Launch the instance and connect with ssh.
##Update the server
sudo yum update
##Install php and MySQL packages
sudo yum install https mod_ssl mysql mysql-server php php-mysql php-xml
##Install phpMyAdmin
Get the RPMforge repo (32-bit, for 64-bit use http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el5.rf.i386.rpm)
wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.3.6-1.el5.rf.i386.rpm
sudo rpm -Uvh rpmforge-release-0.3.6-1.el5.rf.i386.rpm
Install
sudo yum install phpmyadmin
##Start MySQL service
cd /etc/rc.d/init.d/
sudo ./mysqld start
sudo /usr/bin/mysql_secure_installation //follow instructions
##Setup startup scripts for apache and MySQL
cd /etc/rc.d/rc3.d
sudo rm K15httpd
sudo rm K36mysqld
sudo ln -s ../init.d/mysqld S30mysql
sudo ln -s ../init.d/httpd S85httpd
##Setup phpMyAdmin
Allow access from external IP's
sudo chmod 0700 /etc/httpd/conf.d/phpmyadmin.conf
sudo nano /etc/httpd/conf.d/phpmyadmin.conf
# Web application to manage MySQL
# #
# Order Deny,Allow
# Deny from all
Allow from 127.0.0.1
#
Alias /phpmyadmin /usr/share/phpmyadmin
Alias /phpMyAdmin /usr/share/phpmyadmin
Alias /mysqladmin /usr/share/phpmyadmin
Set blowfish_secret to make it work with cookie auth
sudo chmod 0700 /usr/share/phpmyadmin/config.inc.php
sudo nano /usr/share/phpmyadmin/config.inc.php
...
$cfg['blowfish_secret'] = 'put-a-magic-string-here'; /* YOU MUST FILL IN THIS FOR COOKIE AUTH! */
...
sudo chmod 0755 /usr/share/phpmyadmin/config.inc.php
##Make mod_rewrite (.htaccess) work in subdirectories
cd /etc/httpd/conf
sudo nano httpd.conf
Find <Directory "/var/www/html">
Replace AllowOverride none
with AllowOverride all
(optional if apache is running already, restart it)
sudo service httpd restart
##Start apache
sudo /etc/rc.d/init.d/httpd start
##Sources
I am totally agree with "AnthonyVipond", never use "PHPmyadmin" on your live server. If you don't believe, check your server access log to see how many people are trying to scan or brute force your install. Our company use this LAMP stack AMI with everything pre-installed, configured and secured, and it only take us less than two hours to get everything running on EC2. https://aws.amazon.com/marketplace/pp/B00KSGVT9C