A stationary PC should do fine.
What kind of minecraft server are you trying to run? (Vanilla, bukkit, spigot, forge, FTB, pocketmine…)
Do this overheating problem happen even when the minecraft server(s) is stopped?
Do it happen with a vanilla server?
There is (as far as I know) no part of MineOS and the WebUI that demands high load, nor uses loads of resources. But regardless: Did you try to upgrade the WebUI to the latest release? (There are several posts on how to do this, search the forum).
Your server is layered in this fasion:
on top of
Mineos / WebUI
on top of
Linux OS (Turnkey if you used the ISO provided here)
on top of
on top of
(this is a simplification, in reailty minecraft servers and MineOS runs in parallell, where MineOS references the servers)
Cooling, fans and hardware are handled by OS and BIOS according to what hardware repports. Hardware creates heat by usage, and as MineOS is really quite resource friendly, it is the minecraft servers that needs resources.
What I am getting to here is that you either have a hardware problem, or use a resource demanding server (for example a FTB with loads of mods, world generating software, and map generating software). If a vanilla server runs normally, but your chosen version do not, the answer to [quote=“Denniz, post:17, topic:1194”]
Is Minecraft really that ‘big’ so that i need a real big server?
is yes, for the servertype you wish to run. For a small vanilla server you should have no problems at all. If all cooling is working as it should.
I run on hefty hardware with loads of memory, and a hefty processor (you can read about my setup here in one of the replys here: Update: 3 servers, stable at last!). But if I activate world generation on one of my servers, I have to warn everybody that all my servers will be so laggy that they are unplayable. I also can only archive one server at a time, OR genereate / update online maps for one server at a time. My server is now three years old, and I am already starting to look at upgrading! (not only Mineos/minecraft reasons though, I use the server for other things as well ;D)
A few things you can check though:
Where do you store the PC? Does this location have enough airflow to keep cool? Or does it get hot in there as well? Your PC works like a heater, and if that heat is not removed, the room / cupboard / storage will keep getting hotter. When your PC starts to draw in hot air, it’s cooling gets less efficient, since it tries to cool a hot processor with hot air…
Further up I reccomended that you open up your laptop to clean it. I will repeat this, but this time for your new hardware (and it being a PC / stationary it should be far simpler). Open it up, check all fans, and try to remove as much dust, hair and gunk from the fans as possible. Check visually that all fans are running as they should. Take the fan off the processor (only the fan, not the cooling ribs) and check the ribs and the underside of the fans for dust, hair and gunk. Remove all you find (and can). Even better for your CPU: consider upgrading the cooling system for your CPU to a better one. You might even consider adding cabinet fans to draw in more air, if your PC supports this.
BIOS / Hardware:
In the bios you can check the CPU. Is it overclocked? Reset it to standard settings. You can even consider underclocking your CPU. Underclocking means you need less power to rund the processor, at the cost of procsessor speed. This also means it produces less heat. Overclocking does the opposite. Gives you more speed by pushing more power (electricity) through it, and forcing it to work faster. This produces a lot more heat!