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502 Bad Gateway & 504 Gateway Timeout issue after MU30

icecold

New Pleskian
After installing MU30, I can no longer access my control panel. Domains are working fine, so this issue only applies to the panel itself.

I tried all the KBs related to this issue and none have solved it. Except it switches between Bad Gateway and Gateway Timeout.

I see the following in the sw-cp-server error_log:
2015/01/12 16:17:58 [error] 24208#0: *27 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 10.0.0.2, server: , request: "GET /login.php3 HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock", host: "www.host.com:8443"


I changed the buffer and timeout values as proposed is some KBs and posts. I reinstalled the patch using the autoinstaller. The bootstrapper repair option seems to be "hanging" after:

Started bootstrapper repair procedure. This may take a while.
Certain actions may be skipped if not applicable.

-- Warning: Skipping the data of table mysql.event. Specify the --events option explicitly.
Finishing up upgrade procedures and rerunning previously failed upgrade actions...
===> Cumulative APS controller database (apsc) upgrade and repair has been started.
===> Cumulative upgrade and repair of APS controller database has been completed.


At this stage I have no idea how to solve this.

I noticed that after the MU30, the following change was made to /etc/sw-cp-server/config

error_page 497 https://$hostname:$server_port$request_uri;

However, disabling this, does not solve it either.

Plesk 12.0.18 on CentOS release 5.11 (Final)
 
To be clear, it loads the first page (blank page with redirect to login.php3):

....<body onLoad=";top.location='/login.php3';">....

So the error is with login.php3.
 
In case when KB not helps I can only recommend to create a request to support team to do in-depth investigation to find the reason and to fix it. Please create a ticket to support at https://odin.com/hcap/support/request/ .
You may have free support, please check what kind of Plesk license you use for available support options at http://kb.odin.com/en/121580 .
If there’s no free support in your case, you can order Plesk per-incident support at http://odin.com/hcap/support/buy-support/. Support team will contact you as soon as purchase is processed, and they will do the best to resolve it.
If it is found that your problem was caused by product bug w/o available solution or workaround from Parallels, then your purchase will be re-funded.
 
I decided to go for the last resort and reboot. This fixed the problem. However I'm not happy about this as I leaves me clueless what caused the issue and how it could be resolved without rebooting the server.
 
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