Network monitoring is a critical part of running any business.
Network monitoring lets you keep an eye on all the devices and software that make up your network, so you can ensure they’re running smoothly. It also allows you to see when something goes wrong—for example, if a server crashes or someone tries to hack into your network.
Open-source monitoring is a great way to get started with network mon
itoring because it’s free and easy to use. It’s also more flexible than commercial software because it’s open source and customizable, meaning you can customize it to fit your needs. If you want something more complex or advanced than what open source offers, plenty of paid options are available.
Open-source monitoring tools
Open-source monitoring tools are a great way to get started with the task of monitoring your networks. They are free and can help you gain valuable insight into how your network is performing.
It’s important to remember that there are two basic types of open-source network monitoring tools: active and passive. Active tools send data to a central server where it is collected, analyzed and reported to the user. Passive tools do not transmit data to a central server; instead, they store all the information locally on each host.
Active tools have distinct advantages over passive ones in terms of capabilities and cost. They can provide more detailed information about what is happening on your network and be used to monitor multiple hosts at once. This makes them ideal for large organizations with multiple locations or departments. However, they require additional infrastructure, which makes them more expensive than passive tools by default.
Passive tools are simpler to implement because they don’t require any additional hardware or software beyond what already exists within your organization’s infrastructure. They also don’t require as much maintenance since no new code needs to be written for each new host being monitored through them (as opposed to active).
Nagios open source
Nagios is an open-source software application that monitors and reports on the status of servers, computers, networks and other IT infrastructure. It alerts users to problems with their systems so they can get them fixed before they turn into bigger problems.
Nagios can monitor many different aspects of your infrastructure, including:
- The availability of services such as websites and databases,
- The performance of network elements such as routers and switches,
- The load on a system’s processors, memory or disk space.
The Nagios server gathers information from these systems and applications and stores it in a database. It then uses an agent (a small program) installed on each monitored host to send that data back to the Nagios server where it is stored so you can view it later if needed.
Prometheus open source
Prometheus is an open-source monitoring system and time series database. 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. The core components are a time series database (optimized for fast queries), a data model, an HTTP-based API for retrieval of metrics, rule language (for evaluating time series data) and alerting engine.
Grafana open source
Grafana is an open-source system for displaying time-series data. It is a tool that can be used to create dashboards, web applications, and standalone applications.
Grafana’s main features are its ability to visualize and query metrics, edit metadata, and use built-in or custom panels. It also supports plugins to add new functionality or extend existing features.
Netflow analyzer open source
A Netflow analyzer is an open-source network traffic monitor that collects and analyses network traffic data. It is designed to help network administrators to detect and identify problems in their networks. A Netflow analyzer is a graphical tool that displays the graphical representation of the traffic flow. Netflow analyzer can be used to generate graphs, tables or reports from Netflow data collected by any device that supports Netflow protocol.
Netflow analyzer has three main components: a collector, an analyzer and a web interface. The collector collects Netflow data from the device that supports the Netflow protocol. The analyzer processes the collected data and produces reports about it. And finally, we have a web interface which allows us to view reports generated by the analyzer in our browser.
Open source APM
Open source application performance monitoring (APM) is a category of software that allows you to monitor the performance of your applications. It does this by collecting metrics from your application’s servers and then analyzing them to find out which ones need attention.
Free APM tools are useful for a variety of purposes, including:
- Monitoring the health of your application’s infrastructure
- Measuring the performance of applications, as well as identifying bottlenecks and other issues that may be affecting their performance
- Finding problems with an application’s architecture or codebase.
SNMP monitoring open source
The SNMP monitoring tool is open-source software that allows you to monitor your network. It provides a way to collect data from multiple devices, analyze it and send alerts when something goes wrong. It also allows you to monitor devices that do not support SNMP protocol. This means you can use this software to monitor Linux machines, Windows computers, routers and switches without having to install anything on them.
The tool has a web interface which makes it easy for anyone to configure the system and start monitoring their network. In addition, it provides a command line interface (CLI) that can be used by advanced users who want more control over their monitoring system.
Top open-source Linux monitoring tools: