Can't log in to the Rancher: Rancher UI continuously loading loading

[vladbeha109]

Setup

• Rancher version: v2.8.2
• Browser type & version: Google Chrome

Describe the bug
Starting from March one time per 1/2 week we can't login/browse the Rancher, it's indefinitely loading, on the container logs we see only errors related to WebSocket disconnection.

Rancher stuck on loading -> Restarted rancher - > the one node became unavailable -> restarted node -> Cluster is back to normal (sometimes node restart doesn't help).

To Reproduce
No actual scenario

Result
Rancher UI indefinitely loading

Expected Result
No issues that can impact user experience

Screenshots

Additional context
Infrastructure description:
The rancher container is running on a separate server in Azure - Linux (ubuntu 18.04)/Standard D8s v3
The cluster was created through the Rancher - 3 Linux nodes(Control plane, etcd, worker) and 5 Windows nodes
Kubernetes Version: v1.24.16 +rke2r1

NAME STATUS ROLES AGE VERSION
qa-neo-wnode1 Ready worker 103d v1.24.16
qa-neo-wnode2 Ready worker 103d v1.24.16
qa-neo-wnode3 Ready worker 103d v1.24.16
qa-neo-wnode4 Ready worker 96d v1.24.16
qa-neo-wnode5 Ready worker 41d v1.24.16
qa-neo-worker1 Ready control-plane,etcd,master,worker 226d v1.24.16+rke2r1
qa-neo-worker2 Ready control-plane,etcd,master,worker 227d v1.24.16+rke2r1
qa-neo-worker3 Ready control-plane,etcd,master,worker 39d v1.24.16+rke2r1

Logs
024-04-02T08:15:16.668277574Z"}
{"log":"W0402 08:17:33.040326 48 transport.go:301] Unable to cancel request for *client.addQuery\n","stream":"stderr","time":"2024-04-02T08:17:33.040648063Z"}
{"log":"W0402 08:17:33.153651 48 transport.go:301] Unable to cancel request for *client.addQuery\n","stream":"stderr","time":"2024-04-02T08:17:33.153831208Z"}
{"log":"W0402 08:17:33.153684 48 transport.go:301] Unable to cancel request for *client.addQuery\n","stream":"stderr","time":"2024-04-02T08:17:33.153862008Z"}
{"log":"W0402 08:17:33.153711 48 transport.go:301] Unable to cancel request for *client.addQuery\n","stream":"stderr","time":"2024-04-02T08:17:33.153881508Z"}
{"log":"W0402 08:17:33.282101 48 transport.go:301] Unable to cancel request for *client.addQuery\n","stream":"stderr","time":"2024-04-02T08:17:33.282265573Z"}
{"log":"W0402 08:17:35.946516 48 transport.go:301] Unable to cancel request for *client.addQuery\n","stream":"stderr","time":"2024-04-02T08:17:35.94684618Z"}
{"log":"W0402 08:17:37.544349 48 transport.go:301] Unable to cancel request for *client.addQuery\n","stream":"stderr","time":"2024-04-02T08:17:37.544720791Z"}
{"log":"W0402 08:17:37.601628 48 transport.go:301] Unable to cancel request for *client.addQuery\n","stream":"stderr","time":"2024-04-02T08:17:37.60176672Z"}
{"log":"W0402 08:17:37.971121 48 transport.go:301] Unable to cancel request for *client.addQuery\n","stream":"stderr","time":"2024-04-02T08:17:37.971340089Z"}
{"log":"2024/04/02 08:18:09 [ERROR] Error during subscribe websocket: close sent\n","stream":"stdout","time":"2024-04-02T08:18:09.520165786Z"}

[torchiaf]

Hi, thanks for reporting this issue.
Could you provide some additional information ( logs and screenshots):

• Does 'indefinitely loading' mean you have the blank page showing a spinner icon or something else ?
• Do you have any https errors in the browser's console?
• Could you double check the support matrix page? It seems Rancher is running on unsupported k8s version https://www.suse.com/suse-rancher/support-matrix/all-supported-versions/rancher-v2-8-2/

[gaktive]

Hi @vladbeha109 !

We haven't heard from you in a while. Were you able to resolve the questions back in April about your issue? As noted, the version of Rancher you were running doesn't support the version of Kubernetes in place so you'll need to upgrade that.

I'll close this ticket for now. Feel free to reopen this when you have time to get back to us or file a new ticket.