[Dxspider-support] Spider continues to freeze and/or restart on its own

[Kjell Jarl]

Hi,
Is there a similar way to let the connects go to the background, that 
else has to time out for a non-responsive node?
73
Kjell


On 2016-03-22 23:48, Dirk Koopman wrote:
> Ah, that explains why I have not been able to reproduce this. I don't
> spawn (potentially) long running jobs in this way. And anyway, my main
> production and test nodes are on high bandwidth sites.
>
> What you could try is to add a '&' character before the ") of each spawn
> command. That will start a new process in background and  the spawn
> should return straight away.
>
> Dirk
>
> On 22/03/16 22:25, Michael Carper, Ph.D. wrote:
>> Good point, actually.
>>
>> More often than not, it freezes up for a period of time... the users
>> all get disconnected... and after the system is no longer frozen, the
>> node shows no change in uptime.
>>
>> In about 10 percent of cases, the system freezes... users get
>> disconnected... and when the system is back, it shows that it was just
>> restarted (though the server itself was not restarted; which is what
>> my original image showed).
>>
>> During the time when the node is frozen, I'm also unable to login to
>> the Linux server itself.
>>
>> So what I could do is remark-out some of these things and try to see
>> if the problem goes away.  (I stuck MAILTO statements in there and
>> they didn't generate emails).
>>
>> Mike, WA9PIE
>>
>> On Tue, Mar 22, 2016 at 6:02 AM, Mike McCarthy, W1NR <lists at w1nr.net
>> <mailto:lists at w1nr.net>> wrote:
>>
>>     There is an issue with the Perl libraries that will cause a hang
>>     of about 2 minutes or more if you have a crontask that is trying
>>     to connect to a node that is not responding. It usually times out
>>     and continues but some users will time out their connections and
>>     reconnect. I have not seen this issue cause a restart.
>>
>>     Mike, W1NR
>>
>>     On 03/22/2016 12:48 AM, Michael Carper, Ph.D. wrote:
>>
>>         Yes.  The following spawn commands are in my crontab. Other
>>         folks say
>>         they're using these same commands without problem:
>>
>>         # AutoUpdate DXSpider Server
>>         0 1 * * * spawn("cd /spider; git reset --hard; git pull")
>>
>>         # AutoUpdate USDB
>>         0 2 * * 1,3,5 spawn("cd /tmp; wget -qN
>>         <ftp://ftp.w1nr.net/usdbraw.gz>ftp://ftp.w1nr.net/usdbraw.gz;
>>         /spider/perl/create_usdb.pl <http://create_usdb.pl>
>>         <<http://create_usdb.pl>http://create_usdb.pl> usdbraw.gz")
>>         5 2 * * 1,3,5 run_cmd("load/usdb")
>>         10 2 * * 1,3,5 spawn("rm /tmp/usdbraw.gz")
>>
>>         # AutoUpdate Keps
>>         0 2 * * 2,4,6 spawn("cd /tmp; wget -qN
>>         http://www.amsat.org/amsat/ftp/keps/current/nasabare.txt;
>>         /spider/perl/convkeps.pl <http://convkeps.pl>
>>         <<http://convkeps.pl>http://convkeps.pl> -p nasabare.txt")
>>         5 2 * * 2,4,6 run_cmd("load/keps")
>>         10 2 * * 2,4,6 spawn("rm /tmp/nasabare.txt")
>>
>>         # AutoUpdate CTY.DAT
>>         0 3 * * 0,2,5 spawn("cd /spider/data; wget -qN
>>         http://www.country-files.com/cty/cty.dat")
>>         0 3 * * 0,2,5 spawn("cd /spider/data; wget -qN
>>         http://www.country-files.com/cty/wpxloc.dat")
>>         0 3 * * 0,2,5 spawn("cd /spider/data; wget -qN
>>         http://www.country-files.com/cty/wpxloc.raw")
>>         2 3 * * 0,2,5 spawn("cd /spider/data;
>>         /spider/perl/create_prefix.pl <http://create_prefix.pl>
>>         <http://create_prefix.pl>")
>>         3 3 * * 0,2,5 run_cmd("load/prefix")
>>
>>         On Mon, Mar 21, 2016 at 7:02 AM, Ron Gibson
>>         <<mailto:r.gibson2 at sympatico.ca>r.gibson2 at sympatico.ca
>>         <mailto:r.gibson2 at sympatico.ca
>>         <mailto:r.gibson2 at sympatico.ca>>> wrote:
>>
>>             Hi Mike,
>>             By any chance do you have any entries in your Spider
>>         crontab with
>>             'spawn'?
>>             Ron
>>             VE3CGR
>>
>>             On 3/20/2016 8:01 PM, Michael G. Carper wrote:
>>
>>
>>                 Attached image shows the DX Spider console… and the
>>             server’s
>>                 telnet console.  I sure wish I could figure out why
>>             Spider freezes
>>                 and/or restarts randomly.____
>>
>>                 __ __
>>
>>                 Mike, WA9PIE____
>>
>>
>>
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