Problem:

Resolver settings on cPanel servers running AlmaLinux 8 reset after system reboots, causing network connectivity and DNS resolution issues.

Solution:

To maintain resolver settings across reboots:

1. Edit /etc/resolv.conf: Open the file:
   
   sudo nano /etc/resolv.conf
   
   

2. Add Hetzner's IPv4 resolvers:
   
   nameserver 185.12.64.1
   nameserver 185.12.64.2
   
   

3. Prevent Changes: Protect the file from modifications:
   
   sudo chattr +i /etc/resolv.conf

    

This ensures Hetzner's IPv4 resolvers persistently remain configured on cPanel AlmaLinux 8 servers, preventing resolver resetting issues post-reboot.