KubeZero/admin/upgrade_cluster.sh

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#!/bin/bash -e
VERSION="v1.23"
[ -n "$DEBUG" ] && set -x
# unset any AWS_DEFAULT_PROFILE as it will break aws-iam-auth
unset AWS_DEFAULT_PROFILE
controller_nodes_upgrade() {
echo "Deploying node upgrade daemonSet..."
cat <<EOF | kubectl apply -f -
apiVersion: apps/v1
kind: DaemonSet
metadata:
name: kubezero-upgrade-${VERSION//.}
namespace: kube-system
labels:
app: kubezero-upgrade
spec:
selector:
matchLabels:
name: kubezero-upgrade-${VERSION//.}
template:
metadata:
labels:
name: kubezero-upgrade-${VERSION//.}
spec:
tolerations:
- key: node-role.kubernetes.io/master
operator: Exists
effect: NoSchedule
initContainers:
- name: kubezero-upgrade-${VERSION//.}
image: busybox
command: ["/bin/sh"]
args: ["-x", "-c", "[ -d /host/opt/cni/bin ] && { mkdir -p /host/usr/libexec/cni && cp /host/opt/cni/bin/* /host/usr/libexec/cni; } || true" ]
volumeMounts:
- name: host
mountPath: /host
containers:
- name: kubezero-upgrade-${VERSION//.}-wait
image: busybox
command: ["sleep", "3600"]
volumes:
- name: host
hostPath:
path: /
type: Directory
EOF
#kubectl rollout status daemonset -n kube-system kubezero-upgrade-${VERSION//.} --timeout 300s
kubectl delete ds kubezero-upgrade-${VERSION//.} -n kube-system
}
echo "Deploying cluster upgrade job ..."
cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: Pod
metadata:
name: kubezero-upgrade-${VERSION//.}
namespace: kube-system
labels:
app: kubezero-upgrade
spec:
hostNetwork: true
hostIPC: true
hostPID: true
containers:
- name: kubezero-admin
image: public.ecr.aws/zero-downtime/kubezero-admin:${VERSION}
imagePullPolicy: Always
command: ["kubezero.sh"]
args:
- cluster_upgrade
- apply_network
- apply_addons
env:
- name: DEBUG
value: "$DEBUG"
- name: NODE_NAME
valueFrom:
fieldRef:
fieldPath: spec.nodeName
volumeMounts:
- name: host
mountPath: /host
- name: workdir
mountPath: /tmp
securityContext:
capabilities:
add: ["SYS_CHROOT"]
volumes:
- name: host
hostPath:
path: /
type: Directory
- name: workdir
emptyDir: {}
nodeSelector:
node-role.kubernetes.io/control-plane: ""
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
restartPolicy: Never
EOF
kubectl wait pod kubezero-upgrade-${VERSION//.} -n kube-system --timeout 120s --for=condition=initialized 2>/dev/null
while true; do
kubectl logs kubezero-upgrade-${VERSION//.} -n kube-system -f 2>/dev/null && break
sleep 3
done
kubectl delete pod kubezero-upgrade-${VERSION//.} -n kube-system