devilbox/doc/Info.md

Devilbox Documentation

Home | Overview | Configuration | Usage | Updating | Info | PHP Projects | Emails | Logs | Intranet | FAQ

---

Info

Available containers

It is best to use the hostnames and not to rely on the ip addresses as they might change. In most cases however you can even use 127.0.0.1 or localhost (See background section below).

E.g.: When you want to setup a MySQL database connection use mysql or 127.0.0.1 as the hostname.

Container	Container name	Hostname	IP Address
DNS	bind	bind	172.16.238.100
PHP / HHVM	php	php	172.16.238.10
Apache / Nginx	http	http	172.16.238.11
MySQL / MariaDB	mysql	mysql	172.16.238.12
PostgreSQL	pgsql	pgsql	172.16.238.13
Redis	redis	redis	172.16.238.14
Memcached	memcd	memcd	172.16.238.15

Background

Background - PHP Container

The php container is the center of all container. Everything happens in there. This is also the reason it does some more magic than actually required.

Remote ports and remote sockets are made available to the php container.

The PHP container is using socat to

1. forward the remote mysql port 3306 (on the mysql container) to its own 127.0.0.1:3306
2. forward the remote pgsql port 5432 (on the mysql container) to its own 127.0.0.1:5432
3. forward the remote redis port 6379 (on the mysql container) to its own 127.0.0.1:6379
4. forward the remote memcached port 11211 (on the memcd container) to its own 127.0.0.1:11211

Background - Docker Host

The docker host (your computer) does exactly the same as the php container.

1. container mysql port 3306 is exposed to the host on port 127.0.0.1:3306
2. container pgsql port 5432 is exposed to the host on port 127.0.0.1:5432
3. container redis port 6379 is exposed to the host on port 127.0.0.1:6379
4. container memcd port 11211 is exposed to the host on port 127.0.0.1:11211

Also the database sockets from the container are mounted into the host.

Background - Benefit of the above

With the PHP container and the docker host (your computer) behaving the same it is possible to write your php applications like this:

<?php
mysql_connect('127.0.0.1', 'user', 'pass');

This setup can then either be served by the docker or by your host computer (if you shutdown docker and start your local lamp stack)