LDAP bind failed immediately: Can't contact LDAP server

[lnredone]

Why Centos 7.4 install OPENVPN 2.4.6 use OPENVPN - auth - ldap2.0.3. The correct RPM package
The same environment in centos6.5 no problem

LDAP bind failed immediately: Can't contact LDAP server

[colinbjohnson]

Two suggestions:

1. Attempt to make the same connection using the ldapsearch utility.
2. Include the conf file utilized by OpenVPN.

[netkey]

I met the same problem，it works fine for serveral days，but today the vpn server can't work,it seems the openvpn server exited when can't connect to ldap server.

here is some log :

Dec 18 10:19:25 openvpn[1356]: LDAP bind failed immediately: Can't contact LDAP server
Dec 18 10:19:25 openvpn[1356]: Unable to bind as cn=Manager,dc=test,dc=com
Dec 18 10:19:25 openvpn[1356]: LDAP connect failed.
Dec 18 10:20:00 systemd[1]: openvpn@server.service: main process exited, code=killed, status=6/ABRT
Dec 18 10:20:00 systemd[1]: Unit openvpn@server.service entered failed state.
Dec 18 10:20:00 systemd[1]: openvpn@server.service failed.

[Soraphiroth]

I have the same issue, with CentOS 7.6, ovpn 2.4.6 and auth-ldap 2.0.3. I verified with ldapsearch and I get my results without any problem.

My solution was simply to use the IP of the domain controller. I don't know why but the plugin can't seem to find it with its fqdn or simply the domain.

[albert748]

The same issue here, looks like DNS resolver not stable, any update?

[psychomantys]

i have this problem when using chroot

[badsysadm]

i have this problem when using chroot

It looks like the chroot has an incorrect resolv.conf file or something like that. When accessing the ldap server via IP, everything worked