LDAP client with problems

TrueNAS General
1

How to configure ldap client truenas scale community Version:
25.04.1? I have ldap server configured with functional authentication and ok in other ldap clients in my network that are not truenas

2

Can you provide a little more detail, have you configured it following the documentation or are you looking to get started?

3

​
​
​
​
​
​
​
​
​
​
​
​
I have filled out all the configuration on my truenas client,
my LDAP server (openldap, ldapadmin) is accessible, I have other LDAP clients on my network that work perfectly. When I restart sssd and look at the sssd_LDAP.log log, I get this error message: * … skipping repetitive backtrace …
(2025-06-16 18:35:57): [be[LDAP]] [sdap_process_result] (0x0040): ldap_result error: [Can’t contact LDAP server]

  • … skipping repetitive backtrace …
    (2025-06-16 19:01:58): [be[LDAP]] [sdap_get_rootdse_done] (0x0040): [RID#18] RootDSE could not be retrieved. Please check that anonymous access to RootDSE is allowed
    • …skipping repetitive backtrace…
      (2025-06-16 19:02:36): [be[LDAP]] [sdap_process_result] (0x0040): ldap_result error: [Can’t contact LDAP server]
    • …skipping repetitive backtrace…
      (2025-06-16 19:02:58): [be[LDAP]] [orderly_shutdown] (0x3f7c0): SIGTERM: killing children
      (2025-06-16 19:02:58): [be[LDAP]] [orderly_shutdown] (0x3f7c0): Shutting down (status = 0)
      (2025-06-16 19:02:58): [be[LDAP]] [server_setup] (0x3f7c0): Starting with debug level = 0x0070. And any attempt to login to the truenas gui interface brings me this error on the screen: Wrong username or password. Please try again. and several messages about the login attempt in the sssd log

I have filled out all the configuration on my truenas client,
my LDAP server (openldap, ldapadmin) is accessible, I have other LDAP clients on my network that work perfectly. When I restart sssd and look at the sssd_LDAP.log log, I get this error message: * … skipping repetitive backtrace …
(2025-06-16 18:35:57): [be[LDAP]] [sdap_process_result] (0x0040): ldap_result error: [Can’t contact LDAP server]

… skipping repetitive backtrace …
(2025-06-16 19:01:58): [be[LDAP]] [sdap_get_rootdse_done] (0x0040): [RID#18] RootDSE could not be retrieved. Please check that anonymous access to RootDSE is allowed
…skipping repetitive backtrace…
(2025-06-16 19:02:36): [be[LDAP]] [sdap_process_result] (0x0040): ldap_result error: [Can’t contact LDAP server]
…skipping repetitive backtrace…
(2025-06-16 19:02:58): [be[LDAP]] [orderly_shutdown] (0x3f7c0): SIGTERM: killing children
(2025-06-16 19:02:58): [be[LDAP]] [orderly_shutdown] (0x3f7c0): Shutting down (status = 0)
(2025-06-16 19:02:58): [be[LDAP]] [server_setup] (0x3f7c0): Starting with debug level = 0x0070. And any attempt to login to the truenas gui interface brings me this error on the screen: Wrong username or password. Please try again. and several messages about the login attempt in the sssd log

4

Firstly are you able to ping the ldap server from your TrueNAS?
What options have you configured for the client? Did you change any of the Advanced settings from defaults e.g. Allow Anonymous Binding? LDAP Screens | TrueNAS Documentation Hub