apache2 Cookbook

This cookbook provides a complete Debian/Ubuntu style Apache HTTPD configuration. Non-Debian based distributions such as Red Hat/CentOS, ArchLinux and others supported by this cookbook will have a configuration that mimics Debian/Ubuntu style as it is easier to manage with Chef.

Debian-style Apache configuration uses scripts to manage modules and sites (vhosts). The scripts are:

a2ensite
a2dissite
a2enmod
a2dismod

This cookbook ships with templates of these scripts for non Debian/Ubuntu platforms. The scripts are used in the Definitions below.

Requirements

Ohai and Chef:

Ohai: 0.6.12+
Chef: 0.10.10+

As of v1.2.0, this cookbook makes use of node['platform_family'] to simplify platform selection logic. This attribute was introduced in Ohai v0.6.12. The recipe methods were introduced in Chef v0.10.10. If you must run an older version of Chef or Ohai, use version 1.1.16 of this cookbook.

Cookbooks:

This cookbook doesn't have direct dependencies on other cookbooks, as none are needed for the default recipe or the general use cases.

Depending on your OS configuration and security policy, you may need additional recipes or cookbooks for this cookbook's recipes to converge on the node. In particular, the following Operating System settings may affect the behavior of this cookbook:

apt cache outdated
SELinux enabled
IPtables
Compile tools
3rd party repositories

On Ubuntu/Debian, use Opscode's apt cookbook to ensure the package cache is updated so Chef can install packages, or consider putting apt-get in your bootstrap process or knife bootstrap template.

On RHEL, SELinux is enabled by default. The selinux cookbook contains a permissive recipe that can be used to set SELinux to "Permissive" state. Otherwise, additional recipes need to be created by the user to address SELinux permissions.

The easiest but certainly not ideal way to deal with IPtables is to flush all rules. Opscode does provide an iptables cookbook but is migrating from the approach used there to a more robust solution utilizing a general "firewall" LWRP that would have an "iptables" provider. Alternately, you can use ufw, with Opscode's ufw and firewall cookbooks to set up rules. See those cookbooks' READMEs for documentation.

Build/compile tools may not be installed on the system by default. Some recipes (e.g., apache2::mod_auth_openid) build the module from source. Use Opscode's build-essential cookbook to get essential build packages installed.

On ArchLinux, if you are using the apache2::mod_auth_openid recipe, you also need the pacman cookbook for the pacman_aur LWRP. Put recipe[pacman] on the node's expanded run list (on the node or in a role). This is not an explicit dependency because it is only required for this single recipe and platform; the pacman default recipe performs pacman -Sy to keep pacman's package cache updated.

The apache2::god_monitor recipe uses a definition from the god cookbook. Include recipe[god] in the node's expanded run list to ensure that the cookbook is available to the node, and to set up god.

Platforms:

The following platforms and versions are tested and supported using Opscode's test-kitchen.

Ubuntu 10.04, 12.04
CentOS 5.8, 6.3

The following platform families are supported in the code, and are assumed to work based on the successful testing on Ubuntu and CentOS.

Debian
Red Hat (rhel)
Fedora
Amazon Linux

The following platforms are also supported in the code, have been tested manually but are not tested under test-kitchen.

SUSE/OpenSUSE
ArchLinux
FreeBSD

Notes for RHEL Family:

On Red Hat Enterprise Linux and derivatives, the EPEL repository may be necessary to install packages used in certain recipes. The apache2::default recipe, however, does not require any additional repositories. Opscode's yum cookbook contains a recipe to add the EPEL repository. See Examples for more information.

Notes for FreeBSD:

The apache2::mod_php5 recipe depends on the freebsd cookbook, which it uses to set the correct options for compiling the php5 port from sources. You need to ensure the freebsd is in the expanded run list, or this recipe will fail. We don't set an explicit dependency because we feel the freebsd cookbook is something users would want on their nodes, and due to the generality of this cookbook we don't want additional specific dependencies.

