Can connect with ldapsearch but can't connect with check_ldap: "ldap_bind: Can't contact LDAP server (-1)"

mark.anderson-ZD/[email protected] Sat, 21 Apr 2018 01:36:44 -0400
Newsgroups gmane.network.nagios.plugins
Message-ID <201804210536.w3L5aiRU022601__28654.3346745477$1524288885$gmane$org@mail55c28.carrierzone.com>
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=09


Hello,

I can connect to the OpenLDAP server I want to monitor with ldapsearch:

anderson@nagios:/usr/local/nagios/libexec$ ldapsearch -H ldap://xxxxx.yyyyy=
=2Eedu:389 -x -b "cn=3DOracleContext,dc=3Dyyyyy,dc=3Dedu"
(much data comes back)

but I cannot connect with check_ldap:

anderson@nagios:/usr/local/nagios/libexec$ check_ldap -H ldap://xxxxx.yyyyy=
=2Eedu:389 -b "cn=3DOracleContext,dc=3Dyyyyy,dc=3Dedu" -v
ldap_bind: Can't contact LDAP server (-1)
Could not bind to the LDAP server

What does "Can't contact LDAP server" mean in this context?&nbsp; It is not=
 signalling a network connectivity problem, as seen by the success of ldaps=
earch.&nbsp; It is not signalling a hostname resolution problem; the proble=
m symptom does not change if I use the IP address rather than the hostname=
=2E

check_ldap is from nagios-plugins-release-2.2.1.

Thank you for your consideration.

Mark

&nbsp;



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<div class=3D"userStyles" style=3D" font-family: Arial; font-size: 12pt; co=
lor: #000000;">Hello,<br>
<br>
I can connect to the OpenLDAP server I want to monitor with ldapsearch:<br>
<br>
anderson@nagios:/usr/local/nagios/libexec$ ldapsearch -H ldap://xxxxx.yyyyy=
=2Eedu:389 -x -b "cn=3DOracleContext,dc=3Dyyyyy,dc=3Dedu"<br>
(much data comes back)<br>
<br>
but I cannot connect with check_ldap:<br>
<br>
anderson@nagios:/usr/local/nagios/libexec$ check_ldap -H ldap://xxxxx.yyyyy=
=2Eedu:389 -b "cn=3DOracleContext,dc=3Dyyyyy,dc=3Dedu" -v<br>
ldap_bind: Can't contact LDAP server (-1)<br>
Could not bind to the LDAP server<br>
<br>
What does "Can't contact LDAP server" mean in this context?&nbsp; It is not=
 signalling a network connectivity problem, as seen by the success of ldaps=
earch.&nbsp; It is not signalling a hostname resolution problem; the proble=
m symptom does not change if I use the IP address rather than the hostname=
=2E<br>
<br>
check_ldap is from nagios-plugins-release-2.2.1.<br>
<br>
Thank you for your consideration.<br>
<br>
Mark<br>
<br>
&nbsp;</div>


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