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Javier Tomás Zon Platform Reliable Engineer
High Availability com MySQL Percona XtraDB Cluster
Oct, 2015
www.percona.com
Database Performance Consultants
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Percona
MySQL
MongoDB
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Percona Supports
• MySQL • MySQL • MariaDB • Percona Server • MySQL NDB
• Galera Cluster • Percona XtraDB Cluster • MariaDB Cluster
• MongoDB • TokuMX • Percona Server for MongoDB
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Percona Products
• MySQL • Percona Server (MySQL) • Percona Toolkit • Percona XtraDB Cluster • Percona Xtrabackup • Many more...
• MongoDB • Percona Server for MongoDB • TokuMX SE • More coming...
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Agenda
• Who am I?
• Scaling MySQL
• PXC #newconcept
• Simple demo
• Q&A
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Who am I?
• @jtomaszon (gmail, github, facebook, twitter)
•12 years of System Administration
• 8 years working with MySQL
• 4 years working with DevOps culture
• ex-TOTVS
• One of 4 Platform Reliable Engineer
• IoT Enthusiastic (Arduino, Raspberry Pi)
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MySQL is not web scale
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Scale MySQL
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Percona XtraDB Cluster
• What is: • Is MySQL binary + a Galera lib • Is High Available solution for MySQL • One way to scale your DB Layer
• What is NOT: • NOT Oracle MySQL Cluster • NOT Drop-in MySQL replacement
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Cluster as a meeting• All current cluster members are in the room
• They all hear what is happening
• New members must be brought up to speed (SST)
• State Snapshot Transfer
• Members that leave temporarily must be caught up (IST)
• Incremental State Transfer
• Only members in the room count in the cluster
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Node Types
• Data Nodes • mysqld
• Galera (shared library in mysqld)
• Arbitrator Nodes • just Galera
• replication, no mysqld
• No controllers, admin, config nodes
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Node failure
• Node failure == timeout • writes pause
• Split brain protection
• Only the majority of the cluster
will continue
• Minority will refuse queries
• All-down needs “bootstrap"
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Scaling MySQL
Reads & Writes
Reads
synchronous replication
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Demo!
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Questions?
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Links• Percona Blog
• https://www.percona.com/blog/
• Percona YouTube Channel
• https://www.youtube.com/user/PerconaMySQL/videos
• A Nice quiz for PXC:
• https://goo.gl/ESVFGY
• Thanks to my mentors: Max Bubenick and Jay Janssen
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Questions?
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Thank You!