Tests

This cookbook in the source repository contains minitest and cucumber tests. This is an initial proof of concept that will be fleshed out with more supporting infrastructure at a future time.

Please see the CONTRIBUTING file for information on how to add tests for your contributions.

Attributes

This cookbook uses many attributes, broken up into a few different kinds.

Platform specific

In order to support the broadest number of platforms, several attributes are determined based on the node's platform. See the attributes/default.rb file for default values in the case statement at the top of the file.

node['apache']['dir'] - Location for the Apache configuration
node['apache']['log_dir'] - Location for Apache logs
node['apache']['error_log'] - Location for the default error log
node['apache']['access_log'] - Location for the default access log
node['apache']['user'] - User Apache runs as
node['apache']['group'] - Group Apache runs as
node['apache']['binary'] - Apache httpd server daemon
node['apache']['icondir'] - Location for icons
node['apache']['cache_dir'] - Location for cached files used by Apache itself or recipes
node['apache']['pid_file'] - Location of the PID file for Apache httpd
node['apache']['lib_dir'] - Location for shared libraries
node['apache']['default_site_enabled'] - Default site enabled. Default is false.
node['apache']['ext_status'] - if true, enables ExtendedStatus for mod_status

General settings

These are general settings used in recipes and templates. Default values are noted.

node['apache']['listen_addresses'] - Addresses that httpd should listen on. Default is any ("*").
node['apache']['listen_ports'] - Ports that httpd should listen on. Default is port 80.
node['apache']['contact'] - Value for ServerAdmin directive. Default "[email protected]".
node['apache']['timeout'] - Value for the Timeout directive. Default is 300.
node['apache']['keepalive'] - Value for the KeepAlive directive. Default is On.
node['apache']['keepaliverequests'] - Value for MaxKeepAliveRequests. Default is 100.
node['apache']['keepalivetimeout'] - Value for the KeepAliveTimeout directive. Default is 5.
node['apache']['default_modules'] - Array of module names. Can take "mod_FOO" or "FOO" as names, where FOO is the apache module, e.g. "mod_status" or "status".

The modules listed in default_modules will be included as recipes in recipe[apache::default].

Prefork attributes

Prefork attributes are used for tuning the Apache HTTPD prefork MPM configuration.

node['apache']['prefork']['startservers'] - initial number of server processes to start. Default is 16.
node['apache']['prefork']['minspareservers'] - minimum number of spare server processes. Default 16.
node['apache']['prefork']['maxspareservers'] - maximum number of spare server processes. Default 32.
node['apache']['prefork']['serverlimit'] - upper limit on configurable server processes. Default 400.
node['apache']['prefork']['maxclients'] - Maximum number of simultaneous connections.
node['apache']['prefork']['maxrequestsperchild'] - Maximum number of request a child process will handle. Default 10000.

Worker attributes

Worker attributes are used for tuning the Apache HTTPD worker MPM configuration.

node['apache']['worker']['startservers'] - Initial number of server processes to start. Default 4
node['apache']['worker']['serverlimit'] - upper limit on configurable server processes. Default 16.
node['apache']['worker']['maxclients'] - Maximum number of simultaneous connections. Default 1024.
node['apache']['worker']['minsparethreads'] - Minimum number of spare worker threads. Default 64
node['apache']['worker']['maxsparethreads'] - Maximum number of spare worker threads. Default 192.
node['apache']['worker']['maxrequestsperchild'] - Maximum number of requests a child process will handle.

mod_auth_openid attributes

The following attributes are in the attributes/mod_auth_openid.rb file. Like all Chef attributes files, they are loaded as well, but they're logistically unrelated to the others, being specific to the mod_auth_openid recipe.

