myVesta

Posted: **Wed Nov 27, 2024 4:29 pm**

This guide provides step-by-step instructions to install Atop, configure it to log at a custom interval, and set up automatic log file cleanup.

Installation

Update your package lists and install Atop:

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apt update
apt install -y atop

Configuring Atop

We will set the logging interval to 10 seconds.

Update the Atop systemd service file

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sed -i “s|Environment=LOGINTERVAL=.*|Environment=LOGINTERVAL=10|g” /lib/systemd/system/atop.service
sed -i “s|${LOGINTERVAL}|10|g” /lib/systemd/system/atop.service
if ! grep -q ‘LOGINTERVAL’ /lib/systemd/system/atop.service; then
INIVAL=‘Environment=“LOGINTERVAL=600”’
sed -i “s|Service|[Service]\n$INIVAL|g” /lib/systemd/system/atop.service
fi

Update the Atop default configuration

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sed -i “s#LOGINTERVAL=.*#LOGINTERVAL=10#g” /etc/default/atop
if ! grep -q ‘LOGINTERVAL’ /etc/default/atop; then
echo ‘LOGINTERVAL=10’ >> /etc/default/atop
fi

Reload and restart Atop

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systemctl daemon-reload
systemctl restart atop

Setting Up Automatic Log Cleanup

Add a cron job to delete Atop logs older than 2 days. This job runs daily at 4:09 AM:

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crontab -l | { cat; echo “9 4 * * * find /var/log/atop/ -mtime +2 -delete”; } | crontab -

Viewing Logs at a Specific Time

To view Atop logs for a specific minute, for example, 13:40:

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atop -Af1 -b 13:40 -r /var/log/atop/atop_20241126

Use ‘t’ to go forward in time.
Use ‘T’ to go back in time.
To analyze specific times, press ‘b’ and enter the desired time.

myVesta

Configuring atop with custom log Interval and automated log cleanup

Configuring atop with custom log Interval and automated log cleanup