How To Install Linux, Apache, MySQL, PHP (LAMP) Stack on Ubuntu

Introduction

A “LAMP” stack is a group of open source software that is typically installed together in order to enable a server to host dynamic websites and web apps written in PHP. This term is an acronym which represents the Linux operating system with the Apache web server. The site data is stored in a MySQL database, and dynamic content is processed by PHP.

In this guide, you’ll set up a LAMP stack on an Ubuntu 22.04 server. These steps remain consistent for Ubuntu v18.04 and above.

Prerequisites

In order to complete this tutorial, you will need to have a server running Ubuntu, along with a non-root user with sudo privileges and an active firewall. For guidance on how to set these up, please choose your distribution from this list and follow our Initial Server Setup Guide.

Setup a LAMP Stack on Ubuntu

1. Install Apache & Update Firewall
2. Install MySQL Database
3. Install PHP
4. Setup Virtual Webhost
5. Test PHP Processing
6. Test Database Connection

Step 1 — Installing Apache and Updating the Firewall

The Apache web server is among the most popular web servers in the world. It’s well documented, has an active community of users, and has been in wide use for much of the history of the web, which makes it a great choice for hosting a website.

Start by updating the package manager cache. If this is the first time you’re using sudo within this session, you’ll be prompted to provide your user’s password to confirm you have the right privileges to manage system packages with apt:

sudo apt update

Then, install Apache with:

sudo apt install apache2

You’ll be prompted to confirm Apache’s installation. Confirm by pressing Y, then ENTER.

Once the installation is finished, you’ll need to adjust your firewall settings to allow HTTP traffic. Ubuntu’s default firewall configuration tool is called Uncomplicated Firewall (UFW). It has different application profiles that you can leverage. To list all currently available UFW application profiles, execute this command:

sudo ufw app list

Output
Available applications:
  Apache
  Apache Full
  Apache Secure
  OpenSSH

Here’s what each of these profiles mean:

• Apache: This profile opens only port 80 (normal, unencrypted web traffic).
• Apache Full: This profile opens both port 80 (normal, unencrypted web traffic) and port 443 (TLS/SSL encrypted traffic).
• Apache Secure: This profile opens only port 443 (TLS/SSL encrypted traffic).

For now, it’s best to allow only connections on port 80, since this is a fresh Apache installation and you don’t yet have a TLS/SSL certificate configured to allow for HTTPS traffic on your server.

To only allow traffic on port 80, use the Apache profile:

sudo ufw allow in "Apache"

Verify the change with:

sudo ufw status

Output
Status: active

To                         Action      From
--                         ------      ----
OpenSSH                    ALLOW       Anywhere
Apache                     ALLOW       Anywhere
OpenSSH (v6)               ALLOW       Anywhere (v6)
Apache (v6)                ALLOW       Anywhere (v6)

Traffic on port 80 is now allowed through the firewall.

You can do a spot check right away to verify that everything went as planned by visiting your server’s public IP address in your web browser (view the note under the next heading to find out what your public IP address is if you do not have this information already):

http://your_server_ip

The default Ubuntu Apache web page is there for informational and testing purposes. Below is an example of the Apache default web page for Ubuntu 22.04:

If you can view this page, your web server is correctly installed and accessible through your firewall.

How To Find your Server’s Public IP Address

If you do not know what your server’s public IP address is, there are a number of ways to find it. Usually, this is the address you use to connect to your server through SSH.

There are a few different ways to do this from the command line. First, you could use the iproute2 tools to get your IP address by typing this:

ip addr show ens3 | grep inet | awk '{ print $2; }' | sed 's/\/.*$//'

This will give you two or three lines back. They are all correct addresses, but your computer may only be able to use one of them, so feel free to try each one.

An alternative method is to use the curl utility to contact an outside party to tell you how it sees your server. This is done by asking a specific server what your IP address is:

curl http://icanhazip.com

Whichever method you choose, type in your IP address into your web browser to verify that your server is running.

Step 2 — Installing MySQL

Now that you have a web server up and running, you need to install the database system to be able to store and manage data for your site. MySQL is a popular database management system used within PHP environments.

Again, use apt to acquire and install this software:

sudo apt install mysql-server

When prompted, confirm installation by typing Y, and then ENTER.

When the installation is finished, it’s recommended that you run a security script that comes pre-installed with MySQL. This script will remove some insecure default settings and lock down access to your database system.

