On Friday, September 5, 2014 1:37:21 PM UTC-5, Colin Kincaid Williams wrote:
>
> I'm going to try your suggestion. Thanks for the response! I'm curious
> however if $rm_hosts is available where you suggest.
>
I made no suggestion about where $rm_hosts is available in your code. You
were proposing to use it in some scope where apparently you were confident
it was available, and I gave you a way you could use it in that scope to
achieve what you appeared to be trying to do. I relied on your evaluation
of its availability.
Inasmuch as you raise the question, however, you should note that resource
declarations do not establish scopes, and moreover that parameter bindings
in resource declarations do not add *anything* to the scope in which the
declaration appears. The parameter bindings in a given parameter list are
not available elsewhere in that list nor in the surrounding scope -- they
are available only in the body of the declared resource.
> E.G.
>
> class role::wh::hadoop::production {
> $is_rm = $::hostname in $rm_hosts
>
>
> When the relevant lines from the provided hadoop.pp pasted above :
>
> class role::wh::hadoop::production {
>
> class { 'cdh5::hadoop':
> namenode_hosts => [
> 'us3sm2nn010r07.comp.prod.local',
> 'us3sm2nn011r08.comp.prod.local',
> ],
> rm_hosts => [
>
> 'us3sm2nn010r07.comp.prod.local',
>
> 'us3sm2nn011r08.comp.prod.local',
> ],
>
>
>
You would probably want to pull the value being bound to class parameter
cdh5::hadoop::rm_hosts out to a local variable in the role class:
$rm_hosts = [
'us3sm2nn010r07.comp.prod.local',
'us3sm2nn011r08.comp.prod.local',
]
$is_rm = $::hostname in $rm_hosts
class { 'cdh5::hadoop':
# ...
rm_hosts => $rm_hosts,
# ...
}
John
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