devilbox/docs/configuration-files/env-file.rst

.env file

All docker-compose configuration is done inside the .env file which simply defines key-value pairs evaluated by docker-compose.yml.

If this file does not exist at the root of your Devilbox git directory, then copy env-example to .env to initially create it with sane defaults.

what is the file?

Note

Use your browsers search function to quickly find the desired variable name.

Important

Any change of .env requires a restart of the Devilbox.

Table of Contents

local

Core settings

DEBUG_COMPOSE_ENTRYPOINT

This variable controls the docker-compose log verbosity during service startup. When set to 1 verbose output as well as executed commands are shown. When set to 0 only warnings and errors are shown.

Name	Allowed values	Default value
DEBUG_COMPOSE_ENTRYPOINT	0 or 1	1

DOCKER_LOGS

This variable controls the output of logs. Logs can either go to file and will be available under ./log/ inside the Devilbox git directory or they can be forwarded to Docker logs and will then be send to stdout and stderr.

Name	Allowed values	Default value
DOCKER_LOGS	1 or 0	0

When DOCKER_LOGS is set to 1, output will go to Docker logs, otherwise if it is set to 0 the log output will go to files under ./log/.

The ./log/ directory itself will contain subdirectories in the form <service>-<version> which will then hold all available log files.

Note

Log directories do not exist until you start the Devilbox and will only be created for the service versions you have enabled in .env.

The log directory structure would look something like this:

host> cd path/to/devilbox
host> tree log

log/
├── nginx-stable/
│   ├── nginx-stable/
│   ├── defaultlocalhost-access.log
│   ├── defaultlocalhost-error.log
│   ├── <project-name>-access.log    # Each project has its own access log
│   ├── <project-name>-error.log     # Each project has its own error log
├── mariadb-10.1/
│   ├── error.log
│   ├── query.log
│   ├── slow.log
├── php-fpm-7.1/
│   ├── php-fpm.access
│   ├── php-fpm.error

When you want to read logs sent to Docker logs, you can do so via the following command:

host> cd path/to/devilbox
host> docker-compose logs

When you want to continuously watch the log output (such as tail -f), you need to append -f to the command.

host> cd path/to/devilbox
host> docker-compose logs -f

When you only want to have logs displayed for a single service, you can also append the service name (works with or without -f as well):

host> cd path/to/devilbox
host> docker-compose logs php -f

Important

Currently this is only implemented for PHP-FPM and HTTPD Docker container. MySQL will always output its logs to file and all other official Docker container always output to Docker logs.

DEVILBOX_PATH

This specifies a relative or absolute path to the Devilbox git directory and will be used as a prefix for all Docker mount paths.

• Relative path: relative to the devilbox git directory (Must start with .)
• Absolute path: Full path (Must start with /)

The only reason you would ever want change this variable is when you are on MacOS and relocate your project files onto an NFS volume due to performance issues.

Warning

remove_stopped_container Whenever you change this value you have to stop the Devilbox and also remove the stopped container via docker-compose rm.

Name	Allowed values	Default value
DEVILBOX_PATH	valid path	.

LOCAL_LISTEN_ADDR

This variable specifies you host computers listening IP address for exposed container ports. If you leave this variable empty, all exposed ports will be bound to all network interfaces on your host operating system, which is also the default behaviour. If you only want the exposed container ports to be bound to a specific IP address (such as 127.0.0.1), you can add this IP address here, but note, in this case you must add a trailing colon (:).

Name	Allowed values	Default value
LOCAL_LISTEN_ADDR	IP address	empty

Examples:

Value	Meaning
127.0.0.1:	only expose ports on your host os on 127.0.0.1. Note the trailing :
192.168.0.1:	only expose ports on your host os on 192.168.0.1. Note the trailing :
0.0.0.0:	listen on all host computer interfaces / IP addresses
	listen on all host computer interfaces / IP addresses

Note

When using Docker Toolbox, you must leave this variable empty, in order to have the exposed ports available on the external interface of the virtual machine.

TLD_SUFFIX

This variable controls all of your projects domain suffix.

Name	Allowed values	Default value
TLD_SUFFIX	alpha-num string	loc

Your project domains are built together out of the project directory name and the TLD_SUFFIX. The formula is like this: http://<project-dir>.<TLD_SUFFIX>.

You can even use official tld's and have your nameserver point to an internal LAN id, to make this project visible to everyone in your corporate LAN.

How does it look?

Project dir	TLD_SUFFIX	Project URL
my-test	loc	http://my-test.loc
example	loc	http://example.loc
www.test	loc	http://www.test.loc
my-test	local	http://my-test.local
example	local	http://example.local
www.test	local	http://www.test.local

Warning

Do not use dev as a domain suffix (I know, it's tempting). It has been registered by and they advertise the which makes your browser redirect every http request to https.

See also:

Warning

Do not use localhost as a domain suffix. There is an RFC draft to make sure all localhost requests, including their sub domains should be redirected to the systems loopback interface. Docker has already released a commit preventing the use of localhost on MacOS.

