[tor-dev] monitoring significant drops of flags in dirauth votes

[Damian Johnson]

Thanks nusenu! Nice idea, added it to DocTor...

https://gitweb.torproject.org/doctor.git/commit/?id=8945013

It gives a notice if flags issued by an authority are 50% different
from the conensus. Presently there's only one instance of that...

[consensus-health] NOTICE: moria1 had 756 HSDir flags in its vote but
the consensus had 2583

On Sun, Feb 11, 2018 at 1:21 AM, nusenu <nusenu-lists at riseup.net> wrote:
> Hi Damian and Tom,
>
> Roger discovered that dannenberg did not include any exit flags
> in certain votes anymore [1].
>
> It would be great if we would detect and notify about such events in the future.
>
> I see two places where this could be added:
>
> DocTor:
> a new check that alerts on events where a certain dir auth does
> either no longer include certain flags (guard, hsdir, exit, ..) at all
> or better: if the amount of relays with a certain flag significantly dropped
> by xx % from one vote to the next.
>
> consenus-health graphs:
> we have nice graphs per dirauth and bwauth, if we would have
> per-dirauthvote-per-flag (mainly guard, exit, hsdir - we have already running)
> graphs as well we could spot such events (and even trends)
> better. (btw: what caused there recent flat-line in graphs on 2018-02-03 - 2018-02-05)
>
> What do you think?
>
>
> thanks for considering it,
> nusenu
>
>
> [1] https://lists.torproject.org/pipermail/tor-relays/2018-February/014480.html
>
>
> --
> https://mastodon.social/@nusenu
> twitter: @nusenu_
>