dedicated: Export prometheus metrics

[pg9182]

The dedicated server should export metrics. I will probably work on an initial version of this in my docker image, but I may end up just directly implementing it in the launcher itself.

Some ideas for useful metrics:

• counter northstar_instance_ticks_total
• counter northstar_instance_uptime_seconds
• gauge northstar_instance_info{arguments, game_port, auth_port} (more?) = 1 (maybe?)
• gauge northstar_match_player_count
• gauge northstar_match_player_limit
• gauge northstar_match_info{playlist_name, map_name} = 1
• gauge northstar_match_duration_seconds
• histogram northstar_network_client_latency_milliseconds{uid} (maybe?)
• counter northstar_network_receive_bytes
• counter northstar_network_transmit_bytes
• counter northstar_network_receive_packets
• counter northstar_network_transmit_packets
• guage northstar_cpu_seconds_total
• guage northstar_memory_physical_bytes
• guage northstar_memory_virtual_bytes

[p0358]

I should drop 2 links I saved when doing my research on this area of stuff before I gave up for that time being in hopes they'll be helpful for inspiration:

https://www.reddit.com/r/gamedev/comments/dwolyk/monitoring_serverside_ecs_application_with/

https://skylar.tech/tracking-game-server-statistics-using-node-red-influxdb-and-grafana/

[pg9182]

Somewhat related, but relevant, so I'll note it here: I threw together a prometheus exporter for the master server and created a few dashboards (temporary links: [1] [2]).

[ASpoonPlaysGames]

@pg9182 is this completed/stale? (can it be closed?)

[pg9182]

Stale.