See also: and

Warning

Do not use official domain endings such as .com, .org, .net, etc. If you do, all name resolutions to any .com address (e.g.: google.com) will be resolved to the Devilbox's PHP server IP address.

The bundled DNS server does a catch-all on the given TLD_SUFFIX and resolves everything below it to the PHP container.

EXTRA_HOSTS

This variable allows you to add additional DNS entries from hosts outside the Devilbox network, such as hosts running on your host operating system, the LAN or from the internet.

Name	Allowed values	Default value
EXTRA_HOSTS	comma separated host mapping	empty

Adding hosts can be done in two ways:

1. Add DNS entry for an IP address
2. Add DNS entry for a hostname/CNAME which will be mapped to whatever IP address it will resolve

The general structure to add extra hosts looks like this

# Single host
EXTRA_HOSTS='hostname=1.1.1.1'
EXTRA_HOSTS='hostname=CNAME'

# Multiple hosts
EXTRA_HOSTS='hostname1=1.1.1.1,hostname2=2.2.2.2'
EXTRA_HOSTS='hostname1=CNAME1,hostname2=CNAME2'

• The left side represents the name by which the host will be available by
• The right side represents the IP address by which the new name will resolve to
• If the right side is a CNAME itself, it will be first resolved to an IP address and then the left side will resolve to that IP address.

A few examples for adding extra hosts:

# 1. One entry:
# The following extra host 'loc' is added and will always point to 192.168.0.7.
# When reverse resolving '192.168.0.7' it will answer with 'tld'.
EXTRA_HOSTS='loc=192.168.0.7'

# 2. One entry:
# The following extra host 'my.host.loc' is added and will always point to 192.168.0.9.
# When reverse resolving '192.168.0.9' it will answer with 'my.host'.
EXTRA_HOSTS='my.host.loc=192.168.0.9'

# 3. Two entries:
# The following extra host 'tld' is added and will always point to 192.168.0.1.
# When reverse resolving '192.168.0.1' it will answer with 'tld'.
# A second extra host 'example.org' is added and always redirects to 192.168.0.2
# When reverse resolving '192.168.0.2' it will answer with 'example.org'.
EXTRA_HOSTS='tld=192.168.0.1,example.org=192.168.0.2'

# 4. Using CNAME's for resolving:
# The following extra host 'my.host' is added and will always point to whatever
# IP example.org resolves to.
# When reverse resolving '192.168.0.1' it will answer with 'my.host'.
EXTRA_HOSTS='my.host=example.org'

This resembles the feature of to add external links.

connect_to_external_hosts

NEW_UID

This setting controls one of the core concepts of the Devilbox. It overcomes the problem of syncronizing file and directory permissions between the Docker container and your host operating system.

You should set this value to the user id of your host operating systems user you actually work with. How do you find out your user id?

host> id -u
1000

In most cases (on Linux and MacOS), this will be 1000 if you are the first and only user on your system, however it could also be a different value.

Name	Allowed values	Default value
NEW_UID	valid uid	1000

The Devilbox own containers will then pick up this value during startup and change their internal user id to the one specified. Services like PHP-FPM, Apache and Nginx will then do read and write operation of files with this uid, so all files mounted will have permissions as your local user and you do not have to fix permissions afterwards.

syncronize_container_permissions Read up more on the general problem of trying to have syncronized permissions between the host system and a running Docker container.

NEW_GID

This is the equivalent to user id for groups and addresses the same concept. See env_new_uid.

How do you find out your group id?

host> id -g
1000

In most cases (on Linux and MacOS), this will be 1000 if you are the first and only user on your system, however it could also be a different value.

Name	Allowed values	Default value
NEW_GID	valid gid	1000

syncronize_container_permissions Read up more on the general problem of trying to have syncronized permissions between the host system and a running Docker container.

TIMEZONE

This variable controls the system as well as service timezone for the Devilbox's own containers. This is especially useful to keep PHP and database timezones in sync.

Name	Allowed values	Default value
TIMEZONE	valid timezone	UTC

Have a look at Wikipedia to get a list of valid timezones:

Note

It is always a good practice not to assume a specific timezone anyway and store all values in UTC (such as time types in MySQL).

Intranet settings

DNS_CHECK_TIMEOUT

The Devilbox intranet validates if every project has a corresponding DNS record (either an official DNS record, one that came from its own Auto-DNS or an /etc/hosts entry). By doing so it queries the DNS record based on <project-dir>.<TLD_SUFFIX>. In case it does not exist, the query itself might take a while and the intranet page will be unresponsive during that time. In order to avoid long waiting times, you can set the DNS query time-out in seconds after which the query should stop and report as unsuccessful. The default is 1 second, wich should be fairly sane for all use-cases.

Name	Allowed values	Default value
DNS_CHECK_TIMEOUT	integers	1

DEVILBOX_UI_SSL_CN

When accessing the Devilbox intranet via https it will use an automatically created SSL certificate. Each SSL certificate requires a valid Common Name, which must match the virtual host name.

