Database Reference
In-Depth Information
Summary
There are many tools available for building monitoring systems. Nagios is just one
of the common general-purpose monitoring tools. As long as some application is
checking on the health and availability of your system and letting you know when
an issue is present, or about to present itself, you will be in good shape. There are
also some good examples of how your main application and other parts of your ap-
plication interact with Cassandra and can be instrumented to give you a feeling of
total information awareness and potentially the ability to get a good night's sleep
when it is all in production.
In this example, Nagios can act as an early-warning tool. It can give you a
heads-up to look at the machine in question and dig deeper into a potential prob-
lem before it turns into something more serious such as a full-fledged outage or a
completely downed node. Ensuring an intelligently set-up monitoring infrastruc-
ture is essential to having a well-designed and architected system.
