kubezero/docs/v1.24.md

KubeZero 1.24

TODO

What's new - Major themes

• Cilium is now the default CNI, calico got removed
• cluster-autoscaler is enabled by default on AWS

Version upgrades

• cilium
• metallb
• nvidia-device-plugin
• aws-node-termination-handler
• aws-ebs-csi-driver
• aws-efs-csi-driver

FeatureGates

• PodAndContainerStatsFromCRI
• DelegateFSGroupToCSIDriver

Upgrade

(No, really, you MUST read this before you upgrade)

• Ensure your Kube context points to the correct cluster !

1. Review CFN config for controller and workers ( enable containerProxy, remove legacy version settings etc )

2. Upgrade CFN stacks for the control plane and all worker groups

3. Trigger fully-automated cluster upgrade:
   ./admin/upgrade_cluster.sh <path to the argocd app kubezero yaml for THIS cluster>

4. Reboot controller(s) one by one
   Wait each time for controller to join and all pods running. Might take a while ...

5. Launch new set of workers eg. by doubling desired for each worker ASG
   once new workers are ready, cordon and drain all old workers
   The cluster-autoscaler will remove the old workers automatically after about 10min !

6. If all looks good, commit the ArgoApp resouce for Kubezero, before re-enabling ArgoCD itself.
   git add / commit / push <cluster/env/kubezero/application.yaml>