I just performed a clean install on Ubuntu 22.04 using the Ubuntu Installation instructions.
Pre-reqs installed - check
MongoDB installed and running - check
Elasticsearch installed and running - check
Graylog installed, server.conf updated, and service running - check
Go to login to http://IP_ADDRESS:9000 = Connection Refused
Compared the server.conf to another graylog sever I have access to that is working and the only differences are the http_bind_address, the password_secret and the sha256 password.
Welp… sometimes it’s the easy things you tend to blow right past. Apparently the enable command to make sure mongo starts at system boot didn’t take and mongo wasn’t running after reboot. Fixed that and BAM! In. Thanks for those who replied and provided possible solutions.