Continuous Infrastructure Automation

Continuous Infrastructure
First !
Kris Buytaert
@krisbuytaert

@krisbuytaert
Kris Buytaert
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I used to be a Dev,
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Then Became an Op
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20th year at #fosdem
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CTO and Open Source Consultant @inuits.eu
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Everything is a freaking DNS Problem
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Evangelizing devops
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Organiser of #devopsdays, #cfgmgmtcamp, #loadays,
#deliveryconf ? :) ….

@krisbuytaert
What is this is devops thing?
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Culture
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(Lean)
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Automation
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Measurement
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Sharing
Damon Edwards and John Willis

@krisbuytaert
devops (<)> continuous delivery

@krisbuytaert
Nirvana
An “ecosystem” that supports continuous delivery, from infrastructure,An “ecosystem” that supports continuous delivery, from infrastructure,
data and configuration management to business.data and configuration management to business.
Through automation of the build, deployment, and testing process, andThrough automation of the build, deployment, and testing process, and
improved collaboration between developers, testers, and operations,improved collaboration between developers, testers, and operations,
delivery teams can get changes released in a matter of hours —delivery teams can get changes released in a matter of hours —
sometimes even minutes–no matter what the size of a project or thesometimes even minutes–no matter what the size of a project or the
complexity of its code base.complexity of its code base.
Continuous Delivery , Jez HumbleContinuous Delivery , Jez Humble

@krisbuytaert
"Our job as engineers (and ops, dev-ops, QA, support,
everyone in the company actually) is to enable the
business goals. We strongly feel that in order to do that
you must have the ability to deploy code quickly and
safely. Even if the business goals are to deploy strongly
QA’d code once a month at 3am (it’s not for us, we push
all the time), having a reliable and easy deployment
should be non-negotiable."
Etsy Blog upon releasing Deployinator
http://codeascraft.etsy.com/2010/05/20/quantum-of-deployment/

@krisbuytaert
For years we've tolerated humans to make structural manual
changes to the infrastructure our critical applications are
running on.
Whilst at the same time demanding those critical applications
to go through rigid test scenarios.
Who let this happen ?

@krisbuytaert
history of devops
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Europe :
– Starting from Operations,
– Improved Artifact Quality,
– Less pain / stability
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US :
– Push from development
– Faster Platforms
– Faster change

@krisbuytaert
NoOps & YOLO Ops
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Startup
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VC
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Exit Strategy
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6-9 months
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Actual Business
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Real Customers
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Survival
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6-9 years

@krisbuytaert
3 Different Transition Cases:
Startups & Multinationals

@krisbuytaert
Case 1: Chaotic Ops
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Complete Chaos
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10% reproducibility
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CI infra hides under a dev’s desk
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Ops in Debug Mode
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No standardization
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Apollo Moment

@krisbuytaert
Case 1: T0+3months
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Build a Reproducible Jenkins + Slaves
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CI for Puppet by OPS
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Test your code
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Promotion Stage for Infrastructure Code
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Split config out of code
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Keep delivering updates

@krisbuytaert
Case 1: T0+6 months
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Stack Alignment
– 1 jdk, 1 jboss , ...
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Project Dolly :
– Puppet for everything
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90% reproducibility
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Standardized Builds
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Increased Test Coverage
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Java Developers contribute to Infra Tests

@krisbuytaert
Case 1: Conclusion
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Started with preparing ops folks to
automate
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Learned the same tools developers use
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Developers help the ops folks to improve
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Collaboration + Progress ++

@krisbuytaert
Case 2: CI by Devs
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Some devs have tests
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Some dev teams have “CI”
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Deployments are Chaos
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Ops nags about Artifact Quality

@krisbuytaert
Case 2: T0+18 months
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Found the first ops skills in the org
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Mostly overworked Brent’s
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Move them out of their offices
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Focus team
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Teach Agile
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Adopt IAC (puppet)
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First Successes
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Move people back to teams

@krisbuytaert
Case 2: T0+24 months
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Grey Beard Ops person has converted to
Agile Evangelist
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Preaches Kanban (for ops) and Scrum
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Writes Test for his Code
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Coaches developers to achieve CI/CD

@krisbuytaert
Case 2: Conclusions
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Starting with dev delayed the
collaboration for 1+ year
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Ops were fire fighting and not involved
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Once ops resources were dedicated
collaboration and quality improvement
started to happen

@krisbuytaert
Case 3:Ops NOT involved
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Large Transformation
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“devops” team dictates tools they have never used
them selves
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Tools they as a team don’t need themselves
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Developers complain about unusable tools
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Developers complain about broken tools
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Tools enforce a manual process

@krisbuytaert
Case 3: 2 years later
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Average “devops” role stays for 2 months , then
leaves
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Senior IT management has left (2x)
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Only In house analysts remain
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Mostly contract based developers
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Failing Cloud Strategy
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Legacy Container Ecosystem

@krisbuytaert
Case Conclusions
Earlier involvement of the Ops Skills creates
much higher success rates , and smoother
Continuous Delivery adoption

@krisbuytaert
Why ops first ?
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You can’t support / understand what you don’t
do yourself
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Code = Code
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Unblock delivery
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Unblock provisioning
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Metrics & Monitoring Build in

@krisbuytaert
Culture vs Tools

@krisbuytaert
Culture Hack
Set up CI/CD for your CI/CD infrastructure
first, If the people running your infra don't
know how CI/CD works , how do you
expect them to support / teach your
application teams ?

