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Kubernetes investigate: running the control plane 1-2 versions ahead of the worker nodes - skew policy #84

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obriensystems opened this issue Dec 20, 2024 · 1 comment
Open

Kubernetes investigate: running the control plane 1-2 versions ahead of the worker nodes - skew policy #84

obriensystems opened this issue Dec 20, 2024 · 1 comment
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obriensystems commented Dec 20, 2024 •
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Some kubernetes providers push towards the latest (currently 1.32) version. Staying on an older version can cause extended support finops issues.

https://aws.amazon.com/blogs/containers/amazon-eks-extended-support-for-kubernetes-versions-pricing/
see AWS cluster insights
https://docs.aws.amazon.com/eks/latest/userguide/cluster-insights.html

we are used to kubectl skew, test out skew on the cluster with ideally workloads using services near or at deprecation
https://kubernetes.io/releases/version-skew-policy/
@obriensystems obriensystems self-assigned this Dec 20, 2024
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obriensystems commented Dec 20, 2024 •
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EKS testing 1.30 to 1.31 upgrade

michaelobrien@mbp8 src % kubectl get nodes         
NAME                            STATUS                        ROLES    AGE     VERSION
ip-172-31-23-127.ec2.internal   Ready                         <none>   9m13s   v1.31.3-eks-59bf375
ip-172-31-27-5.ec2.internal     Ready                         <none>   15m     v1.31.3-eks-59bf375
ip-172-31-32-235.ec2.internal   Ready                         <none>   10m     v1.31.3-eks-59bf375
ip-172-31-57-166.ec2.internal   Ready                         <none>   13m     v1.31.3-eks-59bf375
ip-172-31-62-13.ec2.internal    Ready                         <none>   11m     v1.31.3-eks-59bf375
ip-172-31-72-105.ec2.internal   Ready                         <none>   15m     v1.31.3-eks-59bf375
ip-172-31-74-176.ec2.internal   Ready                         <none>   12m     v1.31.3-eks-59bf375
ip-172-31-80-165.ec2.internal   NotReady,SchedulingDisabled   <none>   56d     v1.30.4-eks-a737599
ip-172-31-87-114.ec2.internal   Ready                         <none>   8m14s   v1.31.3-eks-59bf375
michaelobrien@mbp8 src % kubectl get nodes -o wide
NAME                            STATUS                        ROLES    AGE     VERSION               INTERNAL-IP     EXTERNAL-IP      OS-IMAGE         KERNEL-VERSION                  CONTAINER-RUNTIME
ip-172-31-23-127.ec2.internal   Ready                         <none>   9m18s   v1.31.3-eks-59bf375   172.31.23.127   54.83.189.38     Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-27-5.ec2.internal     Ready                         <none>   15m     v1.31.3-eks-59bf375   172.31.27.5     54.1..    Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-32-235.ec2.internal   Ready                         <none>   10m     v1.31.3-eks-59bf375   172.31.32.235   3.89.209.5       Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-57-166.ec2.internal   Ready                         <none>   13m     v1.31.3-eks-59bf375   172.31.57.166   44.211.151.211   Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-62-13.ec2.internal    Ready                         <none>   11m     v1.31.3-eks-59bf375   172.31.62.13    44...   Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-72-105.ec2.internal   Ready                         <none>   15m     v1.31.3-eks-59bf375   172.31.72.105   44.200.200.131   Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-74-176.ec2.internal   Ready                         <none>   12m     v1.31.3-eks-59bf375   172.31.74.176   3.220.174.98     Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-80-165.ec2.internal   NotReady,SchedulingDisabled   <none>   56d     v1.30.4-eks-a737599   172.31.80.165   35.168.110.61    Amazon Linux 2   5.10.226-214.880.amzn2.x86_64   containerd://1.7.22
ip-172-31-87-114.ec2.internal   Ready                         <none>   8m19s   v1.31.3-eks-59bf375   172.31.87.114   34.236.37.254    Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
michaelobrien@mbp8 src % kubectl get nodes -o wide
NAME                            STATUS                     ROLES    AGE   VERSION               INTERNAL-IP     EXTERNAL-IP      OS-IMAGE         KERNEL-VERSION                  CONTAINER-RUNTIME
ip-172-31-27-5.ec2.internal     Ready                      <none>   19m   v1.31.3-eks-59bf375   172.31.27.5     54..    Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-32-235.ec2.internal   Ready                      <none>   14m   v1.31.3-eks-59bf375   172.31.32.235   3.89.209.5       Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-57-166.ec2.internal   Ready                      <none>   17m   v1.31.3-eks-59bf375   172.31.57.166   44.211.151.211   Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-62-13.ec2.internal    Ready,SchedulingDisabled   <none>   15m   v1.31.3-eks-59bf375   172.31.62.13    44.202.253.217   Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-72-105.ec2.internal   Ready                      <none>   19m   v1.31.3-eks-59bf375   172.31.72.105   44....   Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-74-176.ec2.internal   Ready                      <none>   16m   v1.31.3-eks-59bf375   172.31.74.176   3.220.174.98     Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-87-114.ec2.internal   Ready                      <none>   12m   v1.31.3-eks-59bf375   172.31.87.114   34.236.37.254    Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
michaelobrien@mbp8 src % kubectl get nodes -o wide
NAME                            STATUS                     ROLES    AGE   VERSION               INTERNAL-IP     EXTERNAL-IP      OS-IMAGE         KERNEL-VERSION                  CONTAINER-RUNTIME
ip-172-31-27-5.ec2.internal     Ready                      <none>   22m   v1.31.3-eks-59bf375   172.31.27.5     54...    Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-32-235.ec2.internal   Ready                      <none>   17m   v1.31.3-eks-59bf375   172.31.32.235   3.89.209.5       Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-57-166.ec2.internal   Ready                      <none>   20m   v1.31.3-eks-59bf375   172.31.57.166   44.211.151.211   Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-72-105.ec2.internal   Ready                      <none>   22m   v1.31.3-eks-59bf375   172.31.72.105   44....   Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-74-176.ec2.internal   Ready,SchedulingDisabled   <none>   19m   v1.31.3-eks-59bf375   172.31.74.176   3.220.174.98     Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-87-114.ec2.internal   Ready                      <none>   15m   v1.31.3-eks-59bf375   172.31.87.114   34.236.37.254    Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
michaelobrien@mbp8 src % kubectl get nodes -o wide
NAME                            STATUS   ROLES    AGE     VERSION               INTERNAL-IP     EXTERNAL-IP      OS-IMAGE         KERNEL-VERSION                  CONTAINER-RUNTIME
ip-172-31-27-5.ec2.internal     Ready    <none>   5h31m   v1.31.3-eks-59bf375   172.31.27.5     54....    Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23
ip-172-31-72-105.ec2.internal   Ready    <none>   5h31m   v1.31.3-eks-59bf375   172.31.72.105   44...  Amazon Linux 2   5.10.228-219.884.amzn2.x86_64   containerd://1.7.23

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