Note: I have searched through years past in 389-users and have found a few others experiencing the same problem, yet I could not find any resolution.
I am attempting to setup chain on update per http://directory.fedoraproject.org/wiki/Howto:ChainOnUpdate
The packages installed are:
389-admin-console-1.1.8-1.el6.noarch
389-ds-1.2.2-1.el6.noarch
389-ds-base-1.2.9.14-1.el6_2.2.x86_64
389-console-1.1.7-1.el6.noarch
389-admin-console-doc-1.1.8-1.el6.noarch
389-ds-base-libs-1.2.9.14-1.el6_2.2.x86_64
389-dsgw-1.1.7-2.el6.x86_64
389-ds-console-1.2.6-1.el6.noarch
389-ds-console-doc-1.2.6-1.el6.noarch
389-adminutil-1.1.14-2.el6.x86_64
389-admin-1.1.25-1.el6.x86_64
The justification for use of chain_on_update is that our clients are “dumb” and unable to follow referrals.
As a POC, I am testing with two servers: be1.foo.com (Master) and be2.foo.com (Consumer)
Prior to following the instructions in the Howto:ChainOnUpdate (linked above) the environment operated as follows:
Scenario A)
Client.foo.com attempts to modify be1.foo.com -> Allowed
Change made by client.foo.com to be1.foo.com is replicated to be2.foo.com
Ldapsearch of both searvers shows the item was properly replicated, value is the same on be1 and be2
-----
Scenario B)
Client.foo.com attempts to modify be2.foo.com -> Not allowed, given referral
Upon following the instructions in the aforementioned howto the environment operates as follows:
Scenario A)
Client.foo.com attempts to modify be1.foo.com -> Allowed
Change made by client.foo.com to be1.foo.com is replicated to be2.foo.com
Ldapsearch of both searvers shows the item was properly replicated, value is the same on be1 and be2
-----
Scenario B)
Client.foo.com attempts to modify be2.foo.com -> Allowed
Change made by client.foo.com *SHOULD* have been handled by the chaining backend and modified on be1
Ldapsearch of both servers shows the item was modified on be2 but not be1 (be1 still has the old value)
It seems the writes from client.foo.com to be2.foo.com are being committed to be local database (userRoot) instead of being handled by the chaining backend (chainbe1).
As the howto suggests, I am using the replication manager for the proxy auth. I have confirmed the credentials on all servers.
dn: cn=dc\3Dfoo\2Cdc\3Dcom,cn=mapping tree,cn=config
objectClass: top
objectClass: extensibleObject
objectClass: nsMappingTree
cn: "dc=foo,dc=com"
nsslapd-state: backend
nsslapd-backend: userRoot
nsslapd-backend: chainbe1
nsslapd-distribution-plugin: libreplication-plugin.so
nsslapd-distribution-funct: repl_chain_on_update
dn: cn=userRoot,cn=ldbm database,cn=plugins,cn=config
objectClass: top
objectClass: extensibleObject
objectClass: nsBackendInstance
cn: userRoot
numSubordinates: 7
nsslapd-suffix: dc=foo,dc=com
nsslapd-cachesize: -1
nsslapd-cachememsize: 10485760
nsslapd-readonly: off
nsslapd-require-index: off
nsslapd-directory: /var/lib/dirsrv/slapd-be2/db/userRoot
nsslapd-dncachememsize: 10485760
dn: cn=replica,cn=dc\3Dfoo\2Cdc\3Dcom,cn=mapping tree,cn=config
objectClass: nsDS5Replica
objectClass: top
nsDS5ReplicaRoot: dc=foo,dc=com
nsDS5ReplicaType: 2
nsDS5Flags: 0
nsds5ReplicaPurgeDelay: 604800
nsDS5ReplicaBindDN: cn=replication manager,cn=replication,cn=config
cn: replica
nsDS5ReplicaId: 6553
nsDS5ReplicaName: ((REDACTED FOR EMAIL THREAD))
dn: cn=chainbe1,cn=chaining database,cn=plugins,cn=config
objectClass: top
objectClass: extensibleObject
objectClass: nsBackendInstance
cn: chainbe1
nsslapd-suffix: "dc=foo,dc=com"
nsfarmserverurl: ldap://be1.foo.com/
nsmultiplexorbinddn: cn=replication manager,cn=replication,cn=config
nschecklocalaci: off
nsusestarttls: on
nsbindmethod:
nsmultiplexorcredentials: {DES}((REDACTED FOR EMAIL THREAD))
dn: cn=config,cn=chaining database,cn=plugins,cn=config
objectClass: top
objectClass: extensibleObject
cn: config
nstransmittedcontrols: 2.16.840.1.113730.3.4.2
nstransmittedcontrols: 2.16.840.1.113730.3.4.9
nstransmittedcontrols: 1.2.840.113556.1.4.473
nstransmittedcontrols: 1.3.6.1.4.1.1466.29539.12
nspossiblechainingcomponents: cn=resource limits,cn=components,cn=config
nspossiblechainingcomponents: cn=certificate-based authentication,cn=component
s,cn=config
nspossiblechainingcomponents: cn=password policy,cn=components,cn=config
nspossiblechainingcomponents: cn=sasl,cn=components,cn=config
nspossiblechainingcomponents: cn=roles,cn=components,cn=config
nspossiblechainingcomponents: cn=ACL Plugin,cn=plugins,cn=config
nspossiblechainingcomponents: cn=old plugin,cn=plugins,cn=config
nspossiblechainingcomponents: cn=referential integrity postoperation,cn=plugin
s,cn=config
nspossiblechainingcomponents: cn=attribute uniqueness,cn=plugins,cn=config
Any help in getting ChainOnUpdate to work with my 389 servers would be greatly appreciated.
Thanks in advance!
Jim Finn
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