Download - Joining up Agile and ITIL for DevOps success
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Joining up Agile and ITIL®
for DevOps success
In association with Unicom Seminars
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Agile (Scrum), ITIL®, DevOpsAligning Scrum and ITIL®
Focus on feedbackPractical steps for Agile + ITIL®
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Skelton ThatcherIntroduction and Services Overview
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‘Cloud’ changes the way we mustdesign, deliver, and operate
our software systems
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Changes for ‘cloud’
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Agile, ITIL®, DevOpsAligning Agile and ITIL®
Focus on feedbackPractical steps for Agile + ITIL®
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Terminology
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Agile
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AgileIterative, early delivery
Collaboration with stakeholdersRespond to changes“Working software”
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Jeff Patton, agileproductdesign.com
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Jeff Patton, agileproductdesign.com
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ITIL®
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ITIL®
A library of good practices for ITSMNot a prescriptive framework!
Continual improvementOngoing services, not finished s/w
ITIL® is a Registered Trade Mark of AXELOS Limited
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DevOps
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DevOpsPractices & approaches
Effective web-scale softwareThemes: Culture, Automation, Measurement, Sharing
Avoiding handover
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Not DevOps:“Automation”
“Build & Release”“Infrastructure Development”
“System Administration”
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DevOps“Highly effective, daily collaboration between
software developers and IT operations people to produce relevant, working systems” *
*also QA/Testing, IT Service Desk, Programme Management, Commercial, Marketing, etc.
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Agile, ITIL®, DevOpsA shared focus on working software
Iterative improvementCollaboration
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Agile, ITIL®, DevOpsAligning Agile and ITIL®
Focus on feedbackPractical steps for Agile + ITIL®
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Aligning Agile and ITIL®
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Feedback in Agile (Scrum)
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Feedback in ITIL®
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Agile and ITIL®
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Agile, ITIL®, DevOpsAligning Agile and ITIL®
Focus on feedbackPractical steps for Agile + ITIL®
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Focus on feedback
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Feedback for improved control
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Plan – Do – Check – Act
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Agile and ITIL®
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Mapping Agile & ITIL® to PDCA
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DevOps feedback
Gene Kim, http://itrevolution.com/the-three-ways-principles-underpinning-devops/
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DevOps feedback
Gene Kim, http://itrevolution.com/the-three-ways-principles-underpinning-devops/
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DevOps feedback
Gene Kim, http://itrevolution.com/the-three-ways-principles-underpinning-devops/
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Focus on feedbackFeedback is essential for effective software
Agile: feedback during devITIL®: feedback during operation
DevOps: feedback during dev and operation
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Agile, ITIL®, DevOpsAligning Agile and ITIL®
Feedback loopsPractical steps for Agile + ITIL®
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Practical steps for Agile + ITIL®
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Practical steps for Agile + ITIL®
Run Book collaborationChoose tools that encourage collaboration
Test early for operational readinessSingle product backlog
Keep changes smallRotate people through Dev and Ops teams
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Run Book / Ops Manual•Detailed description of how the system operates•Maintenance•Repair•Error recovery
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Run Book / Ops Manual• 1 Table of Contents
• 2 System Overv iew • 2.1 Serv ice Overv iew• 2.2 Contr ibu t ing Appl ica t ions, Daemons, and Windows Serv ices• 2.3 Hours of Opera t ion• 2.4 Execut ion Des ign• 2.5 In f ras t ructure and Network Des ign• 2.6 Res i l i ence, Fau l t To le rance and High -Ava i lab i l i ty• 2.7 Throt t l i ng and Par t ia l Shutdown• 2.8 Requ i red Resources• 2.9 Expected Tra f f ic and Load
• 2.9 .1 Hot or Peak Per iods• 2.9.2 Warm Per iods• 2.9 .3 Cool or Qu ie t Per iods
• 2.10 Env i ronmenta l D i f fe rences• 2.11 Too ls
• 3 Secur i ty and Access Contro l
• 4 System Conf igurat ion • 4.1 Conf igura t ion Management
• 5 System Backup and Restore • 5.1 Backup Requ i rements
• 5.1 .1 Spec ia l F i l es
• 5.2 Backup Procedures• 5.3 Restore Procedures
• 6 Moni tor ing and Aler t ing • 6.1 Er ror Messages
• 6.2 Events• 6.3 Hea l th Checks• 6.4 Other Messages
• 7 Operat ional Tasks • 7.1 Deployment• 7.2 Batch Process ing• 7.3 Power Procedures• 7.4 Rout ine Checks
• 7.4 .1 Sys tem Rebu i l ds
• 7.5 Troubleshoot ing
• 8 Maintenance Tasks • 8.1 Ma in tenance Procedures
• 8.1.1 Patch ing • 8.1 .1 .1 No rma l C y c l e
• 8.1 .1 .2 Ze ro -D ay Vu l ne r ab i l i t i e s
• 8.1 .2 GMT/BST t ime changes• 8.1 .3 Cleardown Act i v i t i es
• 8.1 .3 .1 Log R o t a t i on
• 8.2 Test ing • 8.2 .1 Techn ica l Tes t ing• 8.2 .2 Pos t -Dep loymen t
• 9 Fai lure and Recovery Procedures • 9.1 Fa i lover• 9.2 Recovery• 9.3 Troubleshoot ing Fa i lover and Recovery
• 10 Contact Detai ls
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Run Book / Ops Manual2.1 Service Overview2.2 Contributing Applications, Daemons, and Windows Services
2.3 Hours of Operation
2.4 Execution Design2.5 Infrastructure and Network Design
2.6 Resilience, Fault Tolerance and High-Availability
2.7 Throttling and Partial Shutdown
2.8 Required Resources
2.9 Expected Traffic and Load
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Run Book collaboration•The Dev team is responsible for the first draft• “But I know nothing about Production!”•Encourages collaboration with Ops team
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Run Book collaboration• It’s not about documentation!•A means to an end•Builds trust and understanding•Aim to throw it away when complete!•Automate more over time•See http://runbookcollab.info/
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Practical steps for Agile + ITIL®
Run Book collaborationChoose tools that encourage collaboration
Test early for operational readinessSingle product backlog
Keep changes smallRotate people through Dev and Ops teams
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http://rashidkpc.github.io/Kibana/images/screenshots/searchss.png
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“How does [the use of] this tool help people to collaborate*?”
