Server monitoring is crucial for businesses to ensure different systems are running well.
As your business grows, your resources, workforce, services, systems, and IT infrastructure also begins to grow. Hence, a performance monitoring solution becomes important to observe the health, activities, and capability of your servers.
In this article, I will discuss multiple light-weight free-to-use tools to monitor servers.
Every IT admin faces these challenges – server crash, slow applications, unexpected downtime, configuring dependencies, troubleshooting memory leaks, etc. To solve these problems, IT monitoring software/applications are required.
Nagios and Zabbix are the most popular monitoring tools for the complete infrastructure. Using these tools, you can monitor almost everything – server performance, network performance, protocols, operating systems, applications, websites, etc.
But if your infrastructure is not big enough or your requirement is just to monitor server performance, rather than going for a full-fledged end-to-end tool, you can go for light-weight self-hosted software to monitor servers.
% Utilization: This section shows the visualization of processor, memory, and storage in the last 20 seconds
Ward: It shows the uptime since the last boot time on Linux and hard resets time on Windows
To run Ward, you can create a jar file of this project and run it or download the latest release jar file and run it. You can also launch Ward inside a docker container.
Netdata is a free, open-source software for real-time monitoring of systems and applications. It can run on Linux, FreeBSD, macOS, docker containers, IoT devices.
You can install the Netdata agent on your system, application, or container, and it will give all the performance and health information in real-time.
You can select the chart shown above of CPU in yellow color by dragging through the chart and zoom in/out using SHIFT + mouse wheel, and that area will get displayed in detail. It can easily integrate with other tools like Prometheus, AWS Kinesis, Graphite, MongoDB, etc.
Quick and simple installation
Provides data in real-time
Capable of monitoring 1000’s of metrics per node
Can collect up to 10000 metrics per server automatically on its own
Stores historical data of every single second
Very easy to understand presentation of the dashboard
Identifies anomalies super fact using modern metrics visualizer
No dedicated resource required for running Netdata
Prometheus server periodically collects all the data, Prometheus becomes the data source for Grafana, and Grafana visualizes all the metrics on the dashboard. You even have the option in Grafana to query on the metrics getting visualized.
It is worth trying out this combo!
Glances is a cross-platform monitoring tool written in Python. It supports only python 2.7 or python >=3.4. It uses python libraries (psutil) to collect all the system information.
Depending on the size of the interface (mobile, web UI, terminal), the information shown on the UI will change dynamically.
Remote monitoring available via terminal, Web UI or API (XML-RPC server and a RESTful JSON)
Exportable stats in a file or a database
Easy to install with just a single command – pip install glances
Docker container available for Glances
In case you require better visualization, you can export the data from Glances to InfluxDB and visualize this data on Grafana.
Linux Dash is a web dashboard for Linux systems. The UI of Linux Dash is built on Angular, and several languages support the server-side.
The system status tab shows the information on RAM usage, CPU average load, CPU utilization, CPU and RAM processes, Disc partitions, Swap usage, CPU temperature, and Docker processes.
It also gives network-level, account-level, and application-level information.
Linux Dash features:
Supports WebSocket also to give real-time system data visualization
Drag and Drop UI
Customizable screens (minimize, expand, adjust) on the dashboard
Server-side implementation available in several languages (Node.js, Python, Go, PHP)
Conky is a system monitor originally written for X (window system). It currently works on a bunch of different platforms. You can run it on X, Linux, Mac OS (using X quartz), and on most BSDs.
It displays information using simple text or busing progress bar and graph widgets using different fonts and colors.
300+ built-in objects to show system status
Very simple user interfaces
Supports music players such as Audacious, MPD
Supports POP3 and IMAP
Can display any information using scripts and external programs
Monitoring the performance of your server is indeed necessary. If not performed properly, it can create performance and uptime issues that may hinder your business. But no need to worry if you utilize a monitoring software solution to ensure your server is performing well.