Re: [tor-relays] Monitoring a Tor-Relay - Telegraf / InfluxDB / Grafana ?

Hi

I use telegraf to gather general metrics (e.g. CPU, disk usage, PostgreSQL stats, etc.) but I'm not using it to monitor my Tor instances.

Le 08/12/2018 à 04:01, petrarca@protonmail.ch a écrit :

Questions I could not answer yet myself include e.g.

• What will be the performance impact of running Telegraf on a Tor-Realy (CPU, disk, I/O,...)?

I don't think telegraf will have a big impact but that will depend on how many metrics you'll be gathering and at what frequency.

• What happens if the InfluxDB (running on another system) is not reachable (maintenance, outages) - is the data lost or buffered somehow?

telegraf has a buffer mechanism Have a look at the configuration reference: https://github.com/influxdata/telegraf/blob/master/docs/CONFIGURATION.md#age...

• I would like to also keep see old/historical data but not as granular as more recent data - is there any way to boild down old data, e.g. to only keep hourly data for data older that a month etc.?

You could use InfluxDB's retention policies and continuous queries to do so.