Output
 ... Failed! Error: SET PASSWORD has no significance for user 'root'@'localhost' as the authentication method used doesn't store authentication data in the MySQL server. Please consider using ALTER USER instead if you want to change authentication parameters.

New password:

sudo mysql

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';

exit

Start the interactive script by running:

sudo mysql_secure_installation

This will ask if you want to configure the VALIDATE PASSWORD PLUGIN.

Answer Y for yes, or anything else to continue without enabling.

VALIDATE PASSWORD PLUGIN can be used to test passwords
and improve security. It checks the strength of password
and allows the users to set only those passwords which are
secure enough. Would you like to setup VALIDATE PASSWORD plugin?

Press y|Y for Yes, any other key for No:

If you answer “yes”, you’ll be asked to select a level of password validation. Keep in mind that if you enter 2 for the strongest level, you will receive errors when attempting to set any password which does not contain numbers, upper and lowercase letters, and special characters:

There are three levels of password validation policy:

LOW    Length >= 8
MEDIUM Length >= 8, numeric, mixed case, and special characters
STRONG Length >= 8, numeric, mixed case, special characters and dictionary              file

Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 1

Regardless of whether you chose to set up the VALIDATE PASSWORD PLUGIN, your server will next ask you to select and confirm a password for the MySQL root user. This is not to be confused with the system root. The database root user is an administrative user with full privileges over the database system. Even though the default authentication method for the MySQL root user doesn’t involve using a password, even when one is set, you should define a strong password here as an additional safety measure.

If you enabled password validation, you’ll be shown the password strength for the root password you just entered and your server will ask if you want to continue with that password. If you are happy with your current password, enter Y for “yes” at the prompt:

Estimated strength of the password: 100
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y

For the rest of the questions, press Y and hit the ENTER key at each prompt. This will remove some anonymous users and the test database, disable remote root logins, and load these new rules so that MySQL immediately respects the changes you have made.

When you’re finished, test whether you’re able to log in to the MySQL console by typing:

sudo mysql

This will connect to the MySQL server as the administrative database user root, which is inferred by the use of sudo when running this command. Below is an example output:

Output
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 8.0.28-0ubuntu4 (Ubuntu)

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

To exit the MySQL console, type:

exit

Notice that you didn’t need to provide a password to connect as the root user, even though you have defined one when running the mysql_secure_installation script. That is because the default authentication method for the administrative MySQL user is unix_socket instead of password. Even though this might seem like a security concern, it makes the database server more secure because the only users allowed to log in as the root MySQL user are the system users with sudo privileges connecting from the console or through an application running with the same privileges. In practical terms, that means you won’t be able to use the administrative database root user to connect from your PHP application. Setting a password for the root MySQL account works as a safeguard, in case the default authentication method is changed from unix_socket to password.

For increased security, it’s best to have dedicated user accounts with less expansive privileges set up for every database, especially if you plan on having multiple databases hosted on your server.

Your MySQL server is now installed and secured. Next, you’ll install PHP, the final component in the LAMP stack.

Step 3 — Installing PHP

You have Apache installed to serve your content and MySQL installed to store and manage your data. PHP is the component of our setup that will process code to display dynamic content to the final user. In addition to the php package, you’ll need php-mysql, a PHP module that allows PHP to communicate with MySQL-based databases. You’ll also need libapache2-mod-php to enable Apache to handle PHP files. Core PHP packages will automatically be installed as dependencies.

To install these packages, run the following command:

sudo apt install php libapache2-mod-php php-mysql

Once the installation is finished, run the following command to confirm your PHP version:

php -v

Output
PHP 8.1.2 (cli) (built: Mar  4 2022 18:13:46) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.1.2, Copyright (c) Zend Technologies
    with Zend OPcache v8.1.2, Copyright (c), by Zend Technologies

Changing Apache’s Directory Index (Optional)

In some cases, you’ll want to modify the way that Apache serves files when a directory is requested. Currently, if a user requests a directory from the server, Apache will first look for a file called index.html. We want to tell the web server to prefer PHP files over others, to make Apache look for an index.php file first. If you don’t do that, an index.html file placed in the document root of the application will always take precedence over an index.php file.

