Nagios vs Prometheus: What are the differences?
Developers describe Nagios as "Complete monitoring and alerting for servers, switches, applications, and services". Nagios is a host/service/network monitoring program written in C and released under the GNU General Public License. On the other hand, Prometheus is detailed as "An open-source service monitoring system and time series database, developed by SoundCloud". Prometheus is a systems and service monitoring system. It collects metrics from configured targets at given intervals, evaluates rule expressions, displays the results, and can trigger alerts if some condition is observed to be true.
Nagios and Prometheus can be primarily classified as "Monitoring" tools.
Some of the features offered by Nagios are:
- Monitor your entire IT infrastructure
- Spot problems before they occur
- Know immediately when problems arise
On the other hand, Prometheus provides the following key features:
- a multi-dimensional data model (timeseries defined by metric name and set of key/value dimensions)
- a flexible query language to leverage this dimensionality
- no dependency on distributed storage
"It just works" is the primary reason why developers consider Nagios over the competitors, whereas "Powerful easy to use monitoring" was stated as the key factor in picking Prometheus.
Nagios and Prometheus are both open source tools. Prometheus with 25K GitHub stars and 3.55K forks on GitHub appears to be more popular than Nagios with 60 GitHub stars and 36 GitHub forks.
According to the StackShare community, Prometheus has a broader approval, being mentioned in 243 company stacks & 85 developers stacks; compared to Nagios, which is listed in 177 company stacks and 40 developer stacks.
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Red Hat, Inc.
Red Hat, Inc.