Oreilly Webcast Jun17

Step-by-step MySQL Clustering Setup Presented by Sean Hull, a business and technology consultant, author & speaker

Cluster Sandbox Setup
Download standbox - severalnines.com
Unpackage sandbox
Download cluster mysql distro
Use dist-tgz.sh to expand cluster distro
Run bootstrap.sh
Run start-cluster-initial.sh
Set PATH variable

MySQL Cluster - What
NDB storage engine
mysqld - ports 3306, 3307
Sql servers, private InnoDB & MyISAM tables
ndbd - port 1186
Cluster nodes, port 1186
ndb_mgmd
Monitor cluster nodes, start, stop, read conf

NDB Cluster Diagram

Management
Start
ndb_mgm -e "all start"
Stop
ndb_mgm -e "all stop"
Status
ndb_mgm -e "all status"

Configuration
my.cnf
ndbcluster
ndb-connectstring=localhost:1186
config.ini
[NDB_MGMD]
Id
PortNumber
Hostname

Performance
Slow performance w/large transactions
Slow performance of joins
Slow performance of range scans

Limitations
Db size limited to available memory
No text or blob datatypes
No fulltext indexes
No temporary tables
Only read-committed transactions
No “durability” of commits (backups!)
No foreign keys supported
No deadlock detection
Reads are locking!

NDB Join Test
Create table t - 5000 rows
Create myisam_a and myisam_b
Insert 5000 rows in each from t
Create innodb_a and innodb_b
Create ndb_a and ndb_b

Performance Differences
Three different insert times
Three identical join queries
Three different execution times

Expert Comments
Quote from High Performance MySQL

Further Reading - Books
High Performance MySQL 2nd Ed. - Schwartz,Zaitsev, Tkachenko, Zawodny, Lentz, Balling - O’Reilly
Pro MySQL - Kruckenberg & Pipes - Apress

Further Reading - Web
Video: Googly MySQL - Stewart Smith
Johan Andersson’s Cluster & HA Blog

Conclusion
Unique take on database clustering
Consider features/limiations
Test, test & test some more
Future looks bright for NDB Cluster

Questions
Cluster w/Master + Slave Replication
UTF8 & UTF16 issues

Thank You
Sean Hull <hullsean@gmail.com>
Founder, Senior Consultant
Heavyweight Internet Group
www.iheavy.com
Ph: +1-866-268-9448
Blog: www.oracleopensource.com
www.linkedin.com/in/hullsean

Oreilly Webcast Jun17

by Sean Hull on Feb 05, 2010

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Oreilly Webcast Jun17 — Presentation Transcript