How To Fix Error: “Please check if data collecting is enabled”

After installing sysstat package and running sar command you may have error message: “Cannot open /var/log/sysstat/sa18: No such file or directory. Please check if data collecting is enabled”. I will show how to fix that error on Ubuntu and CentOS Linux.

Please check if data collecting is enabled

Fix: Please check if data collecting is enabled in CentOS / RedHat

To fix that error in CentOS we need restart the sysstat service, and the data will start collecting

# service sysstat restart

Now run again sar command, if service start collects data you will see something like this:

sar command

Fix: Please check if data collecting is enabled in Ubuntu / Debian

To fix in Ubuntu we need do one more step

1. Edit sysstat config

Open and edit /etc/default/sysstat config file and change row from ENABLED=”false” to ENABLED=”true

edit default sysstat

2. Restart sysstat service

Now restart sysstat service:

$ sudo service sysstat restart

Run sar command, if service start collects data you will see command execution result without error.

sar command

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