WHO ARE YOU???

WHO ARE YOU???• Clint Alexander• Lancaster County, PA• Married, 3 Children

MYSQL-PROXY: THE PROXY BELT

Clint Alexander <clint@cdalexaneder.net>

• Internet Technologist• IT Contractor• 10 year Professional• MySQL Power User

Web Administration

Web Application Developer

Network Architect

Brainbench CIPCertified Internet Professional

Systems Administration

Interactive Developer

LuaLingo

Expect

Action ScriptVisual Basic

Project Management

WHY ARE WE HERE?

WHY ARE WE HERE?TO DESIGN FAIL-SAFE SYSTEMS

WHAT IS THAT?

WHAT IS THAT?HIGH AVAILABILITY!

uhh…

uhh…Keeping your services available 99.9% OF THE TIME.

LET’S SET SOME REQUIREMENTS…

Maximize Cost-Effectiveness

Design Simple Management

Redundancy & Fail-Over

Maintain Optimal Performance

Minimize Dependencies

No Single Point of Failure

WHAT’S THE OBJECTIVE?

• Maximize Cost-Effectiveness• Design Simple Management• Create Redundancy & Fail-Over• Maintain Optimal Performance• Minimize Dependencies• No Single Point of Failure

LET’S TALK SCALING

SCALING UP

= More RAM= Fast CPU= Fast SCSI= Fast Bus

Result?

SUPER DUDE!(err… Server)

SCALING OUT

Take 1 fish…

Add lots more.

Standard Web

Service Setup

Where should requests go now?

SimpleScale-OutSolution

Requests still fulfilled

(whew!)

SINGLE GATEWAY DESIGNS

SPOF DETECTED!Single Point of Failure

Great For

• Development Networks• Low-Visibility Services• Low-Availability Services

DUAL GATEWAY DESIGNS

SOFTWARE REQUIRED!•Heartbeat Service•Switching Mechanism

Great For

• Production Networks• High-Visibility Services• High-Availability Services

THE PROXY BELT

“Strap-On” MySQL-Proxy

AUTONOMOUS DESIGN

Self-Reliant Systems

• Maximize Cost-Effectiveness• Design Simple Management• Redundancy & Fail-Over• Maintain Optimal Performance• Minimize Dependencies• No Single Point of Failure

REQUIREMENTSREQUIREMENTSREVIEWREVIEW

What’s the objective?

COST-EFFECTIVENESS?

• No Additional Hardware• No Additional

Installations• No Additional Software• No Additional Labor

Saving $5K – $10K

Maximum Cost-Effectiveness• Simple Management• Redundancy & Fail-Over• Maintain Optimal Performance• Minimize Dependencies• No Single Point of Failure

DESIGN SIMPLE MANAGEMENT?

• Servicing the Clients Relative to the purpose and configuration of

the clients• Servicing MySQL

Multiple GUI Administration Options• Servicing Proxy

Easy & Minimal Configuration

Simple Management, in this case, means management of a service required within the network is minimized by its lack of dependents and complexity of its configuration.

REQUIREMENTS REVIEW

Maximum Cost-EffectivenessSimple Management• Redundancy & Fail-Over• Maintain Optimal Performance• Minimize Dependencies• No Single Point of Failure

REDUNDANCY & FAIL-OVER?

• Failure to Client Server DNS Round-Robin (other?)

• MySQL Services Managed by Lua & Proxy connection

pooling

• Failure to Proxy Service Crontabs and Notifications!

Maximum Cost-EffectivenessSimple ManagementRedundancy & Fail-Over• Maintain Optimal Performance• Minimize Dependencies• No Single Point of Failure

MAINTAIN OPTIMAL PERFORMANCE?

• MySQL Proxy is light-weight and transparent

• Lua is a well-known light-weight API

Footprint = 0 (zero)

Maximum Cost-EffectivenessSimple ManagementRedundancy & Fail-OverMaintain Optimal Performance• Minimize Dependencies• No Single Point of Failure

MINIMIZE DEPENDENCIES?

• Users are dependent on available client systems

• Clients are dependent on available Proxy services

• Proxy is dependent on available MySQL servers

No Extra Dependencies RequiredClint Alexander <clint@cdalexaneder.net>

Maximum Cost-EffectivenessSimple ManagementRedundancy & Fail-OverMaintain Optimal PerformanceMinimize Dependencies• No Single Point of Failure

NO SINGLE POINT OF FAILURE?

• Fail-over Requires: Minimum: 2+ Clients Minimum: 2+ Proxies Minimum: 2+ Databases

Maximum Cost-EffectivenessSimple ManagementRedundancy & Fail-OverMaintain Optimal PerformanceMinimize DependenciesNo Single Point of Failure

That’s the objective!

WAIT!!DIDN’T WE SAY SOMETHING ABOUT

A CRON SCRIPT?

MANAGABLE CONFIGURATION FILEAssumed Location: /etc/mysql-proxy/mysql-proxy.conf

CRON SCRIPT

Assumed Location: /opt/mysql-proxy/sbin/proxychk.cron

STARTUP SCRIPT

Assumed Location: /etc/init.d/mysqlproxy

52Clint Alexander <clint@cdalexaneder.net>

http://www.cdalexander.net/mysql.php

Want a copy?

All material is or will be posted here.

Feel free to contact me directly:Clint Alexander <clint@cdalexander.net>

WHO ARE YOU???

Documents

Transcript of WHO ARE YOU???

Who Are You ??

Who you are?

you are who you are..I Am who I Am..

Who are we? Who are you?

The Voice Who Are You?. My awesome 486 computer Who are you?

Are you really who you say you are?

Identity Who Are You?. Who are you? How do I know about you?

WHO ARE YOU? - CIVIL IDENTITY - WHO YOU ARE

Who You Are

Who are you

Who are you ???

Who Are You?

WHO ARE YOU?

Gisondi ACGME Know Who You Are, Be Who You Are, Show Who You Are

Who are you????

Ephesians 4:1-16 Who you are is not who you think you are Who you are is who God says you are.

3. Who Are You? Week 3dn-tuntun.ktcdn.co.kr/download/LDB_Book_3_PDF.pdfWeek 3 3. Who Are You? Week 3 3. Who Are You? Week 3 3. Who Are You? Week 3 3. Who Are You? Week 5 3. Who Are

Hashing and Authentication - Courses Hashing & Authentication Hashing and Authentication Well, who are you? (Who are you? Who, who, who, who?) I really wanna know (Who are you? Who,