Enabling a user does not enable it

[jeremy.fix]

Hi,

My use case is that I’m starting NoMachine (v7.6.2) automatically with a script and then enable a user (the server is configured with “EnableUserDB 1”) in a bash script

systemctl is-active --quiet nxserver
exit_code="$?"
if [ "$exit_code" != "0" ]
then
# The service is not running, we start it
service nxserver start
# sleep 2 # Weird hack to make it work
fi
# Authorize the user to open a nomachine session
log "Nxserver enabling of $SLURM_JOB_USER"
/usr/NX/bin/nxserver --userenable $SLURM_JOB_USER

Unfortunately, even though I see NoMachine saying my user is enabled “NX> 301 User ‘xxxx’ is enabled in the NX user DB.”, half of the time it ends being enabled and half of the time it is not. I check the status with ‘/usr/NX/bin/nxserver –userlist’ and also checked if I could log or not with nxplayer.

My weird hack is to add a “sleep 2” and now it always works but that’s awful;

I thought I should be waiting for the nxserver to be started but my attempt were unsucessful . I used the code

service nxserver start
systemctl is-active --quiet nxserver
exit_code="$?"
while [ "$exit_code" != "0" ]; do
systemctl is-active --quiet nxserver
exit_code="$?"
sleep 1
done

Do you have any idea on what is going wrong and what’s the proper way to handle it ?

Thank you for your help and thank you for the good job.

[kroy]

In your script possibly instead of:

service nxserver start

Use this:

service nxserver start > /dev/null 2>&1 &

or

/etc/NX/nxserver --startup

[jeremy.fix]

Thank you for your answer but unfortunately I do not understand why that should fix the problem.

Your first suggestion will just redirect the stdout and stderr to /dev/null

For the second one you propose, it triggers two questions in my mind ; The nxserver service starts

/etc/NX/nxserver --daemon

which is indeed different from the one you propose : etc/NX/nxserver --startup ; But do you know the difference ? is etc/NX/nxserver --startup blocking when etc/NX/nxserver --daemon is not ?

Thank you.

[brotech]

Hello,

the main difference is that /etc/NX/nxserver --startup
run daemon and then is waiting for it to be ready.

So using /etc/NX/nxserver --startup instead of other commands
you will be sure that sleep is not needed anymore.

[jeremy.fix]

Thank you for the feedback ; This is indeed the one that I used in production

/etc/NX/nxserver --startup
# Authorize the user to open a nomachine session
/usr/NX/bin/nxserver --userenable $ SLURM_JOB_USER

And that seems to be working.

[Author]

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