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bind (17) Versions 1.0.2

Installs/Configures ISC BIND

Berkshelf/Librarian
Policyfile
Knife
cookbook 'bind', '= 1.0.2'
cookbook 'bind', '= 1.0.2', :supermarket
knife cookbook site install bind
knife cookbook site download bind
README
Dependencies
Quality

Bind Build Status

Description

A cookbook to manage bind DNS servers, and zones.

Requirements

Included ldap2zone recipe depends on Chef 0.10.10 features, such as chef_gem.

The net-ldap v0.2.2 Ruby gem is required for the ldap2zone recipe.

Attributes

Attributes which probably require tuning

  • bind['masters']

    • Array of authoritative servers which you transfer zones from.
    • Default empty
  • bind['ipv6_listen']

    • Boolean, whether BIND should listen on ipv6
    • Default is false
  • bind['acl-role']

    • Search key for pulling split-domain ACLs out of data_bags
    • Defaults to internal-acl, and has no effect if you do not need ACLs.
  • bind['acl']

    • An array node attribute which data_bag ACLs are pushed on to, and then passed to named.options template.
    • Default is an empty array.
  • bind['zones']['attribute']

    • An array attribute where zone names may be set from role attributes. The dynamic source attributes bind['zones']['ldap'] and bind['zones']['databag'] will be combined with zone names set via role attributes before the named.conf template is rendered.
  • bind['zones']['ldap']

    • An array attribute where zone names may be set from an ldap source.
  • bind['zones']['databag']

    • An array attribute where zone names may be set from a databag source.
  • bind['zonetype']

    • The zone type, master, or slave for configuring the named.conf template.
    • Defaults to slave
  • bind['zonesource']

    • The external zone data source, included examples are databag or ldap
    • Defaults to databag. Should have no effect if no zone names exist in the bind data_bag.
  • bind['options']

    • Free form options for named.conf template
    • Defaults to an empty array.
  • bind['allow_solo_search']

    • Boolean true/false, enabling chef-solo search
    • Defaults to false
  • bind['enable_log']

    • Boolean, toggle bind query logging. Note this applies only to a dedicated log, such as a query log. i.e. bind may still log to the messages/kernel log if configured to do so with syslog.
    • Default to false
  • bind['log_file']

    • Absolute path to bind log file, assuming directory exists. Again, this has no effect on syslog configuration.
    • Default to /var/log/bind9/query.log
  • `bind['statistics-channel']

    • Boolean to enable a statistics-channel on a TCP port.
    • Default, platform-specific
  • `bind['statistics-port']

    • Integer for statistics-channel TCP port.
    • Default, 8080

Attributes which should not require tuning

  • bind['packages']

    • packages to install
    • Platform specific defaults
  • bind['sysconfdir']

    • etc directory for named
    • Platform specific defaults
  • bind['conf_file']

    • Full path to named.conf
    • Platform specific defaults
  • bind['options_file']

    • Full path to named.options
    • Platform specific defaults
  • bind['vardir']

    • var directory for named to write state data, such as zone files.
    • Platform specific defaults
  • bind['included_files']

    • Files to be included in named.conf, relative to sysconf (/etc/named, /etc/bind) directory. You could, for example, drop off other static files or templates in your sysconf directory. Then include them in your named.conf by overriding this attribute.
    • Defaults to named.rfc1912.zones, and named.options
  • bind['var_cookbook_files']

    • static cookbook files to drop off in var directory
    • defaults to named.empty, named.ca, named.loopback, and named.localhost
  • bind['rndc_keygen']

    • command to generate rndc key
    • default depends on hardware/hypervisor platform
  • bind['log_options']

    • Array listing all specific bind logging options
    • default is empty
  • bind['rndc-key']

    • Location which rndc.key gets created by rndc-confgen

ldap2zone recipe specific attributes

We store our zone names on Active Directory, and use Ruby to pull these into Chef and configure our Linux BIND servers. If you already have Active Directory, chances are you have an authoritative data source for zone names in LDAP and can use this recipe to query this data, just by setting a few attributes in a role.

  • bind['ldap']['binddn']

    • The binddn username for connecting to LDAP
    • Default nil
  • bind['ldap']['bindpw']

    • The binddn password for connecting to LDAP
    • Default nil
  • bind['ldap']['filter']

    • The LDAP object filter for zone names
    • Defaults to dnsZone class, excluding Root DNS Servers
  • bind['ldap'][server']

    • The authoritative directory server for your domain
    • Defaults to nil
  • bind['ldap']['domainzones']

    • The LDAP tree where your domain zones are located
    • Defaults to the Active Directory zone tree for example.com.

