DevOps for Azure

DevOps for Windows Azure –
Surviving Failure
Michele Leroux Bustamante
michelebusta@solliance.net

Michele Leroux Bustamante
Managing Partner
Solliance (solliance.net)
CEO and Cofounder
Snapboard (snapboard.com)
Microsoft Regional Director
Microsoft MVP
Author, Speaker
Pluralsight courses on the way!
Blog: michelebusta.com
@michelebusta

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If it’s not there
you can’t see it

Logs
 IIS Logs




HTTP Errors
Redirects
Internal Server Errors

 Windows Event Logs (Cloud Service Only)
 Performance Counters




Memory, CPU, Disk Access, Requests
Custom Counters (Cloud Service Only)

 Trace Logs


Trace.XXX()

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Setting up Web Site Logging

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Site Diagnostics

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Application Logs

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Setting up Cloud Service Logging
 Programmatically





During role initialization
Enable diagnostics and storage transfer settings
Enable windows logs
Enable performance counters

 WADcfg (preferred)



Used to be XML raw
Now VS has user experience

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Managing Logs
 What if you have many sites and cloud services


Aggregate into single table

 You’ll need filters




By application
By type of log
By deployment

 Can create filters with management tool


I.e., Cloud Storage Studio

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Encapsulate Logging
 Simplify logging for the developer
 Create a DiagnosticsHelper




Methods for Debug, Info, Warning, Exception tracing
Methods for throwing exceptions throughout application
A method for serious exceptions, send email on exception to admin

 Be sure to swallow DiagnosticHelper exceptions


Logging should not introduce new issues, wrap that up!

 Can be shared



Web Sites
Cloud Services

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ETW is fast
DO NOT be afraid to use it

Event Tracing for Windows (ETW)
 Part of the Windows operating system since Windows 2000


Tools have improved significantly since then

 Tools for developers, for IT and for customers to work with
 Highly efficient tracing mechanism with decoupled architecture
 Enable or disable dynamically


No application restarts required

 Available to Azure Cloud Services and Web Sites


Trace.XXX()

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ETW Tracing Components
ETW Consumer
Application

Events
(Persisted)

Events
(Real-Time)

Trace
Logs

Events

Enable/
Disable

ETW Session

ETW
Controller

Trace
Events

Trace
Events

Event
Provider
A

Event
Provider
B

Application

Associate
Providers with
Session

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If you don’t look
you won’t know it’s there

Monitoring
 Performance Counters




Memory
CPU
Requests

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Notably missing: RFC 418!!!!

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Service Levels and Reports
 Customers want proof of SLA compliance
 Your average up time measured monthly




Not including scheduled downtime
Sometimes scheduled downtime is limited
99.95 availability is typical

 Your average request time measured monthly




Should exclude special services/page (i.e. data upload, large reports)
2s per request average is usually desired, an SLA may state 5s (whew)

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Analytics Products to Consider








Azure Portal (built in)
Paraleap
Stackify
NewRelic
Pingdom
Right Scale
JumpCloud

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It all comes down to
one thing…

References
 Conference resources:


http://michelebusta.com

 See my snapboards:




Currently at the alpha site:
http://snapboardalpha.cloudapp.net/michelebusta
Will move these to snapboard.com/michelebusta when we go live on the
main site (SOON watch my blog for announcement)

 Contact me:



@michelebusta

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