tonight solomon chang proudly presents: mysql clustering welcome to the uuasc la chapter

TONIGHT

Solomon Changproudly presents:

MySQL Clustering

Welcome to the UUASC LA Chapter

NDB Cluster

High Availability* Shared-Nothing Architecture Redundancy

Server Requirements

Any machine that can run MySQL

Server Requirements

Any machine that can run MySQL

Non-Microsoft Operating System

Server Requirements

Any machine that can run MySQL

Non-Microsoft Operating System

A buttload of RAM

Types of Nodes

Data Nodes ndbd

Management Nodes ndb_mgmd

API Nodes mysqld ndb_mgm

Bits and Pieces

Partition (AKA Fragment) A portion of a table

Replica A copy of a Partition

Node Group A collection of individual data nodes

Security of Nodes

Security of Nodes

Authentication: None

Security of Nodes

Authentication: None Encryption: None

Security of Nodes

Authentication: None Encryption: None Management and Data Nodes

are very trusting as to who or what connects to them

Transports

Gigabit Ethernet Bare recommended minimum

SCI Scalable Coherent Interconnect

Infiniband

Performance

Primary Key are hashes

Performance

Primary Key are hashes Hashed values determine which rows

are distributed to which data nodes

Performance

Primary Key are hashes Hashed values determine which rows

are distributed to which data nodes Pushdown

Performance

Primary Key are hashes Hashed values determine which rows

are distributed to which data nodes Pushdown

Spreading query work across multiple data nodes

set engine_condition_pushdown = 1

Data Node Setup

In /etc/my.cnf:[MYSQLD]

ndbcluster

ndb-connectstring=10.0.0.152

[MYSQL_CLUSTER]

ndb-connectstring=10.0.0.152

Management Node Setup

config.ini sections [ndbd] [ndb_mgmd] [mysqld]

Management Node Setup

config.ini sections [ndbd] [ndb_mgmd] [mysqld]

Sections can be blank

Management Node Setup

config.ini sections [ndbd] [ndb_mgmd] [mysqld]

Sections can be blank There can be multiple instances

of a section

SQL Node Setup

Just like the Data Node Setup

In /etc/my.cnf:[MYSQLD]

ndbcluster

ndb-connectstring=10.0.0.152

[MYSQL_CLUSTER]

ndb-connectstring=10.0.0.152

SQL Node Setup

The Management Node already knows this is a SQL node from its config.ini file

Enough Talking

It's showtime

Cluster Replication

Cluster replication is exactly the same as regular MySQL replication, with the exception of the Binary Log Injection Thread.

Backup and Restoration

Why would a fault-tolerant, completely redundant system would ever need to have a backup for restoring data?

Disk-Based NDB Cluster

HA Caveat

SQL Nodes