ubuntu modify the apache port number

first step

sudo vi /etc/apache2/ports.conf Modify the listening port and host port 8080

NameVirtualHost *:8080
Listen 8080

The second step

sudo vi /etc/apache2/sites-available/default As long as you can modify the port of virtualHost:

<VirtualHost *:8080>

third step

Apache2 restart

sudo service apache2 stop
sudo service apache2 start

or

sudo service apache2 restart