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Showing content from https://docs.cfengine.com/latest/reference-functions-hostswithclass.html below:

hostswithclass - CFEngine 3.26 Docs

This function is only available in CFEngine Enterprise.

Prototype: hostswithclass(class, field)

Return type: slist

Description: Returns a list from the CFEngine Database with the information field of hosts on which classs is set.

On CFEngine Enterprise, this function can be used to return a list of hostnames, ip-addresses or public key SHAs of hosts that have a given class.

Note: This function only works locally on the hub, but allows the hub to construct custom configuration files for (classes of) hosts. Hosts are selected based on the classes set during the most recently collected agent run.

Arguments:

• class: string - Class name to look for - in the range: [a-zA-Z0-9_]+
• field: - Type of return value desired - one of
  • name
  • address
  • hostkey

Example:

code

bundle agent debian_hosts
{
vars:

  am_policy_hub::
    "host_list" slist => hostswithclass( "debian", "name" );

files:
  am_policy_hub::
    "/tmp/master_config.cfg"
         edit_line => insert_lines("host=$(host_list)"),
            create => "true";
}

History: Was introduced in 3.3.0, Nova 2.2.0 (2012). The hostkey field was introduced in 3.26.0

See also: hubknowledge(), remotescalar(), remoteclassesmatching()

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