devoxxuk 2016: "devops: microservices, containers, platforms, tooling... oh yeah, and...
TRANSCRIPT
![Page 1: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/1.jpg)
DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people
Daniel Bryant @danielbryantuk
Steve Poole@spoole167
![Page 2: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/2.jpg)
On the Previous Episode of Devoxx UK…
• 2014 “Moving to DevOps: Easy, Hard or Just Plain Terrifying”
• DevOps is about extending agility across your IT org
• Breaking down the silos is vital
• The business needs to react to the industry change– DevOps, cloud and containers
![Page 3: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/3.jpg)
Today
• Microservices are (operationally/conceptually) distributed systems
• The application/infrastructure ‘platform’ is still not fully baked
• Think “Safety first”– Security, networking cyber criminals
• DevOps is (still) all about the organisation, people and processes
![Page 4: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/4.jpg)
I (we) am the one who knocks…Steve Poole
IBM Developer
@spoole167
Daniel Bryant
Chief (Mad) Scientist, OpenCredo
@danielbryantuk
Making Java Real Since Version 0.9
Open Source Advocate
DevOps Practitioner (whatever that means!)
Driving Change
“Biz-dev-QA-ops”
Leading change in organisations
Experience of Docker, k8s, Go, Java
InfoQ, DZone, Voxxed contributor
![Page 5: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/5.jpg)
Part 1- Painful Lessons…
https
://w
ww
.flic
kr.c
om/p
hoto
s/sa
rahm
stew
art/
![Page 6: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/6.jpg)
All I hear is microservices…
“In computing, microservices is a software
architecture style in which complex applications are composed of small, independent processes communicating with each other using language-agnostic APIs. These
services are small, highly decoupled and focus on doing a small task,
facilitating a modular approach to system-building.”
https://en.wikipedia.org/wiki/Microservices
![Page 7: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/7.jpg)
Microservices
Turn applications into small, independent, highly decoupled, modular services
https://www.flickr.com/photos/daikrieg/
You want to make my life more complicated?
![Page 8: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/8.jpg)
https
://w
ww
.flic
kr.c
om/p
hoto
s/ta
hini
/
Where’s the problem?
![Page 9: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/9.jpg)
browserApp A V1.0
Database
browser
You
Your Customers
server
Data Centre
![Page 10: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/10.jpg)
browserLoad balancer
App A V2.0
App AV2.0
App BV1.0
Database
browserDatabase
Ops
![Page 11: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/11.jpg)
browserLoad balancer
App A V2.0
App AV2.0
App BV1.0
Database
browserDatabase
browser
App A V2.0
App AV2.0
App BV1.0
browser
![Page 12: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/12.jpg)
browser
Load balancer
App A V2.0
App AV2.0
App BV1.0
Database
Database
browser App A V2.0
App AV2.0
App BV1.0
browser
browser
browser
browser
browser
Load balancer
Database
![Page 13: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/13.jpg)
browser
Load balancer
App A V2.1
App AV2.1
App BV1.0
Database
Database
browser App A V2.1
App AV2.1
App BV1.0
browser
browser
browser
browser
browser
Load balancer
Database
![Page 14: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/14.jpg)
A simple upgrade or a major impact?
lost revenue or going out of business?
![Page 15: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/15.jpg)
https
://w
ww
.flic
kr.c
om/p
hoto
s/24
1510
87@
N00
/
What lessons have we learnt?
Sharing data stores sounds like it saves effort but introduces cohesion between applications
Big-bang versioning of applications means putting existing unchanged use cases at risk
Scaling is challenging when you try to duplicate whole systems
Infrastructure – it’s much more important than we initially realized
![Page 16: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/16.jpg)
Part 2 - Build Your Own Platform?
![Page 17: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/17.jpg)
Adrian Cockcroft’s (@adrianco) Thoughts
![Page 18: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/18.jpg)
http://wikibon.com/wp-content/uploads/container_implementations.png
Technology Choices
![Page 19: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/19.jpg)
05/03/2023 @danielbryantuk
![Page 20: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/20.jpg)
What’s Wrong with PaaS?
