Monitoring MySQL with MONyog - Percona...‹#› This Webinar • MONyog Basics • Percona Advisors for Monyog • Installation • Feature Overview • Practical Usage Tips • Live

Peter Zaitsev, CEO, Percona

Percona Technical Webinars March 19, 2014

Monitoring MySQL with MONyog

www.percona.com‹#›

This Webinar

• MONyog Basics • Percona Advisors for Monyog • Installation • Feature Overview • Practical Usage Tips • Live Demo • Questions


About MONyog

• Monitoring solution for “MySQL” Server • MySQL • Percona Server • Amazon RDS • MariaDB

• Agentless design • On Premises Solution • Simple to Use • Monitors MySQL and Operating System


MONyog as a Platform

• Powerful extension possibility through JavaScript • Graphing/Trending • Advisors • Alerting • Dashboard


Percona Advisors for MONyog

• Custom Advisors and Monitors created by Percona Team

• Additional Metrics • Tailored advice to modern realities and

best practices • Ever-improving part of Support

Subscription


Single Throat to Choke

• Available as solution to Percona Gold/Platinum Support Customers

• We will provide • Installation Help • Advice on Monitoring and

Interpretation • Handle bug fixes and Feature requests

• Working with MONyog team as a partner


Installation


Customer Portal

• Log in to https://customers.percona.com to see download instructions

https://customers.percona.com/


Install the “Platform”

• Simple one RPM install on Linux


Install Percona Advisors

• Download and unpack the archive • Need to have Stock MONyog adviser in

order for process to work


Restart the Service

• Needed to refresh advisors from the database


Log In

• Things to Know • Default MONyog port is 5555 • Default user name is “admin” • Default Password is Empty

• Watch the firewall!


Adding the Server


Things to note

• MONyog can use SSH Tunnel to reach MySQL with no direct access

• Use SSH connection to capture OS metrics and access logs

• Consider Configuring email in Notification Settings to get Alerts by Email • Mail settings must be configured with

SMTP server as well


Email alert example


Advanced Settings


Advanced Configuration

• Collection Interval • Consider 1 minute for better resolution

• Data retention time frame • Increase to keep data longer

• Beware database growth when having many servers


Configuring Log Files

• Configure MySQL Server Error log and Slow Query Log Paths • Will not be autoconfigured!


Sniffer

• Track queries server is running, store as history

• Can use PROCESSLIST and MySQL Proxy • No Support for Log file or

PERFORMANCE_SCHEMA • Very valuable information but can be costly to

capture • Provides additional information in Wayback

Machine


Deadlocks

• Enable to capture Innodb Deadlock information


Monitors

• Enable “Linux” if want to see OS Information


Feature Tour


Dashboard

• View Most important data side by side


Real Time Monitoring

• Watch Real Time server operation • PROCESSLIST Based

• Aggregated data by accessed tables, databases, users etc

• Locking information from Innodb Information Schema Tables


Real Time Example

• Queries for last few minutes


Processlist

• Look at Current Processlist • Look at several servers with one view • Can EXPLAIN or Kill running Queries


Replication

• Watch basic replication status • Shows Seconds_Behind_Master for

replication lag monitoring


Query Analyzer

• Analyze queries from MySQL Logs, or “Sniffer”

• Will only analyze about last 1MB of the slow log file by default

• Configure “Change Filter” to analyze more and configure other settings


Query Analyzer Example

• Note queries will be shown with “?” • SELECT c from sbtest where id between ? and ?;”


Server Configuration

• Compare Server configuration • Servers side by side

• Server to the Previous configuration information


Server Configuration

• Looking at what has changed over time


Disk Information

• Get disk usage information from INFORMATION_SCHEMA • Beware it can be slow if

innodb_stats_on_metadata is enabled

• Can drill down to see usage by database and table

• Only Database space usage • Not log files, binary logs etc.


Disk Usage


Events

• Summary of “Events” as reported by Advisors

• Can view current state and History • “Close” Warning/Critical alerts to

acknowledge them


Wayback Machine

• Track what has been happening with Server through Time

• Information about • Number of threads connected • Queries (with Sniffer enabled) • Status counters • Changes to Global Variables

• Can select interval on graph to Zoom in


Queries

• Note it is only query which could be sampled from PROCESSLIST • Thousands of quick queries were

unseen


Status Variables


Monitors

• Majority of Functionality is here • Monitors purposes

• Show current state • Information available for trending • Provide actionable advice • Generate Alerts when certain

conditions are met


Monitors Example


Monitoring Timeframe

• “Current” – information from MySQL start till now

• “Delta” • Information for 1 data capture interval

• “History” • Information for selected period of time


Detailed History Reports

• Specify Time Frame and Grouping Interval • Will See Data in the Table And

Histogram view


Trending the Value

• View history for last several data captures • Refreshes with new data


Advisor Information

• Provides the Description, Advice and Further Reading information


Customize Advisors

• Can change and define customize advisors with JavaScript


“Advanced Customization”

• Configure Numeric “Levels” for Alerts


Practical Usage Tips


Day to day Operations

• Enable Email Alerts for what is important for your application

• Dashboard Provides great overview for general server health and load

• Processist can be used to visually watch for surprises • Too many active queries • Some overly slow queries


When something goes wrong

• Server Load is likely to change • Changes on Dashboard ? • Weird looking “Processlist” ?

• Look at “Linux” advisors series to see load on OS level

• Check out Way Back Machine to see changes to the query pattern

• Check “Server Config” for possible unexpected changes


DEMO!


!Special Discount for Webinar Attendees:

Use Code WebinarSC to receive 15% off of standard rates (new registrations only)

!http://bit.ly/MySQLUC2014

!!!


Now with Open Source Appreciation Day!

• March 31, 2014 • http://bit.ly/1gysW6B

• Two Events To Chose From • CentOS Dojo • OpenStack Today

• Attendance is FREE

http://bit.ly/1gysW6B

www.percona.com‹#› www.percona.com

Peter Zaitsev [email protected]

Thank You!

Documents

Monitoring MySQL with MONyog - Percona...‹#› This Webinar • MONyog Basics • Percona Advisors for Monyog • Installation • Feature Overview • Practical Usage Tips • Live