14 Useful Performance and Network Monitoring Tools for Linux

If you’re working as a Linux/Unix system administrator, sure you know that you must have useful monitoring tools to monitor your system performance. As monitoring tools are very important in the job of a system administrator or a server webmaster, it’s the best way to keep an eye on what’s going on inside your system.

[ You might also like: 20 Command Line Tools to Monitor Linux Performance ]

Today we’re going to talk about another 14 Linux monitoring tools that you may use to do the job.

Site24x7’s Linux Monitoring Tool

With Site24x7’s monitoring platform, you can eliminate Linux server outages and performance issues by constantly tracking over 60 key performance metrics, including load average, CPU, memory, disk space, network bandwidth utilization, recent events, and Linux processes.

Configure thresholds for key performance metrics and receive instant alerts via SMS, email, mobile app push notifications, and other ITSM and collaboration tools whenever these thresholds are breached.

Site24x7 lets you automate incident remediation and makes your IT operations more agile and efficient.

Key Features:

  • Better visibility into the processes that affect your server health and performance with the exclusive Top Process Chart.
  • Services monitoring and Syslog monitoring for Linux servers.
  • A single console for MSPs to monitor their customers’ IT infrastructures.
  • Monitored metrics pushed via StatsD.
  • Support for over 100 plugins, including Redis, MySQL, and NGINX.
Site24X7's Linux Monitoring Tool
Site24X7’s Linux Monitoring Tool

1. Glances – Real-Time Linux System Monitoring

Glances is a monitoring tool built to present as much information as possible in any terminal size, it automatically takes the terminal window size it runs on, in other words, it’s a responsive monitoring tool.

Glances not only show information about CPU and memory usage but also monitor filesystem I/O, network I/O, hardware temperatures, fan speeds, disk usage, and logical volume.

Glances - Linux System Monitoring Tool
Glances – Linux System Monitoring Tool

Install Glances in Linux

To install the latest stable version of Glances, just enter the following command line:

$ curl -L https://bit.ly/glances | /bin/bash
or
$ wget -O- https://bit.ly/glances | /bin/bash

2. Sarg – Squid Bandwidth Monitoring

Sarg (Squid Analysis Report Generator) is a free and open-source tool that acts as a monitoring tool for your Squid proxy server, it creates reports about your Squid proxy server users, IP addresses, the sites they visit, and some other information.

Monitor Squid Proxy Logs
Sarg Monitors Squid Logs

For installation, read our article – Install Sarg “Squid Bandwidth Monitoring” Tool in Linux

3. Apache Status Monitoring

The mod_status is an Apache server module that allows you to monitor the workers’ status of the Apache server. It generates a report in an easy-to-read HTML format. It shows you the status of all the workers, how much CPU each one using, what requests are currently handled, and the number of working and not working workers.

Apache Monitoring in Linux
Apache Status Monitoring

For installation, read our article – How to Monitor Apache Web Server Load and Page Statistics

4. Monit – Linux Process and Services Monitoring

Monit is a nice program that monitors your Linux and Unix server, it can monitor everything you have on your server, from the main server (Apache, Nginx..) to files permissions, files hashes, and web services. Plus a lot of things.

Monit - Linux Server Monitoring
Monit – Linux Server Monitoring

Install Monit in Linux

To install the stable version of Monit, just enter the following command line:

$ sudo apt install monit          [On Debian, Ubuntu and Mint]
$ sudo yum install monit          [On RHEL/CentOS/Fedora and Rocky Linux/AlmaLinux]
$ sudo emerge -a app-admin/monit  [On Gentoo Linux]
$ sudo pacman -S monit            [On Arch Linux]
$ sudo zypper install monit       [On OpenSUSE]    

5. Sysstat – All-in-One System Performance Monitoring

Another useful monitoring tool for your Linux system is Sysstat – is not a real command, in fact, it’s just the name of the project, Sysstat, in fact, is a package that includes many performance monitoring tools like iostat, sadf, pidstat beside many other tools which shows you many statistics about your Linux OS.

