UI Error after clearing network discoveries

Users
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1

I am facing a serious issue with maas nowadays, I think it all begun since I cleared all discoveries and all of the sudden I could not access to Machines section/tab on the GUI ‘http://10.10.10.11:5240/MAAS/r/machines’

when I go there it gives me the following error.
Error:An unexpected error has occurred, please try refreshing your browser window.

I have checked regioned.log and noticed 304 error and have no clue about it.

2020-11-25 16:42:56 regiond: [info] 10.10.10.2 GET /MAAS/r/machines HTTP/1.1 --> 304 NOT_MODIFIED (referrer: -; agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36)
2020-11-25 16:42:56 regiond: [info] 10.10.10.2 GET /MAAS/accounts/login/ HTTP/1.1 --> 200 OK (referrer: http://10.10.10.11:5240/MAAS/r/machines; agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36)
2020-11-25 16:42:57 regiond: [info] 10.10.10.2 GET /MAAS/api/2.0/scripts/?include_script=true HTTP/1.1 --> 200 OK (referrer: http://10.10.10.11:5240/MAAS/r/machines; agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36)
2020-11-25 16:42:57 regiond: [info] 10.10.10.2 GET /MAAS/api/2.0/scripts/?include_script=true HTTP/1.1 --> 200 OK (referrer: http://10.10.10.11:5240/MAAS/r/machines; agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36)
2020-11-25 16:43:00 regiond: [info] 10.10.10.2 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2020-11-25 16:43:00 regiond: [info] 10.10.10.2 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2020-11-25 16:43:00 regiond: [info] 10.10.10.2 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)

I also see network discovery now is in loading status and does not much anything.

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2

ftr, note that @sysnasri is using version 2.8.2 – check the bottom of the screenshots for details.

3

also note that @sysnasri has filed bug https://bugs.launchpad.net/maas/+bug/1905595 with more details on this issue.

4

Hi @sysnasri, were you able to confirm that your region controller is able to reach the rack controllers? This error message could certainly be better, but it typically indicates some kind of networking issue when you see this.

5

The maas and other servers have been installed in my local lab, I believe it was network issue after I cleared all discovered hosts.

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