(ITS#7581) adding meta backend in cn=config with ldapadd / ldapmodify

[dcoutadeur@linagora.com]

Full_Name: dcoutadeur
Version: 2.4.35 / git
OS: openSuse 11.3 x86_64
URL: 
Submission from: (NULL) (80.67.162.201)


I apologize in advance if this is not considered as a bug, but I thought this
ticket should help the community anyway...

The problem is that it seems impossible to add meta backend in cn=config thanks
to ldapadd / ldapmodify clients. I thought the major interest for cn=config was
precisely to let administrators change the configuration in a remote way, but
maybe new database configuration is an exception ?

Here are the technical elements :

Content of meta.ldif :

dn: olcDatabase={2}meta,cn=config
objectClass: olcDatabaseConfig
objectClass: olcMetaConfig
olcDatabase: {2}meta
olcSuffix: dc=foo,dc=com

debug information in slapd, after the command :
ldapadd -H "ldap://localhost:389"; -D "cn=config" -W -f meta.ldif

518220f1 conn=1002 op=1 ADD dn="olcDatabase={2}meta,cn=config"
518220f1 meta_back_db_open: no targets defined
518220f1 backend_startup_one (type=meta, suffix="dc=foo,dc=com"): bi_db_open
failed! (1)
518220f1 olcSuffix: value #0: <olcSuffix> failed startup (dc=foo,dc=com)!

However, I can add this entry via slapadd :

dn: olcDatabase={2}meta,cn=config
objectClass: olcDatabaseConfig
objectClass: olcMetaConfig
olcDatabase: {2}meta
olcSuffix: dc=foo,dc=com
olcAddContentAcl: FALSE
olcLastMod: TRUE
olcMaxDerefDepth: 15
olcReadOnly: FALSE
olcSyncUseSubentry: FALSE
olcMonitoring: FALSE
olcDbOnErr: continue
olcDbPseudoRootBindDefer: TRUE
olcDbSingleConn: FALSE
olcDbUseTemporaryConn: FALSE
olcDbConnectionPoolMax: 16
olcDbBindTimeout: 100000
olcDbCancel: abandon
olcDbChaseReferrals: FALSE
olcDbNoRefs: FALSE
olcDbNoUndefFilter: FALSE
olcDbNretries: 10
olcDbProtocolVersion: 3
olcDbRebindAsUser: FALSE
olcDbSessionTrackingRequest: FALSE
olcDbTFSupport: no
structuralObjectClass: olcMetaConfig
entryUUID: cf8afa3a-a284-4ac8-b60e-9431b0807ed4
creatorsName: cn=config
createTimestamp: 20130430162302Z
entryCSN: 20130430162302.509672Z#000000#000#000000
modifiersName: cn=config
modifyTimestamp: 20130430162302Z

The fact is I don't have a metatarget configuration, because this is a subentry
of olcDatabase={2}meta,cn=config, thus I must add the latter entry first.


Also notice that I can't do a slapadd with just the meta configuration. (the
ldif above). If I do this, I have an error :
slapadd: could not add entry dn="olcDatabase={2}meta,cn=config" (line=1):
autocreation of "olcDatabase={-1}frontend" failed

I had to make a backup of the full configuration, and then add the meta
configuration and import the resulting file.