LDAP server unavailable: SERVER_DOWN

[Marcel Bischoff]

> On 8. Jan 2018, at 15:58, Jochen Hein <jochen at jochen.org> wrote:
> 
> Marcel Bischoff <marcel at herrbischoff.com> writes:
> 
>> I have recently set up a Kolab 16 installation, following this guide: https://docs.kolab.org/installation-guide/ubuntu-16.04.html
>> 
>> Initially everything worked alright until users started connecting
>> continually. Now, from time to time, without immediate apparent
>> reason, the LDAP service becomes unreachable (according to the log
>> messages). This can only be solved by manually restarting the service
>> with "systemctl restart dirsrv at mx.service". Even restarting the server
>> does nothing to recitify this, although the service is started at that
>> time.
> 
> Can you have a look at the dirsrv logs (access&error)?

Good idea, I just did. Here is the tail of the "errors" file. The "access" file has way too many entries to be usefulin this context:

[07/Jan/2018:19:39:15 +0100] NSACLPlugin - acl_access_allowed: Resetting aclpb_pblock 7f146c7e7bd0 to pblock addr 7f14480088d0
[07/Jan/2018:20:42:50 +0100] NSACLPlugin - acl_access_allowed: Resetting aclpb_pblock 7f14747f7bd0 to pblock addr 7f13f400cf50
[07/Jan/2018:21:46:16 +0100] NSACLPlugin - acl_access_allowed: Resetting aclpb_pblock 7f1476ffcbd0 to pblock addr 7f14000097f0
[08/Jan/2018:09:35:30 +0100] NSACLPlugin - acl_access_allowed: Resetting aclpb_pblock 7f14727f3bd0 to pblock addr 7f1428008100
[08/Jan/2018:09:35:31 +0100] NSACLPlugin - acl_access_allowed: Resetting aclpb_pblock 7f14757f9bd0 to pblock addr 7f1420000d50
[08/Jan/2018:10:21:28 +0100] NSACLPlugin - acl_access_allowed: Resetting aclpb_pblock 7f14727f3bd0 to pblock addr 7f1428006770
[08/Jan/2018:11:16:07 +0100] - 389-Directory/1.3.4.9 B2016.109.158 starting up
[08/Jan/2018:11:16:07 +0100] - Detected Disorderly Shutdown last time Directory Server was running, recovering database.
[08/Jan/2018:11:16:08 +0100] - slapd started.  Listening on All Interfaces port 389 for LDAP requests
[08/Jan/2018:11:24:53 +0100] - 389-Directory/1.3.4.9 B2016.109.158 starting up
[08/Jan/2018:11:24:53 +0100] - Detected Disorderly Shutdown last time Directory Server was running, recovering database.
[08/Jan/2018:11:24:53 +0100] - slapd started.  Listening on All Interfaces port 389 for LDAP requests
[08/Jan/2018:11:26:41 +0100] NSACLPlugin - acl_access_allowed: Resetting aclpb_pblock 7f471dff2bd0 to pblock addr 7f46c4004900
[08/Jan/2018:14:39:09 +0100] - 389-Directory/1.3.4.9 B2016.109.158 starting up
[08/Jan/2018:14:39:09 +0100] - Detected Disorderly Shutdown last time Directory Server was running, recovering database.
[08/Jan/2018:14:39:09 +0100] - slapd started.  Listening on All Interfaces port 389 for LDAP requests
[08/Jan/2018:14:39:20 +0100] NSACLPlugin - acl_access_allowed: Resetting aclpb_pblock 7f0fdbffebd0 to pblock addr 7f0f5c00bc80
[08/Jan/2018:15:24:48 +0100] NSACLPlugin - acl_access_allowed: Resetting aclpb_pblock 7f0fdb7fdbd0 to pblock addr 7f0fac008480

Well... "Disorderly Shutdown" does not sound good at all.