[GitHub] mhenke1 opened a new pull request #2857: Emit metrics via kamon

[gi...@git.apache.org]

mhenke1 opened a new pull request #2857: Emit metrics via kamon
URL: https://github.com/apache/incubator-openwhisk/pull/2857
 
 
   This PR implements the capability to send metric information via Kamon (http://kamon.io/)
   to statsd (https://github.com/etsy/statsd) instead or additionally to the existing metrics information 
   which is written into the system logs.
   
   Per default Kamon metrics are disabled and metrics as log information is enabled. 
   The system behavior is expected to be the same as before,
   but can be changed via Ansible configuration by adding the following settings the
   "group_vars/all" file of an environment:
    
   - metrics_kamon   -> enable metrics via kamon (true/false with default false)
   - metrics_kamon_statsd_host -> hostname (or ip address) of the statsd server
   - metrics_kamon_statsd_port-> port number of the statsd server
   - metrics_log: -> enable metrics via log file (true/false with default true)
   
   Example:
   ```
   # Metrics configuration
   metrics_kamon: false
   metrics_kamon_statsd_host: '192.168.99.100'
   metrics_kamon_statsd_port: '8125'
   metrics_log: true
   ```
 
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