[Xymon] Strange issue when using local scripts (in linux)

[David Boyer]

Jeremy,
           You read my mind!  But, it didn't seem to help... :(

[davieb at xymonsvr ~]$ ~xymon/client/local/dateinfo
dhcp-common,4.3.6,18 Jul 2020,en_US.UTF-8

[davieb at xymonsvr ~]$ ~xymon/server/bin/xymon localhost "clientlog xymonsvr
section=local:dateinfo"
[local:dateinfo]
dhcp-common,4.3.6,Jul 18 17:44:26,en_US.UTF-8

[davieb at xymonsvr ~]$ cat ~xymon/client/local/dateinfo
#!/bin/sh

OS=`uname -s`
RPM=dhcp-common
LANG=en_US.UTF-8;export LANG

if [ ${OS} = "Linux" ]; then
   VERSION=`rpm -q ${RPM} --qf "%{VERSION}\n"`
   INSTALLED=`rpm -q ${RPM} --qf "%{INSTALLTIME:date}\n"|awk {'print $2"
"$3" "$4'}`
fi

echo "${RPM},${VERSION},${INSTALLED},${LANG}"

Good thing I'm grey already... This is the kinda stuff that would turn me
grey!

Dave


On Mon, Aug 3, 2020 at 9:21 PM Jeremy Laidman <jeremy at laidman.org> wrote:

> Great to see that the problem has been identified.
>
> I would recommend forcing LANG in your script to a known value, because
> that's the code that makes an assumption about the output of rpm.
>
> J
>
> On Tue, 4 Aug 2020 at 10:56, David Boyer <davieb at gmail.com> wrote:
>
>> Jeremy,
>>        If you notice, both iterations are being run from the xymonsvr.
>> I've added the LANG to see if the
>> two report it differently.
>>
>> So, by hand it looks:
>>
>> [davieb at xymonsvr ~]$ ~xymon/client/local/dateinfo
>> dhcp-common,4.3.6,18 Jul 2020,en_US.UTF-8
>>
>> Pulling the info out of xymon looks:
>>
>> [davieb at xymonsvr ~]$ ~xymon/server/bin/xymon localhost "clientlog
>> xymonsvr section=local:dateinfo"
>> [local:dateinfo]
>> dhcp-common,4.3.6,Jul 18 17:44:26,*C*
>>
>> Humm, there does appear to be a difference!  Checking the xymon user
>> itself, it UTF-8.
>> [xymon at xymonsvr ~]$ echo $LANG
>> en_US.UTF-8
>>
>>
>> That appears to be the issue though, I set the LANG=C and ran the script
>> by hand and get the same results when I pull it from xymon!
>> [davieb at xymonsvr ~]$ LANG=C;export LANG
>> [davieb at xymonsvr ~]$ ~xymon/client/local/dateinfo
>> dhcp-common,4.3.6,Jul 18 17:44:26,C
>>
>> Looking at the xymon.sh start script, it does not appear to set it
>> anywhere!  Guess I'll need to run that
>> to ground in the morning.
>>
>> Thanks for pointing me in the right direction!
>>
>> Dave
>>
>> On Mon, Aug 3, 2020 at 8:11 PM Jeremy Laidman <jeremy at laidman.org> wrote:
>>
>>> David
>>>
>>> Update your script to, display the value of the LANG variable in
>>> addition to the RPM details (perhaps on a separate line), and see if the
>>> value differs between the script output (run from your shell) and the
>>> clientlog.
>>>
>>> I suspect LANG is set in your shell differently from how it's set in the
>>> xymon user's shell. RPM (or probably glibc) uses LANG to format the date
>>> according to the environment's locale. I'm guessing your shell has LANG set
>>> to something like en_US, whereas the xymon user's LANG is set to something
>>> like C, or is not set at all.
>>>
>>> Cheers
>>> Jeremy
>>>
>>> On Tue, 4 Aug 2020 at 08:32, David Boyer <davieb at gmail.com> wrote:
>>>
>>>> Hi,
>>>>     I've got a strange date issue.  I've written some local scripts to
>>>> pad information onto the combo message. Here is the background:
>>>>
>>>> 1. When you run the script by hand locally (take note of the date):
>>>>
>>>> [davieb at xymonsvr ~]$ ~xymon/client/local/dateinfo
>>>> dhcp-common,4.3.6,18 Jul 2020
>>>>
>>>> 2. When I pull the information from xymon server:
>>>>
>>>> [davieb at xymonsvr ~]$ ~xymon/server/bin/xymon localhost "clientlog
>>>> xymonsvr section=local:dateinfo"
>>>> [local:dateinfo]
>>>> dhcp-common,4.3.6,Jul 18 17:44:26
>>>>
>>>>
>>>> Notice how the date field gets modified?  I can't figure out why. The
>>>> only thing I can think of is something within the xymon code, but I don't
>>>> know why it would?
>>>>
>>>> Here's the simple script:
>>>>
>>>> [davieb at xymonsvr ~]$ cat ~xymon/client/local/dateinfo
>>>> #!/bin/sh
>>>>
>>>> OS=`uname -s`
>>>> RPM=dhcp-common
>>>>
>>>> if [ ${OS} = "Linux" ]; then
>>>>    VERSION=`rpm -q ${RPM} --qf "%{VERSION}\n"`
>>>>    INSTALLED=`rpm -q ${RPM} --qf "%{INSTALLTIME:date}\n"|awk {'print
>>>> $2" "$3" "$4'}`
>>>> fi
>>>>
>>>> echo "${RPM},${VERSION},${INSTALLED}"
>>>>
>>>> Does anybody have any idea what is going on?
>>>>
>>>> Thanks,
>>>> Dave
>>>> _______________________________________________
>>>> Xymon mailing list
>>>> Xymon at xymon.com
>>>> http://lists.xymon.com/mailman/listinfo/xymon
>>>>
>>>
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