node['apache']['mod_auth_openid']['checksum'] - sha256sum of the tarball containing the source.
node['apache']['mod_auth_openid']['ref'] - Any sha, tag, or branch found from https://github.com/bmuller/mod_auth_openid
node['apache']['mod_auth_openid']['cache_dir'] - the cache directory is where the sqlite3 database is stored. It is separate so it can be managed as a directory resource.
node['apache']['mod_auth_openid']['dblocation'] - filename of the sqlite3 database used for directive AuthOpenIDDBLocation, stored in the cache_dir by default.
node['apache']['mod_auth_openid']['configure_flags'] - optional array of configure flags passed to the ./configure step in the compilation of the module.

mod_ssl attributes

node['apache']['mod_ssl']['cipher_suite'] - sets the SSLCiphersuite value to the specified string. The default is considered "sane" but you may need to change it for your local security policy, e.g. if you have PCI-DSS requirements. Additional commentary on the original pull request.

Recipes

Most of the recipes in the cookbook are for enabling Apache modules. Where additional configuration or behavior is used, it is documented below in more detail.

The following recipes merely enable the specified module: mod_alias, mod_basic, mod_digest, mod_authn_file, mod_authnz_ldap, mod_authz_default, mod_authz_groupfile, mod_authz_host, mod_authz_user, mod_autoindex, mod_cgi, mod_dav_fs, mod_dav_svn, mod_deflate, mod_dir, mod_env, mod_expires, mod_headers, mod_ldap, mod_log_config, mod_mime, mod_negotiation, mod_proxy, mod_proxy_ajp, mod_proxy_balancer, mod_proxy_connect, mod_proxy_http, mod_python, mod_rewrite, mod_setenvif, mod_status, mod_wsgi, mod_xsendfile.

On RHEL Family distributions, certain modules ship with a config file with the package. The recipes here may delete those configuration files to ensure they don't conflict with the settings from the cookbook, which will use per-module configuration in /etc/httpd/mods-enabled.

default

The default recipe does a number of things to set up Apache HTTPd. It also includes a number of modules based on the attribute node['apache']['default_modules'] as recipes.

logrotate

Logrotate adds a logrotate entry for your apache2 logs. This recipe requires the logrotate cookbook; ensure that recipe[logrotate] is in the node's expanded run list.

mod_auth_cas

This recipe installs the proper package and enables the auth_cas module. It can install from source or package. Package is the default, set the attribute node['apache']['mod_auth_cas']['from_source'] to true to enable source installation. Modify the version to install by changing the attribute node['apache']['mod_auth_cas']['source_revision']. It is a version tag by default, but could be master, or another tag, or branch.

The module configuration is written out with the CASCookiePath set, otherwise an error loading the module may cause Apache to not start.

Note: This recipe does not work on EL 6 platforms unless epel-testing repository is enabled (outside the scope of this cookbook), or the package version 1.0.8.1-3.el6 or higher is otherwise available to the system due to this bug:

https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=708550

mod_auth_openid

Changed via COOK-915

This recipe compiles the module from source. In addition to build-essential, some other packages are included for installation like the GNU C++ compiler and development headers.

To use the module in your own cookbooks to authenticate systems using OpenIDs, specify an array of OpenIDs that are allowed to authenticate with the attribute node['apache']['allowed_openids']. Use the following in a vhost to protect with OpenID authentication:

AuthType OpenID require user <%= node['apache']['allowed_openids'].join(' ') %>
AuthOpenIDDBLocation <%= node['apache']['mod_auth_openid']['dblocation'] %>

Change the DBLocation with the attribute as required; this file is in a different location than previous versions, see below. It should be a sane default for most platforms, though, see attributes/mod_auth_openid.rb.

Changes from COOK-915:

AuthType OpenID instead of AuthOpenIDEnabled On.
require user instead of AuthOpenIDUserProgram.
A bug(?) in mod_auth_openid causes it to segfault when attempting to update the database file if the containing directory is not writable by the HTTPD process owner (e.g., www-data), even if the file is writable. In order to not interfere with other settings from the default recipe in this cookbook, the db file is moved.

mod_fastcgi

Install the fastcgi package and enable the module.