Usage

Notes on the zonesource recipes

The databag2zone and ldap2zone is optional code to fetch DNS zones from a data bag, or Active Directory integrated domain controllers. If you have a proper IP address management (IPAM) solution, you could drop in your own code to query an API on your IPAM server.

Any query should use the << operator to push results on to the bind['zones'] array. Drop your query code in a recipe named query2zone.rb, for example. Then include the API query by overriding the attribute bind['zonesource'] set to the string query.

Alternatively, you can just use an override['bind']['zones'] in a role or environment instead. Or even a mix of both override attributes, and an API query to populate zones.

Example role for internal recursing DNS

An example wrapper cookbook for an internal split-horizon BIND server for example.com, might look like so:

# Configure and install Bind to function as an internal DNS server."
# attributes/default.rb
include_attribute 'bind'
default['bind']['acl-role'] = 'internal-acl'
default['bind']['masters'] = %w(192.0.2.10 192.0.2.11 192.0.2.12)
default['bind']['ipv6_listen'] = true
default['bind']['zonetype'] = 'slave'
default['bind']['zonesource'] = 'ldap'
default['bind']['zones']['attribute'] = %w(example.com example.org)
default['bind']['ldap'] = {
  server: 'example.com',
  binddn: 'cn=chef-ldap,ou=Service Accounts,dc=example,dc=com',
  bindpw: 'ServiceAccountPassword',
  domainzones: 'cn=MicrosoftDNS,dc=DomainDnsZones,dc=example,dc=com'
}
default['bind']['options'] = [
  'check-names slave ignore;',
  'multi-master yes;',
  'provide-ixfr yes;',
  'recursive-clients 10000;',
  'request-ixfr yes;',
  'allow-notify { acl-dns-masters; acl-dns-slaves; };',
  'allow-query { example-lan; localhost; };',
  'allow-query-cache { example-lan; localhost; };',
  'allow-recursion { example-lan; localhost; };',
  'allow-transfer { acl-dns-masters; acl-dns-slaves; };',
  'allow-update-forwarding { any; };',
]

# recipes/default.rb
include_recipe 'bind'

Example role for authoritative only external DNS

An example wrapper cookbook for an external split-horizon authoritative only BIND server for example.com, might look like so:

# Configure and install Bind to function as an external DNS server."
# attributes/default.rb
include_attribute 'bind'
default['bind']['acl-role'] = 'external-acl'
default['bind']['masters'] = %w(192.0.2.5 192.0.2.6)
default['bind']['ipv6_listen'] = true
default['bind']['zonetype'] = 'master'
default['bind']['zones']['attribute'] = %w(example.com example.org) 
default['bind']['options'] = [
  'recursion no;',
  'allow-query { any; };',
  'allow-transfer { external-private-interfaces; external-dns; };',
  'allow-notify { external-private-interfaces; external-dns; localhost; };',
  'listen-on-v6 { any; };'
]

# recipes/default.rb
include_recipe 'bind'

Example BIND Access Controls from data bag

In order to include an external ACL for the private interfaces of your external nameservers, you can create a data bag like so.

  • data_bag name: bind
    • id: ACL entry name
    • role: search key for bind data_bag
    • hosts: array of CIDR addresses, or IP addresses
{
  "id": "external-private-interfaces",
  "role": "external-acl",
  "hosts": [ "192.0.2.15", "192.0.2.16", "192.0.2.17" ]
}

In order to include an internal ACL for the query addresses of your LAN, you might create a data bag like so.

  • data_bag name: bind
    • id: ACL entry name
    • role: search key for bind data_bag
    • hosts: array of CIDR addresses, or IP addresses
{
  "id": "example-lan",
  "role": "internal-acl",
  "hosts": [ "192.0.2.18", "192.0.2.19", "192.0.2.20" ]
}

Example to load zone names from data bag

If you have a few number of zones, you can split these up into individual data bag objects if you prefer.

  • data_bag name: bind
    • zone: string representation of individual zone name.
{
  "id": "example",
  "zone": "example.com"
}

If you wish to group a number of zones together, you can use the following format to include a number of zones at once.

  • data_bag name: bind
    • zones: array representation of several zone names.
{
  "id": "example",
  "zones": [ "example.com", "example.org" ]
}

License and Author

Copyright: 2011 Eric G. Wolfe

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.

Dependent cookbooks

This cookbook has no specified dependencies.

Contingent cookbooks

foreman Applicable Versions
ldap2zone Applicable Versions

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