This setting let's you specify by what name you are accessing the Devilbox intranet. The default is localhost, but if you have created your own alias, you must change this value accordingly. Also note that multiple values are possible and must be separated with a comma. When you add an asterisk (*.) to the beginning, it means it will create a wildcard certificate for that hostname.

Name	Allowed values	Default value
DEVILBOX_UI_SSL_CN	comma separated list of CN's	localhost,*.localhost,devilbox,*.devilbox

Examples:

• DEVILBOX_UI_SSL_CN=localhost
• DEVILBOX_UI_SSL_CN=localhost,*.localhost
• DEVILBOX_UI_SSL_CN=localhost,*.localhost,devilbox,*.devilbox
• DEVILBOX_UI_SSL_CN=intranet.example.com

setup_valid_https

DEVILBOX_UI_PROTECT

By setting this variable to 1, the Devilbox intranet will be password protected. This might be useful, if you share your running Devilbox instance accross a LAN, but do not want everybody to have access to the intranet itself, just to the projects you actually provide.

Name	Allowed values	Default value
DEVILBOX_UI_PROTECT	0 or 1	0

Note

Also pay attention to the next env var, which will control the password for the login: DEVILBOX_UI_PASSWORD.

DEVILBOX_UI_PASSWORD

When the devilbox intranet is password-protected via DEVILBOX_UI_PROTECT, this is the actual password by which it will be protected.

Name	Allowed values	Default value
DEVILBOX_UI_PASSWORD	any string	password

DEVILBOX_UI_ENABLE

In case you want to completely disable the Devilbox intranet, such as when running it on production, you need to set this variable to 0.

By disabling the intranet, the webserver will simply remove the default virtual host and redirect all IP-based requests to the first available virtual host, which will be you first project when ordering their names alphabetically.

Name	Allowed values	Default value
DEVILBOX_UI_ENABLE	0 or 1	1

DEVILBOX_VENDOR_PHPMYADMIN_AUTOLOGIN

By default phpMyAdmin will autologin without having to specify username or password. The phpMyAdmin vendor is not protected once you protect the Intranet. If you want users to enter username and password here as well, you should set the value to 0.

Name	Allowed values	Default value
DEVILBOX_VENDOR_PHPMYADMIN_AUTOLOGIN	0 or 1	1

DEVILBOX_VENDOR_PHPPGADMIN_AUTOLOGIN

By default phpPgAdmin will autologin without having to specify username or password. The phpPgAdmin vendor is not protected once you protect the Intranet. If you want users to enter username and password here as well, you should set the value to 0.

Name	Allowed values	Default value
DEVILBOX_VENDOR_PHPPGADMIN_AUTOLOGIN	0 or 1	1

Docker image versions

The following settings reflect one of the main goals of the Devilbox: being able to run any combination of all container versions.

Note

Any change for those settings requires a restart of the devilbox.

PHP_SERVER

This variable choses your desired PHP-FPM version to be started.

Name	Allowed values	Default value
PHP_SERVER	php-fpm-5.2 php-fpm-5.3 php-fpm-5.4 php-fpm-5.5 php-fpm-5.6 php-fpm-7.0 php-fpm-7.1 php-fpm-7.2 php-fpm-7.3 php-fpm-7.4 php-fpm-8.0	php-fpm-7.2

Important

PHP 5.2 is available to use, but it is not officially supported. The Devilbox intranet does not work with this version as PHP 5.2 does not support namespaces. Furthermore PHP 5.2 does only work with Apache 2.4, Nginx stable and Nginx mainline. It does not work with Apache 2.2. Use at your own risk.

All values are already available in the .env file and just need to be commented or uncommented. If multiple values are uncommented, the last uncommented variable one takes precedences:

host> grep PHP_SERVER .env

#PHP_SERVER=php-fpm-5.2
#PHP_SERVER=php-fpm-5.3
#PHP_SERVER=php-fpm-5.4
#PHP_SERVER=php-fpm-5.5
#PHP_SERVER=php-fpm-5.6
#PHP_SERVER=php-fpm-7.0
PHP_SERVER=php-fpm-7.1
#PHP_SERVER=php-fpm-7.2
#PHP_SERVER=php-fpm-7.3
#PHP_SERVER=php-fpm-7.4
#PHP_SERVER=php-fpm-8.0

HTTPD_SERVER

This variable choses your desired web server version to be started.

Name	Allowed values	Default value
HTTPD_SERVER	apache-2.2 apache-2.4 nginx-stable nginx-mainline	nginx-stable

All values are already available in the .env file and just need to be commented or uncommented. If multiple values are uncommented, the last uncommented variable one takes precedences:

host> grep HTTPD_SERVER .env

#HTTPD_SERVER=apache-2.2
#HTTPD_SERVER=apache-2.4
HTTPD_SERVER=nginx-stable
#HTTPD_SERVER=nginx-mainline

MYSQL_SERVER

This variable choses your desired MySQL server version to be started.

