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

[Dirk Koopman]

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;
>         /spider/perl/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> -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
>         <r.gibson2 at sympatico.ca <mailto: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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