I’m having the same problem again as back when the key was revoked due to CircleCI. Can’t update grafana as key does not match. Got newest key according to install instructions on the website but it’s the same key, doesn’t help.
Is there a new key? or repository just temporary down?
I didn’t change anything, it “just stopped working” implying the key was somehow changed?
EDIT: and then what you linked to are actually what u tried to fix it, to no avail.
Err:5 https://packages.grafana.com/oss/deb stable InRelease
The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 963FA27710458545