To make this change, open the dir.conf configuration file in a text editor of your choice. Here, we’ll use nano:

sudo nano /etc/apache2/mods-enabled/dir.conf

It will look like this:

<IfModule mod_dir.c>
    DirectoryIndex index.html index.cgi index.pl index.php index.xhtml index.htm
</IfModule>

Move the PHP index file (highlighted above) to the first position after the DirectoryIndex specification, like this:

<IfModule mod_dir.c>
    DirectoryIndex index.php index.html index.cgi index.pl index.xhtml index.htm
</IfModule>

When you are finished, save and close the file by pressing CTRL+X. Confirm the save by typing Y and then hit ENTER to verify the file save location.

After this, restart the Apache web server in order for your changes to be recognized. You can do that with the following command:

sudo systemctl restart apache2

You can also check on the status of the apache2 service using systemctl:

sudo systemctl status apache2

Sample Output
● apache2.service - The Apache HTTP Server
   Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor preset: enabled)
  Drop-In: /lib/systemd/system/apache2.service.d
           └─apache2-systemd.conf
   Active: active (running) since Thu 2021-07-15 09:22:59 UTC; 1h 3min ago
 Main PID: 3719 (apache2)
    Tasks: 55 (limit: 2361)
   CGroup: /system.slice/apache2.service
           ├─3719 /usr/sbin/apache2 -k start
           ├─3721 /usr/sbin/apache2 -k start
           └─3722 /usr/sbin/apache2 -k start

Jul 15 09:22:59 ubuntu1804 systemd[1]: Starting The Apache HTTP Server...
Jul 15 09:22:59 ubuntu1804 apachectl[3694]: AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1. Set the 'ServerName' di
Jul 15 09:22:59 ubuntu1804 systemd[1]: Started The Apache HTTP Server.

Press Q to exit this status output.

Installing PHP Extensions (Optional)

To extend the functionality of PHP, you have the option to install some additional modules. To see the available options for PHP modules and libraries, pipe the results of apt search into less, a pager which lets you scroll through the output of other commands:

apt search php- | less

Use the arrow keys to scroll up and down, and press Q to quit.

The results are all optional components that you can install. It will give you a short description for each:

bandwidthd-pgsql/bionic 2.0.1+cvs20090917-10ubuntu1 amd64
  Tracks usage of TCP/IP and builds html files with graphs

bluefish/bionic 2.2.10-1 amd64
  advanced Gtk+ text editor for web and software development

cacti/bionic 1.1.38+ds1-1 all
  web interface for graphing of monitoring systems

ganglia-webfrontend/bionic 3.6.1-3 all
  cluster monitoring toolkit - web front-end

golang-github-unknwon-cae-dev/bionic 0.0~git20160715.0.c6aac99-4 all
  PHP-like Compression and Archive Extensions in Go

haserl/bionic 0.9.35-2 amd64
  CGI scripting program for embedded environments

kdevelop-php-docs/bionic 5.2.1-1ubuntu2 all
  transitional package for kdevelop-php

kdevelop-php-docs-l10n/bionic 5.2.1-1ubuntu2 all
  transitional package for kdevelop-php-l10n
…
:

To learn more about what each module does, you could search the internet for more information about them. Alternatively, look at the long description of the package by typing:

apt show package_name

There will be a lot of output, with one field called Description which will have a longer explanation of the functionality that the module provides.

For example, to find out what the php-cli module does, you could type this:

apt show php-cli

Along with a large amount of other information, you’ll find something that looks like this:

Output
…
Description: command-line interpreter for the PHP scripting language (default)
 This package provides the /usr/bin/php command interpreter, useful for
 testing PHP scripts from a shell or performing general shell scripting tasks.
 .
 PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used
 open source general-purpose scripting language that is especially suited
 for web development and can be embedded into HTML.
 .
 This package is a dependency package, which depends on Ubuntu's default
 PHP version (currently 7.2).
…

If, after researching, you decide you would like to install a package, you can do so by using the apt install command like you have been doing for the other software.

If you decided that php-cli is something that you need, you could type:

sudo apt install php-cli

If you want to install more than one module, you can do that by listing each one, separated by a space, following the apt install command, like this:

sudo apt install package1 package2 ...

At this point, your LAMP stack is installed and configured. Before you do anything else, we recommend that you set up an Apache virtual host where you can store your server’s configuration details.

At this point, your LAMP stack is fully operational, but before testing your setup with a PHP script, it’s best to set up a proper Apache Virtual Host to hold your website’s files and folders.

