[chef] Re: query if the package already installed

[Vasiliy G Tolstov < >]

В Втр, 06/07/2010 в 09:55 -0700, Daniel DeLeo пишет:
> Ohai!
> What are you trying to accomplish here? Chef might already have an
> easier way to do what you want.
> 
> That said, the package providers all query for current installed
> status. The way it works is different for each provider. If you want
> to reuse this code, you can do that by creating a resource for the
> package you're interested in, setting the action to :nothing, creating
> a provider object for it, and then running
> Provider#load_current_resource. Something like this:
> 
> pkg = package("foo") do
>   action :nothing
> end
> 
> pkg_provider = Chef::Platform.provider_for_resource(pkg)
> pkg_provider.load_current_resource
> 
> You can then access pkg_provider.current_resource to see if the
> package is installed and which version, etc.
> 
> Again, if you tell us more about your use case, there might be a much
> easier way to get the result you want.
> 
> Daniel DeLeo

Thank You, Daniel. I'm try to use this. 
My use case - i need to autoscale apache, mysql, nginx for current
system (cpu and memory can be donamicly added or removed). Some recipes
contains this, but it only applies, when the packages installed, not if
the package already installed in the system...


-- 
Vasiliy G Tolstov 
<
 >
Selfip.Ru