Error 502 App Crash on Rocky Linux 9 after using Redhat build script

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Upon following the instructions and running the installation script, it finally was working after multiple tries owing to an error with rabbitmq (where I disabled selinux and firewalld [useless for this scenario]) and then finally had the website accessible.

Noted in /var/log/onlyoffice/nginx-error.log the following:

2026/03/11 13:15:00 [crit] 939#939: *56 connect() to unix:/var/run/onlyoffice/onlyoffice.socket failed (2: No such file or directory) while connecting to upstream, client: 192.168.4.9, server: , request: “GET /TenantLogo.ashx?logotype=3 HTTP/1.0”, upstream: “fastcgi://unix:/var/run/onlyoffice/onlyoffice.socket:”, host: “apgoo.davrom.com.au”, referrer: “https://apgoo.davrom.com.au/

(where apgoo.davrom.com.au is not a real location for the purpose of privacy here)

and I can see there is no /run/onlyoffice (symlinked reference is /var/run/onlyoffice) directory hence no socket files are being found by Nginx - assuming something isn’t running or working but all seems happy with onlyoffice processes, ports and setup? There must be some bit missing.

This seems to relate to onlyofficeJabber.service which has an access error - upon further digging the root password for MySQL needed to be changed and it turns out onlyoffice database doesn’t exist either.

Curious why it is using both MySQL and PostGRESql as well?

Seems there must be a post install doc somewhere needed to get this final bit over the line?

Sorry for the possibly obvious, but new to this whole setup and annoyed that NextCloud Collabora just stopped working after years with no help to get it going - only solution is to try something new and close to the MS files people want to co-author/share.