Step 4 — Creating a Virtual Host for your Website

When using the Apache web server, you can create virtual hosts (similar to server blocks in Nginx) to encapsulate configuration details and host more than one domain from a single server. In this guide, we’ll set up a domain called your_domain, but you should replace this with your own domain name.

Apache on Ubuntu has one virtual host enabled by default that is configured to serve documents from the /var/www/html directory. While this works well for a single site, it can become unwieldy if you are hosting multiple sites. Instead of modifying /var/www/html, we’ll create a directory structure within /var/www for the your_domain site, leaving /var/www/html in place as the default directory to be served if a client request doesn’t match any other sites.

Create the directory for your_domain as follows:

sudo mkdir /var/www/your_domain

Next, assign ownership of the directory with the $USER environment variable, which will reference your current system user:

sudo chown -R $USER:$USER /var/www/your_domain

Then, open a new configuration file in Apache’s sites-available directory using your preferred command-line editor. Here, we’ll use nano:

sudo nano /etc/apache2/sites-available/your_domain.conf

This will create a new blank file. Add in the following bare-bones configuration with your own domain name:

<VirtualHost *:80>
    ServerName your_domain
    ServerAlias www.your_domain
    ServerAdmin webmaster@localhost
    DocumentRoot /var/www/your_domain
    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

Save and close the file when you’re done. If you’re using nano, do that by pressing CTRL+X, then Y and ENTER.

With this VirtualHost configuration, we’re telling Apache to serve your_domain using /var/www/your_domain as the web root directory. If you’d like to test Apache without a domain name, you can remove or comment out the options ServerName and ServerAlias by adding a pound sign (#) the beginning of each option’s lines.

Now, use a2ensite to enable the new virtual host:

sudo a2ensite your_domain

You might want to disable the default website that comes installed with Apache. This is required if you’re not using a custom domain name, because in this case Apache’s default configuration would override your virtual host. To disable Apache’s default website, type:

sudo a2dissite 000-default

To make sure your configuration file doesn’t contain syntax errors, run the following command:

sudo apache2ctl configtest

Finally, reload Apache so these changes take effect:

sudo systemctl reload apache2

Your new website is now active, but the web root /var/www/your_domain is still empty. Create an index.html file in that location to test that the virtual host works as expected:

nano /var/www/your_domain/index.html

Include the following content in this file:

<html>
  <head>
    <title>your_domain website</title>
  </head>
  <body>
    <h1>Hello World!</h1>

    <p>This is the landing page of <strong>your_domain</strong>.</p>
  </body>
</html>

Save and close the file, then go to your browser and access your server’s domain name or IP address:

http://server_domain_or_IP

Your web page should reflect the contents in the file you just edited:

You can leave this file in place as a temporary landing page for your application until you set up an index.php file to replace it. Once you do that, remember to remove or rename the index.html file from your document root, as it would take precedence over an index.php file by default.

A Note About DirectoryIndex on Apache

With the default DirectoryIndex settings on Apache, a file named index.html will always take precedence over an index.php file. This is useful for setting up maintenance pages in PHP applications, by creating a temporary index.html file containing an informative message to visitors. Because this page will take precedence over the index.php page, it will then become the landing page for the application. Once maintenance is over, the index.html is renamed or removed from the document root, bringing back the regular application page.

In case you want to change this behavior, you’ll need to edit the /etc/apache2/mods-enabled/dir.conf file and modify the order in which the index.php file is listed within the DirectoryIndex directive:

sudo nano /etc/apache2/mods-enabled/dir.conf

<IfModule mod_dir.c>
        DirectoryIndex index.php index.html index.cgi index.pl index.xhtml index.htm
</IfModule>

After saving and closing the file, you’ll need to reload Apache so the changes take effect:

sudo systemctl reload apache2

In the next step, we’ll create a PHP script to test that PHP is correctly installed and configured on your server.

Step 5 — Testing PHP Processing on your Web Server

Now that you have a custom location to host your website’s files and folders, create a PHP test script to confirm that Apache is able to handle and process requests for PHP files.

Create a new file named info.php inside your custom web root folder:

nano /var/www/your_domain/info.php

This will open a blank file. Add the following text, which is valid PHP code, inside the file:

<?php
phpinfo();

When you are finished, save and close the file.

To test this script, go to your web browser and access your server’s domain name or IP address, followed by the script name, which in this case is info.php:

http://server_domain_or_IP/info.php

Here is an example of the default PHP web page:

This page provides information about your server from the perspective of PHP. It is useful for debugging and to ensure that your settings are being applied correctly.

