Eks upgrade from_1.12_to_1.14

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This document discusses upgrading an Amazon EKS cluster from version 1.12 to 1.14. It provides links to AWS documentation on EKS version releases and deprecations. It also discusses the process for upgrading the EKS control plane and worker nodes using different tools, things to watch out for during upgrades, and monitoring upgrade progress.

Software

Hoseok Seo
EKS Upgrade from 1.12 to 1.14

EKS 1.15 release
https://aws.amazon.com/about-aws/whats-new/2020/03/amazon-eks-now-supports-kubernetes-version-1-15/

Containers roadmap about EKS 1.15
https://github.com/aws/containers-roadmap/issues/380

EKS 1.12 deprecation
https://aws.amazon.com/about-aws/whats-new/2020/03/amazon-eks-now-supports-kubernetes-version-1-15/

Amazon EKS Version Deprecation
https://docs.aws.amazon.com/eks/latest/userguide/kubernetes-versions.html

Kube-proxy?
http://www.iorchard.net/2016/11/23/kube_proxy_lb_evenness_test_ko.html

How to upgrade EKS cluster?
EKS cluster should have been done through terraform

Things to Watch out for upgrading EKS cluster
1. The pod security policy admission controller
2. Patch the kube-proxy daemonset
https://docs.aws.amazon.com/eks/latest/userguide/update-cluster.html

[ec2-user@ip-172-16-10-210 upgrade4]$ time ./check_update.sh test-upgrade6 1.13
upgrade EKS Cluster test-upgrade6 version 1.13
Start date : Sat Mar 21 13:41:55 UTC 2020
End date : Sat Mar 21 13:52:51 UTC 2020
real 10m55.566s
user 1m30.586s
sys 0m12.956s

[ec2-user@ip-172-16-10-210 upgrade4]$ time ./check_update.sh test-upgrade6 1.14
upgrade EKS Cluster test-upgrade6 version 1.14
Start date : Sat Mar 21 13:53:08 UTC 2020
End date : Sat Mar 21 14:13:47 UTC 2020
real 20m38.569s
user 2m51.588s
sys 0m24.569s

How to upgrade EKS worker node?
EKS worker node upgrade should have been done through terraform

https://docs.aws.amazon.com/eks/latest/userguide/update-stack.html
Things to Watch out for upgrading EKS worker node

EKS Worker node upgrade by CloudFormation
https://docs.aws.amazon.com/eks/latest/userguide/update-stack.html

EKS Cluster upgrade by eksctl
https://eksctl.io/usage/cluster-upgrades/

https://kubernetes.io/docs/tasks/administer-cluster/cluster-management/
Maintenance on a Node

EKS Rolling Update by hellofresh
https://github.com/hellofresh/eks-rolling-update

Change Launch Template Version on Auto Scaling group

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Eks upgrade from_1.12_to_1.14

1. Hoseok Seo EKS Upgrade from 1.12 to 1.14

2. EKS 1.15 release https://aws.amazon.com/about-aws/whats-new/2020/03/amazon-eks-now-supports-kubernetes-version-1-15/

3. Containers roadmap about EKS 1.15 https://github.com/aws/containers-roadmap/issues/380

4. EKS 1.12 deprecation https://aws.amazon.com/about-aws/whats-new/2020/03/amazon-eks-now-supports-kubernetes-version-1-15/

5. Amazon EKS Version Deprecation https://docs.aws.amazon.com/eks/latest/userguide/kubernetes-versions.html

6. AWS EKS Console

7. EKS 1.12 Version console

8. EKS 1.13 Version console

9. EKS 1.14 Version console

10. EKS 1.15 Version console

11. EKS Version Cadence

12. Kube-proxy? http://www.iorchard.net/2016/11/23/kube_proxy_lb_evenness_test_ko.html

13. Each service version by EKS version

14. How to upgrade EKS cluster? EKS cluster should have been done through terraform

15. Things to Watch out for upgrading EKS cluster 1. The pod security policy admission controller 2. Patch the kube-proxy daemonset https://docs.aws.amazon.com/eks/latest/userguide/update-cluster.html

16. EKS Cluster upgrade by AWS Console

17. EKS Cluster upgrade by AWS CLI

18. EKS Cluster upgrade by eksctl

19. EKS Cluster upgrade by Terraform

20.

21. [ec2-user@ip-172-16-10-210 upgrade4]$ time ./check_update.sh test-upgrade6 1.13 upgrade EKS Cluster test-upgrade6 version 1.13 Start date : Sat Mar 21 13:41:55 UTC 2020 End date : Sat Mar 21 13:52:51 UTC 2020 real 10m55.566s user 1m30.586s sys 0m12.956s

22. [ec2-user@ip-172-16-10-210 upgrade4]$ time ./check_update.sh test-upgrade6 1.14 upgrade EKS Cluster test-upgrade6 version 1.14 Start date : Sat Mar 21 13:53:08 UTC 2020 End date : Sat Mar 21 14:13:47 UTC 2020 real 20m38.569s user 2m51.588s sys 0m24.569s

23. After EKS Cluster upgrade

24. Kube-proxy daemonset patch

25. How to upgrade EKS worker node? EKS worker node upgrade should have been done through terraform

26. https://docs.aws.amazon.com/eks/latest/userguide/update-stack.html Things to Watch out for upgrading EKS worker node

27. EKS Worker node upgrade by CloudFormation https://docs.aws.amazon.com/eks/latest/userguide/update-stack.html

28. EKS Cluster upgrade by eksctl https://eksctl.io/usage/cluster-upgrades/

29. EKS Worker node upgrade by Terraform

30. https://kubernetes.io/docs/tasks/administer-cluster/cluster-management/ Maintenance on a Node

31. EKS Rolling Update by hellofresh https://github.com/hellofresh/eks-rolling-update

32. Change Launch template version - 1

33. Change Launch template version - 2

34. Change Launch template version - 3