Try use this settings:
On master
auto_increment_increment = 2
auto_increment_offset = 0
On slave
auto_increment_increment = 2
auto_increment_offset = 1
This makes sure that auto-increments do not colide between master and
slave so you can achieve switchover without conflicts because of auto
increment columns.
Adrian
On Nov 26, 2008, at 10:18 PM, Brett Nemeroff wrote:
Before doing this, I'd seriously consider the problems associated
with master-master replication.
um, I don't know what they are.. but I know they are real problems.
Such as collisions in auto-incrementing data.
-Brett
On Wed, Nov 26, 2008 at 3:06 PM, Uwe Kastens <[EMAIL PROTECTED]> wrote:
Hi Krunal,
>
> I am just on my way to implement the same. At the moment I am
planing a
> kind of Mysql Master - Master together with one VIP for
> Mysql-opensips-communication. So for your example you will
have to
> mysql-servers. opensips is connection to lets say to 192.168.1.4
> <http://192.168.1.4/> which
> points on one of your mysql-servers. You will need active-
active for
> mysql since opensips will write some information in the
database as
> well.
>
>
>
> I am working with mysql-5 and heartbeat-2 in mode 1. Its nearly
> working.
>
>
> Would you please explain it somewhat in detail?
Sure, at the moment its only a testing platform. I took two
MySQL-Servers which are configured as master-master. So writing on
both
databases is possible and is synchronized. I found a good step-by-step
guide under:
http://www.howtoforge.com/mysql_master_master_replication
I configured a very simple setup for heartbeat to share one VIP
between
both servers for client connection. So a kind of mysql-test is
needed to
check if the database is online on the "normal" IP-Adress. If not the
VIP should be switched to the other server. I found a kind of
nagios_mysql_check usefull.
The openser-servers are connecting only to the vip address. Read and
Write are working on only one database. This should be enough for a
small environment.
Why no master - slave? I found it to complicate to make a slave to a
master by skript.
Why not the "normal" setup (drbd with mysql and heartbeat)? I looks to
complicated.
But! I have no idea how it will work in a real world.
BR
kiste
--
kiste lat: 54.322684, lon: 10.13586
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