This document discusses extending Kubernetes with custom APIs and operators using Spring Cloud. It outlines three stages of Kubernetes maturity: running applications, extending Kubernetes' understanding with custom resource definitions, and implementing operators. Examples are provided of extending Kubernetes for domain-specific challenges like Jenkins X and reconciling application deployments. Code samples and links are provided for building extensions with Spring Cloud, Kubernetes CRDs, and operator patterns.

1. 1
Extending Kubernetes
with Spring Cloud
Why and how you can extend Kubernetes Apis for solving your
domain specific challenges
https://github.com/salaboy/extending-k8s-with-spring-cloud

2. 2
About me
salaboy.com
@salaboy
Ex-RedHat, Kubernetes-Addict, Spring Cloud Contributor,
Business Automation and Activiti Cloud Tech Lead @ Alfresco

3. 3
Kubernetes Maturity Waves
The Journey is longer than we all though
R u n n i n g E x t e n d i n g C o n t r o l l e r s
& O p e r a t o r s

4. 4
Running
We need to get things running first
W r a p p i n g o u r L e g a c y U n d e r s t a n d i n g K 8 s
C o n c e p t s
A r c h i t e c t i n g f o r K 8 s

5. 5
Running
Some very good presentations
S p e n c e r G i b b
S p l i t t i n g M o n o l i t h
t o M i c r o s e r v i c e s
J a m e s S t r a c h a n
Kubernetes for Java Devs
Spencer Gibb & Salaboy
Spring Cloud on PKS

6. 6
Extending
We want K8s to understand about our business natively
D e f i n i n g o u r
o w n C o n c e p t s / R e s o u r c e s
C R D s L i n k i n g o u t C R D s t o
K 8 s R e s o u r c e s

7. 7
Extending
Some examples
I s t i o K n a t i v e J e n k i n s X

8. 8
Operators
https://operatorhub.io/
C o n t r o l / M o n i t o r R e c o n c i l e I n t e g r a t e

9. 9
Books
C l o u d N a t i v e J a v a K u b e r n e t e s P a t t e r n s C l o u d N a t i v e
I n f r a s t r u c t u r e
( r e c o n c i l e r p a t t e r n )

10. 10
Let’s see some
code/yaml!
https://github.com/salaboy/extending-k8s-with-spring-cloud

11. 11
github.com/jvm-operators github.com/ap4k/ap4k github.com/kubernetes-sigs/
kind
Links

12. 12
Questions?
https://github.com/salaboy/extending-k8s-with-spring-cloud