99 lines
3.0 KiB
Markdown
99 lines
3.0 KiB
Markdown
# Upgrade to KubeZero V2(Argoless)
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## (optional) Upgrade control plane nodes / worker nodes
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- Set kube version in the controller config to eg. `1.18`
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- Update kube-controller and worker stacks with latest CFN code
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- terminate controller node(s)
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- once all controller nodes successfully upgraded replace worker nodes in a rolling fashion via. drain / terminate / rinse-repeat
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## ArgoCD
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- disable all auto-sync and "prune" features to prevent that eg. namespaces from previous apps get removed
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- either remove auto-sync from old values.yaml and run deploy one last time, trigger kubezero sync !
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- or disable manual via Argo UI starting with Kubezero app itself
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- uninstall argo helm chart:
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`helm uninstall kubezero -n argocd`
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- remove all "argocd.argoproj.io/instance" labels from namespaces to prevent namespace removal later on:
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`./scripts/remove_argo_ns.sh`
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## KubeZero - Part 1
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- migrate values.yaml to new structure, adapt as needed
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& update new central kubezero location in git and merge cluster configs
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- upgrade all CRDs:
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`./bootstrap.sh crds all clusters/$CLUSTER ../../../kubezero/charts`
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- upgrade first components:
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`./bootstrap.sh deploy calico,cert-manager,kiam,aws-ebs-csi-driver,aws-efs-csi-driver clusters/$CLUSTER ../../../kubezero/charts`
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## Istio - Brief DOWNTIME STARTS !
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- Istio, due to changes of the ingress namespace we need brief downtime
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- delete istio operators, to remove all pieces, remove operator itself
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`./scripts/delete_istio_17.sh`
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- deploy istio and istio-ingress via bootstrap.sh
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`./bootstrap.sh deploy all clusters/$CLUSTER ../../../kubezero/charts`
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- patch all VirtualServices via script to new namespace
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`./scripts/patch_vs.sh`
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!! DOWNTIME ENDS !!
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## KubeZero - Part 2
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- push kubezero & cluster config to git
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- upgrade all remaining components and install new ArgoCD:
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`./bootstrap.sh deploy all clusters/$CLUSTER ../../../kubezero/charts`
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## Verification / Tests
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- verify argocd incl. kubezero app
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- verify all argo apps status
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- verify all the things
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# Changelog
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## High level / Admin changes
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- ArgoCD is now optional
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- ArgoCD is NOT required nor used during initial cluster bootstrap
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- the initial bootstrap script now uses the same config as ArgoCD later on
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- the initial bootstrap is WAY faster and re-try safe
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## Individual changes
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### Cert-manager
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- local issuer is now a cluster issuer
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- all resources moved to cert-manager namespace
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### Kiam
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- check certs and function due to cert-manager changes
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- set priorty class
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### Logging
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- ES/Kibana version bump, new ECK operator
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### ArgoCD
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- version bump, new app of app architecure
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### Metrics
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- version bumps
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- all servicemonitor resources are now in the same namespaces as the apps
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- check all metrics still work
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### Calico
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- version bump
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### EBS
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- version bump
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### Istio
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- operator removed, deployment migrated to helm, cleanups
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- version bump to 1.8
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- no more policy pod by default
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- all ingress in dedicated new namespace istio-ingress as well as dedicated helm chart
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- set priorty class
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