Create a template within a ruby block

gistfile1.txt

ruby_block "create ssh key" do
  block do 
    k = SSHKey.generate(:type => 'RSA', :bits => 1024, :comment => "Postgres Master")
    node.set[:postgresql][:pubkey] = k.ssh_public_key
    node.save

    # Much of the DSL disappears in ruby blocks.  Here's how to create a template.
    rc = Chef::RunContext.new(node, node.cookbook_collection)
    t = Chef::Resource::Template.new "/var/lib/postgresql/.ssh/id_rsa"
    t.source("id_rsa.erb")
    t.owner("postgres")
    t.group("postgres")
    t.cookbook("postgresql")
    t.mode("0600")
    t.variables(
        :k => k.private_key
      )
    t.action(:create_if_missing)
    t.run_context=(rc)
    t.run_action("create")
  end
  not_if { File.exists?("/var/lib/postgresql/.ssh/id_rsa") }
end

@mansona in my example, I instantiate the Resource instead of the Provider:

Chef::Resource::RemoteFile

This should not be used, it is not safe and breaks the Chef API.

@coderanger what should not be used exactly? Chef::Resource::RemoteFile? Or Chef::Resource::Template.new inside block? Pls be specific.

At the same time. If you are hinting not to use this approach. Please suggest an alternative

Simply stating This should not be used, it is not safe and breaks the Chef API. is good information. But it doesn't really help the OP and future observers