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Nagios vs Splunk: 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, Splunk is detailed as "Search, monitor, analyze and visualize machine data". Splunk Inc. provides the leading platform for Operational Intelligence. Customers use Splunk to search, monitor, analyze and visualize machine data.
Nagios belongs to "Monitoring Tools" category of the tech stack, while Splunk can be primarily classified under "Log Management".
Nagios is an open source tool with 60 GitHub stars and 36 GitHub forks. Here's a link to Nagios's open source repository on GitHub.
Uber Technologies, Dropbox, and 9GAG are some of the popular companies that use Nagios, whereas Splunk is used by Starbucks, Intuit, and Razorpay. Nagios has a broader approval, being mentioned in 177 company stacks & 40 developers stacks; compared to Splunk, which is listed in 31 company stacks and 29 developer stacks.
- free open source
- modern interface and architecture
- large community
- extendable I knew Nagios for decades but it was really outdated (by its architecture) at some point. That's why Icinga started first as a fork, not with Icinga2 it is completely built from scratch but backward-compatible with Nagios plugins. Now it has reached a state with which I am confident.
Pros of Nagios
- It just works53
- The standard28
- Customizable12
- The Most flexible monitoring system8
- Huge stack of free checks/plugins to choose from1
Pros of Splunk
- Alert system based on custom query results2
- API for searching logs, running reports2
- Query engine supports joining, aggregation, stats, etc2
- Ability to style search results into reports1
- Query any log as key-value pairs1
- Splunk language supports string, date manip, math, etc1
- Granular scheduling and time window support1
- Custom log parsing as well as automatic parsing1
- Dashboarding on any log contents1
- Rich GUI for searching live logs1
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Cons of Nagios
Cons of Splunk
- Splunk query language rich so lots to learn1
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