replication basic idea (newbie question)

[David Simpson <dvd_smpsn@yahoo.com>]

Hi all....

 

im new in this list, im interested to learn openldap, and i have some basic question regarding to the replication, slurpd and ldapsync. i hope all experts here would'nt mind helping me.. Here we go

 

SLURPD:

after reading early posting and having consultation with google, i conclude (please corect me if im wrong):

 

- slurpd is single master and many slave replication 

- anything changes in slapd, also make a change in slave as well

- any changes happen in slave, slave will redirect the changes to master, and master will make a change. FInally, the slave got the change from master itself (not when modification in slave)

- slapd and slurpd, a\cannot do partial replication, only the whole chunk of directory will be replicated

- in slurpd, master give the changes, not slave

- my question: if the master die for unexpected reason, can the slave make modifications? will it be kept locally then synchronized after master wake up?

 

LDAPSYNC

- instead master and slave, it is provider and master

- ldapsync can do partial replication

- consumer asks for replication, not provider

- when provider change, in period of time the consumer modified as well

- when consumer modified, there will update referal to provider, and provider do modification. Finally, consumer get the changes when it does polling to provider.

- my question: if the provider die for unexpected reason, can the consumer make modifications? will it be kept locally then synchronized after provider wake up?

 

maybe this is it. I hope you guys would mind answering the questions. It could be the basic idea for many people who still haven't got idea about replication in openldap

 

Thanks a lot

 

Dave

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