10, 2020 After successfully installing the version whmcs-v7.9.1, you can access the admin page but the external homepage cannot access and report an error: 503 Service Unavailable The server is temporarily busy, try again later! Thanks to you for guidance on how to fix it. Thank you very much! 0 Quote Share this post Link to post Share on other sites
Mil1ler 0 Posted August 18, 2020 I am also having this issue, does someone have any solution for this? kindly share your views, thanks in advance. 0 Quote Share this post Link to post Share on other sites
TorabRamin 0 Posted August 26, 2020 I'm facing same issue. 😞 0 Quote Share this post Link to post Share on other sites
GDW 0 Posted October 3, 2020 Same problem with sudden 503 error when accessing the login page for WHMCS. Please help! 0 Quote Share this post Link to post Share on other sites