On Thursday 27 October 2005 18:59, Leigh Porter wrote: > Hiya All, > > I also have seen this problem. I have a master and syncrepl OpenLDAP > pair on various versions from 2.2.18 I don't think the OP was using syncrepl. Note that there are known issues with syncrepl providers on 2.2 ... > to 2.2.2x and get seemingly random database corruption problems on the > master. To fix this, I slapcat the slave, > delete the master db and slapadd it to the master, delete the slave > database and restart both - this of course fixes > it all.. And db_recover ? > When the problem presents itself, the master refuses to answer queries > and usually hangs the connection, often > there are quite a few active conenctions to slapd, all hung. If I > slapcat the master's database, the slapcat will > get to a certain point and then hang. Sounds like slapd is running out of db environment/locks etc etc. > > I have no idea what could be causing this, we never caught it on a log > > :( It's odd as we are not doing much > > that is clever, not many updates but quite a few reads (ISP auth > system). I did have a DB_CONFIG > but deleted it as performance was fine without it and I removed it to > rule it out. But, maybe the database environment wasn't big enough to handle the few writes when under read load ... > At the moment I am testing 2.3.11 on some lab boxes, but as per the last > posts syncrepl does not seem > to work at the moment. I'm seeing one issue on 2.3.11, the contextCSN on the suffix of a syncprov'd db doesn't seem to update as it should (even with a suitable syncprov-checkpoint and indexed entryUUIDs). Restarting the provider fixes that, and immediately synchronisation starts up again.. I may consider downgrading to 2.3.9 with patches ... > . On the subject of which, does anybody know why > this would happen wioth > ldap 2.3.11 and bdb 4.3.29 > > root@server1:/database/openldap/openldap-data# slapadd -vwl > /root/test.ldif slapadd: database doesn't support necessary operations. No idea without seeing the slapd.conf. -- Buchan Milne ISP Systems Specialist B.Eng,RHCE(803004789010797),LPIC-2(LPI000074592)
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