Apache command cheatsheet

Find DB Version

mariadb --version

mysql --version

When your running your own lamp on vps having a cheatsheet like this for Apache may come in handy. Especially when the rubber hits the road.

Stop your web server

sudo systemctl stop apache2

Start the web server when it is stopped, type:

sudo systemctl start apache2

Stop and then start the service again, type:

sudo systemctl restart apache2

Reload without dropping connections.

sudo systemctl reload apache2

Re-enable the service to start up at boot, type:

sudo systemctl enable apache2

Enable the file with the a2ensite tool:

sudo a2ensite your_domain.conf

Disable the default site defined in 000-default.conf:

sudo a2dissite 000-default.conf

Test for configuration errors:

sudo apache2ctl configtest

REBOOT reboot a server from the command line, run:

sudo shutdown -r now

By default, Apache is configured to start automatically when the server boots. If this is not what you want, disable this behavior by typing:

sudo systemctl disable apache2

Query the state of apache processes

sudo systemctl status apache2.service -l --no-pager

Check apache for config errors

sudo apachectl configtest

Search apache error log

This will only search 2 lines

sudo tail -n 2 /var/log/apache2/error.log

View apache error log

vim /var/log/apache2/error.log

Troubleshooting

Apache not starting

Find out what the problem is:

sudo apachectl configtest

Whenever i delete certificates and then restart the server. then apache fails to start up because some of the certificate files still need to be deleted. All the details for this are output in the configtest log.