How to install apache on ubuntu

There are two ways to install Apache on Ubuntu: 1. Use the packaging service of the development package, such as using the apt-get command; 2. Build Apache from the source code.

Method 1: Use the packaging service of the development package - apt-get

Install apache and enter the command in the command line terminal:

$ sudo apt-get install apache2

After the installation is complete, restart the apache service and enter the following command in the command line terminal:

$ sudo /etc/init.d/apache2 restart

Possible problems 1: NameVirtualHost *:80 has no VirtualHosts

The reason for the above problem: multiple NameVirtualHosts are defined, so just comment out NameVirtualHost *:80 in /etc/apache2/ports.conf.

Possible problem 2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName

Cause: According to the prompt, it cannot be reliably determined Determine the effective domain name of the server and use 127.0.1.1 as the server domain name. Therefore, in the following tests, 127.0.1.1 should be used instead of 127.0.0.1!

Solution:

$ vim /etc/apache2/httpd.conf, add in the file:

ServerName localhost:80, restart apache2 again, you can use 127.0.0.1 to access the web server!

Test:

Enter http://localhost or http://127.0.0.1 in the browser. If you see It works!, it means that Apache has been successfully installed. , the default installation of Apache will create a directory named www under /var. This is the Web directory. All Web files that must be accessible through the browser must be placed in this directory.

You may encounter problems during the test: 404 not found

Cause: The server address used by apache2 is not 127.0.0.1. According to the previous analysis, the possible IP is 127.0.1.1. Access http://127.0.1.1 is enough.

If you feel you no longer need apache, you can uninstall it:

1. Delete apache

Enter in the command line:

$ sudo apt -get --purge remove apache-common

$ sudo apt-get --purge remove apache

2. Find the configuration files that have not been deleted and delete them together

Code:

$ sudo find /etc -name "*apache*" |xargs rm -rf

$ sudo rm -rf /var/www

$sudo rm - rf /etc/libapache2-mod-jk

3. Delete the association so that you can reinstall it with apt-get install apache2 again

#dpkg -l |grep apache2|awk '{ print $2}'|xargs dpkg -P

Method 2: Build Apache from source

---------------- ----------------------Dividing line-------------------------- ------------

apache2 [warn] NameVirtualHost *:80 has no VirtualHosts solution

Error:[warn] NameVirtualHost *:80 has no VirtualHosts

Cause: Multiple NameVirtualHosts are defined

Solution: Previous versions of Ubuntu were defined in /etc/apache2/sites-available/default, and after 8.04 in /etc/ apache2/ports.conf

So you can comment out NameVirtualHost *:80 in /etc/apache2/ports.conf

The essence of this problem is that if the domain name is not defined, a port can only Corresponding to a virtual host, changing NameVirtualHost *:80 to other ports can also solve the problem

If there are multiple different domain names, the same port can also be used

More Apache related technologies Article, please visit the Apache Tutorial column to learn!

The above is the detailed content of How to install apache on ubuntu. For more information, please follow other related articles on the PHP Chinese website!