![Page 21: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/21.jpg)
Core Features
• Continuous deployment
• Health checks
• Logging
• Monitoring
www.opencredo.com/2015/10/31/javaone-building-a-microservice-development-ecosystem-video
![Page 22: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/22.jpg)
05/03/2023 @danielbryantuk
Logging• “The
Log: What every software engineer should know about real-time data's unifying abstraction”
• “10 Tips for Proper Application Logging”
• ElasticSearch-Logstash-Kibana (ELK)– Buffer/proxy log sending or…– Mount directory into container
![Page 23: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/23.jpg)
05/03/2023 @danielbryantuk
Monitoring• Push
– Spring Boot actuator e.g. InfluxDbExporter
• Pull – E.g. Telegraf (TICK), Prometheus
• InfluxDB vs prometheus vs graphite vs opentsdb
• Information radiators - Grafana– Aggregate vs individual
![Page 24: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/24.jpg)
Aggregation: Sick Cattle, Not Sick Pets
![Page 25: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/25.jpg)
05/03/2023 @danielbryantuk
Distributed Tracing
• Correlation: github.com/daniel-bryant-uk/correlation-id-async• MDC logging: logback.qos.ch/manual/mdc.html • OpenZipkin: github.com/openzipkin
![Page 26: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/26.jpg)
Looking Inside the Container
![Page 27: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/27.jpg)
Common Java / Docker Issues• No disk space for docker logging– Increase disk space (move logs to mount)
• Restricting resources to only Xmx memory limit– Set memory limit = Heap (Xmx) + Metaspace + JVM
• Security or crypto issues as /dev/random limited in containers– -Djava.security.egd=file:/dev/urandom
• See Chris Batey’s “The JVM and Docker” talk here at 15:00 today
![Page 28: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/28.jpg)
Debugging Tools
• Java– jstat, jstack, jmap– “5 things you didn’t know”
• OS– Top, htop, ps, free, df –h,
vmstat,iostat – /proc filesystem meminfo and
vmstat not cgroup aware!– Use sysdig
www.joyent.com/blog/linux-performance-analysis-and-tools-brendan-gregg-s-talk-at-scale-11x
![Page 29: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/29.jpg)
05/03/2023 @danielbryantuk
Problems?
• Rob Ewaschuk’s “Philosophy on Alerting”
• Brendan Gregg’s USE method – “check utilization, saturation, and errors.”
• “DevOps Troubleshooting”– Kyle Rankin
![Page 30: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/30.jpg)
Part 3 – Safety first
![Page 31: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/31.jpg)
https
://w
ww
.flic
kr.c
om/p
hoto
s/m
iriam
delir
ium
/
Tooling – what’s left to do?
![Page 32: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/32.jpg)
Dynamic DevelopmentCapacity
Predefined static VM’s LPARs etc
OpenStack Cloud(s)
Docker Cloud
Infrastructure as CodeChef, Puppet, UCD …
OS
Infra On Prem Data Centres
Cloud ProvidersSoftLayer / Amazon etc
Config Containerized Applications
Continuous AvailabilityMesos etc
Deploy
Pipeline
Block Architecture of Hybrid Cloud Dev
SaaS
Primary Audience
GIT / Jenkins / Junit …. Selenium, Jmeter…
✔
✔
✔
✔
✔
Application DIY
![Page 33: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/33.jpg)
Dynamic DevelopmentCapacity
Predefined static VM’s LPARs etc
OpenStack Cloud(s)
Docker Cloud
Infrastructure as CodeChef, Puppet, UCD …
OS
Infra On Prem Data Centres Cloud ProvidersSoftLayer / Amazon etc
Config Containerized Applications
Continuous AvailabilityMesos etc
Deploy
Pipeline
Block Architecture of Hybrid Cloud Dev
SaaS
Primary Audience
GIT / Jenkins / Junit …. Selenium, Jmeter…
Other static hosts (‘BYOD’)
DIY
Application DIY
![Page 34: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/34.jpg)
Dynamic DevelopmentCapacity
Predefined static VM’s LPARs etc
OpenStack Cloud(s)
Docker Cloud
Infrastructure as CodeChef, Puppet, UCD …
OS
Infra On Prem Data Centres Cloud ProvidersSoftLayer / Amazon etc
Config Containerized Applications
Continuous AvailabilityMesos etc
Deploy
Pipeline
Block Architecture of Hybrid Cloud Dev
SaaS
Primary Audience
GIT / Jenkins / Junit …. Selenium, Jmeter…
Other static hosts (‘BYOD’)
DIY
Compliance / Security ContainersVM Images
Application DIY
![Page 35: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/35.jpg)
Dynamic DevelopmentCapacity
Predefined static VM’s LPARs etc
OpenStack Cloud(s)
Docker Cloud
Infrastructure as CodeChef, Puppet, UCD …
OS
Infra On Prem Data Centres Cloud ProvidersSoftLayer / Amazon etc
Config Containerized Applications
Continuous AvailabilityMesos etc
Deploy
Pipeline
Block Architecture of Hybrid Cloud Dev
SaaS
Primary Audience
GIT / Jenkins / Junit …. Selenium, Jmeter…
Other static hosts (‘BYOD’)
DIY
Compliance / Security ContainersVM Images
Application DIY
![Page 36: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/36.jpg)
You do understand about security and compliance right?
https
://w
ww
.flic
kr.c
om/p
hoto
s/ad
ulau
/
![Page 37: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/37.jpg)
Where’s your data?
