[Dxspider-support] DXSpider stop responding to connections with 100% CPU

[Joe Reed]

I took a look at your original post and your netstat snippet shows 
multiple inbound connections from the same 2 ipv4 and ipv6 addresses.  
Comment out your RBN connection and restart the cluster node and see if 
that improves your situation.

Joe N9JR

On 2024-02-19 16:28, Normando IZ6FXS via Dxspider-support wrote:
> Happened twice today. Anybody can help?
> Can I activate more debug? Which?
> 
> Thanks,
> Norm IZ6FXS
> 
>> Il giorno 19 feb 2024, alle ore 09:55, iz6fxs--- via
>> Dxspider-support <dxspider-support at tobit.co.uk> ha scritto:
>> 
>> Hi!
>> 
>> Please help me troubleshooting this problem. DXspider
>> (cluster.iz6fxs.radio) suddenly stops responding with the
>> “login” prompt if you connect to it. I’m running the las
>> build.
>> When this happens the CPU is stuck to 100%:
>> 
>> <image003.jpg>
>> 
>> This is the content of the log:
>> 
>> root at cluster:/spider/local_data/log# tail 2024/02.dat
>> 1708206540^DXProt^PC92A E77AR -> 31.223.135.216 on DB0SUE-7
>> 1708206545^DXProt^PC92A EB1FEV -> 88.10.193.136 on EA4URE-3
>> 1708206551^DXProt^PC92A JJ3FBS -> 157.14.219.178 on JE3YEK
>> 1708206551^DXProt^PC92A 4X6TT -> 147.235.199.58 on NX9G
>> 1708206551^DXProt^PC92A W0FK -> 47.24.152.2 on NX9G
>> 1708206552^DXProt^PC92A EA1AOC -> 91.196.223.124 on EA4URE-5
>> 1708206561^DXProt^PC92A K4FTV -> 35.137.52.111 on EI7MRE
>> 1708206562^DXProt^PC92A KI0EB -> 24.245.245.113 on W1NR
>> 1708206567^DXProt^PC92A OK1CF -> 77.237.128.209 on EA4RCH-5
>> 1708206568^DXProt^PC92A DF1MM -> 176.1.242.227 on S50CLX
>> 
>> And this is the contect of the last lines of the debug log:
>> 
>> root at cluster:/spider/local_data/debug# tail -20 2024/048.dat
>> 1708206345^(*) RBN:WRITE_CACHE size: 420.774KB time to write: 21 mS
>> 1708206368^(*) RBN: ERROR invalid prefix/callsign T9CT from WB6BEE-#
>> on 28005.9, dumped
>> 1708206386^(nologchan)
>> 
> PC61^7012.0^W4NF^17-Feb-2024^2146Z^arrl^PA2A^SR2PUT^77.171.80.188^H26^~
>> 1708206386^(*) PCPROT: Bad Spotter PA2A, dropped
>> 1708206386^(nologchan)
>> 
> PC61^7012.0^W4NF^17-Feb-2024^2146Z^arrl^PA2A^SR2PUT^77.171.80.188^H23^~
>> 1708206386^(*) PCPROT: Bad Spotter PA2A, dropped
>> 1708206386^(nologchan)
>> 
> PC61^7012.0^W4NF^17-Feb-2024^2146Z^arrl^PA2A^SR2PUT^77.171.80.188^H24^~
>> 1708206386^(*) PCPROT: Bad Spotter PA2A, dropped
>> 1708206386^(nologchan)
>> 
> PC61^7012.0^W4NF^17-Feb-2024^2146Z^arrl^PA2A^SR2PUT^77.171.80.188^H23^~
>> 1708206386^(*) PCPROT: Bad Spotter PA2A, dropped
>> 1708206405^(*) RBN:WRITE_CACHE size: 420.606KB time to write: 18 mS
>> 1708206406^(*) RBN: ERROR invalid prefix/callsign 1E2OCV from
>> JN1ILK-# on 7007.5, dumped
>> 1708206420^(err) SK0MMR connected from 44.52.120.88
>> 1708206420^(*) RBN: noinrush: 0, setting inrushpreventor on SK0MMR
>> to 0
>> 1708206465^(err) RBN: no input from SK0MMR, disconnecting
>> 1708206465^(*) RBN:WRITE_CACHE size: 424.195KB time to write: 22 mS
>> 1708206480^(err) SK0MMR connected from 44.52.120.88
>> 1708206480^(*) RBN: noinrush: 0, setting inrushpreventor on SK0MMR
>> to 0
>> 1708206525^(err) RBN: no input from SK0MMR, disconnecting
>> 1708206525^(*) RBN:WRITE_CACHE size: 421.602KB time to write: 20 mS
>> 
>> I noticed that all the connections to the node are hung in
>> CLOSE_WAIT (hundreds if not more):
>> 
>> <image002.jpg>
>> 
>> I rebuilt the file users.v3j to no avail.
>> Restarting it with systemd is not working, you have to kill the
>> process manually to have it restarted.
>> 
>> Please help! Thanks,
>> Norm IZ6FXS
>> _______________________________________________
>> Dxspider-support mailing list
>> Dxspider-support at tobit.co.uk
>> https://mailman.tobit.co.uk/mailman/listinfo/dxspider-support
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