[tor-relays] Relay in a stop/start loop

Hi list

I have upgraded recently my relays (totorbe*) to CentOS8 + tor 0.4.2.7 and they all seemed to run properly
This morning, I just noticed a weird behavior on one of them (no idea since when this is going on)

When starting tor, it goes to the point of IP identification and then starts shutting down ("Interrupt: we have stopped accepting new connections...")
It attempts then to restart immediately and loops start --> interrupt --> start etc...

Any idea where too start investigating??

[root@totorbex tor]# cat notices.log
Apr 06 10:32:47.000 [notice] Starting with guard context "default"
Apr 06 10:32:47.000 [notice] Signaled readiness to systemd
Apr 06 10:32:47.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now.
Apr 06 10:32:47.000 [notice] Guessed our IP address as 82.212.170.79 (source: 128.31.0.34).
Apr 06 10:32:48.000 [notice] Delaying directory fetches: We are hibernating or shutting down.
Apr 06 10:33:17.000 [notice] Clean shutdown finished. Exiting.
Apr 06 10:33:18.000 [notice] Tor 0.4.2.7 opening log file.
Apr 06 10:33:18.719 [notice] Tor 0.4.2.7 running on Linux with Libevent 2.1.8-stable, OpenSSL 1.1.1c, Zlib 1.2.11, Liblzma 5.2.4, and Libzstd 1.4.4.
Apr 06 10:33:18.719 [notice] Tor can't help you if you use it wrong! Learn how to be safe at https://www.torproject.org/download/download#warning
Apr 06 10:33:18.719 [notice] Read configuration file "/usr/share/tor/defaults-torrc".
Apr 06 10:33:18.719 [notice] Read configuration file "/etc/tor/torrc".
Apr 06 10:33:18.723 [notice] Based on detected system memory, MaxMemInQueues is set to 5791 MB. You can override this by setting MaxMemInQueues by hand.
Apr 06 10:33:18.724 [notice] Opening Socks listener on 127.0.0.1:9050
Apr 06 10:33:18.725 [notice] Opened Socks listener on 127.0.0.1:9050
Apr 06 10:33:18.725 [notice] Opening Control listener on 127.0.0.1:9051
Apr 06 10:33:18.725 [notice] Opened Control listener on 127.0.0.1:9051
Apr 06 10:33:18.725 [notice] Opening OR listener on 0.0.0.0:9001
Apr 06 10:33:18.725 [notice] Opened OR listener on 0.0.0.0:9001
Apr 06 10:33:18.725 [notice] Opening Directory listener on 0.0.0.0:9030
Apr 06 10:33:18.725 [notice] Opened Directory listener on 0.0.0.0:9030
Apr 06 10:33:18.000 [notice] Not disabling debugger attaching for unprivileged users.
Apr 06 10:33:20.000 [notice] Parsing GEOIP IPv4 file /usr/share/tor/geoip.
Apr 06 10:33:20.000 [notice] Parsing GEOIP IPv6 file /usr/share/tor/geoip6.
Apr 06 10:33:20.000 [notice] Configured to measure statistics. Look for the *-stats files that will first be written to the data directory in 24 hours from now.
Apr 06 10:33:21.000 [notice] Your Tor server's identity key fingerprint is 'TotorBEx E514A3818BC87E87B0B82B6494672F69CED5350D'
Apr 06 10:33:21.000 [notice] Bootstrapped 0% (starting): Starting
Apr 06 10:34:00.000 [notice] Starting with guard context "default"
Apr 06 10:34:00.000 [notice] Signaled readiness to systemd
Apr 06 10:34:00.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now.
Apr 06 10:34:00.000 [notice] Guessed our IP address as 82.212.170.79 (source: 128.31.0.34).
Apr 06 10:34:01.000 [notice] Delaying directory fetches: We are hibernating or shutting down.
Apr 06 10:34:30.000 [notice] Clean shutdown finished. Exiting.
Apr 06 10:34:31.000 [notice] Tor 0.4.2.7 opening log file.
Apr 06 10:34:31.721 [notice] Tor 0.4.2.7 running on Linux with Libevent 2.1.8-stable, OpenSSL 1.1.1c, Zlib 1.2.11, Liblzma 5.2.4, and Libzstd 1.4.4.
Apr 06 10:34:31.721 [notice] Tor can't help you if you use it wrong! Learn how to be safe at https://www.torproject.org/download/download#warning
Apr 06 10:34:31.721 [notice] Read configuration file "/usr/share/tor/defaults-torrc".
Apr 06 10:34:31.721 [notice] Read configuration file "/etc/tor/torrc".
Apr 06 10:34:31.725 [notice] Based on detected system memory, MaxMemInQueues is set to 5791 MB. You can override this by setting MaxMemInQueues by hand.
Apr 06 10:34:31.726 [notice] Opening Socks listener on 127.0.0.1:9050
Apr 06 10:34:31.726 [notice] Opened Socks listener on 127.0.0.1:9050
Apr 06 10:34:31.726 [notice] Opening Control listener on 127.0.0.1:9051
Apr 06 10:34:31.727 [notice] Opened Control listener on 127.0.0.1:9051
Apr 06 10:34:31.727 [notice] Opening OR listener on 0.0.0.0:9001
Apr 06 10:34:31.727 [notice] Opened OR listener on 0.0.0.0:9001
Apr 06 10:34:31.727 [notice] Opening Directory listener on 0.0.0.0:9030
Apr 06 10:34:31.727 [notice] Opened Directory listener on 0.0.0.0:9030
Apr 06 10:34:31.000 [notice] Not disabling debugger attaching for unprivileged users.
Apr 06 10:34:33.000 [notice] Parsing GEOIP IPv4 file /usr/share/tor/geoip.
Apr 06 10:34:33.000 [notice] Parsing GEOIP IPv6 file /usr/share/tor/geoip6.
Apr 06 10:34:33.000 [notice] Configured to measure statistics. Look for the *-stats files that will first be written to the data directory in 24 hours from now.
Apr 06 10:34:34.000 [notice] Your Tor server's identity key fingerprint is 'TotorBEx E514A3818BC87E87B0B82B6494672F69CED5350D'
Apr 06 10:34:34.000 [notice] Bootstrapped 0% (starting): Starting
Apr 06 10:35:13.000 [notice] Starting with guard context "default"
Apr 06 10:35:13.000 [notice] Signaled readiness to systemd
Apr 06 10:35:13.000 [notice] Interrupt: we have stopped accepting new connections, and will shut down in 30 seconds. Interrupt again to exit now.