[chef] Re: How to target different servers/client-keys using knife?

[Alex Soto < >]

Sure, the idea is a knife.rb that evaluates a corresponding knife-config.BRANCHNAME.rb to override the config based on the git branch you are on.  Great example of the design win of having ruby as the config language.  You could DRY this up a bit, but this is version 1.  Looking forward to any 'patches'.

Alex

.chef/knife.rb

# Default to 'QA' environment

validation_client_name   'channels-qa-validator'

validation_key           './.chef/channels-qa-validator.pem'

chef_server_url          'https://api.opscode.com/organizations/channels-qa'  

cache_options( :path => './.chef/channels-qa-checksums' )

log_level                :debug

log_location             STDOUT

node_name                'apsoto'

client_key               '/Users/asoto/.chef/apsoto.pem'

cache_type               'BasicFile'

cookbook_path           './cookbooks','./site-cookbooks'

# Read in any environment specific config

branch_cmd = %q{git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'}

branch = `#{branch_cmd}`.strip

environment_config = File.join(File.dirname(__FILE__), "knife-config.#{branch}.rb")

if File.exists?(environment_config)

  eval(IO.read(environment_config))

  Chef::Log.info("Loaded environment specific configuration from #{environment_config}")

else

  Chef::Log.info("No environment specific config file found for branch #{branch}")

end

.chef/knife-config.master.rb

log_level                :info

log_location             STDOUT

validation_client_name   'channels-qa-validator'

validation_key           './.chef/channels-qa-validator.pem'

chef_server_url          'https://api.opscode.com/organizations/channels-qa'  

cache_options( :path => './.chef/channels-qa-checksums' )

.chef/knife-config.staging.rb

log_level                :debug

log_location             STDOUT

validation_client_name   'channels-staging-validator'

validation_key           './.chef/channels-staging-validator.pem'

chef_server_url          'https://api.opscode.com/organizations/channels-staging'  

cache_options( :path => './.chef/channels-staging-checksums' )

On Oct 19, 2010, at 3:34 PM, Mike Williams wrote:

On 20/10/2010, at 06:20 , Alex Soto wrote:

...

I also have my knife config determine what branch I'm on and configure the knife client to communicate with the corresponding server, setup correct keys, etc.

That sounds interesting.  How do you do that?  Have you got any code you can share?

--
cheers,
Mike Williams