From your logs, I find multiple commanded shutdowns
Jun 14, 2023 02:01:20.189 [140344928738104] DEBUG - Shutting down with signal 15 (Terminated)
Jun 14, 2023 02:01:20.189 [140344928738104] DEBUG - Ordered to stop server.
Jun 14, 2023 02:01:20.189 [140345010686608] DEBUG - Stopping server...
Jun 14, 2023 02:01:20.189 [140345010686608] DEBUG - HttpServer: Stopping server.
Jun 14, 2023 02:01:20.190 [140344922409784] DEBUG - MetadataItemClusterRequestHandler: a shutdown event has been received
Jun 14, 2023 02:01:20.190 [140344922409784] DEBUG - TranscodeJobManager: [Running] onServerShutdown
Jun 14, 2023 02:01:20.190 [140344922409784] DEBUG - TranscodeJobManager: [Running] -> [Shutdown]
Jun 14, 2023 02:01:20.190 [140345010686608] DEBUG - Server stopped.
Jun 14, 2023 02:01:20.190 [140345010686608] DEBUG - NetworkService: Stopping advertisement.
Jun 14, 2023 02:01:20.191 [140345010686608] DEBUG - Killing plug-ins.
Jun 14, 2023 02:01:20.246 [140345010686608] DEBUG - [com.plexapp.system] Killing.
Jun 14, 2023 02:05:52.196 [140526594530104] DEBUG - Shutting down with signal 15 (Terminated)
Jun 14, 2023 02:05:52.196 [140526594530104] DEBUG - Ordered to stop server.
Jun 14, 2023 02:05:52.196 [140526676470416] DEBUG - Stopping server...
Jun 14, 2023 02:05:52.196 [140526676470416] DEBUG - HttpServer: Stopping server.
Jun 14, 2023 02:05:52.197 [140526588201784] DEBUG - MetadataItemClusterRequestHandler: a shutdown event has been received
Jun 14, 2023 02:05:52.197 [140526588201784] DEBUG - TranscodeJobManager: [Running] onServerShutdown
Jun 14, 2023 02:05:52.197 [140526588201784] DEBUG - TranscodeJobManager: [Running] -> [Shutdown]
Jun 14, 2023 02:05:52.197 [140526676470416] DEBUG - Server stopped.
Jun 14, 2023 02:05:52.197 [140526676470416] DEBUG - NetworkService: Stopping advertisement.
Jun 14, 2023 02:05:52.197 [140526676470416] DEBUG - Killing plug-ins.
Jun 14, 2023 13:18:09.509 [140580141112120] DEBUG - Shutting down with signal 15 (Terminated)
Jun 14, 2023 13:18:09.509 [140580141112120] DEBUG - Ordered to stop server.
Jun 14, 2023 13:18:09.509 [140580223056528] DEBUG - Stopping server...
Jun 14, 2023 13:18:09.509 [140580223056528] DEBUG - HttpServer: Stopping server.
Jun 14, 2023 13:18:09.510 [140580134783800] DEBUG - MetadataItemClusterRequestHandler: a shutdown event has been received
Jun 14, 2023 13:18:09.510 [140580134783800] DEBUG - TranscodeJobManager: [Running] onServerShutdown
Jun 14, 2023 13:18:09.510 [140580134783800] DEBUG - TranscodeJobManager: [Running] -> [Shutdown]
Jun 14, 2023 13:18:09.510 [140580223056528] DEBUG - Server stopped.
Jun 14, 2023 13:18:09.510 [140580223056528] DEBUG - NetworkService: Stopping advertisement.
Jun 14, 2023 13:18:09.510 [140580223056528] DEBUG - Killing plug-ins.
Jun 14, 2023 13:18:09.561 [140580223056528] DEBUG - [com.plexapp.system] Killing.
Jun 14, 2023 13:18:09.566 [140580141112120] WARN - JobManager: Could not find job for handle 3440
Jun 14, 2023 13:18:09.572 [140580223056528] DEBUG - ChildProcessMonitor: Waiting for Plex Tuner Service to exit.
Jun 14, 2023 13:18:09.572 [140580223056528] DEBUG - [JobRunner] Signalling job ID 3485 with 2
Jun 14, 2023 13:18:09.615 [140580141112120] DEBUG - Jobs: '/usr/lib/plexmediaserver/Plex Tuner Service' exit code for process 3485 is 0 (success)
Jun 14, 2023 13:18:09.617 [140580089666360] DEBUG - [ChildProcessMonitor] Plex Tuner Service exited.
Jun 14, 2023 13:18:09.630 [140580223056528] DEBUG - Job was already killed, not killing again.
Jun 14, 2023 13:18:09.630 [140580223056528] DEBUG - Database: Shutting down.
The biggest issue I find is a runaway network adapter. it’s constantly being reset.
Is the server getting its address via DHCP or is it static?
If DHCP – Check the lease time on the DHCP server. There’s an error there. Lease time should be at least 86400 seconds (1 day)
Jun 14, 2023 01:15:27.637 [139998002092856] DEBUG - NetworkInterface: received Netlink message len=64, type=RTM_NEWLINK, flags=0x0
Jun 14, 2023 01:15:27.637 [139998002092856] DEBUG - NetworkInterface: Netlink information message family=0, type=1, index=3, flags=0x11043, change=0x0
Jun 14, 2023 01:15:27.637 [139998002092856] DEBUG - Network change.
