Thanks for the info, Walter. I checked some basic info about Galera and it looks very promising. Can you tell what is preferable for loadbalancing of requests? HAProxy/Galera loadbalancer or maybe something else?
Can you tell me also how much does MHA differ from MMM? Functionality looks quite similar. BR, Rafal. 2014-10-29 11:38 GMT+01:00 Heck, Walter <walterh...@olindata.com>: > Hi Rafael, > On Wed, Oct 29, 2014 at 10:15 AM, Rafał Radecki <radecki.ra...@gmail.com> > wrote: > >> I am creating an environment based on about 15 hardware nodes. 6 of them >> will be for mysql databases. They will be divided into three pairs (3x2 >> nodes). Nodes in every pair will be configured with replication. >> >> I done similar configuration about an year ago. I used than: >> - percona 5.5 with standard asynchronous replication; >> - Multi Master Replication Manager for MySQL (http://mysql-mmm.org/ >> <https://t.yesware.com/tl/2627942011ccc3835f76c6e9ba4c0af91f3d3722/407ea34fcfb29332bbc93cdb34f13e4f/df42c03e188abb8c80b981666b82e7ff?ytl=http%3A%2F%2Fmysql-mmm.org%2F>) >> for >> automatic assignment/failover of read and write IP addresses and checking >> the status of replication (mmm provides status scripts); >> > While it works fine for many situations, I wouldn't recommend using it for > any new setups. There hasn't been any updates for years and there are a > decent number of edge cases where MMM fails miserably. There are better > alternatives out there these days. > > >> My question is: I heard that there are other options than standard >> asynchronous replication which sometimes was problematic (for example >> there >> was one slave thread only in percona 5.5 and there was a possibility that >> slave node will fall behind master node in high load situations). I also >> am >> thinking which MySQL fork is the best option if I plan to use replication. >> What can you propose based on your experience? >> > If you want to stick with standard replication, either MariaDB 10 or > Percona 5.6 will do just fine. Instead of MMM you can google for MHA for > instance. > > I would recommend taking a look at Galera though, which takes a different > approach but with some nice benefits. The one thing is that with Galera > your data generally lives on 3 or more servers (2 is possible, but not > recommended). If that is a good idea to you, then Galera would be my > personal preference. > > > -- > Best regards, > > Walter Heck > CEO / Founder OlinData > <https://t.yesware.com/tl/2627942011ccc3835f76c6e9ba4c0af91f3d3722/407ea34fcfb29332bbc93cdb34f13e4f/fd1ca40450db4c95f61e02cfe4940db2?ytl=http%3A%2F%2Folindata.com%2F%3Fsrc%3Dwh_gapp> > - Open Source Training & Consulting > > Check out our upcoming trainings > <https://t.yesware.com/tl/2627942011ccc3835f76c6e9ba4c0af91f3d3722/407ea34fcfb29332bbc93cdb34f13e4f/63ebe1eaf25f15c25c5b43a8b2954a8d?ytl=http%3A%2F%2Folindata.com%2Ftraining%2Fupcoming> > >
