About
The automated build docker LEMP image linuxconfig/lemp-php7 can be used as a testing and also as a production environment for a dynamic PHP applications. It comprises of Debian GNU/Linux, lightweight and yet powerful Nginx webserver, MySQL relational database management system and PHP scripting language.
At the time of writing, Debian Linux does not come with PHP 7 as a part of a its standard repository. From this reason PHP 7 was compiled from the source code during docker image build using compile-php-debian script located at https://github.com/linuxconfig/compile-php-debian.
Furthermore, not all 3rd-party PHP modules are currently supported on PHP 7.
Deployment
The following section describes the deployment of linuxconfig/lemp-php7 docker on your docker host. Let’ start by creating a sample PHP website with a MySQL connection handle. Alternatively add phpinfo(); into the mix to display current PHP information page:
<?php
$link = mysqli_connect("127.0.0.1", "admin", "pass");
if (!$link) {
echo "Error: Unable to connect to MySQL." . PHP_EOL;
echo "Debugging errno: " . mysqli_connect_errno() . PHP_EOL;
echo "Debugging error: " . mysqli_connect_error() . PHP_EOL;
exit;
}
echo "Success: A proper connection to MySQL was made!" . PHP_EOL;
echo "Host information: " . mysqli_get_host_info($link) . PHP_EOL;
mysqli_close($link);
?>
Save the above code into index.php file and within a new html directory. Alternatively,html directory may contain your desired PHP application:
$ mkdir html $ vi html/index.php $ ls html/ index.php
At this stage we are ready to deploy linuxconfig/lemp-php7 docker image:
# docker run --name=lemp -dP -v $PWD/html:/var/www/html linuxconfig/lemp-php7 8306ab0e404e5e5ce4f17731f88a610f7f8bc939289c0746b875716355df0b1a
By executing the above command we have created and started a new docker container lemp. At the same time we have also mounted our website development directory html as nginx’s root directory. Both, MySQL and Nginx ports are now bound to a host system’s random port.
The both local ports can now be used to access both MySQL and Nginx services :
# docker port lemp 3306/tcp -> 0.0.0.0:32772 80/tcp -> 0.0.0.0:32773
Nginx Access
At this stage Nginx webserver and our website can be accessed via ports given by $ sudo docker port lemp command. Use command line or your browser to navigate to http://localhost:32773 URL:
# curl -i http://localhost:32773
HTTP/1.1 200 OK
Server: nginx/1.6.2
Date: Sun, 01 Jan 2017 22:51:58 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
X-Powered-By: PHP/7.1.0
Success: A proper connection to MySQL was made!
Host information: 127.0.0.1 via TCP/IP
MySQL Access
The MySQL database can be accessed via admin user and default password pass. As previously, first we need to obtain the host system port number linked to MySQL database within a docker image by using $ sudo docker port lemp command. Next, we can connect to database:
$ mysql -uadmin -ppass -h 127.0.0.1 -P32772 Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 15 Server version: 5.5.53-0+deb8u1 (Debian) Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. 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>
PHP 7
As already mentioned above, PHP 7 was compiled from a bleeding edge PHP 7 branch. The entire installation was performed into /usr/local/php-VERSION/ directory. From this reason to access the command line php binary you either run it with a full path:
# docker exec -it lemp /usr/local/php-7.1.0/bin/php -v
PHP 7.1.0 (cli) (built: Jan 1 2017 21:33:40) ( NTS )
Copyright (c) 1997-2016 The PHP Group
Zend Engine v3.1.0-dev, Copyright (c) 1998-2016 Zend Technologies
with Zend OPcache v7.1.0, Copyright (c) 1999-2016, by Zend Technologies
or include /usr/local/php-7.1.0/bin/ as part of your PATH environmental variable.
Additional Information
Obtain a list of enabled PHP 7 modules
# docker exec -it lemp /usr/local/php-7.1.0/bin/php -m [PHP Modules] bcmath bz2 calendar Core ctype curl date dba dom exif fileinfo filter ftp gd gettext hash iconv intl json libxml mbstring mcrypt mysqli mysqlnd openssl pcntl pcre PDO pdo_mysql pdo_sqlite Phar posix pspell readline Reflection session shmop SimpleXML soap sockets SPL sqlite3 standard sysvmsg sysvsem sysvshm tokenizer wddx xml xmlreader xmlwriter Zend OPcache zip zlib [Zend Modules] Zend OPcache
Container Access
While your lemp container is running it can be access by:
$ sudo docker exec -it lemp /bin/bash root@8306ab0e404e:/#
Reset MySQL user password
The below command will set a new password 123for theadmin user :
# mysql
mysql> SET PASSWORD FOR 'admin'@'%' = PASSWORD('123');
Restart lemp stack
$ sudo docker exec lemp service supervisor restart