Jun 14, 2023 01:15:27.637 [139998002092856] DEBUG - NetworkInterface: Notified of network changed (force=0)
Jun 14, 2023 01:15:27.638 [139998002092856] DEBUG - Network change notification but nothing changed.
Jun 14, 2023 01:15:43.381 [139997999983416] DEBUG - [NSB/SSDP] Parsing SSDP schema for http://169.254.9.155:63444/upnp/xml/devices/ManageableDevice1.xml
Jun 14, 2023 01:15:46.449 [139998017108792] WARN - [HttpClient/HCl#122] HTTP error requesting GET http://169.254.9.155:63444/upnp/xml/devices/ManageableDevice1.xml (7, Couldn't connect to server) (Failed to connect to 169.254.9.155 port 63444 after 3068 ms: Couldn't connect to server)
Jun 14, 2023 01:15:46.450 [139997999983416] DEBUG - [NSB/SSDP] Parsing SSDP schema for http://192.168.1.170:9080
Jun 14, 2023 01:15:46.465 [139998017108792] DEBUG - [HttpClient/HCl#123] HTTP/1.1 (0.0s) 200 response from GET http://192.168.1.170:9080 (reused)
Jun 14, 2023 01:15:56.078 [139997999983416] DEBUG - [NSB/SSDP] Parsing SSDP schema for http://169.254.4.119:63444/upnp/xml/devices/ManageableDevice1.xml
Jun 14, 2023 01:15:59.113 [139998002092856] DEBUG - NetworkInterface: received Netlink message len=64, type=RTM_NEWLINK, flags=0x0
Jun 14, 2023 01:15:59.113 [139998002092856] DEBUG - NetworkInterface: Netlink information message family=0, type=1, index=3, flags=0x11043, change=0x0
Jun 14, 2023 01:15:59.113 [139998002092856] DEBUG - Network change.
Jun 14, 2023 01:15:59.113 [139998002092856] DEBUG - NetworkInterface: Notified of network changed (force=0)
Jun 14, 2023 01:15:59.114 [139998002092856] DEBUG - Network change notification but nothing changed.
Jun 14, 2023 01:15:59.153 [139998017108792] WARN - [HttpClient/HCl#124] HTTP error requesting GET http://169.254.4.119:63444/upnp/xml/devices/ManageableDevice1.xml (7, Couldn't connect to server) (Failed to connect to 169.254.4.119 port 63444 after 3074 ms: Couldn't connect to server)
Jun 14, 2023 01:16:16.661 [139997999983416] DEBUG - [NSB/SSDP] Parsing SSDP schema for http://169.254.9.155:63444/upnp/xml/devices/ManageableDevice1.xml
Jun 14, 2023 01:16:19.729 [139998017108792] WARN - [HttpClient/HCl#125] HTTP error requesting GET http://169.254.9.155:63444/upnp/xml/devices/ManageableDevice1.xml (7, Couldn't connect to server) (Failed to connect to 169.254.9.155 port 63444 after 3067 ms: Couldn't connect to server)
Jun 14, 2023 01:16:21.986 [139997999983416] DEBUG - [NSB/SSDP] Parsing SSDP schema for http://192.168.1.170:9080
Jun 14, 2023 01:16:22.002 [139998017108792] DEBUG - [HttpClient/HCl#126] HTTP/1.1 (0.0s) 200 response from GET http://192.168.1.170:9080 (reused)
Jun 14, 2023 01:16:33.217 [139998002092856] DEBUG - NetworkInterface: received Netlink message len=64, type=RTM_NEWLINK, flags=0x0
Jun 14, 2023 01:16:33.217 [139998002092856] DEBUG - NetworkInterface: Netlink information message family=0, type=1, index=3, flags=0x11043, change=0x0
Jun 14, 2023 01:16:33.217 [139998002092856] DEBUG - Network change.
Jun 14, 2023 01:16:33.217 [139998002092856] DEBUG - NetworkInterface: Notified of network changed (force=0)
Jun 14, 2023 01:16:33.218 [139998002092856] DEBUG - Network change notification but nothing changed.
Jun 14, 2023 01:16:33.558 [139997999983416] DEBUG - [NSB/SSDP] Parsing SSDP schema for http://169.254.4.119:63444/upnp/xml/devices/ManageableDevice1.xml
Jun 14, 2023 01:16:36.625 [139998017108792] WARN - [HttpClient/HCl#127] HTTP error requesting GET http://169.254.4.119:63444/upnp/xml/devices/ManageableDevice1.xml (7, Couldn't connect to server) (Failed to connect to 169.254.4.119 port 63444 after 3066 ms: Couldn't connect to server)
You had one crash which occurred right after the adapter reset. It’s possible PMS got caught in a weird state and couldn’t deal with it.
Notice the IP address. It’s the IP address an ethernet port gets when not configured / plugged in.
Jun 14, 2023 01:16:55.409 [139998017108792] WARN - [HttpClient/HCl#12a] HTTP error requesting GET http://169.254.9.155:63444/upnp/xml/devices/ManageableDevice1.xml (7, Couldn't connect to server) (Failed to connect to 169.254.9.155 port 63444 after 449 ms: Couldn't connect to server)
Jun 14, 2023 01:16:55.409 [139997983009592] WARN - [Req#12f] FeatureManager: Couldn't get features. Trying again soon.
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Is there a loose / bad cable ?