What users are saying about
140 Ratings
3 Ratings
140 Ratings
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Score 7.9 out of 100
3 Ratings
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Score 5.7 out of 100

Likelihood to Recommend

Nagios Core

Nagios monitoring is well suited for any mission critical application that requires per/second (or minute) monitoring. This would probably include even a shuttle launch. As Nagios was built around Linux, most (85%) plugins are Linux based, therefore its more suitable for a Linux environment.
As Nagios (and dependent components) requires complex configurations & compilations, an experienced Linux engineer would be needed to install all relevant components.
Any company that has hundreds (or thousands) of servers & services to monitor would require a stable monitoring solution like Nagios. I have seen Nagios used in extremely mediocre ways, but the core power lies when its fully configured with all remaining open-source components (i.e. MySQL, Grafana, NRDP etc). Nagios in the hands of an experienced Linux engineer can transform the organizations monitoring by taking preventative measures before a disaster strikes.
Shawn Brito | TrustRadius Reviewer

Sensu

Sooner or later, companies are going to figure out that there's more to monitoring than what Nagios can provide. For those that want to dip their toe in the water and still provide backward compatibility with a legacy Nagios environment, Sensu is a good choice.It's mainly for businesses that want more than Nagios but don't want to take the full plunge with something radically different and metric-based such as Prometheus.Having moved to metric-based monitoring so far as I'm able, I can say with confidence that it's far better than what Nagios or Sensu provide.
Anonymous | TrustRadius Reviewer

Feature Rating Comparison

Application Performance Management

Nagios Core
Sensu
3.2
Application monitoring
Nagios Core
Sensu
3.0
Database monitoring
Nagios Core
Sensu
3.0
Threshold alerts
Nagios Core
Sensu
6.0
Application performance management console
Nagios Core
Sensu
1.0
Virtualization monitoring
Nagios Core
Sensu
3.0
Server availability and performance monitoring
Nagios Core
Sensu
3.0

Pros

Nagios Core

  • Monitoring of services is one of the biggest benefits for our company. Being able to respond in a timely fashion keeps business smooth.
  • Hardware and device monitoring are easy to set up with proper parameters.
  • Notification to key staff to be able to respond quickly makes issues go away faster.
Eric Krueger | TrustRadius Reviewer

Sensu

  • Unique concept as a "monitoring router" that can tie services together.
  • Backward-compatible with Nagios environments.
  • More of a DevOps focus than Nagios.
Anonymous | TrustRadius Reviewer

Cons

Nagios Core

  • Nagios could use core improvements in HA, though, Nagios itself recommends monitoring itself with just another Nagios installation, which has worked fine for us. Given its stability, and this work-around, a minor need.
  • Nagios could also use improvements, feature wise, to the web gui. There is a lot in Nagios XI which I felt were almost excluded intentionally from the core project. Given the core functionality, a minor need. We have moved admin facing alerts to appear as though they originate from a different service to make interacting with alerts more practical.
Anonymous | TrustRadius Reviewer

Sensu

  • Terrible documentation that assumes you're already an expert in everything that Sensu can do.
  • Significantly more work than Nagios to get basic checks on and configured.
  • Web interface is primitive and not even on the same level as Nagios XI.
  • Large price hikes after Sensu Go was released.
Anonymous | TrustRadius Reviewer

Likelihood to Renew

Nagios Core

Nagios Core 9.9
Based on 3 answers
We're currently looking to combine a bunch of our network montioring solutions into a single platform. Running multiple unique solutions for monitoring, data collection, compliance reporting etc has become a lot to manage.
Anonymous | TrustRadius Reviewer

Sensu

No score
No answers yet
No answers on this topic

Usability

Nagios Core

Nagios Core 4.0
Based on 1 answer
The Nagios UI is in need of a complete overhaul. Nice graphics and trendy fonts are easy on the eyes, but the menu system is dated, the lack of built in graphing support is confusing, and the learning curve for a new user is too steep.
Anonymous | TrustRadius Reviewer

Sensu

No score
No answers yet
No answers on this topic

Support Rating

Nagios Core

Nagios Core 8.0
Based on 9 answers
I haven't had to use support very often, but when I have, it has been effective in helping to accomplish our goals. Since Nagios has been very popular for a long time, there is also a very large user base from which to learn from and help you get your questions answered.
Chris Saenz | TrustRadius Reviewer

Sensu

Sensu 3.0
Based on 1 answer
Sensu's customer support was always willing to work with us but never really seemed to learn much from our experiences. I think they get a lot of customers with DevOps IT teams that are willing to put in a lot of elbow grease to get the most of Sensu's architecture.However, despite explaining my continued disappointment with their documentation and the overall flow of the product, I never got much more than a "sorry" and a notice that their documentation was open source if I wanted to contribute to it.The problem, of course, is that you can't document what you don't understand. I'm a former technical writer, so I know that better than most.
Anonymous | TrustRadius Reviewer

Alternatives Considered

Nagios Core

I have been using Nagios for 10+ years, so I am very familiar with it. The learning curve with SolarWinds was more difficult for me to pick up than Nagios and it wasn't as easy (at first) to duplicate, edit, etc. in SolarWinds. I genuinely think Nagios is a great product for many reasons, one of which is the unbeatable price.
Anonymous | TrustRadius Reviewer

Sensu

We initially compared Sensu to Nagios XI. Nagios has languished for years and clearly wouldn't scale well without a lot of effort, while Sensu's architecture was clearly designed to be better at scaling horizontally.
Anonymous | TrustRadius Reviewer

Return on Investment

Nagios Core

  • Much better network device performance metrics allowing to troubleshoot and do before/after changes comparisons
  • Has helped us to integrate with our Service Management tool (through other 3rd party tools)
  • Important part of our overall network health dashboard providing granular details at the device level (not end-to-end performance)
  • Cost is very convenient
Manuel Ayala | TrustRadius Reviewer

Sensu

  • Standing up the Sensu Go server took very little effort.
  • Setting up and maintaining the build processes and deployment logic for Sensu assets and checks was somewhat exhausting and resulted in lower adoption among non-DevOps IT.
  • The limited web interface resulted in lower adoption among non-DevOps IT.
Anonymous | TrustRadius Reviewer

Screenshots

Pricing Details

Nagios Core

General

Free Trial
Yes
Free/Freemium Version
Yes
Premium Consulting/Integration Services
Yes
Entry-level set up fee?
No

Sensu

General

Free Trial
Yes
Free/Freemium Version
Yes
Premium Consulting/Integration Services
Yes
Entry-level set up fee?
Optional

Rating Summary

Likelihood to Recommend

Nagios Core
8.6
Sensu
2.0

Likelihood to Renew

Nagios Core
9.9
Sensu

Usability

Nagios Core
4.0
Sensu

Support Rating

Nagios Core
8.0
Sensu
3.0

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