Hi Christophe,

it's clear now that the FE and demo VMs don't start properly for some reason. Please check that your head-node is capable of running KVM virtual machines at all by executing 

$ lsmod | grep kvm_

If this doesn't show either kvm_intel or kvm_amd, virtualization support has been disabled in the BIOS of your head and you need to re-enable it.

If kvm_amd/intel is loaded you can try to startup the FE node VM directly with the Qlustar KVM management script on the cmdline as root:

$ manage-kvm-guest -a start -n login

This should then tell you where things go wrong.

BTW: Renaming head and FE to jcluster(t) while executing the installer is supported and cannot cause the problem.

Best,

Roland

On 11/13/23 22:53, Christophe Guilbert wrote:
Thanks for the very fast answer Roland.

I did learn tmux on my linux workstation, beside the fact that its really cool and plan to use it the future, I am still struggling to have the demo and fe working in tmux

When starting the demo-system (demo-system -a start) -> console-demo-vms, I know as a fact now that I am in tmux but I am still on the c1-head. any Ctrlr-t n (or p) said "no next windows"  , not only I can't switch to demo but also fe which  if I understand correctly must have started automatically.

Once I exit from tmux with Ctrl-t d,

tmux ls gives:
tmux ls
error connecting to /tmp/tmux-0/default (No such file or directory)

I don't see demo or fe.

When trying to start console-fe-vm
console-fe-vm
No tmux session 'login-vm' with server socket 'ql-vms'

What's happening here ?
note that during the install I rename the host c1-head jcluster and the fe jclustert   (jcluster and jclustert are found in the DNS).
Would it change anything ?

I I do
0  root@jcluster  ~  #
dsh -a uptime
beo-201: ssh: connect to host beo-201 port 22: No route to host
beo-202: ssh: connect to host beo-202 port 22: No route to host
beo-203: ssh: connect to host beo-203 port 22: No route to host
beo-204: ssh: connect to host beo-204 port 22: No route to host
login-c: ssh: connect to host login-c port 22: No route to host

So yes , no demo or fe connection.
Why do you thing is happening.


Thanks for your help