Server crashes

[paulvdv]

Hello,

I have a public Minetest server and it crashes too often the last time. I guess there is a mod responseable for it, but I don't know which mod. When I look into the logs, it does not become clear to me (and I am an experienced Linux sysadmin). Till now I don't use the debug mode for logging.

How do you advice to look what will be wrong?

I am using Minetest 4.17 from Debian 10: https://packages.debian.org/buster/minetest

It is also possible that somebody does not like the server and does some kind of attack, hmm. Difficult to know what's wrong. No reproduceable problem.

With regards,
Paul

[paulvdv]

I've looked better, and I think I have to find "Runtime errors". I see runtime errors from the mods pyramids, ghost, and zombie. I have disabled pyramids and zombie, and I will disable ghost too when the server does crashes again.

[Krock]

What kind of runtime errors are those? Please provide the last few relevant lines from your debug.txt file.

[paulvdv]

What kind of runtime errors are those? Please provide the last few relevant lines from your debug.txt file.

I don't have a debug.txt, but I have a logfile /var/log/minetest/mintest.log. I guess this is the same.

For example this one this morning:

2019-09-01 10:28:06: ERROR[Main]: ServerError: AsyncErr: ServerThread::run Lua: Runtime error from mod 'ghost' in callback LuaABM::trigger(): ...re/games/minetest/mods/mob-engine/creatures/register.lua:498: attempt to index a nil value
2019-09-01 10:28:06: ERROR[Main]: stack traceback:
2019-09-01 10:28:06: ERROR[Main]: ...re/games/minetest/mods/mob-engine/creatures/register.lua:498: in function 'spawnerSpawn'
2019-09-01 10:28:06: ERROR[Main]: ...re/games/minetest/mods/mob-engine/creatures/register.lua:574: in function <...re/games/minetest/mods/mob-engine/creatures/register.lua:572>


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Most of the time it has to do with creatures and spawning.
But sometimes there is nothing, like here:

(...)
2019-09-01 11:42:05: ACTION[Server]: Letang139 takes animal_wolf:wolf from creative inventory
2019-09-01 11:42:11: ACTION[Server]: Letang139 punches object 3725: LuaEntitySAO at (49,4,19)
2019-09-01 11:42:11: ACTION[Server]: LuaEntitySAO at (49,4,19) punched by player Letang139, damage 9 hp, health now 1 hp
2019-09-01 11:42:11: ACTION[Server]: Letang139 punches object 3725: LuaEntitySAO at (48.9953,4,18.9973)
2019-09-01 11:42:11: ACTION[Server]: LuaEntitySAO at (48.9953,4,18.9973) punched by player Letang139, damage 1 hp, health now 0 hp


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With regrads,
Paul

[Walker]

i dont now, but was i see first, is that mob-engine ( doo you using this > https://github.com/minetest-mods/mob-engine ? ) is very old

secound: by the last error you posted, do you became a message in the terminal like "segmentation fault" ?

[paulvdv]

i dont now, but was i see first, is that mob-engine ( doo you using this > https://github.com/minetest-mods/mob-engine ? ) is very old

secound: by the last error you posted, do you became a message in the terminal like "segmentation fault" ?

No segmentation fault. I use mob-engine because of these problems, before I've used "creatures" and had also problems. mob-engine is newer. What do you use? creatures or the alternative mob-engine is important...

I also don't like I had to turn of those mods what work OK before.

With regards,
Paul

[Walker]

i use mobs_redo on my servers

[paulvdv]

i use mobs_redo on my servers

Thanks for your help. I have mobs_redo too. What I did now is remove mob-engine and all dependencies like sheep and so on. I am interested if that helps! I will have to clean-up a lot...

WIth regards,
Paul

[Walker]

clean up is easy

you only need to enter "/clearobjects quick" inside the game

[paulvdv]

clean up is easy

you only need to enter "/clearobjects quick" inside the game

What does this? Realize that people did build houses and so on, and I do not want all animals removed. I use at the moment the "cleaner" mod, but you have to learn it which objects has to be cleared.

I would like to tell that I have not seen any crash anymore ;-) Thanks a lot.

With regards,
Paul

[paulvdv]

Now I don't have "creatures" anymore, I miss the ghosts and zombies. And also the sheep and chicken, and maybe more. Is there another mod what works correct, and will add those?

[Walker]

have you the other mods from mobs_redo installed ?

by name:
https://notabug.org/TenPlus1/mobs_animal <-- Farm Animals
https://notabug.org/TenPlus1/mobs_monster <-- Monsters
https://notabug.org/TenPlus1/mobs_npc <-- Simple NPC and Trader
https://notabug.org/TenPlus1/mob_horse <-- Ridable Horses with horseshoe upgrades

because mobs_redo is only the engine, you need the others for content

[paulvdv]

have you the other mods from mobs_redo installed ?

by name:
https://notabug.org/TenPlus1/mobs_animal <-- Farm Animals
https://notabug.org/TenPlus1/mobs_monster <-- Monsters
https://notabug.org/TenPlus1/mobs_npc <-- Simple NPC and Trader
https://notabug.org/TenPlus1/mob_horse <-- Ridable Horses with horseshoe upgrades

because mobs_redo is only the engine, you need the others for content

Thanks! But I still not found zombies and ghosts like I know them from "creatures". With "ghost" I mean the one with green eyes on this picture: viewtopic.php?f=11&t=9917
With creatures I always found them under the ground, or in the evening, but not anymore.

And I see only sheep and chicken when I put them.

Still no crashes! ;-)

With regards,
Paul

[Walker]

zombie and ghost are in mobs_monster, and can be found in dark areas and caves

only sheep and chicken ? have you activated all mods ?
it is also possible that not all animals spawn from the beginning, just wait;)

[paulvdv]

zombie and ghost are in mobs_monster, and can be found in dark areas and caves

only sheep and chicken ? have you activated all mods ?
it is also possible that not all animals spawn from the beginning, just wait;)

Thanks for your help!
I don't see zombie and ghost in mobs_monster
But I see mob_ghost loading:
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2019-09-04 11:21:57: ACTION[Main]: MOD: mob_ghost loading ...
2019-09-04 11:21:57: ACTION[Main]: registering pattern flight_pattern_ghost
2019-09-04 11:21:57: ACTION[Main]: ADV_SPAWNING: registering spawner "ghost_spawner_1"
2019-09-04 11:21:57: ACTION[Main]: ADV_SPAWNING: now handling: 2 spawner definitions
2019-09-04 11:21:57: WARNING[Main]: Undeclared global variable "factions" accessed at /usr/share/games/minetest/mods/animals/mob_ghost/init.lua:215
2019-09-04 11:21:57: ACTION[Main]: adding mob ghost
2019-09-04 11:21:57: ACTION[Main]: MOD: mob_ghost mod version 0.0.1 loaded
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But I don't see ghosts or zombies in dark places.

And about the sheep and chicken: I can put them somewhere, but they don't come from themselves. Maybe I miss some spawner?

With regards,
Paul

[Walker]

Unfortunately, I can´t help you there, preferably you ask in mobs_redo thread ^^