MySQL high availability power and usability

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Giuseppe Maxia presents on MySQL high availability using Continuent Tungsten. He discusses how Tungsten provides transparency and ease of use for database users by enabling features like easy and automated failover between database servers. It allows applications to continue working without changes even during a failover. Tungsten also makes it easy to manage high availability across multiple database sites. The presentation covers how Tungsten installations work and demonstrates high availability configurations for both single and multiple sites.

Technology

MySQL High Availability
Power and Usability
Giuseppe Maxia
QA Director - Continuent, Inc

©Continuent 2012.

Wednesday, December 05, 12 1

About me
• Giuseppe Maxia, a.k.a. The Data Charmer

• Worked in the MySQL team (2006-2010)
A
• Now QA Director, Continuent, Inc

• Using MySQL since 2001

• Creator and maintainer of MySQL Sandbox

• Community Contributor of the year (2006, 2011)

• Oracle ACE (2011)

• Oracle ACE Director (2012)

• BLOG: http://datacharmer.blogspot.com
Wednesday, December 05, 12 2

ToC

• What a demanding database user wants
• easy switch

• easy and automated failover

• easy recovery

• disaster recovery stand-by site

• easy site switch and failover

• easy site recovery

• What Continuent Tungsten does
• all of the above

©Continuent 2012 3

Wednesday, December 05, 12 3

What's an EASY failover

• A failover or switch is EASY if:
• I can promote a slave easily

• I can tell easily the other slaves who is new master

• I can get a failover to happen automatically

• Applications keep working without changes

• Failovers only happen when the server is truly dead

©Continuent 2012 4

Wednesday, December 05, 12 4

Translation: What a DB user wants is:

• Transparency
Or

• the ability of using a RESILIENT database
system without need to know what's going on

©Continuent 2012 5

Wednesday, December 05, 12 5

How a non-HA system works
App Logic

MySQL Client API
W

master

slave slave

R R

load balancer

©Continuent 2012 6

Wednesday, December 05, 12 6

How a non-HA system works (after a
switch)
App Logic

MySQL Client API
W
?
master

switch

slave slave

R R ?
load balancer

©Continuent 2012 7

Wednesday, December 05, 12 7

App Logic App Logic

Tungsten Connector Tungsten Connector

Monitoring and control
Monitoring and control

db2 db1 db3
Manager Manager Manager

Replicator Replicator Replicator

Slave Master Slave
Data Service: sj
©Continuent 2012 8

Wednesday, December 05, 12 8

How a Tungsten HA system works
App Logic

MySQL Client API
W

R
load balancer
R

©Continuent 2012 9

Wednesday, December 05, 12 9

How a Tungsten HA system works
App Logic

MySQL Client API
W

switch

R
load balancer
R

©Continuent 2012 10

Wednesday, December 05, 12 10

Multiple site demo

©Continuent 2012 11

Wednesday, December 05, 12 11

Installation principles

• Install from one location only

• Remote installation of all services

• No partial installations: Either all servers are
OK, or none will be installed

• Parallel installation

©Continuent 2012 12

Wednesday, December 05, 12 12

What does the installation do

1: Validate all servers

host4 host1 host2 host3

Report all errors

©Continuent 2012. 13

Wednesday, December 05, 12 13

What does the installation do

1: (again) Validate all servers

host4 host1 host2 host3

©Continuent 2012. 14

Wednesday, December 05, 12 14

What does the installation do

2: install Tungsten in all servers
host4
$CONTINUENT_ host1
HOME/ host2
config/ host3
releases/
backups/
thl/
tungsten/

©Continuent 2012. 15

Wednesday, December 05, 12 15

Installation demo

©Continuent 2012. 16

Wednesday, December 05, 12 16

Standard HA system demo

©Continuent 2012 17

Wednesday, December 05, 12 17

How a "smart scale" Tungsten HA
system works

W
App Logic MySQL Client API R
R

©Continuent 2012 18

Wednesday, December 05, 12 18

Standard HA "smart scale" system
demo

©Continuent 2012 19

Wednesday, December 05, 12 19

How a multi site (non HA) system
works
App Logic

MySQL Client API
W

master relay

slave
slave slave slave

R R

load balancer

©Continuent 2012 20

Wednesday, December 05, 12 20

How a multi site (non HA) system
works
App Logic

MySQL Client API
W

master relay

slave
slave slave slave

R R

load balancer

©Continuent 2012 21

Wednesday, December 05, 12 21

How a multi site (non HA) system
works
App Logic

MySQL Client API
W

master relay

slave
slave slave slave

R R

load balancer

©Continuent 2012 22

Wednesday, December 05, 12 22

How a multi-site Tungsten system
works App Logic

MySQL Client API
W

R R

load balancer

©Continuent 2012 23

Wednesday, December 05, 12 23

How a multi-site Tungsten system
works App Logic

MySQL Client API
W

R R

load balancer

©Continuent 2012 24

Wednesday, December 05, 12 24

How a multi-site Tungsten system
works App Logic

MySQL Client API
W

R R

load balancer

©Continuent 2012 25

Wednesday, December 05, 12 25

Parting thoughts

• The key elements of HA are:
• transparency
• ease of use
• Continuent Tungsten
• makes cluster usage transparent
• o!ers automatic failover
• makes cluster management easy
• deals with multiple sites with great ease

