The Libera bridge is not monitored

[progval]

In the last three months, the Libera bridge has experienced three outages affecting all channels (#1601, #1628, #1633).

There should probably be some automated monitoring to detect this kind of outage, rather than relying on users noticing and reporting them.

For example, a bot with its own private channel / portal room, which sends a message on both Matrix and IRC, and checks if it was received on the other end within 5 seconds (or whatever delay is considered acceptable); then reports it to the appropriate channels, such as https://status.matrix.org/ (which currently shows 100.0% uptime of the Libera in the last three months)

[Half-Shot]

We have automated monitoring but the types of failures that we have seen are not fitting the models we expect. The status.matrix.org page is manually updated at the moment, and I think we could do better to update this as fires happen.

[Half-Shot]

I believe this situation is now improved, we've got monitoring on the bridge for:

• Total outages of the process
• Increased waves of connections (indicating spam or dangerous behaviours)
• Unexpected number of clients stuck in the "connecting" state.

This doesn't cover everything, and our next objectives are to track the # of dropped messages (and ideally, some sort of E2E monitoring to see where messages are going missing).

[progval]

there are currently a number of outages reported on https://github.com/matrix-org/libera-chat/issues, including clients stuck reconnecting (https://github.com/matrix-org/libera-chat/issues/12, https://github.com/matrix-org/libera-chat/issues/24), but status.matrix.org shows 100% green.

[toabi]

Lots of puppets can't currently join the IRC side… but status says "green".