Only work on Debian/Ubuntu

mod_fcgid

Installs the fcgi package and enables the module. Requires EPEL on RHEL family.

On RHEL family, this recipe will delete the fcgid.conf and on version 6+, create the /var/run/httpd/mod_fcgid` directory, which prevents the emergency error:

[emerg] (2)No such file or directory: mod_fcgid: Can't create shared memory for size XX bytes

mod_php5

Simply installs the appropriate package on Debian, Ubuntu and ArchLinux.

On Red Hat family distributions including Fedora, the php.conf that comes with the package is removed. On RHEL platforms less than v6, the php53 package is used.

mod_ssl

Besides installing and enabling mod_ssl, this recipe will append port 443 to the node['apache']['listen_ports'] attribute array and update the ports.conf.

god_monitor

Sets up a god monitor for Apache. External requirements are the god and runit cookbooks from Opscode. When using this recipe, include recipe[god] in the node's expanded run list to ensure the client downloads it; god depends on runit so that will also be downloaded.

Note This recipe is not tested under test-kitchen yet and is pending fix in COOK-744.

Definitions

The cookbook provides a few definitions. At some point in the future these definitions may be refactored into lightweight resources and providers as suggested by foodcritic rule FC015.

apache_conf

Sets up configuration file for an Apache module from a template. The template should be in the same cookbook where the definition is used. This is used by the apache_module definition and is not often used directly.

This will use a template resource to write the module's configuration file in the mods-available under the Apache configuration directory (node['apache']['dir']). This is a platform-dependent location. See apache_module.

Parameters:

name - Name of the template. When used from the apache_module, it will use the same name as the module.

Examples:

Create #{node['apache']['dir']}/mods-available/alias.conf.

apache_conf "alias"

apache_module

Enable or disable an Apache module in #{node['apache']['dir']}/mods-available by calling a2enmod or a2dismod to manage the symbolic link in #{node['apache']['dir']}/mods-enabled. If the module has a configuration file, a template should be created in the cookbook where the definition is used. See Examples.

Parameters:

name - Name of the module enabled or disabled with the a2enmod or a2dismod scripts.
identifier - String to identify the module for the LoadModule directive. Not typically needed, defaults to #{name}_module
enable - Default true, which uses a2enmod to enable the module. If false, the module will be disabled with a2dismod.
conf - Default false. Set to true if the module has a config file, which will use apache_conf for the file.
filename - specify the full name of the file, e.g.

Examples:

Enable the ssl module, which also has a configuration template in templates/default/mods/ssl.conf.erb.

apache_module "ssl" do
  conf true
end

Enable the php5 module, which has a different filename than the module default:

apache_module "php5" do
  filename "libphp5.so"
end

Disable a module:

apache_module "disabled_module" do
  enable false
end

See the recipes directory for many more examples of apache_module.

apache_site

Enable or disable a VirtualHost in #{node['apache']['dir']}/sites-available by calling a2ensite or a2dissite to manage the symbolic link in #{node['apache']['dir']}/sites-enabled.

The template for the site must be managed as a separate resource. To combine the template with enabling a site, see web_app.

Parameters:

name - Name of the site.
enable - Default true, which uses a2ensite to enable the site. If false, the site will be disabled with a2dissite.

web_app

Manage a template resource for a VirtualHost site, and enable it with apache_site. This is commonly done for managing web applications such as Ruby on Rails, PHP or Django, and the default behavior reflects that. However it is flexible.

This definition includes some recipes to make sure the system is configured to have Apache and some sane default modules:

apache2
apache2::mod_rewrite
apache2::mod_deflate
apache2::mod_headers

It will then configure the template (see Parameters and Examples below), and enable or disable the site per the enable parameter.

