2023-11-22 11:55:34 +00:00
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# KubeZero 1.27
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## What's new - Major themes
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- all KubeZero and support AMIs based on latest Alpine 3.18.4
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- updated and improved hardening of Istio Ingress Gateways
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2023-11-29 11:38:21 +00:00
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- IPv6 support for Ingress
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2023-11-22 11:55:34 +00:00
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- moved ECK operator into new kubezero-operators module
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- new, optional, OpenSearch operator
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2023-11-22 17:51:09 +00:00
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- all instances now enforce IMDSv2
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2023-11-22 11:55:34 +00:00
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2023-11-28 18:42:00 +00:00
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## Fixes
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- `kubectl top nodes` works now using node-exporter metrics rather than cadvisor
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2023-11-22 11:55:34 +00:00
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## Version upgrades
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- cilium 1.14.4
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- istio 1.19.4
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2023-11-28 18:42:00 +00:00
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- fluent-bit 2.2.0
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- ArgoCD 2.9
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- Prometheus / Grafana
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2023-11-22 11:55:34 +00:00
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### FeatureGates
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- CustomCPUCFSQuotaPeriod
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2023-11-30 21:13:27 +00:00
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- [MemoryQoS](https://kubernetes.io/blog/2023/05/05/qos-memory-resources/)
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2023-11-22 11:55:34 +00:00
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# Upgrade
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`(No, really, you MUST read this before you upgrade)`
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Ensure your Kube context points to the correct cluster !
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1. Review CFN config for controller and workers, no mandatory changes during this release though
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2. Upgrade CFN stacks for the control plane *ONLY* !
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Updating the workers CFN stacks would trigger rolling updates right away !
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3. Trigger cluster upgrade:
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`./admin/upgrade_cluster.sh <path to the argocd app kubezero yaml for THIS cluster>`
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4. Review the kubezero-config and if all looks good commit the ArgoApp resouce for Kubezero via regular git
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git add / commit / push `<cluster/env/kubezero/application.yaml>`
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5. Reboot controller(s) one by one
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Wait each time for controller to join and all pods running.
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Might take a while ...
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6. Upgrade CFN stacks for the workers.
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This in turn will trigger automated worker updates by evicting pods and launching new workers in a rolling fashion.
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Grab a coffee and keep an eye on the cluster to be safe ...
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Depending on your cluster size it might take a while to roll over all workers!
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7. Re-enable ArgoCD by hitting <return> on the still waiting upgrade script
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2023-11-30 21:13:27 +00:00
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8. Head to the ArgoCD UI and sync all KubeZero apps to verify all are synced successfully.
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2023-11-22 11:55:34 +00:00
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## Known issues
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So far so good.
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