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The upgrade rancher dilemna

OK.

It's been awhile since I have not upgraded Rancher and the K3S cluster infra and I think it's maybe thge good time to upgrade my infra to be up to date.

Problem is that I fear this upgrade because I went in the past into some big issues like the rancher webgui not accessible and haf to restore back all the vms of the infra.

But well, that's not a good reason to not to upgrade!

So, I have decided to make it more clean and have a way to:

  1. Backup
  2. Plan
  3. Test
  4. Do
  5. Validate

the update tasks.

This time I really be organized and do this update once for all!

So, my initial plan is to use rancher 2.7.5 because the 2.7.6 and the 2.7.7 seems to be in RC with and not sure exactly what is the difference between the 2...

Anyway!

Let's have a look at my current setup:

  • 3 master nodes (centos 7.9)
  • 3 workers (centos 7.9)
  • kube-vip used as the VIP manager

Current version of K3s (I used k3sup to install it):

[root@node-1 ~]# kubectl get nodes -o wide

NAME       STATUS   ROLES                       AGE      VERSION         INTERNAL-IP     EXTERNAL-IP   OS-IMAGE                KERNEL-VERSION                CONTAINER-RUNTIME

node-1     Ready    control-plane,etcd,master   2y142d   v1.21.12+k3s1   192.168.2.100   <none>        CentOS Linux 7 (Core)   3.10.0-1160.88.1.el7.x86_64   containerd://1.4.13-k3s1

node-2     Ready    control-plane,etcd,master   442d     v1.21.12+k3s1   192.168.2.101   <none>        CentOS Linux 7 (Core)   3.10.0-1160.49.1.el7.x86_64   containerd://1.4.13-k3s1

node-3     Ready    control-plane,etcd,master   431d     v1.21.12+k3s1   192.168.2.102   <none>        CentOS Linux 7 (Core)   3.10.0-1160.88.1.el7.x86_64   containerd://1.4.13-k3s1

worker-1   Ready    <none>                      2y142d   v1.21.12+k3s1   192.168.2.103   <none>        CentOS Linux 7 (Core)   3.10.0-1160.49.1.el7.x86_64   containerd://1.4.13-k3s1

worker-2   Ready    <none>                      2y142d   v1.21.12+k3s1   192.168.2.104   <none>        CentOS Linux 7 (Core)   3.10.0-1160.88.1.el7.x86_64   containerd://1.4.13-k3s1

worker-3   Ready    <none>                      356d     v1.21.12+k3s1   192.168.2.105   <none>        CentOS Linux 7 (Core)   3.10.0-1160.49.1.el7.x86_64   containerd://1.4.13-k3s1


 

 

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