openldap-technical August 2025

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Re: Multiple memberOf overlays
by Arvid Requate 06 Aug '25

06 Aug '25

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Multiple memberOf overlays
by John C. Pfeifer 05 Aug '25

05 Aug '25

I am in the process of converting an existing LDAP infrastructure to OpenLDAP. I have a case where it would be convenient for two different objectClasses to map into the memberOf attribute. Is it possible to define two overlay configs or will they end up fighting each other over the memberOf attribute? For instance: dn: olcOverlay={5}memberofA,olcDatabase={2}mdb,cn=config objectClass: olcOverlayConfig objectClass: olcMemberOf olcOverlay: {5}memberofA olcMemberOfDangling: error olcMemberOfRefInt: FALSE olcMemberOfGroupOC: objectClassA olcMemberOfMemberAD: member olcMemberOfMemberOfAD: memberOf dn: olcOverlay={6}memberofB,olcDatabase={2}mdb,cn=config objectClass: olcOverlayConfig objectClass: olcMemberOf olcOverlay: {6}memberofB olcMemberOfDangling: error olcMemberOfRefInt: FALSE olcMemberOfGroupOC: objectClassB olcMemberOfMemberAD: member olcMemberOfMemberOfAD: memberOf // John Pfeifer Division of Information Technology University of Maryland, College Park

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Queries on openLDAP deployment on multi region on Kubernetes cluster
by vithal.akunuri＠tdsynnex.com 05 Aug '25

05 Aug '25

Hi, openldap-stack-ha was deployed as stateful set of 4 on multi region Kubernetes ( micro K8s ) cluster with 2 nodes in each region with multi master configuration. Application connections to LDAP are managed through kubernetes service. Multiple issues are noticed with this setup and would like to seek some guidance and feedback. 1. Frequent replication issues : For monitoring, script is being executed every 1 hour to check the replication status using check_syncrepl_extended command between all the providers and consumers. Is there any better to monitor the replication lag ? To recover from this issue, the pods are being recycled on the provider host which is out of sync. Is there any guidance of deploying LDAP in multi region ? Is multi master recommended in production environment for resiliency and performance? 2. Bulk upload : Is there any guidance on doing bulk upload into LDAP in this current setup? Thanks, Vithal

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pwdMaxIdle does not work as described in OpenLDAP 2.5
by Windl, Ulrich 04 Aug '25

04 Aug '25

Hi! I was playing with olcLastBind and pwdMaxIdle, setting up a test user and a test policy. However when the account should have been expired, nothing happened, i.e.: the user still could log in and change the password. Here are some details from the sample (variables have a different name, but you should be able to correlate them): ACCT_CHANGED = "20250728081545Z" ACCT_MAX_IDLE = "250000" AUTH_TIMESTAMP = "20250728081545Z" CURRENT_TIME_T = "1754049116" POLICY_CHANGED = "20250716131620Z" POLICY_NAME = "PP-Testing" SOURCE_NAME = "LDAP Password Policy" USER_ID = "testuser" I'm using the lastbind overlay and these settings: olcLastBindPrecision: 432000 olcLastBindForwardUpdates: TRUE My program calculated that the account had expired 1.256 days ago. Am I missing something, or is it a bug? Should there be an index on the authTimestamp attribute? Do I have to set olcLastbind to TRUE also? (I avoided that, because in 2.5 I cannot delay updates to the attribute, and some periodic automated logins flood the syncrepl changelog that way.) Kind regards, Ulrich Windl

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openldap-technical August 2025