Name	Allowed values	Default value
MYSQL_SERVER	mysql-5.5 mysql-5.6 mariadb-10.2 percona-5.7 and many more	mariadb-10.3

All values are already available in the .env file and just need to be commented or uncommented. If multiple values are uncommented, the last uncommented variable one takes precedences:

host> grep MYSQL_SERVER .env

#MYSQL_SERVER=mysql-5.5
#MYSQL_SERVER=mysql-5.6
#MYSQL_SERVER=mysql-5.7
#MYSQL_SERVER=mysql-8.0
#MYSQL_SERVER=mariadb-5.5
#MYSQL_SERVER=mariadb-10.0
#MYSQL_SERVER=mariadb-10.1
#MYSQL_SERVER=mariadb-10.2
MYSQL_SERVER=mariadb-10.3
#MYSQL_SERVER=mariadb-10.4
#MYSQL_SERVER=percona-5.5
#MYSQL_SERVER=percona-5.6
#MYSQL_SERVER=percona-5.7
#MYSQL_SERVER=percona-8.0

PGSQL_SERVER

This variable choses your desired PostgreSQL server version to be started.

Name	Allowed values	Default value
PGSQL_SERVER	9.1 9.2 9.3 9.4 and many more	11.1

All values are already available in the .env file and just need to be commented or uncommented. If multiple values are uncommented, the last uncommented variable one takes precedences:

host> grep PGSQL_SERVER .env

#PGSQL_SERVER=9.0
#PGSQL_SERVER=9.1
#PGSQL_SERVER=9.2
#PGSQL_SERVER=9.2-alpine
#PGSQL_SERVER=9.3
#PGSQL_SERVER=9.3-alpine
#PGSQL_SERVER=9.4
#PGSQL_SERVER=9.4-alpine
#PGSQL_SERVER=9.5
#PGSQL_SERVER=9.5-alpine
#PGSQL_SERVER=9.6
#PGSQL_SERVER=9.6-alpine
#PGSQL_SERVER=10.0
#PGSQL_SERVER=10.0-alpine
#PGSQL_SERVER=10.1
#PGSQL_SERVER=10.1-alpine
#PGSQL_SERVER=10.2
#PGSQL_SERVER=10.2-alpine
#PGSQL_SERVER=10.3
#PGSQL_SERVER=10.3-alpine
#PGSQL_SERVER=10.4
#PGSQL_SERVER=10.4-alpine
#PGSQL_SERVER=10.5
#PGSQL_SERVER=10.5-alpine
#PGSQL_SERVER=10.6
#PGSQL_SERVER=10.6-alpine
#PGSQL_SERVER=11.0
#PGSQL_SERVER=11.0-alpine
PGSQL_SERVER=11.1
#PGSQL_SERVER=11.1-alpine
#PGSQL_SERVER=latest
#PGSQL_SERVER=alpine

Note

This is the official PostgreSQL server which might already have other tags available, check their official website for even more versions.

REDIS_SERVER

This variable choses your desired Redis server version to be started.

Name	Allowed values	Default value
REDIS_SERVER	2.8 3.0 3.2 4.0 and many more	5.0

All values are already available in the .env file and just need to be commented or uncommented. If multiple values are uncommented, the last uncommented variable one takes precedences:

host> grep REDIS_SERVER .env

#REDIS_SERVER=2.8
#REDIS_SERVER=3.0
#REDIS_SERVER=3.0-alpine
#REDIS_SERVER=3.2
#REDIS_SERVER=3.2-alpine
#REDIS_SERVER=4.0
#REDIS_SERVER=4.0-alpine
REDIS_SERVER=5.0
#REDIS_SERVER=5.0-alpine
#REDIS_SERVER=latest
#REDIS_SERVER=alpine

Note

This is the official Redis server which might already have other tags available, check their official website for even more versions.

MEMCD_SERVER

This variable choses your desired Memcached server version to be started.

Name	Allowed values	Default value
MEMCD_SERVER	1.4 1.4-alpine 1.5 1.5-alpine latest and alpine	1.5

All values are already available in the .env file and just need to be commented or uncommented. If multiple values are uncommented, the last uncommented variable one takes precedences:

host> grep MEMCD_SERVER .env

#MEMCD_SERVER=1.4
#MEMCD_SERVER=1.4-alpine
MEMCD_SERVER=1.5
#MEMCD_SERVER=1.5-alpine
#MEMCD_SERVER=latest
#MEMCD_SERVER=alpine

Note

This is the official Memcached server which might already have other tags available, check their official website for even more versions.

MONGO_SERVER

This variable choses your desired MongoDB server version to be started.

Name	Allowed values	Default value
MONGO_SERVER	2.8 3.0 3.2 3.4 4.0 and latest	4.0

All values are already available in the .env file and just need to be commented or uncommented. If multiple values are uncommented, the last uncommented variable one takes precedences:

host> grep MONGO_SERVER .env

#MONGO_SERVER=2.8
#MONGO_SERVER=3.0
#MONGO_SERVER=3.2
#MONGO_SERVER=3.4
#MONGO_SERVER=3.6
MONGO_SERVER=4.0
#MONGO_SERVER=latest

Note

This is the official MongoDB server which might already have other tags available, check their official website for even more versions.

