Versions Compared

Old Version 28

changes.mady.by.user Jeff Sposetti

Saved on

compared with

New Version 29

changes.mady.by.user Jeff Sposetti

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

  1. On the Ambari Server, browse to the /var/lib/ambari-server/resources/stacks/HDP/2.0.6/services directory. In this case, we will browse to the HDP 2.0 Stack definition.

    Code Block
    cd /var/lib/ambari-server/resources/stacks/HDP/2.0.6/services

  2. Create a directory named /var/lib/ambari-server/resources/stacks/HDP/2.0.6/services/TESTSRV that will contain the service definition for TESTSRV.

    Code Block
    mkdir /var/lib/ambari-server/resources/stacks/HDP/2.0.6/services/TESTSRV

  3. Browse to the newly created TESTSRV directory, create a metainfo.xml file that describes the new service. For example:

    Code Block
    <?xml version="1.0"?>
<metainfo>
    <schemaVersion>2.0</schemaVersion>
    <services>
        <service>
            <name>TESTSRV</name>
            <displayName>My<displayName>New Test Service</displayName>
            <comment>A New Test Service</comment>
            <version>0.1.0</version>
            <components>
                <component>
                    <name>TEST_CLIENT</name>
                    <displayName>New Test Client</displayName>
                    <category>CLIENT</category>
                    <commandScript>
                        <script>scripts/test_client.py</script>
                        <scriptType>PYTHON</scriptType>
                        <timeout>600</timeout>
                    </commandScript>
                    <customCommands>
                      <customCommand>
                        <name>SOMETHINGCUSTOM</name>
                        <commandScript>
                          <script>scripts/test_client.py</script>
                          <scriptType>PYTHON</scriptType>
                          <timeout>600</timeout>
                        </commandScript>
                      </customCommand>
                    </customCommands>
                </component>
            </components>
            <osSpecifics>
                <osSpecific>
                    <osFamily>any</osFamily>
                </osSpecific>
            </osSpecifics>
        </service>
    </services>
</metainfo>
  4. In the above, my service name is "TESTSRV", and it contains one component "TEST_CLIENT" that is of component category "CLIENT". That client is managed via the command script scripts/test_client.py. Next, let's create that command script.

  5. Create a directory for the command script /var/lib/ambari-server/resources/stacks/HDP/2.0.6/services/TESTSRV/package/scripts that we designated in the service metainfo.

    Code Block
    mkdir -p /var/lib/ambari-server/resources/stacks/HDP/2.0.6/services/TESTSRV/package/scripts

  6. Browse to the scripts directory and create the test_client.py file. For example:

    Code Block
    import sys
from resource_management import *

class TestClient(Script):
  def install(self, env):
    print 'Install the client';
  def configure(self, env):
    print 'Configure the client';
  def somethingcustom(self, env):
    print 'Something custom';

if __name__ == "__main__":
  TestClient().execute()

  7. Now, restart Ambari Server for this new service definition to be distributed to all the Agents in the cluster.

    Code Block
    ambari-server restart

...