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From dlyle65535 <...@git.apache.org>
Subject [GitHub] incubator-metron pull request #133: METRON-180 Granular Control of Component...
Date Mon, 06 Jun 2016 23:32:24 GMT
Github user dlyle65535 commented on a diff in the pull request:

    https://github.com/apache/incubator-metron/pull/133#discussion_r65987913
  
    --- Diff: metron-deployment/playbooks/metron_install.yml ---
    @@ -74,47 +83,115 @@
       tags:
         - mysql-client
     
    -- hosts: sensors
    -  become: true
    -  roles:
    -    - ambari_gather_facts
    -    - { role: tap_interface, when: install_tap | default(False) == True }
    -    - { role: pycapa, when: install_pycapa | default(True) == True }
    -    - { role: bro, when: install_bro | default(True) == True }
    -    - { role: flume,  when: install_snort | default(True) == True }
    -    - { role: snort , when: install_snort | default(True) == True }
    -    - { role: yaf, when: install_yaf | default(True) == True }
    -    - { role: pcap_replay, when: install_pcap_replay | default(False) == True }
    -    - { role: sensor-test-mode, when: sensor_test_mode | default(False) == True }
    -  tags:
    -      - sensors
    -
    +#
    +# parsers, enrichment, and indexing topologies
    +#
     - hosts: enrichment
       become: true
       roles:
         - role: metron_streaming
       tags:
         - enrichment
     
    +#
    +# user interface
    +#
     - hosts: pcap_server
       become: true
       roles:
    -    - { role: metron_pcapservice, when: install_elasticsearch | default(True) == True
}
    +    - role: metron_pcapservice
       tags:
    -    - pcap_service
    +    - pcap-service
     
     - hosts: web
       become: true
       roles:
    -    - { role: kibana, when: install_elasticsearch | default(True) == True }
    +    - role: kibana
       tags:
    -    - web
    +    - kibana
     
    +#
    +# sensors
    +#
    +- hosts: sensors
    +  become: true
    +  roles:
    +    - role: ambari_gather_facts
    +    - role: tap_interface
    +  tags:
    +    - tap
    +
    +- hosts: sensors
    +  become: true
    +  roles:
    +    - role: ambari_gather_facts
    +    - role: pycapa
    +  tags:
    +    - pycapa
    +
    +- hosts: sensors
    +  become: true
    +  roles:
    +    - role: ambari_gather_facts
    +    - role: bro
    +  tags:
    +    - bro
    +
    +- hosts: sensors
    +  become: true
    +  roles:
    +    - role: ambari_gather_facts
    +    - role: flume
    +  tags:
    +    - flume
    +
    +- hosts: sensors
    +  become: true
    +  roles:
    +    - role: ambari_gather_facts
    +    - role: snort
    +  tags:
    +    - snort
    +
    +- hosts: sensors
    +  become: true
    +  roles:
    +    - role: ambari_gather_facts
    +    - role: yaf
    +  tags:
    +    - yaf
    +
    +- hosts: sensors
    +  become: true
    +  roles:
    +    - role: ambari_gather_facts
    +    - role: pcap_replay
    +  tags:
    +    - pcap-replay
    +
    +- hosts: sensors
    +  become: true
    +  roles:
    +    - role: ambari_gather_facts
    +    - role: sensor-test-mode
    +  tags:
    +    - sensor-test-mode
    +
    --- End diff --
    
    I think I remembered my comment from last week- you may be able to combine these into
a single hosts/roles group by using the following construct:
    ```yaml
    hosts: sensors
    become: true
    tags: sensors
    roles:
         -{ role: ambari_gather_facts, tags: [ 'always'] }
        - { role: tap_interface, tags: ['tap'] }
        - { role: pycapa, tags: ['pycapa'] }
        - { role: bro, tags: ['bro'] }
        - { role: flume,  tags: ['snort','flume'] }
        - { role: snort , tags: ['snort'] }
        - { role: yaf, tags: ['yaf'] }
        - { role: pcap_replay, tags: ['pcap-replay'] }
        - { role: sensor-test-mode, tags: ['sensor-test-mode'] }
    ```
    This is per the docs, so ymmv. But if it works as advertised, I think it's a little bit
more readable. Otherwise do what you got to do. 


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