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ansible-role-telegraf's Issues

telegraf config rendering fails if the entry has no attributes

Using ubuntu 16.04. Ansible 2.2.
While rendering the telegraf.conf the following fails:

plugins:
  outputs:
    influxdb:
      urls: ['{{influxdb_host_url}}']
      database: "telegraf"
      username: "telegraf"
      password: "{{ influxdb_telegraf_password }}"
  inputs:
    # Read metrics about cpu usage
    cpu:
      percpu: true
      totalcpu: true
      collect_cpu_time: false
   diskio:
   kernel:

Gets 'not iterable' error
The following works ok

plugins:
  outputs:
    influxdb:
      urls: ['{{influxdb_host_url}}']
      database: "telegraf"
      username: "telegraf"
      password: "{{ influxdb_telegraf_password }}"
  inputs:
    # Read metrics about cpu usage
    cpu:
      percpu: true
      totalcpu: true
      collect_cpu_time: false
   #diskio:
   #kernel:

Do I need to add a dummy attribute, or [] or something?

Telegraf test should be optional

If a telegraf input depends on the existence of a service (e.g. zookeeper), the test fails:

TASK [jamescarr.telegraf : verify generated telegraf config] *******************
fatal: [zookeeper]: FAILED! => {"changed": true, "cmd": "/usr/bin/telegraf -config /etc/telegraf/telegraf.conf -test", "delta": "0:00:00.022639", "end": "2016-09-08 10:45:30.549514", "failed": true, "rc": 1, "start": "2016-09-08 10:45:30.526875", "stderr": "dial tcp 127.0.0.1:2181: getsockopt: connection refused\n2016/09/08 10:45:30 dial tcp 127.0.0.1:2181: getsockopt: connection refused", "stdout": "* Plugin: zookeeper, Collection 1", "stdout_lines": ["* Plugin: zookeeper, Collection 1"], "warnings": []}

This makes it impossible to use this role for such inputs.

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