This article provides pointers on different tools that help monitor an Aerospike cluster.
Aerospike offers different methods to monitor the database. Nagios and Graphite are common tools which can be used for Alerting and Trending respectively.
We recommend to first take a look at this page for the key metrics of an Aerospike cluster.
Using Graphite you can monitor how the database is trending. The script requires python version 2.6+. For more details on how to use Graphite, see here.
Using Nagios you can setup alerts against specific statistic metrics. For more details on how to use Nagios, see here.
See here for the list of monitoring solutions available for Aerospike: http://www.aerospike.com/docs/operations/monitor