Sysstat All-in-One Linux Monitoring
Sysstat: Linux Statistics Monitoring
Features of Sysstat
  • It is available in all modern Linux distribution repositories by default.
  • Ability to create statistics about RAM, CPU, and SWAP usage. Besides the ability to monitor Linux kernel activity, NFS server, Sockets, TTY, and filesystems.
  • Ability to monitor input & output statistics for devices, tasks.. etc.
  • Ability to output reports about network interfaces and devices, with support for IPv6.
  • Sysstat can show you the power statistics (usage, devices, the fans’ speed.. etc) as well.
  • Many other features…

Install Sysstat in Linux

To install the stable version of Sysstat, just enter the following command line:

$ sudo apt install sysstat          [On Debian, Ubuntu and Mint]
$ sudo yum install sysstat          [On RHEL/CentOS/Fedora and Rocky Linux/AlmaLinux]
$ sudo emerge -a app-admin/sysstat  [On Gentoo Linux]
$ sudo pacman -S sysstat            [On Arch Linux]
$ sudo zypper install sysstat       [On OpenSUSE]    

For usage and examples, read our article – 20 Useful Commands of Sysstat

6. Icinga – Next Generation Server Monitoring

Unlike the other tools, Icinga is a network monitoring program, it shows you many options and information about your network connections, devices, and processes, it’s a very good choice for those who are looking for a good tool to monitor networking stuff.

Icinga - Linux Network Monitoring
Icinga – Linux Network Monitoring
Features of Icinga
  • Icinga is also free and open-source.
  • Very functional in monitoring everything you may have in networking.
  • Support for MySQL and PostgreSQL is included.
  • Real-time monitoring with A nice web interface.
  • Very expandable with modules and extensions.
  • Icinga supports applying services and actions to hosts.
  • A lot more to discover…

For installation, read our article – How to Install Icinga Server Monitoring Tool in Linux

7. Observium – Network Management and Monitoring

Observium is also a network monitoring tool, it was designed to help you manage your network of servers easily, there are 2 versions of it; Community Edition which is free and open-source, and the Commercial version which costs £1,000/year.

Linux Network Monitoring
Observium: Linux Network Monitoring
Features of Observium
  • Written in PHP with MySQL database support.
  • Has a nice web interface to output information and data.
  • Ability to manage and monitor hundreds of hosts worldwide.
  • The community version from it is licensed under the QPL license.
  • Works on Windows, Linux, FreeBSD, and more.

For installation, read our article – Install Observium Network Management and Monitoring Tool in Linux

8. Web VMStat – System Statistics Monitoring

Web VMStat is a very simple web application programmer, that provides real-time system information usage, from CPU to RAM, Swap, and input/output information in html format.

Web VMStat Tool for Linux
Web VMStat Tool for Linux

For installation, read our article – Web VMStat: A Real-Time System Statistics Tool for Linux

9. PHP Server Monitoring

Unlike the other tools on this list, PHP Server Monitoring is a web script written in PHP that helps you to manage your websites and hosts easily, it supports MySQL database and is released under GPL 3 or later.

PHP Server Monitor
PHP Server Monitor
Features
  • A nice web interface.
  • Ability to send notifications to you via Email & SMS.
  • Ability to view the most important information about CPU and RAM.
  • A very modern logging system to log connection errors and emails that are sent.
  • Support for cronjob services to help you monitor your servers and websites automatically.

For installation, read our article – Install PHP Server Monitoring Tool in Linux

10. Linux Dash – Linux Server Performance Monitoring

From its name, “Linux Dash” is a web dashboard that shows you the most important information about your Linux systems such as RAM, CPU, file system, running processes, users, and bandwidth usage in real-time, it has a nice GUI and it’s free & open-source.

Linux Dash Tool
Linux Dash Tool

For installation, read our article – Install Linux Dash (Linux Performance Monitoring) Tool in Linux

11. Cacti – Network and System Monitoring

Cacti is nothing more than a free & open-source web interface for RRDtool, it is used often to monitor the bandwidth using SNMP (Simple Network Management Protocol), and it can be used also to monitor CPU usage.

Cacti Network Monitoring
Cacti Network Monitoring

For installation, read our article – Install Cacti Network and System Monitoring Tool in Linux

12. Munin – Network Monitoring

Munin is also a web interface GUI for RRDtool, it was written in Perl and licensed under GPL, Munin is a good tool to monitor systems, networks, applications, and services.

It works on all Unix-like operating systems and has a nice plugin system; there are 500+ different plugins available to monitor anything you want on your machine. A notifications system is available to send messages to the administrator when there’s an error or when the error is resolved.

Munin Network Monitoring
Munin Network Monitoring

For installation, read our article – Install Munin Network Monitoring Tool in Linux

13. Wireshark – Network Protocol Analyzer

Also, unlike all the other tools on our list, Wireshark is an analyzer desktop program that is used to analyze network packets and monitor network connections. It’s written in C with the GTK+ library and released under the GPL license.

Wireshark Network Analyzer
Wireshark Network Analyzer
Features
  • Cross-platform: it works on Linux, BSD, Mac OS X, and Windows.
  • Command-line support: there’s a command-line-based version from Wireshark to analyze data.
  • Ability to capture VoIP calls, USB traffic, and network data easily to analyze it.
  • Available in most Linux distribution repositories.

For installation, read our article – Install Wireshark – Network Protocol Analyzer Tool in Linux

These were the most important tools to monitor your Linux/Unix machines, of course, there are many other tools, but these are the most famous. Share your thoughts with us in the comments: What tools & programs do you use to monitor your systems? Have you used any of the tools on this list? What do you think about them?

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13 thoughts on “14 Useful Performance and Network Monitoring Tools for Linux”

  1. We have used Munin in the past and it was good. Some elements were a bit complicated. We searched for alternatives and two newer, very simple and comprehensive tools to check out is uptrends and cloudradar (current user).

    Reply
  2. A good one.
    One more suggestion you might want to consider for monitoring tools is AgentlessMonitor from AppPerfect which covers most of the aspects of monitoring like JAVA / J2EE application monitoring, server monitoring, database monitoring, transaction monitoring, network monitoring, log monitoring and system monitoring and last, but not the least is available for free.

    Not only do we provide the product, they also provide you the option to have it custom made for you keeping in mind your needs and cost constraints.

    It is very easy to use and generates automated alerts in case of exceeding limits or rules violation and also needs no bulky agent to be installed.

    Reply
  3. I think SeaLion (https://sealion.com/) is worth a mention here. It’s not as popular as Nagios or Zabbix but is a very powerful tool. I currently use this tool to keep an eye on my servers and it’s very impressive.
    It’s very simple to install and use, has a neat and clean UI. It also lets you add your own commands and has a feature to get all the updates in a single mail as a daily digest.

    Reply
  4. Again a great article !!

    Thanks,

    Also I am looking forward for an article related with some specific Opensource tools/softwares to analyse Apache Error and Access logs

    More better will be to know a Open Source tool to analyse MySQL logs in realtime i.e. If someone have Webfrontend based on a Customer Java program but uses MySQL for most of the operations then a tool which can show which MySQL query was executed during an operation performed by the end user

    Reply
    • @Bienlac,
      Do you have any monitoring tool for samba in your mind? Please tell us so that we can write a detailed artilce on the requested topic..

      Reply
  5. A great list, but i think that I can add one more tool to the list. This tool is Anturis and it is a cloud-based tool with all in one character and which can monitor the whole company IT infrastructure and all kinds of servers at the same time. This is an agent tool which checks all the essential metrics like CPU, Memory, Disk, Swap and Network Interface usage, OS Processes etc.

    Reply

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