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RE: Testing the state of replicates
I saw the admin24 section, but thought that the contextCSN was meant to
be opaque.
I've looked at rfc4533, but reading sections 2.1.2 through 2.3 doesn't
give me enough information to parse the contextCSN value into something
I can understand. Do you know where I could get (or write) some code to
decode the result?
Thanks for your help.
Roy
-----Original Message-----
From: Gavin Henry [mailto:ghenry@suretecsystems.com]
Sent: Tuesday, March 04, 2008 10:49 AM
To: Marantz, Roy
Cc: openldap-software@openldap.org
Subject: Re: Testing the state of replicates
> Is there something I can query, like contextCSN, to indicate the last
> time syncrepl successfully finished resyncing the particular database?
>
> Any other way to do this or am I just trying to do something that is
> impossible?
See:
http://www.openldap.org/doc/admin24/replication.html#Syncrepl%20Details
"The consumer also stores its replica state, which is the provider's
contextCSN received as a synchronization cookie, in the contextCSN
attribute of the suffix entry. The replica state maintained by a
consumer
server is used as the synchronization state indicator when it performs
subsequent incremental synchronization with the provider server. It is
also used as a provider-side synchronization state indicator when it
functions as a secondary provider server in a cascading replication
configuration. Since the consumer and provider state information are
maintained in the same location within their respective databases, any
consumer can be promoted to a provider (and vice versa) without any
special actions."
And more detail at:
http://www.rfc-editor.org/rfc/rfc4533.txt
For example:
[ghenry@suretec-master admin]$ ldapsearch -x -H ldap://127.0.0.1 -s
'base'
contextCSN
# extended LDIF
#
# LDAPv3
# base <dc=suretecsystems, dc=com> (default) with scope baseObject
# filter: (objectclass=*)
# requesting: contextCSN
#
# suretecsystems.com
dn: dc=suretecsystems,dc=com
contextCSN: 20080228163422.801358Z#000000#000#000000
# search result
search: 2
result: 0 Success
# numResponses: 2
# numEntries: 1
[ghenry@suretec-slave admin]$ ldapsearch -x -H ldap://127.0.0.1 -s
'base'
contextCSN
# extended LDIF
#
# LDAPv3
# base <dc=suretecsystems, dc=com> (default) with scope baseObject
# filter: (objectclass=*)
# requesting: contextCSN
#
# suretecsystems.com
dn: dc=suretecsystems,dc=com
contextCSN: 20080228163422.801358Z#000000#000#000000
# search result
search: 2
result: 0 Success
# numResponses: 2
# numEntries: 1