1. Nightmare on Docker street
devopsdays Gent 2016
Kris Buytaert
@krisbuytaert

2. A global movement to improve theA global movement to improve the
quality of software delivery leveragingquality of software delivery leveraging
Open Source experience, started in GentOpen Source experience, started in Gent
in 2009in 2009

3. Because the old days:Because the old days:
● ““Put this Code Live, here's a tarball” NOW!Put this Code Live, here's a tarball” NOW!
● What dependencies ?What dependencies ?
● No machines available ?No machines available ?
● What database ?What database ?
● Security ?Security ?
● High Availability ?High Availability ?
● Scalability ?Scalability ?
● My computer can't install this ?My computer can't install this ?

4. 10 days into operations10 days into operations

5. Towards C(L)AMSTowards C(L)AMS
● CultureCulture
● (Lean)(Lean)
● AutomationAutomation
● MeasurementMeasurement
● SharingSharing
Damon Edwards andDamon Edwards and
John WillisJohn Willis

6. This new 'D' hypeThis new 'D' hype
● New kid on the blockNew kid on the block
● Vagrant-lxc with a nice cliVagrant-lxc with a nice cli
● The Ultimate “devops tool”The Ultimate “devops tool”
● ““Unseen” growthUnseen” growth
● Docker is the new cool thing to doDocker is the new cool thing to do

7. DockerDocker
DockeDocke
rr
DockerDocker
DockeDocke
rr
DockeDockeDockerDocker

8. A typical Enterprise ContainerA typical Enterprise Container
● No different from a full vmNo different from a full vm
● Multiple services running inMultiple services running in
one containerone container
● Ssh is the default connectionSsh is the default connection

10. Why ?Why ?
● I want a VMI want a VM
•
Please fill in these 4 formsPlease fill in these 4 forms
•
Wait 2 weeks.Wait 2 weeks.
● RepeatRepeat
IT Departments have not adapted,IT Departments have not adapted,
'Shadow'-IT is winning'Shadow'-IT is winning

14. These DaysThese Days
● ““Put this Code Live, here's a DockerPut this Code Live, here's a Docker
Container ”Container ”
● No machines available ?No machines available ?
● What database ? Where to store theWhat database ? Where to store the
data ?data ?
● Security ? What distro is this even ?Security ? What distro is this even ?
Bad Cows ?Bad Cows ?
● How do we monitor his ?How do we monitor his ?
● Backups ?Backups ?
● How did you build this ?How did you build this ?

15. 11 days into operations11 days into operations
● ““Put this Code Live, here's Dockerfile”Put this Code Live, here's Dockerfile”
● What corporate proxy ?What corporate proxy ?
● Oh I missed 2 other containersOh I missed 2 other containers
● Security ? What distro is this even ?Security ? What distro is this even ?
Bad Cows ?Bad Cows ?
● What do you mean “We are a RHELWhat do you mean “We are a RHEL
shop ?”shop ?”

16. Closing the gaps between devClosing the gaps between dev
and ops,and ops, AGAIN !!AGAIN !!● Where do your containersWhere do your containers
come from ?come from ?
● Who build it ?Who build it ?
● Can you rebuild it ?Can you rebuild it ?
● Do you even need aDo you even need a
containercontainer
● How do you build the hostsHow do you build the hosts
that run the containers ?that run the containers ?
● Infrastructure as code ++Infrastructure as code ++

17. Image Build by devs,Image Build by devs,
maintained by nobodymaintained by nobody

18. Can you ?Can you ?
● When GitHub is down ?When GitHub is down ?
● When rubygems.org isWhen rubygems.org is
down ?down ?
● When someone removes aWhen someone removes a
Node.js library ?Node.js library ?
● Fix critical Security Issues ?Fix critical Security Issues ?
● Can your business surive ifCan your business surive if
you answer NO to theseyou answer NO to these
questions ?questions ?

19. ● I love docker as a technologyI love docker as a technology
● I hate that it too often put usI hate that it too often put us
back 5 years with regards toback 5 years with regards to
Culture adoptionCulture adoption
● Docker is an easy victim,Docker is an easy victim,
there's other tools thatthere's other tools that
create similar situationscreate similar situations
● It's still mostly about CultureIt's still mostly about Culture
It's still about collaborationIt's still about collaboration

20. ContactContact
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/
http://www.inuits.eu/http://www.inuits.eu/
Inuits.euInuits.eu
Essensteenweg 31Essensteenweg 31
BrasschaatBrasschaat
BelgiumBelgium
891.514.231891.514.231
+32 475 961221+32 475 961221