please provide the startup sequence from the ndsd.log and the startup sequence from the message.log anonymized here.

a revert from a snapshot of a server with eDir can have very bad consequences for an NDS. I don't want to go into the details at this point because I had enough eDirs in the field that I had to spend a lot of time putting back into function due to snapshots. The eDir is a very robust directory service, but it also has its limits in terms of fault tolerance.
George

Hi Georg.

I don't know whta happened, but I stop the services using systemctl and start the instance using ndsmanage and the services start whitout error.

Look:

[root@TMP309 ~]# systemctl status ndsdtmpl-etc-opt-novell-eDirectory-conf-nds.conf@-etc-opt-novell-eDirectory-conf-env.service
● ndsdtmpl-etc-opt-novell-eDirectory-conf-nds.conf@-etc-opt-novell-eDirectory-conf-env.service - eDirectory service for /etc/opt/novell/eDirectory/conf/nds.conf.
Loaded: loaded (/usr/lib/systemd/system/ndsdtmpl-etc-opt-novell-eDirectory-conf-nds.conf@.service; enabled; preset: disabled)
Active: active (running) since Thu 2024-11-21 15:19:15 -04; 17h ago
Main PID: 444418 (ndsd)
Tasks: 126
Memory: 770.2M
CPU: 4min 29.011s
CGroup: /system.slice/system-ndsdtmpl\x2detc\x2dopt\x2dnovell\x2deDirectory\x2dconf\x2dnds.conf.slice/ndsdtmpl-etc-opt-novell-eDirectory-conf-nds.conf@-etc-opt-novell-eDi>
└─444418 //opt/novell/eDirectory/sbin/ndsd

Nov 21 15:19:13 TMP309 systemd[1]: Starting eDirectory service for /etc/opt/novell/eDirectory/conf/nds.conf....
Nov 21 15:19:13 TMP309 pre_ndsd_start_factory[444414]: 2738+0 records in
Nov 21 15:19:13 TMP309 pre_ndsd_start_factory[444414]: 2738+0 records out
Nov 21 15:19:13 TMP309 pre_ndsd_start_factory[444414]: 11214848 bytes (11 MB, 11 MiB) copied, 0.00272974 s, 4.1 GB/s
Nov 21 15:19:15 TMP309 post_ndsd_start_factory[444423]: NetIQ eDirectory LDAP Server is listening on the TCP port.
Nov 21 15:19:15 TMP309 post_ndsd_start_factory[444423]: NetIQ eDirectory LDAP Server is listening on the TLS port.
Nov 21 15:19:15 TMP309 systemd[1]: Started eDirectory service for /etc/opt/novell/eDirectory/conf/nds.conf..

Iit it possible that if the instance is ACTIVE (ndsmanage) and try to start ndsdtmpl-etc-opt-novell-eDirectory-conf-nds.conf@-etc-opt-novell-eDirectory-conf-env.service show the error and can't establish the port? 

Thanks