Ubuntu error with apache: (98)Address already in use

Question

I am getting this error when I try to start Apache in Ubuntu.

 (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80  no listening sockets available, shutting down  Unable to open logs  Action 'start' failed. 

I have this in my ports.conf

NameVirtualHost *:80 Listen 80 

This is my vhost file

<VirtualHost *:80>           ServerAdmin [email protected]           ServerName rails.server.com           # ServerAlias           DocumentRoot /var/www/sample_app/current/public           ErrorLog /var/www/sample_app/error.log            RailsEnv production         <Directory "/var/www/sample_app/current/public">           Options Indexes FollowSymLinks MultiViews           Order allow,deny           Allow from all         </Directory> </VirtualHost> 

What am I missing?

Answer 1

It seems port 80 is already taken. Use another port or try netstat (grep the result to select only the row with value 80 in it), ps and kill to see what application occupies the port and shut it down.

Answer 2

netstat -ltnp | grep :80 

This would return the following:

tcp6 0 0 :::80 :::* LISTEN 1047/apache2

Then run the following command:

sudo kill -9 1047 

(1047 - pid no)

(the pid that appears on your particular instance.)

Restart Apache.

sudo service apache2 restart 

Reference to Ubuntu Forums.