©Continuent 2012. 26

Wednesday, December 05, 12 26

560 S. Winchester Blvd., Suite 500 Our Blogs:
San Jose, CA 95128 http://scale-out-blog.blogspot.com
Tel +1 (866) 998-3642 http://datacharmer.blogspot.com
Fax +1 (408) 668-1009 http://ﬂyingclusters.blogspot.com
e-mail: sales@continuent.com

Continuent Website:
http://www.continuent.com

Tungsten Replicator 2.0:
http://code.google.com/p/tungsten-replicator

©Continuent 2012 27

Wednesday, December 05, 12 27

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MySQL high availability power and usability

1. MySQL High Availability Power and Usability Giuseppe Maxia QA Director - Continuent, Inc ©Continuent 2012. Wednesday, December 05, 12 1

2. About me • Giuseppe Maxia, a.k.a. The Data Charmer • Worked in the MySQL team (2006-2010) A • Now QA Director, Continuent, Inc • Using MySQL since 2001 • Creator and maintainer of MySQL Sandbox • Community Contributor of the year (2006, 2011) • Oracle ACE (2011) • Oracle ACE Director (2012) • BLOG: http://datacharmer.blogspot.com Wednesday, December 05, 12 2

3. ToC • What a demanding database user wants • easy switch • easy and automated failover • easy recovery • disaster recovery stand-by site • easy site switch and failover • easy site recovery • What Continuent Tungsten does • all of the above ©Continuent 2012 3 Wednesday, December 05, 12 3

4. What's an EASY failover • A failover or switch is EASY if: • I can promote a slave easily • I can tell easily the other slaves who is new master • I can get a failover to happen automatically • Applications keep working without changes • Failovers only happen when the server is truly dead ©Continuent 2012 4 Wednesday, December 05, 12 4

5. Translation: What a DB user wants is: • Transparency Or • the ability of using a RESILIENT database system without need to know what's going on ©Continuent 2012 5 Wednesday, December 05, 12 5

6. How a non-HA system works App Logic MySQL Client API W master slave slave R R load balancer ©Continuent 2012 6 Wednesday, December 05, 12 6

7. How a non-HA system works (after a switch) App Logic MySQL Client API W ? master switch slave slave R R ? load balancer ©Continuent 2012 7 Wednesday, December 05, 12 7

8. App Logic App Logic Tungsten Connector Tungsten Connector Monitoring and control Monitoring and control db2 db1 db3 Manager Manager Manager Replicator Replicator Replicator Slave Master Slave Data Service: sj ©Continuent 2012 8 Wednesday, December 05, 12 8

9. How a Tungsten HA system works App Logic MySQL Client API W R load balancer R ©Continuent 2012 9 Wednesday, December 05, 12 9

10. How a Tungsten HA system works App Logic MySQL Client API W switch R load balancer R ©Continuent 2012 10 Wednesday, December 05, 12 10

12. Installation principles • Install from one location only • Remote installation of all services • No partial installations: Either all servers are OK, or none will be installed • Parallel installation ©Continuent 2012 12 Wednesday, December 05, 12 12

13. What does the installation do 1: Validate all servers host4 host1 host2 host3 Report all errors ©Continuent 2012. 13 Wednesday, December 05, 12 13

14. What does the installation do 1: (again) Validate all servers host4 host1 host2 host3 ©Continuent 2012. 14 Wednesday, December 05, 12 14

15. What does the installation do 2: install Tungsten in all servers host4 $CONTINUENT_ host1 HOME/ host2 config/ host3 releases/ backups/ thl/ tungsten/ ©Continuent 2012. 15 Wednesday, December 05, 12 15

18. How a "smart scale" Tungsten HA system works W App Logic MySQL Client API R R ©Continuent 2012 18 Wednesday, December 05, 12 18

20. How a multi site (non HA) system works App Logic MySQL Client API W master relay slave slave slave slave R R load balancer ©Continuent 2012 20 Wednesday, December 05, 12 20

21. How a multi site (non HA) system works App Logic MySQL Client API W master relay slave slave slave slave R R load balancer ©Continuent 2012 21 Wednesday, December 05, 12 21

22. How a multi site (non HA) system works App Logic MySQL Client API W master relay slave slave slave slave R R load balancer ©Continuent 2012 22 Wednesday, December 05, 12 22

23. How a multi-site Tungsten system works App Logic MySQL Client API W R R load balancer ©Continuent 2012 23 Wednesday, December 05, 12 23

24. How a multi-site Tungsten system works App Logic MySQL Client API W R R load balancer ©Continuent 2012 24 Wednesday, December 05, 12 24

25. How a multi-site Tungsten system works App Logic MySQL Client API W R R load balancer ©Continuent 2012 25 Wednesday, December 05, 12 25

26. Parting thoughts • The key elements of HA are: • transparency • ease of use • Continuent Tungsten • makes cluster usage transparent • o!ers automatic failover • makes cluster management easy • deals with multiple sites with great ease ©Continuent 2012. 26 Wednesday, December 05, 12 26

27. 560 S. Winchester Blvd., Suite 500 Our Blogs: San Jose, CA 95128 http://scale-out-blog.blogspot.com Tel +1 (866) 998-3642 http://datacharmer.blogspot.com Fax +1 (408) 668-1009 http://ﬂyingclusters.blogspot.com e-mail: sales@continuent.com Continuent Website: http://www.continuent.com Tungsten Replicator 2.0: http://code.google.com/p/tungsten-replicator ©Continuent 2012 27 Wednesday, December 05, 12 27

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