8:57 p.m.
Hi,
to my understanding the admin guide on mirrormode is misleading.
http://www.openldap.org/doc/admin24/replication.html#MirrorMode
According to this documentation both nodes have to be put into
mirror mode, as far as I understand the concept of mirror mode, and is
described in slapd.conf(5), there is one node accepting write
operations, that is 'mirrormode on' statement, the other node acts as
synrepl consumer and a hot standby only, with 'mirrormode off'.
Could someone please correct me, if I'm wrong.
-Dieter
--
Dieter Klünter | Systemberatung
sip: +49.180.1555.7770535
http://www.dpunkt.de/buecher/2104.html
GPG Key ID:8EF7B6C6
9:37 p.m.
Dieter Kluenter wrote:
Hi,
to my understanding the admin guide on mirrormode is misleading.
http://www.openldap.org/doc/admin24/replication.html#MirrorMode
According to this documentation both nodes have to be put into
mirror mode, as far as I understand the concept of mirror mode, and is
described in slapd.conf(5), there is one node accepting write
operations, that is 'mirrormode on' statement, the other node acts as
synrepl consumer and a hot standby only, with 'mirrormode off'.
Could someone please correct me, if I'm wrong.
The doc is correct. For seamless failover to work automatically, without any
manual intervention, both nodes must be configured identically.
--
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/
4:14 a.m.
On Wed, Mar 3, 2010 at 3:37 PM, Howard Chu <hyc(a)symas.com> wrote:
> to my understanding the admin guide on mirrormode is misleading.
> http://www.openldap.org/doc/admin24/replication.html#MirrorMode
> According to this documentation both nodes have to be put into
> mirror mode, as far as I understand the concept of mirror mode, and is
> described in slapd.conf(5), there is one node accepting write
> operations, that is 'mirrormode on' statement, the other node acts as
> synrepl consumer and a hot standby only, with 'mirrormode off'.
> Could someone please correct me, if I'm wrong.
The doc is correct. For seamless failover to work automatically, without any manual
intervention, both nodes must be configured identically.
I wonder out of interest, is it legal to have something like the
following on both nodes (that is with two different rid=xxx syncrepl
statements) ?
This would in theory allow the same config on both servers, assuming
it was acceptable config-wise.
Cheers
Brett
--- cut ---
# Global section
serverID 1 ldap://ldap-sid1.example.com
serverID 2 ldap://ldap-sid2.example.com
# database section
# syncrepl directive
syncrepl rid=001
provider=ldap://ldap-sid2.example.com
bindmethod=simple
binddn="cn=mirrormode,dc=example,dc=com"
credentials=mirrormode
searchbase="dc=example,dc=com"
schemachecking=on
type=refreshAndPersist
retry="60 +"
syncrepl rid=002
provider=ldap://ldap-sid1.example.com
bindmethod=simple
binddn="cn=mirrormode,dc=example,dc=com"
credentials=mirrormode
searchbase="dc=example,dc=com"
schemachecking=on
type=refreshAndPersist
retry="60 +"
mirrormode on
11:51 a.m.
Brett @Google wrote:
I wonder out of interest, is it legal to have something like the
following on both nodes (that is with two different rid=xxx syncrepl
statements) ?
Yes.
This would in theory allow the same config on both servers, assuming
it was acceptable config-wise.
Cheers
Brett
--- cut ---
# Global section
serverID 1 ldap://ldap-sid1.example.com
serverID 2 ldap://ldap-sid2.example.com
# database section
# syncrepl directive
syncrepl rid=001
provider=ldap://ldap-sid2.example.com
bindmethod=simple
binddn="cn=mirrormode,dc=example,dc=com"
credentials=mirrormode
searchbase="dc=example,dc=com"
schemachecking=on
type=refreshAndPersist
retry="60 +"
syncrepl rid=002
provider=ldap://ldap-sid1.example.com
bindmethod=simple
binddn="cn=mirrormode,dc=example,dc=com"
credentials=mirrormode
searchbase="dc=example,dc=com"
schemachecking=on
type=refreshAndPersist
retry="60 +"
mirrormode on
--
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/
4506
days inactive
4506
days old
openldap-software@openldap.org
3 comments
3 participants
participants (3)
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Brett ＠Google -
Dieter Kluenter -
Howard Chu