After upgrade of Ubuntu OS 20x to 22x capacity errors on virutalmin domains

System hostname matthew… Operating system Ubuntu Linux 22.04.2
Webmin version 2.021 Usermin version 1.861
Virtualmin version 7.7 Pro Authentic theme version 20.21
Time on system Wednesday, July 26, 2023 3:21 PM Kernel and CPU Linux 5.15.0-78-generic on x86_64
Processor information Intel(R) Xeon(R) CPU X5650 @ 2.67GHz, 24 cores CPU temperatures Core 1: 30°CCore 2: 36°CCore 3: 37°CCore 9: 37°CCore 10: 38°CCore 11: 35°CCore 1: 40°CCore 2: 39°CCore 3: 40°CCore 9: 32°CCore 10: 40°CCore 11: 39°C
System uptime 32 minutes Running processes 335
CPU load averages 0.35 (1 min) 0.24 (5 mins) 0.20 (15 mins) Real memory 2.21 GiB used / 981.89 MiB cached / 62.87 GiB total
Virtual memory 0 bytes used / 7.99 GiB total Local disk space 22.49 GiB used / 77.27 GiB free / 99.77 GiB total
Package updates All installed packages are up to date

Stats History

This is my apache error_file picture.

I have 5 domains that was working on previous OS ubuntu version. Now 3 of them have this error:

Service Unavailable

The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.

the other 2 domains work okay…

Here is what is happening with Apache… my error file

[Wed Jul 26 15:30:17.338139 2023] [proxy_fcgi:error] [pid 1889:tid 140439709537856] [client 23.29.117.20:50988] AH01079: failed to make connection to backend: httpd-UDS
[Wed Jul 26 15:30:17.435448 2023] [proxy:error] [pid 1889:tid 140440086218304] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /var/php-fpm/168944981673940.sock () failed
[Wed Jul 26 15:30:17.435470 2023] [proxy_fcgi:error] [pid 1889:tid 140440086218304] [client 23.29.117.20:57696] AH01079: failed to make connection to backend: httpd-UDS
[Wed Jul 26 15:30:17.444222 2023] [proxy:error] [pid 1890:tid 140439030056512] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /var/php-fpm/168944981673940.sock (
) failed
[Wed Jul 26 15:30:17.444249 2023] [proxy_fcgi:error] [pid 1890:tid 140439030056512] [client 173.243.124.110:18418] AH01079: failed to make connection to backend: httpd-UDS
[Wed Jul 26 15:30:17.962913 2023] [proxy:error] [pid 1890:tid 140438426076736] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /var/php-fpm/168944981673940.sock () failed
[Wed Jul 26 15:30:17.962938 2023] [proxy_fcgi:error] [pid 1890:tid 140438426076736] [client 209.249.147.72:52520] AH01079: failed to make connection to backend: httpd-UDS
[Wed Jul 26 15:30:18.063786 2023] [proxy:error] [pid 1890:tid 140440086218304] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /var/php-fpm/168944981673940.sock (
) failed
[Wed Jul 26 15:30:18.063811 2023] [proxy_fcgi:error] [pid 1890:tid 140440086218304] [client 209.249.147.72:17136] AH01079: failed to make connection to backend: httpd-UDS
[Wed Jul 26 15:30:28.179492 2023] [proxy:error] [pid 1889:tid 140438946162240] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /var/php-fpm/168944981673940.sock (*) failed
[Wed Jul 26 15:30:28.179528 2023] [proxy_fcgi:error] [pid 1889:tid 140438946162240] [client 100.69.243.40:17804] AH01079: failed to make connection to backend: httpd-UDS

OK, this looks like PHP-FPM service isn’t running, or it’s trying to communicate with the wrong one.

Did you run Re-Check Configuration after you upgraded your system? You have to do that because the versions of everything changed.

Check the status of php-fpm service (possibly other similarly name services if you have installed other PHP versions).

And, probably want to restart it just to be sure it’s in a happy state, or will give us some errors we can work with.

systemctl restart php-fpm

If the problem persists, check Validate Virtual Servers for any clues.

1 Like

okay. checking now

Now I am getting this error for php info

Failed to connect to 208.104.147.195:443 : Connection refused

port 443 ??? the 195 is my correct server ip addr

Answer:
Your Apache is not listening on port 443. You configured your VirtualHost only for HTTP, not fot HTTPS. Configure a second VirtualHost with Port 443 and your certificates and make sure you have a Listen 443 directive in your Apache config. Your certificates don’t belong in the :80 VirtualHost.

The above was based on wrong information in the question. Whatever you did in the meantime, your server is now rechable via HTTPS.

by the way… all my users from old server .194 are now finally showing up okay. I don’t understand the delay, unless it was a CRON job that imported them into the new server.

These issues have now been resolved for this version of OS only.

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