JG-mirror/Kubernetes/Upgrade

Recommendations Before Upgrading

1. Snapshot / Backup your VMs!
2. Backup data and volumes if necessary
3. Drain nodes / scale down deployments

Upgrade Rancher

helm upgrade rancher rancher-latest/rancher \
 --namespace cattle-system \
 --set hostname=rancher.my.org

Upgrade RKE2 (Each node, not Admin!)

sudo curl -sfL https://get.rke2.io | INSTALL_RKE2_CHANNEL=latest sh -

then servers:

sudo systemctl restart rke2-server

or agents

sudo systemctl restart rke2-agent

Upgrade K3S (Each node, not Admin!)

sudo curl -sfL https://get.k3s.io | INSTALL_K3S_CHANNEL=latest <EXISTING_K3S_ENV> sh -s - <EXISTING_K3S_ARGS>

then servers:

sudo systemctl restart k3s

or agents

sudo systemctl restart k3s-agent

Upgrade Longhorn

kubectl apply -f https://raw.githubusercontent.com/longhorn/longhorn/v1.5.3/deploy/longhorn.yaml

Upgrade Metallb

1. Change version on the delete command to the version you are currently running (e.g., v0.13.11)
2. Change version on the apply to the new version (e.g., v0.13.12)
3. Ensure your Lbrange is still the one you want (check ipAddressPool.yaml)

kubectl delete -f https://raw.githubusercontent.com/metallb/metallb/v0.13.11/config/manifests/metallb-native.yaml
kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.13.12/config/manifests/metallb-native.yaml
kubectl apply -f ipAddressPool.yaml
kubectl apply -f https://raw.githubusercontent.com/JamesTurland/JimsGarage/main/Kubernetes/RKE2/l2Advertisement.yaml

Upgrade Kube-VIP

1. Delete the daemonset in Rancher or use kubectl delete
2. Redeploy the daemonset with updated values (check kube-vip file)

kubectl delete -f kube-vip
kubectl apply -f kube-vip