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MySQL HA with PaceMaker Kris Buytaert
Kris Buytaert ,[object Object]
„ Infrastructure Architect“
I don't remember when I started using MySQL :)
Specializing in Automated , Large Scale Deployments , Highly Available infrastructures, since 2008 also known as “the Cloud”
Surviving the 10 th  floor test
DevOp
In this presentation ,[object Object]
MySQL HA Solutions
MySQL Replication
Linux HA / Pacemaker
What is HA Clustering ? ,[object Object]
Not  designed for high-performance
Not designed for high troughput (load balancing)
Does it Matter ? ,[object Object]
You mis out on $$$
Your boss complains
New users don't return
Lies, Damn Lies, and Statistics Counting nines (slide by Alan R)
The Rules of HA ,[object Object]
Keep it Simple
Prepare for Failure
Complexity is the enemy of reliability
Test your HA setup
You care about ? ,[object Object]
Realitime
Eventual Consistent  ,[object Object],[object Object]
Most of the time
Eliminating the SPOF ,[object Object]
Fans
Power (Supplies) ,[object Object],[object Object]
Going Out Of Memory
Split Brain ,[object Object]
If those partitions each try and take control of the cluster, then it's called a split-brain condition
If this happens, then bad things will happen ,[object Object]
Historical MySQL HA ,[object Object]
Multiple read only nodes
Application needed to be modified
Solutions Today ,[object Object]
DRBD
MySQL Cluster NDBD
Multi Master Replication
MySQL Proxy
MMM
Flipper
Data vs Connection ,[object Object]
DRBD ,[object Object],[object Object]
Proxy
Heartbeat / Pacemaker

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