Configuring metricsd to setup a disk alarm
What is MetricsD? Metricsd is a golang program that gathers metrics from instance an AWS EC2 node and reports these metrics to places such as AWS / CloudWatch. Metrics collected include disk space, cpu activity, memory allocation, Cassandra KPIs. MetricsD is most often run as a systemd process. Disk Gatherer reports to AWS / CloudWatch, sets alarms or sends emails. The Disk Gatherer reports disk state information to AWS / CloudWatch, sets alarms in AWS / CloudWatch or sends emails.