If you see this page in your browser, then your PHP installation is working as expected.

After checking the relevant information about your PHP server through that page, it’s best to remove the file you created as it contains sensitive information about your PHP environment and your Ubuntu server. Use rm to do so:

sudo rm /var/www/your_domain/info.php

You can always recreate this page if you need to access the information again later.

Step 6 — Testing Database Connection from PHP (Optional)

If you want to test whether PHP is able to connect to MySQL and execute database queries, you can create a test table with test data and query for its contents from a PHP script. Before you do that, you need to create a test database and a new MySQL user properly configured to access it.

Create a database named example_database and a user named example_user. You can replace these names with different values.

First, connect to the MySQL console using the root account:

sudo mysql

To create a new database, run the following command from your MySQL console:

CREATE DATABASE example_database;

Now create a new user and grant them full privileges on the custom database you’ve just created.

The following command creates a new user named example_user that authenticates with the caching_sha2_password method. We’re defining this user’s password as password, but you should replace this value with a secure password of your own choosing.

CREATE USER 'example_user'@'%' IDENTIFIED BY 'password';

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';

Now give this user permission over the example_database database:

GRANT ALL ON example_database.* TO 'example_user'@'%';

This will give the example_user user full privileges over the example_database database, while preventing this user from creating or modifying other databases on your server.

Now exit the MySQL shell with:

exit

Test if the new user has the proper permissions by logging in to the MySQL console again, this time using the custom user credentials:

mysql -u example_user -p

Notice the -p flag in this command, which will prompt you for the password used when creating the example_user user. After logging in to the MySQL console, confirm that you have access to the example_database database:

SHOW DATABASES;

This will give you the following output:

Output
+--------------------+
| Database           |
+--------------------+
| example_database   |
| information_schema |
+--------------------+
2 rows in set (0.000 sec)

Next, create a test table named todo_list. From the MySQL console, run the following statement:

CREATE TABLE example_database.todo_list (
  item_id INT AUTO_INCREMENT,
  content VARCHAR(255),
  PRIMARY KEY(item_id)
);

Insert a few rows of content in the test table. Repeat the next command a few times, using different values, to populate your test table:

INSERT INTO example_database.todo_list (content) VALUES ("My first important item");

To confirm that the data was successfully saved to your table, run:

SELECT * FROM example_database.todo_list;

The following is the output:

Output
+---------+--------------------------+
| item_id | content                  |
+---------+--------------------------+
|       1 | My first important item  |
|       2 | My second important item |
|       3 | My third important item  |
|       4 | and this one more thing  |
+---------+--------------------------+
4 rows in set (0.000 sec)

After confirming that you have valid data in your test table, exit the MySQL console:

exit

Now you can create the PHP script that will connect to MySQL and query for your content. Create a new PHP file in your custom web root directory using your preferred editor:

nano /var/www/your_domain/todo_list.php

The following PHP script connects to the MySQL database and queries for the content of the todo_list table, exhibiting the results in a list. If there’s a problem with the database connection, it will throw an exception.

Add this content into your todo_list.php script, remembering to replace the example_user and password with your own:

<?php
$user = "example_user";
$password = "password";
$database = "example_database";
$table = "todo_list";

try {
  $db = new PDO("mysql:host=localhost;dbname=$database", $user, $password);
  echo "<h2>TODO</h2><ol>";
  foreach($db->query("SELECT content FROM $table") as $row) {
    echo "<li>" . $row['content'] . "</li>";
  }
  echo "</ol>";
} catch (PDOException $e) {
    print "Error!: " . $e->getMessage() . "<br/>";
    die();
}

Save and close the file when you’re done editing.

You can now access this page in your web browser by visiting the domain name or public IP address configured for your website, followed by /todo_list.php:

http://your_domain_or_IP/todo_list.php

This web page should reveal the content you’ve inserted in your test table to your visitor:

That means your PHP environment is ready to connect and interact with your MySQL server.

Conclusion

In this guide, you’ve built a flexible foundation for serving PHP websites and applications to your visitors, using Apache as a web server and MySQL as a database system.

As an immediate next step, you should ensure that connections to your web server are secured, by serving them via HTTPS. In order to accomplish that, you can use Let’s Encrypt on Ubuntu 22.04 / 20.04 / 18.04 to secure your site with a free TLS/SSL certificate.