2. immutable
ɪˈmjuːtəb(ə)l/Submit
adjective
1. unchanging over time or unable to be changed.
"an immutable fact"
synonyms: unchangeable, fixed, set, rigid, inflexible, unyielding,
unbending, permanent, entrenched, established, well-established,
unshakeable, irremovable, indelible, ineradicable; More
3. The Golden Image
anti devops …. but why
Quarterly unchanged image
Any change was slow and frustrating
Poor tooling
Much easier deploy and then
change with config managment
15. Immutable Servers
Instead of changing or maintaining a server,
replace it with a new one.
Servers no longer change, they are prebuilt
static images that we have tested.
Automation is key
16. The Future is Immutable
● Big Wins, little downsides
● As server become cheaper more
commoditized and more distributed
immutable servers will be key
● Start small not all servers will be easily
immutable
17. The Wins
Super fast deployment
Repeatable
High failure tolerance
Improved stability and testability
Versioning
Secure