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MirroMode fix. Diagram next and MMR stuff.

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Gavin Henry 2007-11-16 13:14:50 +00:00
parent d1560750b4
commit af1492d189
1 changed files with 15 additions and 10 deletions
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doc/guide/admin/replication.sdf
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@ -149,14 +149,14 @@ H3: syncrepl replication
H3: delta-syncrepl replication H3: delta-syncrepl replication
H3: N-Way Multi-Master H3: N-Way Multi-Master replication
http://www.connexitor.com/blog/pivot/entry.php?id=105#body http://www.connexitor.com/blog/pivot/entry.php?id=105#body
http://www.openldap.org/lists/openldap-software/200702/msg00006.html http://www.openldap.org/lists/openldap-software/200702/msg00006.html
http://www.openldap.org/lists/openldap-software/200602/msg00064.html http://www.openldap.org/lists/openldap-software/200602/msg00064.html
H3: MirrorMode H3: MirrorMode replication
MirrorMode is a hybrid configuration that provides all of the consistency MirrorMode is a hybrid configuration that provides all of the consistency
guarantees of single-master replication, while also providing the high guarantees of single-master replication, while also providing the high
@ -611,16 +611,18 @@ happen with a non-MirrorMode deployment also.
H3: MirrorMode Configuration H3: MirrorMode Configuration
MirrorMode configuration is actually very easy. If you have ever setup a normal MirrorMode configuration is actually very easy. If you have ever setup a normal
slapd syncrepl provider, then the only change is the directive: slapd syncrepl provider, then the only change is the following two directives:
> mirrormode on > mirrormode on
> serverID 1
You also need to make sure the {{rid}} of each mirror node pair is different and Note: You need to make sure that the {{sererID}} of each mirror node pair is
that the {{provider}} syncrepl directive points to the opposite mirror node. different and that the {{provider}} syncrepl directive points to the opposite
mirror node.
H4: Mirror Node Configuration H4: Mirror Node Configuration
This is the same as the {{SECT:Set up the provider slapd}} section, referencing This is the same as the {{SECT:Set up the provider slapd}} section, reference
{{SECT:delta-syncrepl replication}} if using {{delta-syncrepl}}. {{SECT:delta-syncrepl replication}} if using {{delta-syncrepl}}.
Here's a specific cut down example using {{SECT:LDAP Sync Replication}} in Here's a specific cut down example using {{SECT:LDAP Sync Replication}} in
@ -628,7 +630,7 @@ Here's a specific cut down example using {{SECT:LDAP Sync Replication}} in
MirrorMode node 1: MirrorMode node 1:
> # syncrepl directives > # syncrepl directives
> syncrepl rid=1 > syncrepl rid=1
> provider=ldap://ldap-rid2.example.com > provider=ldap://ldap-rid2.example.com
> bindmethod=simple > bindmethod=simple
@ -640,11 +642,12 @@ MirrorMode node 1:
> retry="60 +" > retry="60 +"
> >
> mirrormode on > mirrormode on
> serverID 1
MirrorMode node 2: MirrorMode node 2:
> # syncrepl directives > # syncrepl directives
> syncrepl rid=2 > syncrepl rid=1
> provider=ldap://ldap-rid1.example.com > provider=ldap://ldap-rid1.example.com
> bindmethod=simple > bindmethod=simple
> binddn="cn=mirrormode,dc=example,dc=com" > binddn="cn=mirrormode,dc=example,dc=com"
@ -655,16 +658,18 @@ MirrorMode node 2:
> retry="60 +" > retry="60 +"
> >
> mirrormode on > mirrormode on
> serverID 2
It's simple really; each MirrorMode node is setup {{B:exactly}} the same, except It's simple really; each MirrorMode node is setup {{B:exactly}} the same, except
that the {{B:provider}} directive is set to point to the other MirrorMode node. that the {{B:provider}} directive is set to point to the other MirrorMode node
and the {{serverID}} is unique.
H4: Failover Configuration H4: Failover Configuration
There are generally 2 choices for this; 1. Hardware proxies/load-balancing or There are generally 2 choices for this; 1. Hardware proxies/load-balancing or
dedicated proxy software, 2. using a Back-LDAP proxy as a syncrepl provider dedicated proxy software, 2. using a Back-LDAP proxy as a syncrepl provider
MORE HERE and a nice PICTURE A typical enterprise example might be:
H4: Normal Consumer Configuration H4: Normal Consumer Configuration