App update failed due to temporary problem

[Robin]

I noticed at some point an app I don't use very often failed to update. I noticed this because it wasn't running, and was in error state. In the repair section of settings, I saw this:

The update operation failed with the following error:

Network Error: Network error downloading icon : getaddrinfo EAI_AGAIN api.cloudron.io

My guess is that I had a network outage at some point at just the wrong time while the app was trying to update, and this then caused it to hang in that error state permanently.

Perhaps this sort of transient failure should (automatically) schedule a retry later on?

[girish]

@Robin This can also happen if the unbound (internal DNS is not working). Can you go to Services -> Unbound . Is it green?

[Robin]

Yeah, it's green. I was fiddling with switch config a few days ago which I think was the cause in this case.

[Robin]

Aha, you were right actually.. Noticed some other quirks around DNS (most noticeably, it was repeatedly failing when I was ssh'd in). Turns out that unbound isn't very happy when something else above it hijacks DNS traffic (which I'm doing to filter our junk).

Quick fix for now was to add a forward-zone to unbound, but I wonder what the right way to handle - and detect - this is...

[girish]

Not sure if relevant to your situation, but to bypass specific DNS entries you can also do:

local-zone: example.com typetransparent
local-data: "my.example.com A 172.18.0.1"