[Freeipa-users] ipa-replica-manage re-initialize and database size

[Ludwig Krispenz]

On 04/24/2015 09:26 AM, Dominik Korittki wrote:
> Hello all,
>
> I am running two ipa3.3.3 instances in a replication on Centos 7 servers.
> Last day the rootpartition went full (where the dirsrv databases are 
> stored), because of a big changelog-db.
> dirsrv managed to do a graceful shutdown. Luckily, the second master 
> was still working properly, so i could recover the first one from it.
>
> I resized the partition, booted up again and ran
> 'ipa-replica-manage re-initialize --from ipa02.internal'
>
> Everything seemed to ran fine except for one warnig regarding an issue 
> with the changelog db, heres the log portion of the log 
> /var/log/dirsrv/slapd-INTERNAL/errors on recieving (first) IPA master:
> [...]
> [23/Apr/2015:10:41:46 +0200] NSMMReplicationPlugin - 
> multimaster_be_state_change: replica dc=internal is going offline; 
> disabling replication
> [23/Apr/2015:10:41:47 +0200] - WARNING: Import is running with 
> nsslapd-db-private-import-mem on; No other process is allowed to 
> access the database
> [23/Apr/2015:10:41:55 +0200] - import userRoot: Workers finished; 
> cleaning up...
> [23/Apr/2015:10:41:55 +0200] - import userRoot: Workers cleaned up.
> [23/Apr/2015:10:41:55 +0200] - import userRoot: Indexing complete.  
> Post-processing...
> [23/Apr/2015:10:41:55 +0200] - import userRoot: Generating 
> numSubordinates complete.
> [23/Apr/2015:10:41:55 +0200] - import userRoot: Flushing caches...
> [23/Apr/2015:10:41:55 +0200] - import userRoot: Closing files...
> [23/Apr/2015:10:41:55 +0200] - import userRoot: Import complete.  
> Processed 9983 entries in 8 seconds. (1247.88 entries/sec)
> [23/Apr/2015:10:41:55 +0200] NSMMReplicationPlugin - 
> multimaster_be_state_change: replica dc=internal is coming online; 
> enabling replication
> [23/Apr/2015:10:41:55 +0200] NSMMReplicationPlugin - 
> replica_reload_ruv: Warning: new data for replica dc=internal does not 
> match the data in the changelog.
>  Recreating the changelog file. This could affect replication with 
> replica's  consumers in which case the consumers should be reinitialized.
> [...]
this shouold be normal. at the moment of initialization, a server has a 
database and a changelog. The datavase is recreated by initialization 
and when replication plugin starts it detects that changelog and db no 
longer match and recreates the changelog.


>
> I am no expert in LDAP or Directory Server, but i noticed a 
> significant size difference of files in 
> /var/lib/dirsrv/slapd-INTERNAL/cldb/:
> root at ipa01:~ > du -sch /var/lib/dirsrv/slapd-INTERNAL/cldb/*
> 0 
> /var/lib/dirsrv/slapd-INTERNAL/cldb/61e65983-718611e4-8059dc1c-48160578.sema
> 24M 
> /var/lib/dirsrv/slapd-INTERNAL/cldb/61e65983-718611e4-8059dc1c-48160578_546f4515000000040000.db
> 0 
> /var/lib/dirsrv/slapd-INTERNAL/cldb/9b310907-74a711e4-8059dc1c-48160578.sema
> 6,8M 
> /var/lib/dirsrv/slapd-INTERNAL/cldb/9b310907-74a711e4-8059dc1c-48160578_54748540000000600000.db
> 4,0K    /var/lib/dirsrv/slapd-INTERNAL/cldb/DBVERSION
> 30M    total
>
> root at ipa02:/var/log > du -sch /var/lib/dirsrv/slapd-INTERNAL/cldb/*
> 0 
> /var/lib/dirsrv/slapd-INTERNAL/cldb/98ceaf89-74a711e4-910b9512-1512b1dc.sema
> 4,7G 
> /var/lib/dirsrv/slapd-INTERNAL/cldb/98ceaf89-74a711e4-910b9512-1512b1dc_546f4515000000040000.db
> 0 
> /var/lib/dirsrv/slapd-INTERNAL/cldb/9cfacd4b-74a711e4-910b9512-1512b1dc.sema
> 3,7M 
> /var/lib/dirsrv/slapd-INTERNAL/cldb/9cfacd4b-74a711e4-910b9512-1512b1dc_54748540000000600000.db
> 4,0K    /var/lib/dirsrv/slapd-INTERNAL/cldb/DBVERSION
> 4,7G    total
>
>
> Also, i noticed a difference in the actual database size on both servers:
> root at ipa01:~ > du -sch /var/lib/dirsrv/slapd-INTERNAL/db/*
> 4,0K    /var/lib/dirsrv/slapd-INTERNAL/db/DBVERSION
> 1,3M    /var/lib/dirsrv/slapd-INTERNAL/db/__db.001
> 544K    /var/lib/dirsrv/slapd-INTERNAL/db/__db.002
> 9,6M    /var/lib/dirsrv/slapd-INTERNAL/db/__db.003
> 1,4M    /var/lib/dirsrv/slapd-INTERNAL/db/ipaca
> 2,2M    /var/lib/dirsrv/slapd-INTERNAL/db/log.0000124384
> 101M    /var/lib/dirsrv/slapd-INTERNAL/db/userRoot
> 115M    total
>
> root at ipa02:/var/log > du -sch /var/lib/dirsrv/slapd-INTERNAL/db/*
> 4,0K    /var/lib/dirsrv/slapd-INTERNAL/db/DBVERSION
> 1,7M    /var/lib/dirsrv/slapd-INTERNAL/db/__db.001
> 544K    /var/lib/dirsrv/slapd-INTERNAL/db/__db.002
> 9,6M    /var/lib/dirsrv/slapd-INTERNAL/db/__db.003
> 1,3M    /var/lib/dirsrv/slapd-INTERNAL/db/ipaca
> 4,3M    /var/lib/dirsrv/slapd-INTERNAL/db/log.0000074356
> 175M    /var/lib/dirsrv/slapd-INTERNAL/db/userRoot
> 193M    total
>
> Besides from that, everything seems to be working fine again, 
> including the replication. No errors or warnings regarding this issue 
> are stated in dirsrv-logs. So I'm a bit confused right know wether to 
> believe everything worked fine or not.
> Is this behaviour of IPA/Directory Server normal? Many thanks in advance!
>
>
> Greetings and a nice day,
> Dominik Korittki
>
>

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