In this tutorial we will explain how to install “sar” sysstat on Ubuntu and Debian Server

Installation of sysstat

apt-get install sysstat -y

Run sysstat

sar -q

If you get this error :

Cannot open /var/log/sysstat/sa15: No such file or directory·

You need to enable sysstat in the config file

nano /etc/default/sysstat

...
# Should sadc collect system activity informations? Valid values
# are "true" and "false". Please do not put other values, they
# will be overwritten by debconf!
ENABLED="true"
...

Restart the service

service sysstat restart