If the request is not being denied, then my question should be changed. The REST request above used to work - but now on Ambari 2.2 it does not have any affect. Here is something else that is interesting - when I try to start all services using the following request: curl -u admin:admin -i -H 'X-Requested-By: ambari' -X PUT -d '{"RequestInfo": {"context" :"Start all services"}, "Body": {"ServiceInfo": {"state": "STARTED"}}}' http://namenode:8080/api/v1/clusters/horton/services?ServiceInfo this request gets accepted by Ambari, but here is what it does: That image is not cropped - all that happens is Pig, Slider, Sqoop and the Tez Client get installed. What I expected to see was all of my services starting. Again, this is based on the curl command above that I have used with Ambari 2.1 regularly.
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