Docker host mounts

The Docker host mounts are directory paths on your host operating system that will be mounted into the running Docker container. This makes data persistent accross restarts and let them be available on both sides: Your host operating system as well as inside the container.

This also gives you the choice to edit data on your host operating system, such as with your favourite IDE/editor and also inside the container, by using the bundled tools, such as downloading libraries with composer and others.

Being able to do that on both sides, removes the need to install any development tools (except your IDE/editor) on your host and have everything fully encapsulated into the containers itself.

MOUNT_OPTIONS

This variable allows you to add custom mount options/flags to all mounted directories. Initially only rw or ro are applied to mount points, you can however extend this before starting up the Devilbox.

Name	Allowed values	Default value
MOUNT_OPTIONS	valid mount option	empty

If you are on Linux with SELinux enabled, you will want to set this value to ,z to modify SELinux labels in order to share mounts among multiple container.

* * *

Important

When adding custom mount options, ensure to start with a leading ,, as those options are prepended to already existing options.

MOUNT_OPTIONS=,z
MOUNT_OPTIONS=,cached

HOST_PATH_HTTPD_DATADIR

This is an absolute or relative path (relative to Devilbox git directory) to your data directory.

getting_started_directory_overview_datadir

By default, all of your websites/projects will be stored in that directory. If however you want to separate your data from the Devilbox git directory, do change the path to a place where you want to store all of your projects on your host computer.

• Relative path: relative to the devilbox git directory (Must start with .)
• Absolute path: Full path (Must start with /)

Name	Allowed values	Default value
HOST_PATH_HTTPD_DATADIR	valid path	./data/www

Example

If you want to move all your projects to /home/myuser/workspace/web/ for example, just set it like this:

HOST_PATH_HTTPD_DATADIR=/home/myuser/workspace/web

Mapping

No matter what path you assign, inside the PHP and the web server container your data dir will always be /shared/httpd/.

Warning

Do not create any symlinks inside your project directories that go outside the data dir. Anything which is outside this directory is not mounted into the container.

Warning

remove_stopped_container Whenever you change this value you have to stop the Devilbox and also remove the stopped container via docker-compose rm.

Docker host ports

All describned host ports below are ports that the Docker container expose on your host operating system. By default each port will be exposed to all interfaces or IP addresses of the host operating system. This can be controlled with env_local_listen_addr.

How to list used ports on Linux and MacOS

Open a terminal and type the following:

host> netstat -an | grep 'LISTEN\s'
tcp        0      0 127.0.0.1:53585    0.0.0.0:*     LISTEN
tcp        0      0 127.0.0.1:37715    0.0.0.0:*     LISTEN
tcp        0      0 127.0.0.1:58555    0.0.0.0:*     LISTEN
tcp        0      0 127.0.0.1:48573    0.0.0.0:*     LISTEN
tcp        0      0 127.0.0.1:34591    0.0.0.0:*     LISTEN
tcp        0      0 127.0.0.1:8000     0.0.0.0:*     LISTEN

How to list used ports on Windows

Open the command prompt and type the following:

C:\WINDOWS\system32> netstat -an
Proto  Local Address       Foreign Address      State
TCP    0.0.0.0:80          0.0.0.0:0            LISTENING
TCP    0.0.0.0:145         0.0.0.0:0            LISTENING
TCP    0.0.0.0:445         0.0.0.0:0            LISTENING
TCP    0.0.0.0:1875        0.0.0.0:0            LISTENING

Warning

howto_docker_toolbox_and_the_devilbox When using Docker Toobox ensure that ports are exposed to all interfaces. See env_local_listen_addr

Warning

Before setting the ports, ensure that they are not already in use on your host operating system by other services.

HOST_PORT_HTTPD

The port to expose for the web server (Apache or Nginx). This is usually 80. Set it to something else if 80 is already in use on your host operating system.

Name	Allowed values	Default value
HOST_PORT_HTTPD	1 - 65535	80

HOST_PORT_HTTPD_SSL

The port to expose for the web server (Apache or Nginx) for HTTPS (SSL) requests. This is usually 443. Set it to something else if 443 is already in use on your host operating system.

Name	Allowed values	Default value
HOST_PORT_HTTPD_SSL	1 - 65535	443

HOST_PORT_MYSQL

The port to expose for the MySQL server (MySQL, MariaDB or PerconaDB). This is usually 3306. Set it to something else if 3306 is already in use on your host operating system.

Name	Allowed values	Default value
HOST_PORT_MYSQL	1 - 65535	3306

HOST_PORT_PGSQL

The port to expose for the PostgreSQL server. This is usually 5432. Set it to something else if 5432 is already in use on your host operating system.

Name	Allowed values	Default value
HOST_PORT_PGSQL	1 - 65535	5432

HOST_PORT_REDIS

The port to expose for the Redis server. This is usually 6379. Set it to something else if 6379 is already in use on your host operating system.

Name	Allowed values	Default value
HOST_PORT_REDIS	1 - 65535	5432

HOST_PORT_MEMCD

The port to expose for the Memcached server. This is usually 11211. Set it to something else if 11211 is already in use on your host operating system.