Legal restrictions on data locationVary by country even within the EU. Different rules depending on types of data
You already know this?
But now you’re putting the data in the cloud.
DO YOU understand where its goingCan you control / manage / audit the situation?
Now it’s your problem.
Having fun finding tools to help
![Page 38: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/38.jpg)
How’s your security knowledge?• Again – now it’s your problem
– Your code is running in the cloud– You created the services & the containers– Are they secure?– How do you test?– Are you sure?– Are those web services you’re buying secure?
• How much do you know about networking?– Not enough…
• Cyber crime is big business – you will get targeted. https://www.flickr.com/photos/61423903@N06/
![Page 39: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/39.jpg)
“Organized Cybercrime is the most profitable type of crime”
• Cybercrime is estimated to be worth 445 Billion Dollars a Year
• In 2013 the United Nations Office on Drugs and Crime (UNODC) estimated globally the illicit drug trade was worth 435 Billion Dollars
• Guess which one has the least risk to the criminal?• Guess which is growing the fastest?• Guess which one is the hardest to prosecute?
• Guess which one is predicted to reach 2100 Billion Dollars by 2019?
![Page 40: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/40.jpg)
Talk to your Ops team
• They are your best friends.– They know about security and networking. • You need to know too
– They know (some) of the answers• It’s a whole new domain for you
– It’s not a new problem for them• Time to learn
![Page 41: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/41.jpg)
Part 4 - Sharing is Caring
![Page 42: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/42.jpg)
The Results of the Survey Are In…
• Puppet Labs 2015 State of DevOps– Available: puppetlabs.com/2015-devops-report
• Accelerates deployment– High performers 30x more deploys– Code committed to production 200x faster
• Prevents failures and streamlines recovery– High performers 60x fewer failures– Recovery 168x faster
![Page 43: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/43.jpg)
DevOps Topologies (Bad)
• DevOps Anti-Types– Dev and Ops– DevOps Silo– No Ops Needed– Tools Team– Sysadmin– Embedded Ops
http://web.devopstopologies.com/@matthewpskelton
![Page 44: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/44.jpg)
DevOps Topologies (Good)• DevOps Team Topologies
– Dev+Ops– Shared Ops– Ops as IaaS– DevOps-as-a-Service– Teamp DevOps Team– DevOps Evangelists– SRE Team– Container-Driven– DB Capability
http://web.devopstopologies.com/@matthewpskelton
![Page 45: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/45.jpg)
The ’Spine Model’ – The Right Conversations• Effective conversations make for effective
collaboration
• People get stuck in a dilemma where equally plausible options are available
• “Going up the Spine” breaks deadlock
• It’s a TOOL Problem– As a species, we have always been Tool users
and makers. – We use _____ to get our work done http://spinemodel.info/explanation/introduction/
![Page 46: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/46.jpg)
DevOps != Tooling• PRACTICES before Tools
– Decide on the Practices that the tools are there to support– We do _____ to create value
• PRINCIPLES before Practices– Decide on the Principles to measure those Practices against.– We leverage _____ to change the system
• VALUES before Principles– Make as explicit as possible the Values at play in the system.– We optimise for _____
• NEEDS before Values– It all starts at Needs. Why does this system exist in the first
place?– We are here to satisfy _____
http://spinemodel.info/explanation/introduction/
![Page 47: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/47.jpg)
05/03/2023 @danielbryantuk
When Things (Inevitably) Go Wrong
![Page 48: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/48.jpg)
05/03/2023 @danielbryantuk
Optimise for Learning (and Feedback)
www.infoq.com/news/2015/06/too-big-to-fail
![Page 49: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/49.jpg)
Part 5 – Conclusions
![Page 50: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/50.jpg)
Key Messages• Microservices force you to know about distributed systems
– You need to learn how to design and run applications in a new way
• The application/infrastructure ‘platform’ stack is still not fully baked– Essentials are CI/CD, health checks, logging and monitoring
• Think “Safety first”– It’s a wild world out there - security, networking cyber criminals
• Make your ops team your best friend– DevOps is all about the organisation, people and processes
![Page 51: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/51.jpg)
Thanks – Questions?
Daniel Bryant@danielbryantuk
Steve Poole@spoole167
![Page 52: DevoxxUK 2016: "DevOps: Microservices, containers, platforms, tooling... Oh yeah, and people"](https://reader031.vdocuments.site/reader031/viewer/2022013013/58ed41671a28ab5e2d8b4627/html5/thumbnails/52.jpg)
Bonus: Containers Are Not Immutable (By Default)
• Containers can be as susceptible to configuration drift as VMs/bare metal– This surprises many people
• Suggestions– docker run --read-only– docker run --tmpfs /tmp
• Gareth Rushgrove’s CraftConf talk– http://www.ustream.tv/recorded/86186490