On Monday, April 15, 2013 9:14:21 AM UTC-5, Gary Park wrote: > > Hello, > > I am in the process of "trying out" Puppet, and so far, it is going really > well, and I can see a clear line of how we can use it internally. > > I do have one question though with regard to the using the onlyif > parameter of the exec command (as per here > http://docs.puppetlabs.com/references/latest/type.html#exec). > > Ideally, what I would like to do is to only run a PowerShell exec command, > if a web page doesn't currently exist on the server (i.e. the PowerShell > script is responsible for deploying the Web Pages (into SharePoint in this > case) and I only want to run this step, if these pages don't already exist. > To that end, I have done something like this: > > onlyif => '$webRequest = [System.Net.WebRequest]::Create(" > http://some-url.test.aspx";); $webRequest.UseDefaultCredentials = $true; > try { if([int]$webRequest.GetResponse().StatusCode -eq "200") { exit 0; } > else { exit 1; } } catch [System.Net.WebException] { exit 1; }' > > Which, at the command line, has the correct result. However, when I try > to run this, I get an error saying that $webRequest is not recognised. >
Puppet invokes the specified command directly, not via the [standard | Power] shell, so whether that works at the (some) command line is irrelevant. > > Which leads me to think that using variables within the onlyif is not > supported. Is that correct? If so, what is the best approach for doing > this, or am I going up the wrong path? > > No, that's not correct. I suppose you expect '$webRequest' to be meaningful to (and the whole command sequence to be executed by) PowerShell, but you haven't told Puppet to run it via PowerShell. Instead, you've told Puppet to execute a command named literally '$webRequest'. Refer to the docs on the Exec type's "windows" provider for information and examples of how to make this sort of thing work: docs.puppetlabs.com/references/3.1.latest/type.html#exec . What they say about the 'command' parameter applies equally to 'onlyif'. John -- You received this message because you are subscribed to the Google Groups "Puppet Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/puppet-users?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