Name	Allowed values	Default value
HOST_PORT_MEMCD	1 - 65535	11211

HOST_PORT_MONGO

The port to expose for the MongoDB server. This is usually 27017. Set it to something else if 27017 is already in use on your host operating system.

Name	Allowed values	Default value
HOST_PORT_MONGO	1 - 65535	27017

HOST_PORT_BIND

The port to expose for the BIND DNS server. This is usually 53. Set it to something else if 53 is already in use on your host operating system.

Name	Allowed values	Default value
HOST_PORT_BIND	1 - 65535	1053

Warning

As you might have noticed, BIND is not set to its default port 53 by default, but rather to 1053. This is because some operating system already have a local DNS resolver running on port 53 which would result in a failure when this BIND server is starting.

You only need to set BIND to port 53 when you want to use the Auto-DNS feautre of the Devilbox. When doing so, read this article with care: setup_auto_dns.

Container settings

PHP

PHP_MODULES_ENABLE

Enable any non-standard PHP modules in a comma separated list.

Name	Allowed values	Default value
PHP_MODULES_ENABLE	comma separated list of module names	empty

Note

Currently only ioncube and blackfire are available to enable.

Example:

# Enable ionCube
PHP_MODULES_ENABLE=ioncube

# When enabling blackfire or ionCube you must also disable xdebug:
# https://xdebug.org/docs/install#compat
PHP_MODULES_DISABLE=xdebug

# Enable blackfire
PHP_MODULES_ENABLE=blackfire

# When enabling blackfire or ionCube you must also disable xdebug:
# https://xdebug.org/docs/install#compat
PHP_MODULES_DISABLE=xdebug

# Enable both, blackfire and ionCube
PHP_MODULES_ENABLE=blackfire,ioncube

# When enabling blackfire or ionCube you must also disable xdebug:
# https://xdebug.org/docs/install#compat
PHP_MODULES_DISABLE=xdebug

PHP_MODULES_DISABLE

Disable any PHP modules in a comma separated list.

Name	Allowed values	Default value
PHP_MODULES_DISABLE	comma separated list of module names	oci8,PDO_OCI,pdo_sqlsrv,sqlsrv,rdkafka,swoole

Example:

# Disable Xdebug, Imagick and Swoole
PHP_MODULES_DISABLE=xdebug,imagick,swoole

Custom variables

The PHP container itself does not offer any variables, however you can add any key-value pair variable into the .env file which will automatically be available to the started PHP container and thus in any of your PHP projects.

If your application requires a variable to determine if it is run under development or production, for example: APPLICATION_ENV, you can just add this to the .env file:

host> grep APPLICATION_ENV .env

APPLICATION_ENV=development

Within your php application/file you can then access this variable via the getenv function:

<?php
// Example use of getenv()
echo getenv('APPLICATION_ENV');
?>

This will then output development.

Note

Add as many custom environment variables as you require.

add_custom_environment_variables

Web server

HTTPD_DOCROOT_DIR

This variable specifies the name of a directory within each of your project directories from which the web server will serve the files.

Together with the env_httpd_datadir and your project directory, the HTTPD_DOCROOT_DIR will built up the final location of a virtual hosts document root.

Name	Allowed values	Default value
HTTPD_DOCROOT_DIR	valid dir name	htdocs

Example 1

• devilbox git directory location: /home/user-1/repo/devilbox
• HOST_PATH_HTTPD_DATADIR: ./data/www (relative)
• Project directory: my-first-project
• HTTPD_DOCROOT_DIR: htdocs

The location from where the web server will serve files for my-first-project is then: /home/user-1/repo/devilbox/data/www/my-first-project/htdocs

Example 2

• devilbox git directory location: /home/user-1/repo/devilbox
• HOST_PATH_HTTPD_DATADIR: /home/user-1/www (absolute)
• Project directory: my-first-project
• HTTPD_DOCROOT_DIR: htdocs

The location from where the web server will serve files for my-first-project is then: /home/user-1/www/my-first-project/htdocs

Directory structure: default

Let's have a look how the directory is actually built up:

# Project directory
host> ls -l data/www/my-first-project/
total 4
drwxr-xr-x 2 cytopia cytopia 4096 Mar 12 23:05 htdocs/

# htdocs directory inside your project directory
host> ls -l data/www/my-first-project/htdocs
total 4
-rw-r--r-- 1 cytopia cytopia 87 Mar 12 23:05 index.php

By calling your proect url, the index.php file will be served.

Directory structure: nested symlink

Most of the time you would clone or otherwise download a PHP framework, which in most cases has its own www directory somewhere nested. How can this be linked to the htdocs directory?

Let's have a look how the directory is actually built up:

# Project directory
host> ls -l data/www/my-first-project/
total 4
drwxr-xr-x 2 cytopia cytopia 4096 Mar 12 23:05 cakephp/
lrwxrwxrwx 1 cytopia cytopia   15 Mar 17 09:36 htdocs -> cakephp/webroot/

# htdocs directory inside your project directory
host> ls -l data/www/my-first-project/htdocs
total 4
-rw-r--r-- 1 cytopia cytopia 87 Mar 12 23:05 index.php

As you can see, the web server is still able to server the files from the htdocs location, this time however, htdocs itself is a symlink pointing to a much deeper and nested location inside an actual framework directory.

