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# generala
adamant-kite-43734
12/20/2023, 10:07 PMThis message was deleted.
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hundreds-evening-84071
12/20/2023, 10:08 PMas long as you read and follow support matrix and review upgrade doc you will be fine (from past experience)
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wonderful-beach-90900
12/20/2023, 10:10 PMyeah, but i ran in to some bugs on my second upgrade (upgrading from 2.6.6 to 2.7.6) and they're not something we've been able to solve or get support for here.
wonderful-beach-90900
12/20/2023, 10:11 PMunfortunately, one of my downstream clusters is still using ceph-deployed-via-rook which means migrating to a new rancher will probably involve setting up an external ceph, mirroring, and then setting up CSI to make the use thereof transparent to the devs on this project.
wonderful-beach-90900
12/20/2023, 10:13 PMon the current rancher install which is trying to upgrade its local cluster i see this:
Copy code
2023/11/12 15:28:51 [ERROR] error syncing 'rancher-rke2-charts': handler helm-clusterrepo-ensure: git -C /var/lib/rancher-data/local-catalogs/v2/rancher-rke2-charts/675f1b63a
0a83905972dcab2794479ed599a6f41b86cd6193d69472d0fa889c9 fetch origin -- 36be8e6366a31e354917ad6c7152f206bc8a54a7 error: exit status 128, detail: error: Server does not allowwonderful-beach-90900
12/20/2023, 10:13 PMbut also issues with user impersonation tokens under some circumstances (we can mitigate that issue though)