Wondering what were the driving factors to replace Nagios and Ganglia with Ambari Metrics.
The following reasons are cited by Siddarth Waggle in AMBARI-5707 (https://issues.apache.org/jira/browse/AMBARI-5707) as reasons for the proposal of Ambari Metrics:
Problems with current system:
There was also a number of customers already using Nagios and/or Ganglia in their infrastructure and there were version incompatibilities between those installations and the versions shipped with HDP.
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