Parameters:

Current parameters used by the definition:

name - The name of the site. The template will be written to #{node['apache']['dir']}/sites-available/#{params['name']}.conf
cookbook - Optional. Cookbook where the source template is. If this is not defined, Chef will use the named template in the cookbook where the definition is used.
template - Default web_app.conf.erb, source template file.
enable - Default true. Passed to the apache_site definition.

Additional parameters can be defined when the definition is called in a recipe, see Examples.

Examples:

All parameters are passed into the template. You can use whatever you like. The apache2 cookbook comes with a web_app.conf.erb template as an example. The following parameters are used in the template:

server_name - ServerName directive.
server_aliases - ServerAlias directive. Must be an array of aliases.
docroot - DocumentRoot directive.
application_name - Used in RewriteLog directive. Will be set to the name parameter.
directory_index - Allow overriding the default DirectoryIndex setting, optional
directory_options - Override Options on the docroot, for example to add parameters like Includes or Indexes, optional.
allow_override - Modify the AllowOverride directive on the docroot to support apps that need .htaccess to modify configuration or require authentication.

To use the default web_app, for example:

web_app "my_site" do
  server_name node['hostname']
  server_aliases [node['fqdn'], "my-site.example.com"]
  docroot "/srv/www/my_site"
end

The parameters specified will be used as:

@params[:server_name]
@params[:server_aliases]
@params[:docroot]

In the template. When you write your own, the @ is significant.

For more information about Definitions and parameters, see the Chef Wiki

Usage

Using this cookbook is relatively straightforward. Add the desired recipes to the run list of a node, or create a role. Depending on your environment, you may have multiple roles that use different recipes from this cookbook. Adjust any attributes as desired. For example, to create a basic role for web servers that provide both HTTP and HTTPS:

% cat roles/webserver.rb
name "webserver"
description "Systems that serve HTTP and HTTPS"
run_list(
  "recipe[apache2]",
  "recipe[apache2::mod_ssl]"
)
default_attributes(
  "apache" => {
    "listen_ports" => ["80", "443"]
  }
)

For examples of using the definitions in your own recipes, see their respective sections above.

License and Authors

Author:: Adam Jacob [email protected]
Author:: Joshua Timberman [email protected]
Author:: Bryan McLellan [email protected]
Author:: Dave Esposito [email protected]
Author:: David Abdemoulaie [email protected]
Author:: Edmund Haselwanter [email protected]
Author:: Eric Rochester [email protected]
Author:: Jim Browne [email protected]
Author:: Matthew Kent [email protected]
Author:: Nathen Harvey [email protected]
Author:: Ringo De Smet [email protected]
Author:: Sean OMeara [email protected]
Author:: Seth Chisamore [email protected]
Author:: Gilles Devaux [email protected]

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Name		Name	Last commit message	Last commit date
Latest commit History 418 Commits
attributes		attributes
definitions		definitions
files/default		files/default
recipes		recipes
spec		spec
templates/default		templates/default
test		test
.gitignore		.gitignore
.rubocop.yml		.rubocop.yml
.travis.yml		.travis.yml
Berksfile		Berksfile
CHANGELOG.md		CHANGELOG.md
CONTRIBUTING.md		CONTRIBUTING.md
Gemfile		Gemfile
LICENSE		LICENSE
README.md		README.md
TESTING.md		TESTING.md
metadata.rb		metadata.rb

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apache2 Cookbook

Requirements

Ohai and Chef:

Cookbooks:

Platforms:

Notes for RHEL Family:

Notes for FreeBSD:

Tests

Attributes

Platform specific

General settings

Prefork attributes

Worker attributes

mod_auth_openid attributes

mod_ssl attributes

Recipes

default

logrotate

mod_auth_cas

mod_auth_openid

Changes from COOK-915:

mod_fastcgi

mod_fcgid

mod_php5

mod_ssl

god_monitor

Definitions

apache_conf

Parameters:

Examples:

apache_module

Parameters:

Examples:

apache_site

Parameters:

web_app

Parameters:

Examples:

Usage

License and Authors

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