Issue Debian 13: Apache Issues

[Daveo]

Server operating system version

Debian 13.02

Plesk version and microupdate number

18.0.74 #1

I'm running a fresh install of Debian 13 with Plesk on my local server

I restored a full server Plesk backup.

All sites that use nginx are working.

All sites that use Apache don't work.
Error on screen is:
502 Bad Gateway
Web server received an invalid response while acting as a gateway or proxy server.

Log shows...
208308#0: *1 connect() failed (111: Connection refused) while connecting to upstream

If I go to <domain>, I get above error, but <domain>/index.php or htm/html works.

All services are running without any issues.

Any ideas on how to fix ?

 

[Daveo]

Debian version is actually 13.2

 

[Sebahat.hadzhi]

Hello, @Daveo . Have you already tried the repair utility? If not, could you please try:

plesk repair web -y

 

[Daveo]

Just tried it and got this...

# plesk repair web -y

Checking Plesk version .............................................. [OK]

Checking apache configuration ....................................... [OK]

Checking nginx configuration ........................................ [OK]

Checking for custom configuration templates ......................... [OK]

Checking associations between domains and IP addresses .............. [OK]

Checking for corrupted reference between IP collections and  
IPaddresses ......................................................... [OK]

Checking for links between APS applications and subscriptions ....... [OK]

Checking for nginx ULIMIT value ..................................... [OK]

Checking for extra configurations in database not owned by any object
................................................................... [OK]

Checking the status of the required Apache modules .................. [OK]

Checking the configuration of Apache modules ........................ [OK]

Checking web server configuration. Please wait
    Reinstalling SSL/TLS certificates ............................... [OK]
    Applying the default SSL/TLS certificate to all IP addresses .... [OK]
    Repairing web server configuration for all domains. This aspect  
    can be used with individual domains ("plesk repair web          
    example.com"), and on the server level ("plesk repair web") ..... [OK]
    Repairing server-wide configuration parameters for web servers .. [OK]

Checking the usage of PHP handlers .................................. [OK]

Checking for obsolete PHP-FPM configuration files ................... [OK]

Checking php-fpm configuration
    Repairing php-fpm configuration for all domains ................. [OK]

Error messages: 0; Warnings: 0; Errors resolved: 0

Still not fixed the issue, no Apache sites are working. Only nginx sites.

Thinking it may be worth reinstalling system back to Debian 12, instead of Debian 13.

 

[Daveo]

I've reinstalled the server to Debian 12.12.

Installed the things I needed: redis, elasticsearch, samba, nfs and plex.

When I get back home I'll do the following...

Install Plesk
Upgrade MariaDB to 11.4 LTS
Restore full server backup
Check to make sure Apache & nginx sites are working

Will report back where this fixes issue or not.

 

[Daveo]

All done and everything is now working fine again

Not sure why no Apache sites were working after restoring full server backup on Debian 13.