#31291: non-public relay health metrics for operators -------------------------+------------------------------ Reporter: nusenu | Owner: (none) Type: enhancement | Status: new Priority: Medium | Component: Core Tor/Tor Version: | Severity: Normal Keywords: | Actual Points: Parent ID: | Points: Reviewer: | Sponsor: -------------------------+------------------------------ https://lists.torproject.org/pipermail/tor-dev/2019-February/013655.html
Compared to other server daemons (webserver, DNS server, ..) tor provides little data for operators to detect operational issues and anomalies. I'd suggest to provide the following stats via an prometheus compatible HTTP endpoint with authentication support (most of the data is already written to logfiles by default) - total amount of memory used by the tor process - amount of currently open circuits - circuit handshake stats (TAP / NTor) DoS mitigation stats - amount of circuits killed with too many cells - amount of circuits rejected - marked addresses - amount of connections closed - amount of single hop clients refused - amount of closed/failed circuits broken down by their reason value https://gitweb.torproject.org/torspec.git/tree/tor-spec.txt#n1402 https://gitweb.torproject.org/torspec.git/tree/control-spec.txt#n1994 - amount of closed/failed OR connections broken down by their reason value https://gitweb.torproject.org/torspec.git/tree/control-spec.txt#n2205 If this causes a significant performance impact this feature should be disabled by default. cell stats - extra info cell stats as defined in: https://gitweb.torproject.org/torspec.git/tree/dir-spec.txt#n1072 -- Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31291> Tor Bug Tracker & Wiki <https://trac.torproject.org/> The Tor Project: anonymity online
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