Cloud Native Aarhus meetup talk about the opensource components StackSet Controller developed by Zalando SE https://github.com/zalando-incubator/stackset-controller

1. StackSets
Simplifying application
management in Kubernetes
Cloud Native Aarhus
November 6th 2018
MIKKEL LARSEN
@mikkeloscar
2018-11-06

2. 2
DEPLOYING TO PRODUCTION
My Application v1
https://my-application.io

3. 3
DEPLOYING TO PRODUCTION
My Application v1
https://my-application.io
My Application v2
https://preview-v2.my-application.io

4. 4
DEPLOYING TO PRODUCTION (BLUE/GREEN)
My Application v1
https://my-application.io
My Application v2
https://preview-v2.my-application.io

5. 5
DEPLOYING TO PRODUCTION (TRAFFIC SWITCHING)
https://my-application.io
My Application v2
https://preview-v2.my-application.io
My Application v1
1%
99%

6. 6
DEPLOYING TO PRODUCTION (TRAFFIC SWITCHING)
https://my-application.io
My Application v2
https://preview-v2.my-application.io
My Application v1
10%
90%

7. 7
DEPLOYING TO PRODUCTION (TRAFFIC SWITCHING)
https://my-application.io
My Application v2
https://preview-v2.my-application.io
My Application v1
50%
50%

8. 8
DEPLOYING TO PRODUCTION (TRAFFIC SWITCHING)
https://my-application.io
My Application v2
https://preview-v2.my-application.io
My Application v1
100%
0%

9. 9
APPLICATION STACK IN KUBERNETES
labels:
application: app-1
name: app-1
Ingress resource
Service resource
Deployment resource

10. 10
TRAFFIC SWITCHING
ROLLING UPDATE DEPLOYMENT
deployment
100%
Blue: 75%
Green: 25%

11. 11
TRAFFIC SWITCHING
ROLLING UPDATE DEPLOYMENT
deployment
100%
Blue: 99%
Green: 1%

12. 12
SKIPPER TRAFFIC SUPPORT
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: my-app
annotations:
zalando.org/backend-weights: |
{"my-app-v1": 90, "my-app-v2": 10}
spec:
rules:
- host: my-app.io
...
github.com/zalando/skipper

13. 13
MANUAL TRAFFIC SWITCHING
BLUE/GREEN DEPLOYMENT
80% 20%
service-v1
deployment-v1
service-v2
deployment-v2
IngressTemplate

14. 14
MANUAL TRAFFIC SWITCHING
BLUE/GREEN DEPLOYMENT
0% 100%
service-v1
deployment-v1
service-v2
deployment-v2
IngressTemplate
Need to clean up resources
manually :’(

15. 15
TRAFFIC SWITCHING
BLUE/GREEN DEPLOYMENT (StackSet)
stack: v2stack: v1
80% 20%

16. 16
STACKSET DEFINITION
apiVersion: zalando.org/v1
kind: StackSet
metadata:
name: my-app
spec:
ingress:
host: [my-application.io]
stackTemplate:
spec:
version: v1
podTemplate:
spec:
containers:
...
github.com/zalando-incubator/stackset-controller

17. 17
DEMO

18. 18
NEXT STEPS

19. 19
PRESCALE STACKS
stack: v2
stack: v1
100%
0%
HPA:
minReplicas: 3
maxReplicas: 30

20. 20
PRESCALE STACKS
stack: v2
stack: v1
0%
100%
HPA:
minReplicas: 3
maxReplicas: 30

21. 21
PRESCALE STACKS
stack: v2
stack: v1
Desired: 0%
Actual: 100%
Desired: 100%
Actual: 0%
HPA:
minReplicas: 3
maxReplicas: 30

22. 22
PRESCALE STACKS
stack: v1
Desired: 0%
Actual: 100%
Desired: 100%
Actual: 0%
stack: v2
HPA:
minReplicas: 3
maxReplicas: 30

23. 23
PRESCALE STACKS
stack: v1
Desired: 0%
Actual: 0%
Desired: 100%
Actual: 100%
stack: v2

24. 24
INTEGRATE WITH APPLICATION METRICS

25. 25
OPEN SOURCE
StackSet Controller
github.com/zalando-incubator/stackset-controller
AWS ALB Ingress controller
github.com/zalando-incubator/kube-ingress-aws-controller
Skipper HTTP Router & Ingress controller
github.com/zalando/skipper
External DNS
github.com/kubernetes-incubator/external-dns

26. MIKKEL LARSEN
mikkel.larsen@zalando.de
@mikkeloscar
Illustrations by @01k, @kcgreenn, @ntakayama
2018-11-06
SENIOR SOFTWARE ENGINEER
PLATFORM INFRASTRUCTURE