Roland
In my attempt to resolve the "cannot connect to x server" issue that I get when attempting to open qluman-qt, I have re-read the Install Guide to see if I might be doing something wrong. I see the comment in Chapter 3 Step 9: "... we suggest to run only system-related tasks directly on the cluster's head-node(s) and have physical or virtual front-end (FE) nodes for user access/activity. In this dialog you can choose to setup a virtual FE node as a virtual machine running on the head-node. If you decide not to do so, we advise to assign a physical machine as a FE node at a later stage."
I have attempted to implement the suggested approach of setting up a physical Front End (I have prepared both a desktop and a laptop computer, in my case). I have followed the instructions in the First Steps Guide Section 1.6.3, and then specifically Section 1.6.3.2. I have installed Singularity v3.6.0 on my desktop and laptop. I have downloaded the most current QluMan GUI Singularity container (appears to be version 11.0.4.2), and verifies that it runs on both the laptop and desktop using the command singularity exec qluman-11.0.4.2-singularity.sqsh qluman-qt
or when operating from the directory where I have the container saved, with the command ./qluman-11.0.4.2-singularity.sqsh
The QluMan GUI opens and presents the Qlustar Management Interface window, with a Connect Cluster dialog open and active. That all looks great, but I expected to see a way to enter the One Time Token, and then have access to the Management Interface to allow me to go through the remainder of the First Steps Guide. I note that there is no description that I have seen for connecting the physically separate Front End to the cluster. Please verify that the Front End computer should just be connected to the Private Ethernet network that is set up for the cluster, and that I can make that physical connection at this point in the First Steps sequence; specifically I have the Head Node running with Qlustar OS installed and I have the Front End powered up with the QluMan GUI Singularity container installed and running.
Also, verify that I should download the One Time Token on the Front End computer and not on the Head Node computer when I am setting up to operate with a physically separate Front End.
I'll give that a try this afternoon and report what luck.
KIm