I have not been able to get power actions to work through the v2 API on foreman 1.7.1. I am following the API spec here: http://theforeman.org/api/apidoc/v2/hosts/power.html

curl -X PUT --user user:pass -H "Content-Type: application/json" -d '{"power_action":"status","host":{}}' https://foreman/api/v2/hosts/testhost.example.com/power

{

"error": {"message":"undefined method `search_for' for #<Class:0x000000045395e0>"}

}

Full stack trace: http://pastebin.com/dtwx6x2e

The same operation works OK in the UI.

[root@foreman2.cs.ops ~]# foreman-debug

HOSTNAME: foreman2.cs.ops.expertcity.com
       OS: redhat
  RELEASE: Red Hat Enterprise Linux Server release 6.6 (Santiago)
  FOREMAN: 1.7.1
     RUBY: ruby 1.8.7 (2013-06-27 patchlevel 374) [x86_64-linux]
   PUPPET: 
  DENIALS: 0

A debug file has been created: /tmp/foreman-debug-ORzeH.tar.bz2 (18797850 bytes)

You may want to upload the tarball to our public server via rsync. There is a
write only directory (readable only by Foreman core developers) for that. Note
the rsync transmission is UNENCRYPTED:

rsync /tmp/foreman-debug-ORzeH.tar.bz2 rsync://theforeman.org/debug-incoming

Do you want to do this now? [y/N] y
Uploading...
The tarball has been uploaded, please contact us on mailing list or IRC.