After using k8s and Rancher in several months, I decided to upgrade the current system to:

• microk8s v1.27.x
• rancher v2.8.1

Upgrade microk8s

Update your system first:

sudo apt update

Next, check the current version of microk8s:

microk8s kubectl get node

The result something likes:

root@vmi1535815:~# microk8s kubectl get node
NAME | STATUS | ROLES | AGE | VERSION |
vmi1535815 | Ready | | 87d | v1.26.14 |

Perform the refresh command:

sudo snap refresh microk8s --classic --channel=1.27

Result returned:

microk8s (1.27/stable) v1.27.11 from Canonical✓ refreshed

Now, check the current version of microk8s again, the result something likes:

root@vmi1535815:~# microk8s kubectl get node
NAME | STATUS | ROLES | AGE | VERSION |
vmi1535815 | Ready | | 87d | v1.27.11 |

Upgrade Rancher

microk8s helm3 upgrade rancher rancher-stable/rancher \
  --namespace cattle-system \
  --set hostname=rancher.nready.net \
  --set ingress.tls.source=letsEncrypt \
  --set [email protected] \
  --set letsEncrypt.ingress.class=nginx \
  --set replicas=2 \
  --version 2.8.1

Waiting for several minutes, the Rancher will be restarted and updated to the newer version.

Ref:

• https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/upgrades
• https://www.suse.com/suse-rancher/support-matrix/all-supported-versions/rancher-v2-8-1/
• https://github.com/rancher/rancher/releases/tag/v2.8.2#installupgrade-notes
• https://github.com/rancher/rancher/issues/41840

Last modified on March 10th, 2024 at 10:54 pm

k8s rancher