[Xymon] File monitoring with `date` in filename

[Rolf Schrittenlocher]

Hi Mark,

thanks, but this doesn't work either. I assume the problem is that the 
backticks are evaluated, but the "$(date)" isn't as that is done by sh 
and sh doesn't know $(variable). So what we need is some thing like  one 
backtick expansion after the other. or a way to let ksh do the job. But 
I don't know if there is way to achieve that.

The workaround is ok for the moment. If the log is missing it wouldn't 
be very serious as we are checking for MTIME<600 (last access more then 
10 minutes ago). So xymon will get red in case todays file is missing as 
it is older than that,
kind regards
Rolf
>
> Wonder if you need to preface the operation with an eval to get the 
> date command to operate first -- don't know if this will work with Xymon.
>
> FILE `eval find /home/mypath/log/update_out_$(date +%Y%m%d).txt` MTIME<red
>
> The other thing I would be a little leery of, is having any expression 
> calculation in the filepath variable in the find command -- some older 
> Unix flavors may get upset over this syntax. Calculations/regex tend 
> to be better supported with the --name attribute. Ditto with presumed 
> output versus need to use "-print " in older find commands. If you 
> don't need to support older Unix flavors, then ignore all of this.
>
> FILE `eval find /home/mypath/log --name "update_out_$(date 
> +%Y%m%d).txt" --print` MTIME<red
>
> Above would need more work though as by itself it will keep hunting 
> down the log directory tree for possibly other files.
>
> The thing I don't particular care for with `ls --tr 
> /home/mypath/log/update_put_*.txt| tail -1` is what happens if the 
> current day's file is missing? Then you are parsing yesterday's or the 
> last log file. No complaints if the wrong file is being operated on. 
>  Would ~assume you want some kind of alert if the today's log file is 
> missing....
>
> *From:*Xymon [mailto:xymon-bounces at xymon.com] *On Behalf Of *Rolf 
> Schrittenlocher
> *Sent:* Thursday, September 26, 2013 7:44 AM
> *To:* deepak deore
> *Cc:* xymon
> *Subject:* Re: [Xymon] File monitoring with `date` in filename
>
> Thanks Deepak,
>
> unfortunately that won't help as I need the file with the present date 
> in its name.  I did now:
> `ls -tr /home/mypath/log/update_out_*.txt|tail -1`
> This workaround helped. But I'm still curious if there is a solution 
> for first expanding the date and second the whole expression
> `find /home/mypath/log/update_out_$(date +%Y%m%d).txt` (sorry, I 
> dropped the find in my first posting)
>
> kind regards
> Rolf
>
>
> Looks like your analysis.cfg entry is wrong.Try this.
>
> FILE    /home/mypath/log/update_out_[0-9]*-[0-9]*-[0-9]*\.txt 
> MTIME<600 red
>
> On Thu, Sep 26, 2013 at 1:04 PM, Rolf Schrittenlocher 
> <schritte at ub.uni-frankfurt.de <mailto:schritte at ub.uni-frankfurt.de>> 
> wrote:
>
> Dear xymon users,
>
> I got stuck while trying to monitor a file which should be updated 
> regularly and which has got a timestamp in its name.
> "files" on the server remains clear, no data . Could someone tell me 
> what is wrong with these settings or what have i forgotten?
>
> On the server we have in
> analysis.cfg
> HOST=myserver
>  FILE    `/home/mypath/log/update_out_$(date +%Y%m%d).txt` MTIME<600 red
>
> in client-local.cfg:
> [myserver]
>   file:`find /mypath/log/update_out_$(date +%Y%m%d).txt`
>
>
> I see an entry for this file on the client
> in tmp logfetch.myserver.cfg
>   file:`find /mypath/log/update_out_$(date +%Y%m%d).txt`
>
> but there is nothing for this file in msg.myserver.txt
>
> File exists and is readable:
>   find /home/mypath/log/update_out_$(date +%Y%m%d).txt -exec ls -l {} \;
>   -rw-rw-r--   1 ...      2467070 Sep 26 08:43 
> /home/mypath/log/update_out_20130926.txt
>
> In xymonclient.log I see an entry
> sh: syntax error at line 1: `(' unexpected
> but I don't know if it is related to the file problem or to anything else.
> I know that sh can't deal with $(xy), I tried as well
> FILE    /home/mypath/log/update_out_`date +%Y%m%d`.txt MTIME<600 red
> but in vain.
>
> Any help appreciated,
> kind regards
> Rolf
>
>
> -- 
> Mit freundlichen Gruessen
> Rolf Schrittenlocher
>
> Lokales Bibliothekssystem Frankfurt
> Senckenberganlage 31, 60054 Frankfurt
> Tel: (49) 69 - 798 28908   Fax: (49) 69 798 28817
> LBS: lbs-f at mlist.uni-frankfurt.de <mailto:lbs-f at mlist.uni-frankfurt.de>
> Persoenlich: schritte at ub.uni-frankfurt.de 
> <mailto:schritte at ub.uni-frankfurt.de>
>
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>
>
>
> -- 
> Mit freundlichen Gruessen
> Rolf Schrittenlocher
>   
> Lokales Bibliothekssystem Frankfurt
> Senckenberganlage 31, 60054 Frankfurt
> Tel: (49) 69 - 798 28908   Fax: (49) 69 798 28817
> LBS:lbs-f at mlist.uni-frankfurt.de  <mailto:lbs-f at mlist.uni-frankfurt.de>
> Persoenlich:schritte at ub.uni-frankfurt.de  <mailto:schritte at ub.uni-frankfurt.de>  


-- 
Mit freundlichen Gruessen
Rolf Schrittenlocher

Lokales Bibliothekssystem Frankfurt
Senckenberganlage 31, 60054 Frankfurt
Tel: (49) 69 - 798 28908   Fax: (49) 69 798 28817
LBS: lbs-f at mlist.uni-frankfurt.de
Persoenlich: schritte at ub.uni-frankfurt.de

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