I'm currently running a CentOS 7 server with cPanel and Drupal 8. I installed Solr 8.8.1 and I can access the administratrion page where I an able to create cores. I installed the Search API module with Composer.
When I try to use the Solr server via the Search API module, I get a server connection error.
I tried a lot of Drupal configuration, with Basic Auth and standard, via localhost, IP and domain name, but I'm still not able to connect to the Solr server.
Everything I do gets me the following error.
The Solr server could not be reached or is protected by your service provider.
I am the service provider. I verified the firewall isn't blocking the connection.
Can someone tell me what I could have done wrong?