[chef] Re: Help - Creating a "First Run Only" Resource

[Adam Jacob < >]

It should look like this. Let's say you have a cookbook called "partition" 
and a recipe called "default.rb". 

# partition/attributes/default.rb
node.default[:partitioned] = false

# partition/recipes/default.rb

if node[:partitioned] == false
  … put all your recipe stuff that you want to run one time right here …

  node.normal[:partitioned] = true
  node.save
end

That will ensure that, if there has been no error in partitioning, you won't 
ever try again.

Adam

---
Opscode, Inc.
Adam Jacob, Chief Product Officer
T: (206) 619-7151 E: 

 

On Nov 7, 2011, at 12:15 PM, Van Fossan,Randy wrote:

> I was thinking that parts of this code needed to be a resource provider
> under cookbookname/provider..
> 
> -----Original Message-----
> From: Maxim Kulkin 
> [mailto:
 
>  
> Sent: Monday, November 07, 2011 3:12 PM
> To: 
> 
 
> Subject: [chef] Re: Help - Creating a "First Run Only" Resource
> 
> What do you mean by "resource" ? You can just put this text into your
> recipe and that's it.
> 
> On Nov 7, 2011, at 23:44, Van Fossan,Randy wrote:
> 
>> In the examples, are they to go into a resource or a recipe?  I just 
>> don't have enough to build on..
>> 
>> Example from Chef Wiki------
>> execute "some_command" do
>> command "command to run once"
>> notifies :create, "ruby_block[some_command_run_flag]", :immediately 
>> not_if { node.attribute?("some_command_complete") } end
>> 
>> ruby_block "some_command_run_flag" do
>> block do
>> node.set['some_command_complete'] = true node.save end action :nothing
> 
>> end
>> ---------------
>> 
>> 
>> -----Original Message-----
>> From: Maxim Kulkin 
>> [mailto:
 
>> Sent: Monday, November 07, 2011 2:37 PM
>> To: 
>> 
 
>> Subject: [chef] Re: Help - Creating a "First Run Only" Resource
>> 
>> What exactly you do not understand ? First boot recipe uses attribute 
>> on node to signal if it was already executed on that node.
>> 
>> On Nov 7, 2011, at 21:47, Van Fossan,Randy wrote:
>> 
>>> I am still learning to write cookbooks and need to Create a "First 
>>> Run
>> Only" Resource.   I am looking at the Wiki Creating a "First Run Only"
>> Resource
>>> (http://wiki.opscode.com/pages/viewpage.action?pageId=15728818) and 
>>> am
>> having some difficulties interpreting the example.  Does anyone have a
> 
>> cookbook with a complete example?
>>> 
>>> Basically, I have a recipe (config_disk.rb) that needs to do the
>> following only once.
>>> 
>>> ------Begin snippet ---
>>> bash "Configure_Disk" do
>>> user "root"
>>> cwd "/tmp"
>>> code <<-EOH
>>> #### Partition sda (Name and Data node) /sbin/fdisk /dev/sda << EOF n
> 
>>> p
>>> 
>>> 
>>> w
>>> EOF
>>> /sbin/partprobe /dev/sda
>>> #######Partition sdb (Name and Data node) /sbin/fdisk /dev/sdb << EOF
> 
>>> n p
>>> 1
>>> 
>>> 
>>> w
>>> EOF
>>> EOH
>>> end
>>> ----End of snippet-----
>>> 
>>> Thanks
>>> Randy
>>> OCLC Inc.
>> 
>> 
>> 
> 
> 
>