Thanks Rob. I will try both approaches; for me there is more appeal in
simply using a shell script.
Peter, can I generate multiple key=value pairs inside the same shell
script? I don't explicitly have to do it the way you presented with
key="key_name"
value="evaluated_expression"
echo "${key}=${value}" Do I?
Can I simple skip the key="key_name" part and just do the
expression_evaluation assigned to a variable and then echo them together?
Perhaps I can write shell functions and execute them all?
--------------------------
Warron French
On Wed, Mar 22, 2017 at 7:35 PM, Rob Nelson <[email protected]> wrote:
> That's probably one of the best ways to do this. But...
>
> You CAN use double quotes around a string. You will need to escape
> characters that will otherwise be interpolated like double quotes and
> dollar signs. I'm going off memory but I think `"awk '{print \$1_\$2}'"`
> should interpolate to `awk '{print $1_$2}'` properly. This is often tedious
> and may require some trial and error to ensure both the double quotes and
> the system call that uses it don't interpolate too much but it can work.
>
> On Wed, Mar 22, 2017 at 7:07 PM Peter Bukowinski <[email protected]> wrote:
>
>> Hi Warron,
>>
>> I'd consider using an external, executable fact to avoid ruby altogether.
>>
>> https://docs.puppet.com/facter/3.6/custom_facts.html#
>> executable-facts-----unix
>>
>> Basically, you can write a bash script (or use any language you want),
>> drop it into '<MODULEPATH>/<MODULE>/facts.d/' on your puppet server,
>> and it will be synced to all your nodes (assuming you use pluginsync).
>>
>> The only requirement for executable fact scripts is that they must
>> return key/value pairs in the format 'key=value'. Multiple keys/values
>> get their own line. In your case, you could do something like this:
>>
>> -----
>> #!/bin/bash
>>
>> key="qty_monitors_total"
>> value=$(your parsing command for /var/log/Xorg.0.log here)
>>
>> echo "${key}=${value}"
>> -----
>>
>> Save the file as an executable script in the above mentioned path and
>> it should be available on the next puppet run.
>>
>> On Wed, Mar 22, 2017 at 3:24 PM, warron.french <[email protected]>
>> wrote:
>> > Hello, I have finally learned how to write a Custom Fact; and
>> duplicated the
>> > syntax several times over inside the same .rb file.
>> >
>> > I am using syntax that looks like the following:
>> >
>> > Facter.add('qty_monitors_total') do
>> > setcode do
>> > Facter::Util::Resolution.exec('/bin/grep " connected"
>> > /var/log/Xorg.0.log | cut -d\) -f2,3,4 | grep GPU |sort -u | wc -l')
>> > end
>> > end
>> >
>> > I don't know of any other way to do this yet; but that's not my concern
>> yet.
>> >
>> > What I would like to know is how can I use an awk command within the
>> > Facter::Util::Resolution.exec('.........') line.
>> >
>> > I have a need to essentially reproduce the line above but drop wc -l
>> and
>> > add awk '{ print $2"_"$3"_on_"$1$4 }'
>> >
>> > I need the awk command to pretty much look like this; the problem is awk
>> > uses its own single quotes (') and it will break the ruby code.
>> >
>> > I am not a ruby developer; so if someone could either tell me:
>> >
>> > It's just not possible; or
>> > do it this way
>> >
>> >
>> > That would be greatly appreciated. Thank you,
>> >
>> > --------------------------
>> > Warron French
>> >
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> --
> Rob Nelson
>
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