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

[Michael Carper, Ph.D.]

So it would look like this?

10 2 * * 1,3,5 spawn("rm /tmp/usdbraw.gz &")

On Tue, Mar 22, 2016 at 5:48 PM, Dirk Koopman <djk at tobit.co.uk> 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>
> 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> 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>")
>>> 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>
>>> 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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>>>>
>>>
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