Install and modify Apache2 port in Ubuntu

Linux: Ubuntu13.04 because the local machine has Nginx, there is no need to install Apache2. However, to learn how to use icinga today, let's take a look at apache2. Now we are familiar with icinga and use Nginx to replace Apache2. Installation is simple: apt-getinstallapache2 and Automatic startup failed, because my Nginx occupies port 80 and port 443. Whereisapach

Linux: Ubuntu 13.04

Because the local machine has Nginx, there is no need to install Apache2.

However, to learn how to use icinga today, let's take a look at apache2. Now we are familiar with icinga and use Nginx to replace Apache2.

Installation is simple:

Apt-get install apache2

Then auto start fails because Nginx occupies port 80 and port 443.

Find the/etc/apache2 directory through whereis apache2

Okay. Open the ports. conf file in this directory,

Change all port 80 to 81,443.

Then, read the file comment and say the/etc/apache2/sites-enabled/000-default file is required. After the file is opened

Set

Modify it to 81, and then you can see that the root directory is under/var/www.

Check the index.html file in/var/www/directory.

It works!

This is the default web page for this server.

The web server software is running but no content has been added, yet.

Restart apache2 now

Service apache2 restart

* Restarting web server apache2 apache2: cocould not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
... Waiting apache2: cocould not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
[OK]

You can open the/etc/apache2/apache2.conf file.

Add the previous sentence:

ServerName localhost

After restarting again, the error disappears.

Open the webpage and enter localhost: 81address. The index.html page is displayed.

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