From the post:
Apache Solr is an open source enterprise search service from the Lucene project. Solr is written in Java and runs as a standalone full-text search server within a servlet container such as Tomcat.
Like any service or component in your architecture, you’ll want to monitor it to ensure that it’s available and gather performance data to help with tuning.
In this post, we’ll look at how we can monitor Solr, what performance metrics we might want to gather and how we can easily achieve this with Opsview.
We’ll use Opsview as it is built on Nagios and thus has access to a wide range of plugins, yet provides a more approachable user interface for configuring service checks.
Just in case you need to monitor a Solr service as part of your setup.