Rancher version I have installed is V2.5.11, the video I followed was less than 6 months old and searching online for more information has not been helpful, hence I started looking through Rancher Documentation.
Now I see that there is Rancher V2.6, but the way I installed V2.5.11 did not indicate a version and I found the install method indicated in the video documented on the Rancher install page for V2.5 but the V2.6 install method is not indicated to be able to work in the same method.
How do I upgrade V2.5 to V2.6?
It is indicated on the V2.5 page that I should be able to run something like this;
curl -sfL https://get.rancher.io | INSTALL_RANCHERD_VERSION=v2.6.3 sh -
However this has not worked.
It appears to me that I need to start again with a new VM and use a different install method for V2.6
After reading the V2.6 installation requirements, it indicates that;
In Kubernetes v1.20, the dockershim became deprecated, and Docker became deprecated as a container runtime for Kubernetes.
I think that this is a misleading statement from what I have read is the “dockershim” is being migrated to another project owner and docker can still be used with Kubernetes. It’s even the documented installation method for Rancher. Perhaps this misleading because there is “Kubernetes” and Apps that are managed by the “Kubernetes” standard?
So now after reading through other Rancher projects, I come across Longhorn, this sounds like something I’d be interested in but then reading the documentation I found this is not compatible with what I have at home.