Setting up logs on conf
sample.conf
<VirtualHost *:80>
DocumentRoot /var/www
CustomLog ${APACHE_LOG_DIR}/access.log combined
ErrorLog ${APACHE_LOG_DIR}/error.log
# Possible values include: debug, info, notice, warn, error, crit, alert, emerg.
LogLevel warn
</VirtualHost>
Viewing the access and error logs
sudo tail -f -n 200 /var/log/apache2/access.log
sudo tail -f -n 200 /var/log/apache2/error.log