1) this agent does not send the email, so I dont see an error. All other agents send an email when I get warnings..
2) for every host the “Ambari Agent Disk” is warning “Capacity Used: [64.75%, 6.8 GB] Capacity Total [10.4GB], path /usr/hdp
/usr/hdp is not a filesystem, its under /usr.. I see some patch that Apache may have, fixing some hard-coded /usr/hdp…. This is a Hortnworks cluster that I just upgraded from Ambari 1.7 and HDP 2.2 – 2.3, before the upgrade it used Nagios and Ganglia for alerting and metrics, but these were replaced in this upgrade process..