KubeZero/admin/v1.23/pre-upgrade.sh

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#!/bin/bash
# Migrate addons and network values from local kubeadm-values.yaml on controllers into CM
# - remove secrets from addons
# - enable cilium
# Create kubeadm-values CM if not available
kubectl get cm -n kube-system kubeadm-values || \
kubectl create configmap -n kube-system kubeadm-values
kubectl get cm -n kube-system kubezero-values || \
kubectl create configmap -n kube-system kubezero-values
# tweak local kubeadm for upgrade later on
yq eval -i '.global.clusterName = strenv(CLUSTERNAME) |
.global.highAvailable = env(HIGHAVAILABLE)' \
${HOSTFS}/etc/kubernetes/kubeadm-values.yaml
# extract addons
yq e '.addons |
del .clusterBackup.repository |
del .clusterBackup.password |
.clusterBackup.image.tag = strenv(KUBE_VERSION) |
{"addons": .}' ${HOSTFS}/etc/kubernetes/kubeadm-values.yaml > $WORKDIR/addons-values.yaml
# extract network
yq e '.network |
.cilium.enabled = true |
.multus.defaultNetworks = ["cilium"] |
.cilium.cluster.name = strenv(CLUSTERNAME) |
{"network": .}' ${HOSTFS}/etc/kubernetes/kubeadm-values.yaml > $WORKDIR/network-values.yaml
# get current argo cd values
kubectl get application kubezero -n argocd -o yaml | yq .spec.source.helm.values > ${WORKDIR}/argo-values.yaml
# merge all into new CM
yq ea '. as $item ireduce ({}; . * $item ) |
.global.clusterName = strenv(CLUSTERNAME) |
.global.highAvailable = env(HIGHAVAILABLE)' $WORKDIR/addons-values.yaml ${WORKDIR}/network-values.yaml $WORKDIR/argo-values.yaml > $WORKDIR/kubezero-values.yaml
# Update kubezero-values CM
kubectl get cm -n kube-system kubezero-values -o=yaml | \
yq e '.data."values.yaml" |= load_str("/tmp/kubezero/kubezero-values.yaml")' | \
kubectl replace -f -
kubezero_chart_version=$(yq .version /charts/kubezero/Chart.yaml)
# update argo app, create new from scratch as Argo is really picky being patched
# autosync DISABLED !!!
cat > $WORKDIR/kube-argo.yaml <<EOF
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
name: kubezero
namespace: argocd
spec:
project: kubezero
source:
repoURL: https://cdn.zero-downtime.net/charts
chart: kubezero
targetRevision: $kubezero_chart_version
destination:
server: https://kubernetes.default.svc
namespace: argocd
syncPolicy: {}
EOF
yq eval -i '.spec.source.helm.values |= load_str("/tmp/kubezero/kubezero-values.yaml")' $WORKDIR/kube-argo.yaml
kubectl apply -f $WORKDIR/kube-argo.yaml