Linux Server Monitoring with SAR & GNUPLOT | Monitor Linux Server Performance | RH442 Training

The sar command can provide detailed system metrics on just about every aspect of system performance. You can query it on as as-needed basis or set it up to provide daily reports.

Gnuplot then can be used to generate two or three dimensional plots of data. Which makes it easy to do analysis. It was originally created to allow scientists and students to visualize mathematical functions and data interactively, but has grown to support many non-interactive uses such as web scripting.

We will learn how to use sar to capture load on the server to a data file. We can simulate load using either dd or yes utilities, which are easy to use. Finally we will use gnuplot in batch mode to create a file to develop a graph of the load.

These are must known skills for every Linux server administrator.

Social Media - @networknuts

Timeline of video:
00:00 - Introduction to sar and gnuplot

01:20 - Installing sar
04:15 - Putting load on CPU using dd
05:15 - Putting load on CPU using yes
07:38 - Collecing sar report to file
08:45 - Analyize sar data
11:35 - Installing gnuplot
12:35 - Creating gnuplot data file
16:06 - Generate gnuplot graph

[viraldesai]

Can you make a video on performance issue due to disk IO ?