HTTPD_TEMPLATE_DIR

This variable specifies the directory name (which is just in your project directory, next to the HTTPD_DOCROOT_DIR directory) in which you can hold custom web server configuration files.

Every virtual host (which represents a project) can be fully customized to its own needs, independently of other virtual hosts.

This directory does not exist by default and you need to create it. Additionally you will also have to populate it with one of three yaml-based template files.

Name	Allowed values	Default value
HTTPD_TEMPLATE_DIR	valid dir name	.devilbox

Let's have a look at an imaginary project directory called my-first-project:

# Project directory
host> ls -l data/www/my-first-project/
total 4
drwxr-xr-x 2 cytopia cytopia 4096 Mar 12 23:05 htdocs/

Inside this your project directory you will need to create another directory which is called .devilbox by default. If you change the HTTPD_TEMPLATE_DIR variable to something else, you will have to create a directory by whatever name you chose for that variable.

# Project directory
host> cd data/www/my-first-project/
host> mkdir .devilbox
host> ls -l
total 4
drwxr-xr-x 2 cytopia cytopia 4096 Mar 12 23:05 .devilbox/
drwxr-xr-x 2 cytopia cytopia 4096 Mar 12 23:05 htdocs/

Now you need to copy the vhost-gen templates into the .devilbox directory. The templates are available in the Devilbox git directory under cfg/vhost-gen/.

By copying those files into your project template directory, nothing will change, these are the default templates that will create the virtual host exactly the same way as if they were not present.

# Navigate into the devilbox directory
host> cd path/to/devilbox

# Copy templates to your project directory
host> cp cfg/vhost-gen/*.yml data/www/my-first-project/.devilbox/

Let's have a look how the directory is actually built up:

# Project directory
host> ls -l data/www/my-first-project/
total 4
drwxr-xr-x 2 cytopia cytopia 4096 Mar 12 23:05 .devilbox/
drwxr-xr-x 2 cytopia cytopia 4096 Mar 12 23:05 htdocs/

# template directory inside your project directory
host> ls -l data/www/my-first-project/htdocs/.devilbox
total 4
-rw-r--r-- 1 cytopia cytopia 87 Mar 12 23:05 apache22.yml
-rw-r--r-- 1 cytopia cytopia 87 Mar 12 23:05 apache24.yml
-rw-r--r-- 1 cytopia cytopia 87 Mar 12 23:05 nginx.yml

The three files apache22.yml, apache24.yml and nginx.yml let you customize your web servers virtual host to anything from adding rewrite rules, overwriting directory index to even changing the server name or adding locations to other assets.

The whole process is based on a project called . A virtual host generator for Apache 2.2, Apache 2.4 and any Nginx version.

Customize your virtual host When you want to find out more how to actually customize each virtual host to its own need, read up more on:

• vhost-gen: vhost_gen_virtual_host_templates
• vhost-gen: vhost_gen_customize_all_virtual_hosts_globally
• vhost-gen: vhost_gen_customize_specific_virtual_host
• vhost-gen: vhost_gen_example_add_sub_domains

HTTPD_TIMEOUT_TO_PHP_FPM

This variable specifies after how many seconds the webserver should quit an unanswered connection to PHP-FPM.

Ensure that this value is higher than PHP's max_execution_time, otherwise the PHP script could still run and the webserver will simply drop the connection before getting an answer by PHP.

If HTTPD_TIMEOUT_TO_PHP_FPM is smaller then max_execution_time and a script runs longer than max_execution_time, you will get a: 504 Gateway timeout in the browser.

If HTTPD_TIMEOUT_TO_PHP_FPM is greater then max_execution_time and a script runs longer than max_execution_time, you will get a proper PHP error message in the browser.

Name	Allowed values	Default value
HTTPD_TIMEOUT_TO_PHP_FPM	positive integer	180

HTTPD_NGINX_WORKER_PROCESSES

Defines the number of worker processes for Nginx, i.e, the number of CPU cores.

The optimal value depends on many factors including (but not limited to) the number of CPU cores, the number of hard disk drives that store data, and load pattern. When one is in doubt, setting it to the number of available CPU cores would be a good start (the value “auto” will try to autodetect it).

Name	Allowed values	Default value
HTTPD_NGINX_WORKER_PROCESSES	positive integer | auto	auto

Note

This setting only applies to Nginx and has no effect for Apache.

https://nginx.org/en/docs/ngx_core_module.html#worker_processes

HTTPD_NGINX_WORKER_CONNECTIONS

Sets the maximum number of simultaneous connections that can be opened by a worker process.

It should be kept in mind that this number includes all connections (e.g. connections with proxied servers, among others), not only connections with clients. Another consideration is that the actual number of simultaneous connections cannot exceed the current limit on the maximum number of open files, which can be changed by worker_rlimit_nofile.

