Rancher 2.5.5 can't upgrade Longhorn app to greater v1.2.6

[manuel-koch]

Running Rancher v2.5.5

I managed to upgrade Longhorn via the longhorn app from version 1.1.x to version 1.2.6 via Cluster UI
( not the new-style Cluster Explorer ).
But now I’m stuck with that version, this is the latest version that Cluster UI shows.
How can I upgrade Longhorn ?

I’ve tried to “refresh” all the catalogs, but Longhorn seems to be stuck in v1.2.6, new newer versions is shown in Rancher Cluster UI.

See github issue 41863.

I known, I’m late in the game ( my used rancher and k8 is outdated ) but I’m in the mids of upgrading rancher / longhorn / k8s.
Any hint or help appreciated !

[manuel-koch]

I upgraded rancher to latest v2.5 version ( v2.5.17 ) and refreshed catalogs - but still UI shows no newer version avail for longhorn.

[manuel-koch]

I managed to upgrade longhorn:

• upgraded rancher to v2.6.10
• run the longhorn migration script to switch from rancher legacy-ui to new charts-ui, see Instruction: How To Migrate Longhorn Chart Installed In Old Rancher UI To The Chart In New Rancher UI | The Longhorn Knowledge Base
• upgraded longhorn to v1.3.3 followed by v1.4.1 using the new chart-ui