MySQL for MongoDB DBAs

Alexander Rubin Principal Architect, Percona May 29, 2015

www.percona.com

About Me

• Working with MySQL for over 10 years – Started at MySQL AB, then Sun Microsystems, then Oracle (MySQL Consulting) – Joined Percona 2 years ago

https://www.linkedin.com/in/alexanderrubin

www.percona.com

My S-Q-L not "My Sequel”Everyone is using MySQL for at least some project?

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/etc/my.cnf• Single config file: /etc/my.cnf or /etc/mysql/my.cnf • https://tools.percona.com/wizard

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“Storage Engines”

••MMAPv1 ••WiredTiger ••TokuMX

••MyISAM •• InnoDB ••TokuDB

Your choice

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HA and Scale-out

••Replication

••Sharding

••Replication/XtraDB cluster

••Sharding* (different solutions)

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MySQL ReplicationSimilar to MongoDB replication

Database

Master Server

Database

Slave Server

MySQL Replication

Search

Reporting

Etc

Database

Slave Server

Database

Slave Server

Database

Slave Servers

Load Balancer

Database

Master Server

Database

Master Server

Database

Slave Server

Database

Slave Server

MySQL Replication

Search

Reporting

Etc

Database

Slave Server

Database

Slave Server

Database

Slave Server

Database

Slave Server

Database

Slave Servers

Database

Slave Servers

Load BalancerLoad Balancer

No automatic failover by default

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Inside MySQL Replication

Web/AppServerWeb/AppServer

Writes & Reads

MySQL Master

I/O Thread

SQL Thread

Writes

relay binlog

MySQL Slave

mysqld

data

index & binlogs

mysqld

databinlogReplication

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MySQL Replication TopologiesMaster > Slave

Masters > Slave (Multi-Source)

Master < > Master (Multi-Master)

Master > Slaves

Circular (Multi-Master)

Master > Slave > Slaves

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Percona XtraDB Cluster

• Scale reads • Provides HA • Does NOT

scale writes

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HA and Scale-out

••w: 1

••~ w: 2

••~ w: 3, j: true (on all nodes)

••Replication (default)

••~ Semi-sync (with 1 slave)

••~ Percona XtraDB Cluster

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MySQL Sharding options

• No default solution everyone is using • Custom solutions • MySQL Fabric, open-source

http://dev.mysql.com/doc/mysql-utilities/1.5/en/fabric.html Beta version

• MaxScale, open-source https://mariadb.com/products/mariadb-maxscale

• Other enterprise Sharding solutions

www.percona.com

More Info

• docs.mongodb.org

• Mtools/mongostat

• MMS

••Dev.mysql.com

••Percona Toolkit (https://www.percona.com/software/percona-toolkit)

••cloud.percona.com

www.percona.com

Thank you!

https://www.linkedin.com/in/alexanderrubin

Alexander Rubin