Name	Allowed values	Default value
HTTPD_NGINX_WORKER_CONNECTIONS	positive integer	1024

Note

This setting only applies to Nginx and has no effect for Apache.

https://nginx.org/en/docs/ngx_core_module.html#worker_connections

MySQL

MYSQL_ROOT_PASSWORD

If you start a MySQL container for the first time, it will setup MySQL itself with this specified password. If you do change the root password to something else, make sure to also set it accordingly in .env, otherwise the devilbox will not be able to connect to MySQL and will not be able to display information inside the bundled intranet.

Name	Allowed values	Default value
MYSQL_ROOT_PASSWORD	any string	empty (no password)

Warning

Keep this variable in sync with the actual MySQL root password.

PostgreSQL

PGSQL_ROOT_USER

If you start a PostgreSQL container for the first time, it will setup PostgreSQL itself with a specified username and password. If you do change the root username or password to something else, make sure to also set it accordingly in .env, otherwise the devilbox will not be able to connect to PostgreSQL and will not be able to display information inside the bundled intranet.

Name	Allowed values	Default value
PGSQL_ROOT_USER	alphabetical string	postgres

Warning

Keep this variable in sync with the actual PostgreSQL username.

PGSQL_ROOT_PASSWORD

If you start a PostgreSQL container for the first time, it will setup PostgreSQL itself with a specified username and password. If you do change the root username or password to something else, make sure to also set it accordingly in .env, otherwise the devilbox will not be able to connect to PostgreSQL and will not be able to display information inside the bundled intranet.

Name	Allowed values	Default value
PGSQL_ROOT_PASSWORD	any string	empty (no password)

Warning

Keep this variable in sync with the actual PostgreSQL password.

Redis

REDIS_ARGS

This option lets you add extra startup parameters to Redis. This could include adding a password protection to Redis or increasing its verbosity.

Name	Allowed values	Default value
REDIS_ARGS	valid redis-server startup parameter	empty

Example: Adding password protection

REDIS_ARGS=--requirepass my-redis-root-password

Important

Do not quote the password and do not use spaces inside the password.

Example: Increasing verbosity

REDIS_ARGS=--loglevel verbose

Example: Combining options

REDIS_ARGS=--loglevel verbose --requirepass my-redis-root-password

Bind

BIND_DNS_RESOLVER

This variable holds a comma separated list of IP addresses of DNS servers. By default using Google's DNS server as they are pretty fast.

Name	Allowed values	Default value
BIND_DNS_RESOLVER	comma separated list of IP addresses	8.8.8.8,8.8.4.4

The devilbox is using its own DNS server internally (your host computer can also use it for Auto-DNS) in order to resolve custom project domains defined by TLD_SUFFIX. To also be able to reach the internet from within the Container there must be some kind of upstream DNS server to ask for queries.

Some examples:

BIND_DNS_RESOLVER='8.8.8.8'
BIND_DNS_RESOLVER='8.8.8.8,192.168.0.10'

Note

If you don't trust the Google DNS server, then set it to something else. If you already have a DNS server inside your LAN and also want your custom DNS (if any) to be available inside the containers, set the value to its IP address.

BIND_DNSSEC_VALIDATE

This variable controls the DNSSEC validation of the DNS server. By default it is turned off.

Name	Allowed values	Default value
BIND_DNSSEC_VALIDATE	no, auto, yes	no

• yes - DNSSEC validation is enabled, but a trust anchor must be manually configured. No validation will actually take place.
• no - DNSSEC validation is disabled, and recursive server will behave in the "old fashioned" way of performing insecure DNS lookups, until you have manually configured at least one trusted key.
• auto - DNSSEC validation is enabled, and a default trust anchor (included as part of BIND) for the DNS root zone is used.

BIND_LOG_DNS

This variable controls if DNS queries should be shown in Docker log output or not. By default no DNS queries are shown.

Name	Allowed values	Default value
BIND_LOG_DNS	1 or 0	0

If enabled all DNS queries are shown. This is useful for debugging.

BIND_TTL_TIME

This variable controls the DNS TTL in seconds. If empty or removed it will fallback to a sane default.

Name	Allowed values	Default value
BIND_TTL_TIME	integer	empty

BIND_REFRESH_TIME

This variable controls the DNS Refresh time in seconds. If empty or removed it will fallback to a sane default.

Name	Allowed values	Default value
BIND_REFRESH_TIME	integer	empty

BIND_RETRY_TIME

This variable controls the DNS Retry time in seconds. If empty or removed it will fallback to a sane default.

Name	Allowed values	Default value
BIND_RETRY_TIME	integer	empty

BIND_EXPIRY_TIME

This variable controls the DNS Expiry time in seconds. If empty or removed it will fallback to a sane default.

Name	Allowed values	Default value
BIND_EXPIRY_TIME	integer	empty

BIND_MAX_CACHE_TIME

This variable controls the DNS Max Cache time in seconds. If empty or removed it will fallback to a sane default.

Name	Allowed values	Default value
BIND_MAX_CACHE_TIME	integer	empty