* Work together, at the same keyboard/screen
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‘How to choose tools for DevOps and Continuous Delivery’
http://bit.ly/ChooseDevOpsTools
‘DZone guide to Continuous Delivery 2014’
http://bit.ly/DZoneCDreport
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Practical steps for Agile + ITIL®
Run Book collaborationChoose tools that encourage collaboration
Test early for operational readinessSingle product backlog
Keep changes smallRotate people through Dev and Ops teams
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Operational readiness•Network testing•Security testing•Performance testing•Auxiliary infrastructure testing:•Monitoring•Log aggregation
•… (see http://softwareoperability.com/)
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Network testing• iTrinegy network emulators•Scripted setup and automated test runs•http://www.itrinegy.com/
•Saboteur: •Network fault injection tool•https://github.com/tomakehurst/saboteur
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Security testing•Gauntlt: http://gauntlt.org/# nmap-simple.attack
Feature: simple nmap attack to check for open ports
Background:
Given "nmap" is installed
And the following profile:
| name | value |
| hostname | example.com |
Scenario: Check standard web ports
When I launch an "nmap" attack with:
"""
nmap -F <hostname>
"""
Then the output should match /80.tcp\s+open/
Then the output should not match:
"""
25\/tcp\s+open
"""
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Deployment pipeline•Make operational testing visible
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Run Book collaborationChoose tools that encourage collaboration
Test early for operational readinessSingle product backlog
Keep changes smallRotate people through Dev and Ops teams
Practical steps for Agile + ITIL®
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Single product backlog
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Single product backlog
Use ‘operational features’, not NFRs
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Single product backlog
Features
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Practical steps for Agile + ITIL®
Run Book collaborationChoose tools that encourage collaboration
Test early for operational readinessSingle product backlog
Keep changes smallRotate people through Dev and Ops teams
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Keep changes small•Smaller changes are easier to comprehend*•People are fearful of large changes•Fear prevents clear thinking (psychology)•Small changes allow easier monitoring•Make changes monitorable
* There is also sound mathematics behind small change size
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Practical steps for Agile + ITIL®
Run Book collaborationChoose tools that encourage collaboration
Test early for operational readinessSingle product backlog
Keep changes smallRotate people through Dev and Ops teams
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Rotate people through teams•Developers sitting with Ops people•Ops people sitting with developers•Sharing on-call duties•Learning about:•Version control•Logging•etc.
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Practical steps for Agile + ITIL®
Collaborate on draft Run BooksFavour tools that enable real collaboration
Test for operability in a deployment pipelineUser-visible & operational features togetherMonitoring tools enable small changes oftenRotate people through Dev and Ops teams
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Recapitulation
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Agile, ITIL®, DevOpsComplementary, not conflicting
All use iterative improvementAll aim for working software
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Agile, ITIL®, DevOpsFocus on feedback loops
Shorten the feedback cyclesEncourage collaboration
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Agile, ITIL®, DevOpsPractical steps to join up:
Run Book collaborationChoose tools for collaboration
Test for operability up frontA single backlog for user-visible and operational features
Use monitoring to increase confidence in changesShare on-call responsibilities
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Joining up Agile + ITIL®
for DevOps successSee Agile & ITIL® as complementary
Test early for operabilityCollaborate on operational features
Shorten feedback cyclesUse monitoring to increase confidence
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Further readingAgile and ITIL: and how they integrate[BCS]
http://bit.ly/BCSAgileITIL
Best practice in the cloud [Axelos]
http://bit.ly/CloudITIL
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Further readingBuild Quality Inbuildqualityin.com
Forewords by Dave Farley and Patrick Debois
Discount for webinar attendees!https://leanpub.com/buildqualityin/c/UnicomSeminars
http://bit.ly/BQIUnicomSeminars
Valid until 14th January 2015
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Effective DevOps for Leadershalf-day seminar, run by Skelton Thatcher
Locations: London & Leeds
http://effectivedevops.com/
Promo code ‘UNICOM’ – 10% discount