nscd: nss_ldap: could not search LDAP server - Server is unavailable

Asked by Rodrigo Ferreira dos Santos on 2018-08-01

I configured authentication by LDAP in my Bionic Server, and works fine, but sometimes I can't connect on the server and the message in /var/log/auth.log is "nscd: nss_ldap: could not search LDAP server - Server is unavailable" ....
There are lots of servers using this LDAP and I dont have this issue.

Could you help me?

Thanks.

Rodrigo

Question information

Language:
English Edit question
Status:
Expired
For:
Ubuntu Edit question
Assignee:
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Last query:
2018-08-02
Last reply:
2018-08-18

Can you ping the LDAP server OK?
Does the name resolve to the correct IP?
Can you telnet to port 389 and/or 636 on the server from the problematic system?
Are there any firewalls or proxies in between?
Are there local firewalls on either system? Are they allowing the LDAP traffic?

Yes, I can ping the server and the authentication (LDAP) works sometimes, but this error message is intermittent.

Does the name resolve to the correct IP? Yes, I have a entry to LDAP Server in /etc/hosts.
Can you telnet to port 389 and/or 636 on the server from the problematic system? Yes, without problems.
Are there any firewalls or proxies in between? Yes, there are firewalls, but I have allowed role.
Are there local firewalls on either system? Are they allowing the LDAP traffic? No there aren't.

Launchpad Janitor (janitor) said : #3

This question was expired because it remained in the 'Open' state without activity for the last 15 days.