Chef-Client wait until successful ssh connection ruby block

[aravind]

@Tensibai

Then your recipe is not idempotent (not testing if there's something to do) and thus should be improved.

You are absolutely right.

I think I am realizing that when I need to check something before I DO something within Chef, I run into having to know a bit of Ruby syntax. Trying to learn that now.

For example, BEFORE I tell Chef to run a execute block, I know that I can use the guard not_if to check for something.
e.g.

execute "unzip #{folder}/installer.zip -d #{node[:app][:installer_dir]}" do
  user node[:app][:user]
  group node[:app][:group]
  not_if { File.exists?("#{node[:app][:installer_dir]}/app") }
end

What I need to figure out is some examples and "possible options that I can use" for the not_if section.

For example, if I can run a bash command and grep for a particular exit code or output AS PART OF the not_if block, I can then determine if the cert already exists and if so, not execute the "import cert" execute block and that way make the "import cert" execute block idempotent.

Regards
Aravind