39 lines
1.2 KiB
Bash
Executable file
39 lines
1.2 KiB
Bash
Executable file
#!/usr/bin/env bash
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# echoIRCd liveness probe: prove the acceptor + core are alive and responsive with a
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# pre-registration PING/PONG round-trip, and restart the daemon if it doesn't answer.
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# Catches a hung core (process alive but not serving), which Restart=on-failure can't.
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#
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# It deliberately does NOT register (no NICK/USER), so it never triggers connect/quit
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# server-notices — the probe is invisible in the oper snotice stream. Run by
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# echoircd-liveness.timer.
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set -u
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PORT="${1:-6767}"
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if python3 - "$PORT" <<'PY'
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import socket, sys, time
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port = int(sys.argv[1])
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try:
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s = socket.create_connection(("127.0.0.1", port), timeout=5)
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s.settimeout(5)
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# a pre-registration PING is answered with a PONG, without creating a client session
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s.sendall(b"PING :liveness\r\n")
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data = b""
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end = time.time() + 6
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while time.time() < end:
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d = s.recv(4096)
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if not d:
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break
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data += d
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if b"PONG" in data:
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break
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s.close()
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sys.exit(0 if b"PONG" in data else 1)
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except OSError:
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sys.exit(1)
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PY
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then
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exit 0
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fi
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echo "echoircd liveness: no PONG from 127.0.0.1:${PORT} within timeout — restarting echoircd-dev.service"
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systemctl restart echoircd-dev.service
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