I am going to reproduce the guacamole zentyal hotsync scenario…
Just an idea for now: In “Software Center configuration” on the slave, if not set already, you may try the Unlocked switch.
EDIT:
You may check login attempts in /var/log/messages, unfortunately there’s not much info why it’s not working. I assume some cert problems, tried this patch already without success.
It seems like Guacamole/Zentyal only works without encryption but I am going to investigate further. If you change the ldap encryption method in /etc/guacamole/guacamole.properties to none, it works with zentyal 5.1:
ldap-encryption-method: none
To apply the config just restart tomcat:
systemctl restart tomcat
I am going to fix the module hopefully with encryption, at least with an extra property to change the encryption method.
EDIT2:
Do you have a subscription?
I tested it with nethserver hotsync master, slave and zentyal 5.1 with AD and it worked.
I joined master to the AD, installed repo, guacamole and hotsync which I configured on master and slave.
After doing hotsync on master and hotsync-slave on slave which installed guacamole, I turned off the master and promoted the slave with hotsync-promote. Then reconneced via SSH to the new promoted master because of IP change from slave to master and did /sbin/e-smith/signal-event post-restore-data.
Guacamole was installed and after doing the encryption patch guacamole just worked on new master.
http://docs.nethserver.org/en/v7/hotsync.html
http://docs.nethserver.org/projects/nethserver-devel/en/v7/nethserver-hotsync.html