[chef] Re: RE: Re: RE: Re: custom json attributes to powershell variables

[Greg Zapp < >]

Ohai collects system information and stores it into the node mash(node['whatever']) when Chef starts. When a Chef run completes it does a node.save which stores all the node information in Chef server.

I believe in this case you would want to reload Ohai to ensure that by the end of the first run the new IP is saved out.  If you search for "Reload Ohai" here you will see an example: http://docs.opscode.com/ohai.html .  I would recommend using a "notifies" like in the examples.

If this recipe is used on every subsequent Chef run it may be worth looking into preventing the powershell script and notification from running when it doesn't need to.

-Greg

On Thu, Jun 5, 2014 at 11:31 PM, Simon Hawkins < " target="_blank"> > wrote:

Cool that works. J

 

Silly question but after this has run, is there an automated way to update the node information “knife node edit node2 –a” so it has the new IP info?

 

Does something like Ohai send the info back automatically and update the config?

 

Cheers,

Simon.

 

From: Greg Zapp [mailto: " target="_blank"> ]
Sent: 05 June 2014 12:17
To: " target="_blank">
Subject: [chef] Re: RE: Re: custom json attributes to powershell variables

 

Hi Simon,

 

Sorry about that! :|  "ip_address" is a string(at least I'm not sure if you can look it up with a symbol) and should to be in quotes: #{node['ip_address']}

 

 

-Greg

 

On Thu, Jun 5, 2014 at 10:29 PM, Simon Hawkins < " target="_blank"> > wrote:

Hi Greg,

 

I get the following output:

 

10.x.x.x [2014-06-05T11:24:50+01:00] ERROR: Running exception handlers

10.x.x.x [2014-06-05T11:24:50+01:00] ERROR: Exception handlers complete

10.x.x.x [2014-06-05T11:24:50+01:00] FATAL: Stacktrace dumped to c:/chef/cache/chef-stacktrace.out

10.x.x.x [2014-06-05T11:24:50+01:00] FATAL: NoMethodError: undefined method `ip_address' for Chef::Resource::PowershellScript

 

New-NetIPAddress –InterfaceAlias "Local Area Connection" –IPv4Address #{node[ip_address]}

 

Does it have to be in quotes? “#{node[ip_address]}”

 

Cheers,

Simon.

 

From: Greg Zapp [mailto: " target="_blank"> ]
Sent: 04 June 2014 14:59
To: " target="_blank">
Subject: [chef] Re: custom json attributes to powershell variables

 

Hi Simon,

 

I have updated that gist to show two examples.  The second block there will run the action immediately.  You might need that if the rest of your Chef run requires the IP address being changed to what you've passed in.

 

-Greg

 

On Thu, Jun 5, 2014 at 1:44 AM, Greg Zapp < " target="_blank"> > wrote:

Hi Simon,

 

-j would be correct but it takes a JSON string: '{ "ip_address" : "10.x.x.x", "prefix" : 24, "gateway" : "10.x.x.x" }'

 

After that, assuming you have knife bootstrap working with Windows, you should be able to use string interpolation inside a HEREDOC to craft your powershell command/script with the attributes: https://gist.github.com/ProTip/a2301025cfc4d8b9500f

 

Cheers,

   -Greg

 

On Thu, Jun 5, 2014 at 1:20 AM, Greg Zapp < " target="_blank"> > wrote:

Hi Simon,

 

Is your difficulty with getting the attributes into Chef or using them once they are there?

 

-Greg

 

On Wed, Jun 4, 2014 at 9:36 PM, < " target="_blank"> > wrote:

Hi,

Do you know how I would be able to save JSON custom attributes to a powershell
variable in a recipe?

When I bootstrap a Windows machine I would like to pass the IP, Subnet, GW and
DNS Servers into custom attributes and when the recipe is applied, the windows
machine sets the correct information to the network card (using powershell).

Since knife vsphere doesn't currently support vmware windows customisations I
can't think of another way.

So I would end up with something like this in the recipe (which is a powershell
script):

$ipAddress = customIPAttribute
$gateway = customGWAttribute
etc, within the recipe.

Cheers,
Simon.

 

 

 

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