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Data bag search for Chef Solo

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README.md

chef-solo-search

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Chef-solo-search is a cookbook library that adds data bag search powers to Chef Solo. Data bag support was added to Chef Solo by Chef 0.10.4. Please see Supported queries for a list of query types which are supported.

Requirements

  • ruby >= 1.8
  • ruby-chef >= 0.10.4

Installation

Install this cookbook into your Chef repository using your favorite cookbook management tool (Librarian, Berkshelf, knife...).

In Chef 11, you must either add this to the run list of the nodes where it's used or include it as a dependency in the recipes that use it. See changes in Chef 11.

Now you have to make sure chef-solo knows about data bags, therefore add

data_bag_path "#{node_work_path}/data_bags"

to the config file of chef-solo (defaults to /etc/chef/solo.rb).

The same for your roles, add

role_path "#{node_work_path}/roles"

To support encrypted data bags, add

encrypted_data_bag_secret "path_to_data_bag_secret"

Supported queries

The search methods supports a basic sub-set of the Lucene query language.

General queries:

# all items in ':users'
search(:users, "*:*")
search(:users)
search(:users, nil)

# all items from ':users' which have a 'username' attribute
search(:users, "username:*")
search(:users, "username:[* TO *]")

# all items from ':users' which don't have a 'username' attribute
search(:users, "(NOT username:*)")
search(:users, "(NOT username:[* TO *])")

Queries on attributes with string values:

# all items from ':users' with username equals 'speedy'
search(:users, "username:speedy")

# all items from ':users' with username is unequal to 'speedy'
search(:users, "NOT username:speedy")

# all items which 'username'-value begins with 'spe'
search(:users, "username:spe*")

Queries on attributes with array values:

# all items which 'children' attribute contains 'tom'
search(:users, "children:tom")

# all items which have at least one element in 'children' which starts with 't'
search(:users, "children:t*")

Queries on attributes with boolean values:

search(:users, "married:true")

Queries in attributes with integer values:

search(:users, "age:35")

OR conditions in queries:

search(:users, "age:42 OR age:22")

AND conditions in queries:

search(:users, "married:true AND age:35")

NOT condition in queries:

search(:users, "children:tom AND (NOT gender:female)")

More complex queries:

search(:users, "children:tom AND (NOT gender:female) AND age:42")

Supported Objects

The search methods have support for 'roles', 'nodes' and 'databags'.

Roles

You can use the standard role objects in JSON form and put them into your role path

{
  "name": "monitoring",
  "default_attributes": { },
  "override_attributes": { },
  "json_class": "Chef::Role",
  "description": "This is just a monitoring role, no big deal.",
  "run_list": [
  ],
  "chef_type": "role"
}

You can also use ruby formatted roles and put them in your role path. The one proviso being that the filename must match the rolename

name "other"
description "AN Other Role"
run_list []

Databags

You can use the standard databag objects in JSON form.

{
  "id": "my-ssh",
  "hostgroup_name": "all",
  "command_line": "$USER1$/check_ssh $HOSTADDRESS$"
}

Nodes

Nodes are injected through a databag called 'node'. Create a databag called 'node' and put your JSON files there.

You can use the standard node objects in JSON form.

{
  "id": "vagrant",
  "name": "vagrant-vm",
  "chef_environment": "_default",
  "json_class": "Chef::Node",
  "automatic": {
    "hostname": "vagrant.vm",
    "os": "centos"
  },
  "normal": {
  },
  "chef_type": "node",
  "default": {
  },
  "override": {
  },
  "run_list": [
    "role[monitoring]"
  ]
}

Running tests

Running tests is as simple as:

% rake test
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