question API + show component status in Archives of Support Questions (Read Only)

API + show component status

mike_bronson7 — Sun, 18 Aug 2019 04:47:03 GMT

why API not capture the real status of component

for example by this API ( example down ) we capture the status of APP_TIMELINE_SERVER

component and its show the component started ( "state":"STARTED", )

but in fact the real status from ambari is STOP

curl -u $USER:$PASSWORD -H "X-Requested-By: ambari" -X GET http://localhost:8080/api/v1/clusters/HDP/components/APP_TIMELINE_SERVER
{
  "href" : "http://localhost:8080/api/v1/clusters/HDP/components/APP_TIMELINE_SERVER",
  "ServiceComponentInfo" : {
    "category" : "MASTER",
    "cluster_name" : "HDP",
    "component_name" : "APP_TIMELINE_SERVER",
    "display_name" : "App Timeline Server",
    "init_count" : 0,
    "install_failed_count" : 0,
    "installed_count" : 1,
    "recovery_enabled" : "true",
    "service_name" : "YARN",
    "started_count" : 0,
    "state" : "STARTED",
    "total_count" : 1,
    "unknown_count" : 0
  },
  "host_components" : [
    {
      "href" : "http://localhost:8080/api/v1/clusters/HDP/hosts/master01.sys67.com/host_components/APP_TIMELINE_SERVER",
      "HostRoles" : {
        "cluster_name" : "HDP",
        "component_name" : "APP_TIMELINE_SERVER",
        "host_name" : "master01.sys67.com"
      }
    }
  ]

so how it can be?

why API show different the Ambari GUI?

or maybe what is wrong with my API syntax ?

Re: API + show component status

asirna — Mon, 29 Jan 2018 16:42:15 GMT

@Michael Bronson,

I'm not sure why the above API is returning different status. It may be a bug. You can use this API to get the correct status

curl -u {ambari-username}:{ambari-password} -H "X-Requested-By: ambari" -X GET http://{ambari-host}:{ambari-port}/api/v1/clusters/{clustername}/hosts/{host-name}/host_components/APP_TIMELINE_SERVER?fields=HostRoles/state

Replace the place holders. {host-name} should be replaced with the hostname of the APP TIMELINE SERVER.

Thanks,

Aditya

Re: API + show component status

mike_bronson7 — Mon, 29 Jan 2018 17:14:43 GMT

what need to put in - {host-name} , ( we already set the hostname in ambari-host )

Re: API + show component status

asirna — Mon, 29 Jan 2018 17:33:53 GMT

@Michael Bronson,

Replace {host-name} with the host name where App timeline server is installed. From your output in the question looks like App time line server is installed on "master01.sys67.com". So you can try this url

curl -u $USER:$PASSWORD -X GET -H "X-Requested-By: ambari" http://localhost:8080/api/v1/clusters/HDP/hosts/master01.sys67.com/host_components/APP_TIMELINE_SERVER?fields=HostRoles/state

Thanks,

Aditya