1. Rethinking Configuration in the Age of Easy Redeployment
RackN, Inc
February, 2018
Note: Graphics mainly from http://pexels.com
<<< Shift Left <<<

2. 2
@zehicle #immutable

3. 3
@zehicle #immutable
1)
2)
3)
4)
5)

4. 4
@zehicle #immutable
sa !

6. mu on

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@zehicle #immutable
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@zehicle #immutable
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Let’s o k w !

10. Pre-de y fi d

11. 11
@zehicle #immutable
Delivery Pipeline
Deployment
Code
Build
Integrate
Run
Configure

12. 12
@zehicle #immutable
Delivery Pipeline
Deployment
Code
Build
Integrate
Run
Configure

13. 13
@zehicle #immutable
Delivery Pipeline
Deployment
Code
Build
Integrate
Run
Configure
Ini iz !

15. 15
@zehicle #immutable
StateManager
(e.g.Kubernetes)
Code
Build
Integrate
Run
Configure
Delivery Pipeline

16. 16
@zehicle #immutable
StateManager
(e.g.Kubernetes)
Code
Build
Integrate
Run
Configure
Delivery Pipeline
Kub te ? W !
Is ut > K8s?

17. Immutable is a DevOps Pattern
<<< Shift Left & Create/Delete

18. 18
@zehicle #immutable
The Problem
package
server
image
provision
server
initial
config

19. 19
@zehicle #immutable
The Problem
package
server
image
provision
server
initial
config
patch 1

20. 20
@zehicle #immutable
The Problem
package
server
image
provision
server
initial
config
patch 1 patch 2

21. 21
@zehicle #immutable
The Problem
package
server
image
provision
server
initial
config
patch 1 patch 2
t e d s o n't
s o t c 2!

22. 22
@zehicle #immutable
The Problem
package
server
image
provision
server
initial
config
patch 1 patch 2
t e d s o n't
s o t c 2!●
●
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●

23. 23
@zehicle #immutable
The Problem
package
server
image
provision
server
initial
config
patch 1 patch 2
SA !!

24. 24
@zehicle #immutable
Apply cloud and container lessons to our Bare Metal …
package
server
image
provision
server
initial
config
destroy!!

25. 25
@zehicle #immutable
Apply cloud and container lessons to our Bare Metal …
package
server
image
provision
server
initial
config
package
server
image
provision
server
initial
config
destroy!!
destroy!!patch 1

26. 26
@zehicle #immutable
Apply cloud and container lessons to our Bare Metal …
package
server
image
provision
server
initial
config
package
server
image
provision
server
initial
config
destroy!!
destroy!!patch 1
package
server
image
provision
server
initial
config
depatch 2

27. 27
@zehicle #immutable
Apply cloud and container lessons to our Bare Metal …
package
server
image
provision
server
initial
config
package
server
image
provision
server
initial
config
destroy!!
destroy!!patch 1
package
server
image
provision
server
patch N
package
server
image
provision
server
initial
config
depatch 2
initial
config

28. Immutable Patterns
1) Baseline + Configuration
2) Live Boot + Configuration
3) Image Deploy

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Provisioning
System
Requested
State
Returned
State

30. 30
Provision requests are for a system state
with optional parameters.
The intermediate changes to achieve the
state are not exposed to the requester.
Provisioning
System
Reset Join
Install
Config
Test
Requested
State
Returned
State

31. 31
Provision requests are for a system state
with optional parameters.
The intermediate changes to achieve the
state are not exposed to the requester.
REMEMBER: Operators of the
provisioning system require high
transparency, stages and control.
Provisioning
System
Reset Join
Install
Config
Test
Requested
State
Returned
State
No h n
op i n !

32. 32
Provision ResetBaseline Configure Run

33. 33
Provision RebootBaseline Configure Run

34. 34
Provision
Deploy
Image
Run Provision
Deploy
Image
Run

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36. 36
Tha n li ot
of k & re y ow!

38. Interested in IMMUTABLE METAL?
It’s complicated, but we can get you there.
Start at http://portal.rackn.io
• Quickstart takes about 30 minutes
• Use your own hardware, VirtualBox or Packet.net
account
– use “RACKN100” on Packet.net for credit