Monitoring tools in Linux, in any environment, whether Linux or others, are important to keep the infrastructure and network intact and running smoothly. In this article, we have compiled the top 18+ monitoring tools in Linux that will adequately manage the applications and ensure that system is in good health. We have also categorized them into open source and closed source tools.
Let us take an in-depth look at these monitoring tools in linux and see what they have to offer to Linux systems!
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Zenoss is a known name in the network monitoring business. Since its inception, this company has offered several monitoring products, and one of them is the closed-source package called Zenoss cloud. It is mainly used for scalable network monitoring because it is rooted in a cloud-based architecture and can monitor fast-growing and large-scale businesses. Like any other closed source tool, it also offers a free trial.
Features of Zenoss Cloud
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Nagios Network Analyzer contains network monitoring, and data log monitoring software to ensure that network and processes are threat-free and run smoothly. In case some abnormal process is detected, Nagios Network Analyzer automatically alerts the IT center to fix it as soon as possible. Nagios has an individualized view board that helps specialists to focus on the specified areas of the network. The free trial version of Network Analyzer is called Nagios Core.
Paessler is a German company that offers a closed source network monitoring tool called PRTG Network. PRTG network consists of sensors that monitor SNMP, LAN, cloud services, and collect data from a wide range of sources. The price depends on the number of sensors you want to license. The cost break-up for each is as follows. Paessler offers a minimum monitoring package called PRTG 500, which consists of 500 sensors and one server monitor. Also, it offers a maximum package called PRTG XL5 which has an unlimited number of sensors and up to five server monitors. It also offers a 30-day free trial of the complete program.
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NTA is a very easy-to-use tool that provides visualized bandwidth monitoring to find the network units' capacity and see if any IT issues are pending. SolarWinds software is famous for providing impressive color-coded and searchable visual data. The performance analysis dashboard lets you analyze the precise NetFlow while operating in a streamlined visual display. NTA offers traffic-based alerts and helps in detecting threats in your network. It is also available for a 30 days free trial.
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Icinga 2 is a modified version of Icinga, which has got recognized among IT specialists for its live monitoring and scalability. Icinga 2 is compatible with almost every OS and provides color-coded graphs to measure vast networks. It contains a highly interactive visual monitoring interface for easy access monitoring.
OpenNMS was established as a management-oriented monitoring tool in the late 1990s. It boasts of its notification system that gives live updates to the central control based on API monitoring results. It allows integration with industry-standard management tools. OpenNMS is available in two editions – Meridian and Horizon. Horizon is the free edition, while Meridian comes with an annual subscription.
Cacti is one of the prominent names in open-source network monitoring tools. Using it, multiple users can monitor the network devices and log network data; also, users are assigned particular items with the help of privacy settings. Cacti has a comprehensive online support system, showing templates on how to operate it on different devices. As it is an open-source monitoring tool, it is 100% free
Zabbix is a widely used network monitoring tool that supports Linux, Unix systems, Windows as well as Solaris systems, and has become a go-to tool for IT people. Zabbix is also an established monitoring tool having a significant online community. It offers a monitoring dashboard to detect disk space changes, CPU load, and network activity to track activities on your network.
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Pandora Flexible Monitoring System is a network monitoring tool adaptable to almost any operating system. It gives you options for sensor add-ons and application integration. The basic version can perform a useful graphical analysis, which is usually not available in open-source network monitoring tools.
LibreNMS is a powerful, feature-rich, and open-source auto-discovering network monitoring system. It is compatible with several operating systems, including Linux, FreeBSD, and network devices such as Brocade, Foundry, HP, Cisco, Juniper, and many more.
Prometheus is compatible with Linux and Unix systems and offers numerous basic network monitoring functions for free such as graphical visualization capacity. It has a built-in PromQL feature to provide customized and user-friendly visualization of its interface. Prometheus may not have a community support mechanism like Cacti and Zabbix, but major company networks are using it and will likely gain influence in the coming years.
iftop is an open source monitoring tool that displays bandwidth usage on an interface. It records network traffic on a named interface and displays current bandwidth usage by pairs of hosts. By default, it counts all IP packets passing through the filter. Here are some fantastic features of an iftop tool.
Observium Community is a Linux network monitoring tool used for small servers. It has a group of online experts who send its updates and biannual patches to system software. It also supports a wide variety of operating systems and uses SNMP network monitoring.
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Monitorix is a small server monitoring tool specifically designed for Linux users, but now it supports all Unix-based operating systems. It operates on small servers exclusively and provides an excellent deal of monitoring capabilities. Its features have become increasingly comprehensive with time, and now it can monitor everything from network capabilities to disk drive heat to data consumption, ensuring the network's operating success.
dstat is a versatile tool for generating Linux system resource statistics that can be used as a replacement for all the tools mentioned in this post. It has some extra features, counters and is highly extensible. Users having Python knowledge can easily build their own plugins.
Features of dstat:
Htop (the H stands for the designer's name, Hisham) is a flexible monitoring program that can be installed on Linux and Unix-based systems to monitor small-network use with accuracy and reliability. Htop might not be a visually pleasing monitoring tool, but it's beneficial in providing live updates on network activity and storage capacity in plain English. Moreover, if you don't wish to parse through several monitoring updates, htop uses an intuitive color-coding system.
The next monitoring tool is one of the simplest and surprisingly flexible Linux monitoring solutions. BWM-NG (which stands for Bandwidth Monitor–Next Generation) does not provide any graphical updates or fancy color coding. However, it's nonetheless a useful program for small-network Linux specialists primarily interested in bandwidth monitoring.
EtherApe is a network monitoring software compatible with Linux/Unix systems. For IT specialists wishing to monitor small networks with fewer numbers and jargony script, EtherApe is the best option to go with. It can read packets from the network and from a file and support monitoring devices like WLAN, FDDI, ISDN, and more.
Ibmonitor is a terminal-based application and monitors bandwidth usage and basic Linux network updates for smaller units. It provides simple analyses of the network and summarizes total network data. Like htop, it also uses color-coded text, and you can find multiple online forums to explain features.
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Pooja Mishra is an enthusiastic content writer working at Mindmajix.com. She writes articles on the trending IT-related topics, including Big Data, Business Intelligence, Cloud computing, AI & Machine learning, and so on. Her way of writing is easy to understand and informative at the same time. You can reach her on LinkedIn & Twitter.