Roland
I have attempted to investigate the reason for DNS not working. In my original description of the problem, I mention that after installing Qlustar I had to restart the network with
systemctl restart systemd-resolved.service
I did not recall seeing a step to restart the network service like that described in the Install Guide, so I went back and installed Qlustar again to examine what I was doing that might have made that instruction necessary. Here is what I found; The first instruction in the First Steps Guide (Chapter 1, Section 1.1) is to log in as root and start the post install configuration with the command
/usr/sbin/qlustar-initial-config
When I do that I get an error message that says, "The hostname cl-head is not externally resolvable. You might want to register it with your DNS server. Adding it to /etc/hosts." Well, I see that error message described exactly in the First Steps Guide right after that initial setup instruction. The Guide says, "If your chosen hostname can't be resolved via DNS, you will see a non-fatal error message reminding you that the hostname should be registered in some (external) name service (typically DNS)." So, it looks like all of the troubles I experience later on is caused by me incorrectly forcing the network to restart, rather than fixing the hostname registration at that point in the First Steps procedure. I am unfamiliar with setting up or managing networks generally, and I assume that someone that has some expertise in that area would know instantly what to do when they see that error message, but I do not. My attempts to find a procedure for that on the internet, and execute it, have been unsuccessful. Can you describe a step by step procedure similar to the other procedures described in the Install Guide and First Steps Guide, that would get me through registering a hostname in an external DNS?
Regards, Kim
P.S. I have also tried installing Qlustar with a virtual Front End head node, and (obviously) experienced similar network failure difficulties with those attempts as well. - KP