Hi Andi, Sounds pretty cool - This is the solution I'm looking at currently but with a hardware load balancer and fewer servers. Good to know it scales!
Cheers, Adrian -----Original Message----- From: Andi Daniawan [mailto:a...@xpox.net] Sent: 06 November 2013 23:25 To: users@cloudstack.apache.org Subject: RE: Multi-master MySQL Setup Hi All, Just for your info, I have implemented MariaDB with Galera Clustering. We are using CS 4.2 on 4 management servers with 7 MariaDB servers. All management servers loaded with HA-Proxy to connect to MariaDB servers. It's been running since early October. Andi -----Original Message----- From: Patrick Miller [mailto:patrick.mil...@sungard.com] Sent: Wednesday, November 06, 2013 4:51 AM To: users@cloudstack.apache.org Subject: Re: Multi-master MySQL Setup Take a look at the percona [1] implementation of mysql and there clustered version. Round robin reads and writes supported. 1] http://www.percona.com/ Patrick On Tue, Nov 5, 2013 at 9:55 AM, Adrian Lewis <adr...@alsiconsulting.co.uk>wrote: > Hi Marty/Nux!, > > Thanks for the feedback - sounds like multi-master is not a good thing > then! Load will likely be very small for at least the next 6 months > but I figured that it was one of those things that could be set easily > now (still setting up) that I might appreciate later. > > Based on both your responses, I think I'll just leave it well alone! > Need to get to grips with pacemaker/corosync anyway for other reasons > so I'll just try that with either DRBD replication or MySQL replication. > > Cheers, > > Adrian > > -----Original Message----- > From: Marty Sweet [mailto:msweet....@gmail.com] > Sent: 05 November 2013 17:23 > To: users@cloudstack.apache.org > Subject: Re: Multi-master MySQL Setup > > Others may have had more success with this but from experience of > MySQL in multi-master setups I would avoid this entirely. > > A common setup is using DRDB to provide a master/slave: > Management 1 (MySQL Master) w/ virtual IP Management 2 (MySQL Slave) > > HA IP Address (for agents/services requiring DB write) which is > assigned to the master (using Pacemaker). > > You can then send web management client to the HA IP Address as well. > > It may be worth considering if you need load balancing, depending on > your setup - what loads are you experiencing? > > Marty > > > > On Tue, Nov 5, 2013 at 5:13 PM, Adrian Lewis > <adr...@alsiconsulting.co.uk>wrote: > > > Hi All, > > > > > > > > Just wondering if anyone is using a MySQL multi-master configuration > > with auto_increment_offset (e.g.10) and auto_increment_increment (1 > > for server 1, 2 for server 2 etc)? Does it work? Does anyone know a > > reason why it doesn't or wouldn't work? Is there anything from an > > application point of view that could/would trip up CS if > > auto_increment values are set as more than 1? > > > > > > > > Not planning on deploying multimaster just yet but if I at least > > start with an auto_increment of 10, I'd have the option of adding a > > second master later and being able to load-balance more effectively. > > > > > > > > Thanks in advance, > > > > > > > > Adrian > > > >