@krisbuytaert
How do we do this ?

@krisbuytaert
A CI Ecosystem
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Version Control
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Deployment
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Build Tooling
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Artifact Repository
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Code Coverage Tooling
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Testing Tools
How many of those tools is your average ops person
used to use ?

@krisbuytaert
Arguments against CI
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Setting up the stack costs time
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U don’t have tests anyhow
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Operations and development are different
budgets
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One shot projects , fire and forget
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...

@krisbuytaert
Not Continuous Deployment
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@stahnma @#devopsdays Ohio

@krisbuytaert
Infrastructure as Code
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Treat configuration automation as code
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Development best practices
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Model your infrastructure
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Version your cookbooks / manifests
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Test your cookbooks/ manifests
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Dev/ test /uat / prod for your infra
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Model your infrastructure
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A working service = automated ( Application Code + Infrastructure Code +
Security + Monitoring + ... )
PS. Converting Bash to Yaml != IAC

@krisbuytaert
Version all the things
No more excuses !– Source code Application
– Source code Infrastructure
– Builds
– Tests
– Pipelines
– Scripts
– Documentation
– Monitoring scripts

@krisbuytaert
Software Release
management is not a
solved problem

@krisbuytaert
Unless you understand Git Submodules
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Basic git,
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No extra tools required
Integrates with other projects too.
(No need for *-librarian etc ..)

@krisbuytaert
Continuous Integration
Continuous integration (CI) is the practice, in software engineering, of
merging all developer working copies with a shared mainline several
times a day. It was first named and proposed as part of extreme
programming (XP). Its main aim is to prevent integration problems,
referred to as "integration hell"
(WikiPedia)
Does the app you are deploying still work ?
Did you break your puppet / chef code ?

@krisbuytaert
What's in your Infra
Pipeline ?

@krisbuytaert
A pipeline
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Checkout code
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Syntax
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Style
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Code Coverage
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Tests
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Build
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More Tests
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Package
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Upload to Repo

@krisbuytaert
Artifacts:
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Tested artifacts that go through a
pipeline
application code,
Infra code
metadata
tests

@krisbuytaert
Repository Management

@krisbuytaert
A pipeline
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Checkout code
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Syntax
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Style
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Code Coverage
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Tests
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Build
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More Tests
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Package
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Upload to Repo
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Deploy on Test
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Check Puppetruns
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Check Monitoring

@krisbuytaert
Testing = Monitoring
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Deploy a host,
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Add it to the monitoring framework
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Add collection tools
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Add check definitions
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Update the monitoring tool config
FULLY AUTOMATED

@krisbuytaert
A pipeline
●
Checkout code
●
Syntax
●
Style
●
Code Coverage
●
Tests
●
Build
●
More Tests
●
Package
●
Upload to Repo
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Deploy on Test
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Check Puppetruns
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Check Monitoring
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Promote to next target (e.g UAT)
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Increase Testing
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Promote to next target (e.g Prod)

@krisbuytaert
Jenkins Job DSL
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Groovy
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Git
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Rebuild jobs on commit
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Projects in folders
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1 seed job to seed them all

@krisbuytaert
Larger CI Stacks
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Generate Pipelines / Jobs based on config files
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Build libraries
– CheckoutJob
– DeployJob
– PackageJob
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Use Groovy / JobDSL to generate PipelineDSL

@krisbuytaert
Testing Multiple Versions
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Initial stage tests code on multiple versions
– e.g current puppet version
– Next puppet version
– Bleeding Edge version
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Only current version breaks build
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Goal = get all versions green

@krisbuytaert
On Prem vs Cloudnative
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Puppet, Chef, Ansible,
Terraform
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Kvm/OpenStack/..
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VPN, Firewalls
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Pipelines & Pipelines
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Standardisation
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Security
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Monitoring
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Puppet, Chef, Ansible,
Terraform
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EC2 etc ..
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VPC, SG
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Pipelines & Pipelines
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Standardisation
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Security
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Monitoring

@krisbuytaert
Dev Ooops #container edition
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Put this Code Live, here's a Docker Image
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No machines available ?
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What database ? Where to store the
data ?
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Security ? What distro is this even ?
Bad Cows ?
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How do we monitor his ?
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Backups ?
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How did you build this ?
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Has DockerHub been hacked again ?

@krisbuytaert
Large Challenge
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How do you automatically spin up a K8s setup in an
existing Ecosystem
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No vendor Lockin, Open Source only ?
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How do you deploy applications on K8s , reproducible,
not using 30 bash scripts
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Container Ecosystem is no where close to the level of
automation / reproducibility which we are used in VM’s

Contact
InuitsInuits
Essensteenweg 31Essensteenweg 31
BrasschaatBrasschaat
BelgiumBelgium
891.514.231891.514.231
+32 475 961221+32 475 961221
Kris Buytaert Kris.Buytaert@inuits.euKris Buytaert Kris.Buytaert@inuits.eu
Further ReadingFurther Reading
@krisbuytaert@krisbuytaert
http://www.krisbuytaert.be/blog/http://www.krisbuytaert.be/blog/
https://inuits.eu/https://inuits.eu/

Continuous Infrastructure Automation

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