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รู้จักกับ MySQL Cluster กตตรักษ์ ม่วงม่งสุข (Kittirak Moungmingsuk) [email protected] May 19, 2012 @ossfestival #11

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Page 1: รู้จักกับ MySQL ClusterNDB Storage Engine MySQL Cluster Features In-Memory Vs. Disk-Bases Monitoring Tools 7 MySQL Review Latest stable version is 5.5 Written in

รูจ้ักกับ MySQL Cluster

กิตติรักษ ์ม่วงมิ่งสุข(Kittirak Moungmingsuk)[email protected] 19, 2012 @ossfestival #11

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`whoami`A part of team at Cluster Kit Co.,Ltd. Since 2007.Adjacent Lecturer at Rajamangala University of

Technology Thanyaburi (RMUTT)About Cluster Kit

We have the technological know-how and experience necessary in the high performance computing

Our Service including Implementation & Training

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ThaiGrid (Tera Cluster)800 Cores, Linux Cluster133 Cores, Win Cluster

Sila Cluster @Ramkhamhaeng U. 286 Cores BIOTEC (Eclipse Cluster) 704 Cores Virgin Radio Thailand

7 nodes, Web ClusterGeo-Informatics and Space Technology Development Agency (GISTDA)

10 nodes, Web ClusterHAII (HAII Cluster I, II) 480 Cores

Cluster Kit: Achievement

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Out of Scope, Related AEC.

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Agenda

Quick review MySQLMySQL Cluster ConceptWhat's MySQL Cluster Do?

Load BalanceHigh Availability

NDB Storage EngineMySQL Cluster FeaturesIn-Memory Vs. Disk-BasesMonitoring Tools

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MySQL Review Latest stable version is 5.5Written in C and C++. Works on many different platforms.Designed to be fully multi-threaded using kernel threadsSupport for large databases

200,000 tables and about 5,000,000,000 rows. supports high-availability database clustering using the

NDBCLUSTER storage

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MySQL Development Roadmap

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Storage Engines

MyISAMInnoDBNDBCLUSTER

MemoryMergeArchiveFederatedCVSBlackholeExample

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MyISAM

The default MySQL storage engine supported in all MySQL configurationsdefault storage engine unless you have configured

MySQL to use a different one by default.

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InnoDB

A transaction-safe (ACID compliant) Row-level locking Oracle-style consistent nonlocking reads increase

multi-user concurrency and performance. Stores user data in clustered indexes to reduce I/O for

common queries based on primary keys.Supports FOREIGN KEY referential integrity

constraints.

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NDBCLUSTER

known as NDBClustered database engine Particularly suited for applications that require the

highest possible degree of uptime and availabilityHigh Availabilitymission-critical 24/7 usage and heavy Web or

logging usage.

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MySQL Cluster

Enables clustering of both in-memory and on disk bases.

Shared-nothing architecture. No single point of failure.Storage engine called NDB or NDBCLUSTERLatest NDB 5.5.20-ndb-7.2.5

That's mean NDB 7.2.5, MySQL 5.5.20Both GPL License and Commercial

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In-memory Vs. Disk-Bases

In-MemoryFastest than DiskRequired more memoryFocus on real-time application

Disk-Base (Support on ndb-7.x up)Slower then MemoryWorking with larger dataCheapest in cost

Images from http://www.openclipart.org/

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MySQL Cluster Components

Management node (MGM node)Data nodeSQL node

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Scaling Out Configuration

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2 Node Groups Data Partitioning

Node Group 150%

ndb1

ndb2

Node Group 250%

ndb3

ndb4

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Multi-thread Data nodeSupport Maximum 8 threads per machine

Transaction Coordinator (TC) 1Transporter 1Replication 1

Local Query Handler (LQH)Access manager (ACC)Tuple Manager (TUP)

MaxNoOfExecutionThreads LQH Threads2 14 28 4

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Advantages

High availability and Load balancedHigh Throughput ScalabilityCan deploy with low cost hardware

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Disadvantages

Need many number of machines Difficult in configurationNot work with complex queryRequired high technical skill

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Disk Bases Table

Beginning with MySQL 5.1Disk based data does not support variable sized

storage.A disk-based table stores its data in a tablespace and

stores undo data in a log file group

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On-line add node 1

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On-line add node 2update config.ini

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On-line add node 3Rolling Restart

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On-line add node 4Repartition Data

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On-line add node 5Data Repartitioned

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Cluster Backup & Restore

Two mechanisms NDB native backupThe mysqldump program

NDB native backup not restorable to clusters running earlier or later versions.

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Limitation Cannot create indexes on NDB table columns that use

any of the TEXT or BLOB data types. Does not support FULLTEXT indexes The NDBCLUSTER storage engine supports only the

READ COMMITTED transaction isolation levelThere are no partial transactions, and no partial

rollbacks of transactions.MySQL Cluster does not handle large transactions wellTRUNCATE & LOAD DATA INFILE are non-

transactional and cannot be rolled back.

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CMON Web MonitoringCMON is a daemon that aggregates information from

MySQL Cluster that earlier was only accessible from the cluster log or the management client, such as: cluster state, node state, backup statistics, Statistics and Cluster events (cluster log basically)

CMON can also start ndbd nodes and make decisions on how they should be started (with or without --initial).

CMON also does analysis and suggests changes to mysql variables in case they are wrongly set.

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CMON Screen

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References & Recommended Site

http://dev.mysql.com/downloads/cluster

“MySQL Cluster 7.0: Architecture and New Features”. A MySQL® Technical White Paper by Sun Microsystems, April 2009.

Configurator for MySQL Clusterhttp://www.severalnines.com/config/

Principal Consultant, MySQL AB http://johanandersson.blogspot.com/

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“คอมพิวเตอร์มือสอง เพื่อน้องในชนบท”

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เกี่ยวกับโครงการ

กิจกรรมทำำอะไร ?รับบริจำคเครื่องคอมพิวเตอร์และอะไหล่ต่ำง ๆ มำประกอบเป็น

เครื่องที่สมบูรณ์ ติดตั้งระบบปฏิบัติกำรลีนุกซ์เพื่อกำรศึกษำ Edubuntu แล้วนำำไปส่งมอบให้โรงเรียน พร้อมทำำให้ทุกเครื่องเชื่อมต่ออินเทอร์เน็ตได้ ด้วยกำรวำงระบบเครือข่ำยให้กับทำงโรงเรียน

ทำำในรูปแบบไหน ?เป็นกิจกรรมที่รวมตัวกันทำำในกลุ่มเพื่อน ๆ คนคอมพิวเตอร์ที่

อยำกไปเที่ยว อยำกทำำดี

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เกี่ยวกับโครงการ (ต่อ)

ทำำมำแล้วกี่ครั้งจัดส่งมอบมำแล้วทั้งหมด 6 โรงเรียน รวมส่งมอบไปห้ำสิบกว่ำ

เครื่อง ติดตั้งระบบเครือข่ำยให้ 5 โรงเรียน เครื่องที่บริจำคสเปกแรงแค่ไหน

เครื่องที่ส่งไป RAM 512 MB. ฮำร์ดดิสก์รวมกันให้ได้ 6 GB. ก็เอำละ ก็ตำมคุณสมบัติขั้นตำ่ำที่ลง Edubuntu ได้ครับ (เรำจัดตำ่ำกว่ำที่เขำกำำหนด แต่ใช้ได้ครับ)

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Thank you.

Tweet to me at @kittirakDownload this presentation at

http://www.clusterkit.co.th/pdf/MySQL_Cluster_Ossfest11.pdf