occasional user entry being deleted

[Al <afrunning@gmail.com>]

Hi All -

I'm having an odd issue where on a rare occasion (a couple of times a
week), a new LDAP user entry is being deleted shortly after it is
created.  Sometimes it happens within a few minutes, sometimes it
happens within an hour or so.

I have a 4 way multi-master setup, with all writes being directed at a
single server with a load balancer.  I have the auditlog enabled (from
failed attempts at delta sync) and I see auditDelete entries in the
auditdb, but its being executed from the internal admin user, not a
"real" user.  I do not see anything suspect in my system logs running
at the normal loglevel.

I'm running 2.4.39 on Redhat 6, x64 with mdb.  Below is a snippet of
my configuration from the specific database in question.  Does anyone
know why this might be occurring?  Any idea on how to further
troubleshoot this issue?

Thanks in advance -

Al

dn: olcDatabase={1}mdb,cn=config
objectClass: olcDatabaseConfig
objectClass: olcMdbConfig
olcDatabase: {1}mdb
olcDbDirectory: /PATH/TO/OPENLDAP/var/openldap-data
olcSuffix: dc=company,dc=com
olcAddContentAcl: FALSE
olcLastMod: TRUE
olcLimits: {0}dn.base="XXXXXXX" size.soft=unlimited
size.hard=unlimited  time.soft=unlimited  time.hard=unlimited
olcMaxDerefDepth: 15
olcReadOnly: FALSE
olcRootDN: cn=Manager,dc=company,dc=com
olcRootPW:: XXXXXXXXX
olcSyncUseSubentry: FALSE
olcMirrorMode: TRUE
olcMonitoring: TRUE
olcDbCheckpoint: 512 5
olcDbNoSync: TRUE
olcDbIndex: objectClass eq
olcDbIndex: entryUUID eq
olcDbIndex: entryCSN eq
olcDbIndex: cn pres,eq,sub
olcDbIndex: uid eq
olcDbIndex: uidNumber eq
olcDbIndex: gidNumber eq
olcDbIndex: uniqueMember eq
olcDbIndex: nisNetgroupTriple eq
olcDbIndex: sudoUser eq,sub
olcDbIndex: mail eq
olcDbIndex: pwmToken eq,sub
olcDbIndex: memberOf eq
olcDbMaxSize: 25000000000
olcDbMode: 0600
structuralObjectClass: olcMdbConfig
entryUUID: xxxx-xxxx-xxxxx-xxxxx
creatorsName: cn=config
createTimestamp: 20111014131247Z
olcSyncrepl: {0}rid=011 provider=ldap://server1:21389/ bind
 method=simple timeout=0 network-timeout=0 binddn="XXXXXXX"
credentials="XXXX" keepalive=0:0:0 startt
 ls=critical filter="(objectclass=*)" searchbase="dc=company,dc=com"
 scope=sub schemachecking=off type=refreshOnly retry="30 +" interval=00:00:00:30
olcSyncrepl: {1}rid=012 provider=ldap://server2:21389/ bind
 method=simple timeout=0 network-timeout=0 binddn="XXXXXXX"
credentials="XXXX" keepalive=0:0:0 startt
 ls=critical filter="(objectclass=*)" searchbase="dc=company,dc=com"
 scope=sub schemachecking=off type=refreshOnly retry="30 +" interval=00:00:00:30
olcSyncrepl: {2}rid=013 provider=ldap://server3:21389/ bind
 method=simple timeout=0 network-timeout=0 binddn="XXXXXXX"
credentials="XXXX" keepalive=0:0:0 startt
 ls=critical filter="(objectclass=*)" searchbase="dc=company,dc=com"
 scope=sub schemachecking=off type=refreshOnly retry="30 +" interval=00:00:00:30
olcSyncrepl: {3}rid=014 provider=ldap://server4:21389/ bind
 method=simple timeout=0 network-timeout=0 binddn="XXXXXXX"
credentials="XXXX" keepalive=0:0:0 startt
 ls=critical filter="(objectclass=*)" searchbase="dc=company,dc=com"
 scope=sub schemachecking=off type=refreshOnly retry="30 +" interval=00:00:00:30
entryCSN: 20140924095732.634049Z#000000#001#000000
modifiersName: cn=Manager,cn=config
modifyTimestamp: 20140924095732Z