Apache2 Won't Start: (98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:80

Question

I've been trying to use Apache2 to put an SSL certificate on my Ubuntu Server 18.04.4 LTS for Nextcloud, and I can't even get a far as to start Apache. I keep getting this error:

Error Picture

I've looked up solutions to this and found about a hundred of them, each of them not working, or I just don't know how to solve it properly.

Help would be much appreciated, I've been suck on this for a few days now. :(

Solution

there is already something bound to that port, that's why apache complains.

Try this to find out what is using port 80/tcp:

# ss --listening --tcp --numeric --processes

you should get a list of open listening sockets with the local address:port combination and the process that has opened each of them. Find out which one has opened port 80, stop that process and start apache again, it should work.

Comments

[Beto Damian]

The service is "httpd", and I've seen it before. It's affiliated with Nextcloud. How would I stop it, or should I stop it?

[natxo asenjo]

then you should restart httpd, nextcloud uses it and it's already started

[vidarlo]

How does this answer the question?

[another victim of the mouse]

@vidarlo it's the instructions for adding SSL to Nextfloud using apache2.

[vidarlo]

Yes. But how does it answer the question given the error message the user is struggling with?

[another victim of the mouse]

he's specifically said he's be trying to put "Apache2 to put an SSL certificate on my Ubuntu Server 18.04.4 LTS for Nextcloud."