Hello guys, Does anybody knows what is the "child connection" on cgminer system log ?
recently I have faced a problem , my miners ( whatsminer M3 v2 ) after 5, 6 hours of working, stop minning ( first 5 or 6 out of 60 stop , then gradually all of them stop working except 3 or 4 ) - I thought maybe it is infected by virus but its not hashing at all I touched the miner body It is cold ( impossible for M3 to be cold while mining ).
ambient temp is ok , internet connection is ok , when I go to the administrator panel all parameters are empty , here is screen shot:
http://i68.tinypic.com/33a4hs2.jpg.
I use Whatsminer tool to install firmware again then it will be ok and work for another 5 ,6 hours. I believe there is a problem with my network but I don't really understand what is it ? I tried connecting my hub-switch directly to modem or separating half of miners to connect to another modem.
so i Checked system log codes I think here is the problem if u can approve it and come up with any solution ?
1. I think miner is trying to make a child connection but it cant ! what is child connection ?
2. those nicehash pool addresses I don't know where they come from at all (doesn't belong to me)!! ( Can it be virus ? to be sure to clean the virus if there is one , I turned off all miners except one ,install its firmware then turn off it then go to the next miner repeating process )
here is the codes.
Fri Jan 2 09:01:24 1970 authpriv.info dropbear[1831]: Child connection from 192.168.2.46:54642
Fri Jan 2 09:01:28 1970 authpriv.info dropbear[1846]: Child connection from 192.168.2.15:57652
Fri Jan 2 09:01:31 1970 authpriv.warn dropbear[1846]: Bad password attempt for 'root' from 192.168.2.15:57652
Fri Jan 2 09:01:31 1970 authpriv.warn dropbear[1831]: Bad password attempt for 'root' from 192.168.2.46:54642
Fri Jan 2 09:01:31 1970 authpriv.warn dropbear[1831]: Bad password attempt for 'root' from 192.168.2.46:54642
Fri Jan 2 09:01:31 1970 authpriv.warn dropbear[1846]: Bad password attempt for 'root' from 192.168.2.15:57652
Fri Jan 2 09:01:32 1970 authpriv.warn dropbear[1831]: Bad password attempt for 'root' from 192.168.2.46:54642
Fri Jan 2 09:01:32 1970 authpriv.warn dropbear[1846]: Bad password attempt for 'root' from 192.168.2.15:57652
Fri Jan 2 09:01:32 1970 authpriv.info dropbear[1831]: Exit before auth (user 'root', 3 fails): Disconnect received
Fri Jan 2 09:01:32 1970 authpriv.info dropbear[1846]: Exit before auth (user 'root', 3 fails): Disconnect received
Fri Jan 2 09:01:34 1970 authpriv.info dropbear[1875]: Child connection from 192.168.2.33:43308
Fri Jan 2 09:01:38 1970 authpriv.warn dropbear[1875]: Bad password attempt for 'root' from 192.168.2.33:43308
Fri Jan 2 09:01:38 1970 authpriv.warn dropbear[1875]: Bad password attempt for 'root' from 192.168.2.33:43308
Fri Jan 2 09:01:38 1970 authpriv.warn dropbear[1875]: Bad password attempt for 'root' from 192.168.2.33:43308
Fri Jan 2 09:01:39 1970 authpriv.info dropbear[1875]: Exit before auth (user 'root', 3 fails): Disconnect received
Fri Jan 2 09:01:43 1970 authpriv.info dropbear[1916]: Child connection from 192.168.2.22:41762
Fri Jan 2 09:01:44 1970 authpriv.info dropbear[1944]: Child connection from 192.168.2.34:44860
Fri Jan 2 09:01:47 1970 local0.err cgminer[1495]: No servers were found that could be used to get work from.
Fri Jan 2 09:01:47 1970 local0.err cgminer[1495]: Please check the details from the list below of the servers you have input
Fri Jan 2 09:01:47 1970 local0.err cgminer[1495]: Most likely you have input the wrong URL, forgotten to add a port, or have not set up workers
Fri Jan 2 09:01:47 1970 local0.warn cgminer[1495]: Pool: 0 URL: stratum+tcp://sha256.hk.nicehash.com:3334#xnsub User: 3CJgXokLQrRCQcEoftS7MbPDSXhXpX6P55 Password: x
Fri Jan 2 09:01:47 1970 local0.warn cgminer[1495]: Pool: 1 URL: stratum+tcp://sha256.hk.nicehash.com:3334#xnsub User: 3CJgXokLQrRCQcEoftS7MbPDSXhXpX6P55 Password: x
Fri Jan 2 09:01:47 1970 local0.warn cgminer[1495]: Pool: 2 URL: stratum+tcp://sha256.hk.nicehash.com:3334#xnsub User: 3CJgXokLQrRCQcEoftS7MbPDSXhXpX6P55 Password: x
Fri Jan 2 09:01:47 1970 local0.warn cgminer[1495]: Attempting to restart cgminer 4.9.2 git-6089112
Fri Jan 2 09:01:47 1970 kern.warn kernel: [ 81.135138] cgminer(pid 2194) in cgminer exiting:0
Fri Jan 2 09:01:47 1970 kern.warn kernel: [ 81.230103] cgminer(pid 2201) in cgminer exiting:256
Fri Jan 2 09:01:47 1970 kern.warn kernel: [ 81.358248] start-stop-daem(pid 2209) sending sig 15 to cgminer in cgminer
Fri Jan 2 09:01:47 1970 kern.warn kernel: [ 81.397305] cg@Completion(pid 2210) in cgminer exiting:0
Fri Jan 2 09:01:48 1970 local0.err cgminer[1495]: Shutdown signal received.
P.S : all my 60 miners used to work normally last 2 months with same firmware and network but i tried to add 2 more miners since then all this mess happened I have unplug those 2 miners but problem doesn't fix.