Databases
StackOverflow2013
Postsdbo
POChef Recipes - Setting node attributes in ruby_block
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POChef Recipes - Setting node attributes in ruby_block
    primarykey
    data
    text
    <p>I have a Chef recipe for a multi-node web service, each node of which needs to get the hostname and IP of the other nodes, to put it into its own local configuration.</p> <p>The code is shown below. The problem is that when the node.set[][] assignments are made in the ruby_block as shown, the values are empty when the template that relies upon them is created. If I want to create that template, I have to move all of the ruby_block code outside, and have it "loose" in the recipe. Which makes it harder to do unit-testing with Chefspec and the like.</p> <p>Can any Chef guru set me straight? Is it just impossible to do node.set[] like this inside of a ruby_block? And if so, why doesn't it say so in the <a href="http://docs.opscode.com/resource_ruby_block.html" rel="noreferrer">docs?</a></p> <pre><code>$cm = { :name =&gt; "web", :hostname =&gt; "" , :ip_addr =&gt; "" } $ca = { :name =&gt; "data", :hostname =&gt; "" , :ip_addr =&gt; "" } $cg = { :name =&gt; "gateway", :hostname =&gt; "" , :ip_addr =&gt; "" } $component_list = [$cm, $ca, $cg] ruby_block "get host addresses" do block do for cmpnt in $component_list # do REST calls to external service to get cmpnt.hostname, ip_addr # ....... node.set[cmpnt.name]['name'] = cmpnt.name node.set[cmpnt.name]['host'] = cmpnt.hostname node.set[cmpnt.name]['ip'] = cmpnt.ip_addr end end end template "/etc/app/configuration/config.xml" do source "config.xml.erb" variables( :dataHost =&gt; node['data']['host'], :webHost =&gt; node['web']['host'], :gatewayHost =&gt; node['gateway']['host'] ) action :create end </code></pre> <p>I also added </p> <pre><code> subscribes :create, "ruby_block[get host addresses]", :immediately </code></pre> <p>to the template definition to ensure that the ruby_block ran before the template was created. This didn't make a difference.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USdanzvash
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POChef Recipes - Setting node attributes in ruby_block
      1. USLeslie Hensley
      1. VTFavorite
    2. VO
      singulars
      1. POChef Recipes - Setting node attributes in ruby_block
      1. USdo3cc
      1. VTFavorite
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload