A powerful tool for mastering Linux system monitoring

As a Linux system administrator, do you often need to monitor the performance of the system so that problems can be discovered and solved in a timely manner? If so, then you definitely need to know some Linux system monitoring tools. Today, we will introduce you to some commonly used Linux system monitoring tools so that you can easily master system monitoring skills.

1. iotop

If you want to know how much of your precious I/O resources are being used by certain processes, use iotop.

The iostat command also checks the I/O status, but it monitors the I/O situation at the system level, while iotop monitors the process level, and can monitor the I/O information used by which process.

2. htop

htop is an enhanced version of the traditional top, with better visual effects and easier to understand the current system status.

You can clearly see the usage of each core of the CPU, which is not as obscure as top.

Similarly, the memory usage is also very clear.

Not only does it have traditional percentage data, it also uses bar charts to display CPU and memory metrics. The readability is much better than top.

And the operation is more convenient. For example, you can terminate a process without entering the process ID, and you can also terminate multiple processes at one time.

htop also has many convenient operations, and it is recommended to use it instead of top.

3. IPTraf

IPTraf is a powerful tool for diagnosing network problems. It can monitor all network traffic of the system.

You can set filters for specified ports and transmission types.

IPTraf is like a lightweight Wireshark.

You can do many detailed operations through IPTraf, such as statistical breakdown of traffic based on overall packet size:

tcpdump or tshark have similar functions to IPTraf, but IPTraf is more convenient to use, has menus, and is easy to operate.

4. Monit

Monit is a very flexible tool with many configuration methods and supports different types of thresholds and performance alarms.

Monit allows monitoring of processes, ports, files and other targets, and can set dynamic alarm modes.

For example, you want to monitor a process to ensure that it is running. If the process hangs, restart it. If the process hangs multiple times, it will not restart, but will send an alarm. Such needs can be easily solved through Monit.

Monit also has a lightweight web interface:

Whether you are managing one server or multiple servers, Monit is a powerful monitoring tool that is extremely simple to use and very efficient.

As one of the commonly used operating systems, Linux system is highly praised by the majority of users for its stability and security. However, even the most stable systems have potential risks of failure. Therefore, in daily work, the importance of Linux system monitoring tools cannot be ignored. This article introduces some common Linux system monitoring tools, hoping to help Linux system administrators better discover and solve problems and ensure the stability and security of the system.

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