dhcpd: Install and configure ISC DHCPD

dhcpd.yml

@@ -0,0 +1,3 @@
+- hosts: dhcpd
+  roles:
+  - dhcpd

roles/dhcpcd/tasks/main.yml

@@ -2,6 +2,8 @@
   package:
     name=dhcpcd
     state=present
+  tags:
+  - install
 
 - name: ensure dhcpcd is configured
   template:

roles/dhcpd/defaults/main.yml

@@ -0,0 +1,9 @@
+dhcp_interfaces: []
+dhcp_ddns: false
+dhcp_subnets: []
+dhcp_reservations: []
+dhcp_default_lease: 43200
+dhcp_max_lease: 86400
+dhcp_need_interfaces: '{{ dhcp_interfaces }}'
+default_dyn_hostname_prefix: host-
+dhcp_ddns_zones: []

roles/dhcpd/handlers/main.yml

@@ -0,0 +1,6 @@
+- name: restart dhcpd
+  service: name=dhcpd
+           state=restarted
+- name: restart dhcpd6
+  service: name=dhcpd6
+           state=restarted

roles/dhcpd/tasks/main.yml

@@ -0,0 +1,30 @@
+- name: ensure dhcpd is installed
+  package:
+    name=dhcp-server
+    state=present
+  tags:
+  - install
+
+- name: ensure dhcpd service is configured
+  template:
+    src=dhcpd.confd.j2
+    dest=/etc/conf.d/dhcpd
+    mode=0644
+  when: ansible_distribution == 'Gentoo'
+  notify: restart dhcpd
+- name: ensure dhcpd is configured
+  template:
+    src=dhcpd.conf.j2
+    dest=/etc/dhcp/dhcpd.conf
+    mode=0644
+  notify: restart dhcpd
+
+- name: ensure dhcpd starts at boot
+  service:
+    name=dhcpd
+    enabled=yes
+- meta: flush_handlers
+- name: ensure dhcpd is running
+  service:
+    name=dhcpd
+    state=started

roles/dhcpd/templates/dhcpd.conf.j2

@@ -0,0 +1,93 @@
+# vim: set ft=dhcpd :
+{# vim: set ft=jinja : #}
+
+{% if dhcp_domain_name is defined %}
+option domain-name "{{ dhcp_domain_name }}";
+{% endif %}
+{% if dhcp_dns_servers is defined %}
+option domain-name-servers {{ dhcp_dns_servers|join(', ') }};
+{% endif %}
+{% if dhcp_ntp_servers is defined %}
+option ntp-servers {{ dhcp_ntp_servers|join(', ') }};
+{% endif %}
+
+authoritative;
+{% if dhcp_ddns %}
+
+ddns-updates on;
+ddns-update-style interim;
+update-static-leases on;
+allow client-updates;
+{% endif %}
+{% for subnet in dhcp_subnets %}
+
+subnet {{ subnet.address|ipv4('network') }} netmask {{ subnet.address|ipv4('netmask') }} {
+{% if subnet.pools is defined %}
+{% for range in subnet.pools %}
+    range {{ range.start }} {{ range.end }};
+{% endfor %}
+{% endif %}
+    default-lease-time {{ subnet.default_lease|d(dhcp_default_lease) }};
+    max-lease-time {{ subnet.max_lease|d(dhcp_max_lease) }};
+{% if subnet.routers is defined %}
+    option routers {{ subnet.routers|join(' ') }};
+{% endif %}
+{% if subnet.domain_name is defined %}
+    option domain-name "{{ subnet.domain_name }}";
+{% endif %}
+{% if subnet.domain_search is defined %}
+    option domain-search "{{ subnet.domain_search }}";
+{% endif %}
+{% if subnet.dns_servers is defined %}
+    option domain-name-servers {{ subnet.dns_servers|join(', ') }};
+{% endif %}
+{% if subnet.ntp_servers is defined %}
+    option ntp-servers {{ subnet.ntp_servers|join(', ') }};
+{% endif %}
+{% if subnet.next_server is defined %}
+    next-server {{ subnet.next_server }};
+{% if subnet.boot_filename is defined %}
+    filename "{{ subnet.boot_filename }}";
+{% endif %}
+{% endif %}
+{% if subnet.dynamic_hostnames|d|bool %}
+    option host-name = {{ dyn_hostname_expr.format(prefix=subnet.dyn_hostname_prefix|d(default_dyn_hostname_prefix)) }};
+    ddns-hostname = {{ dyn_hostname_expr.format(prefix=subnet.dyn_hostname_prefix|d(default_dyn_hostname_prefix)) }};
+{% endif %}
+}
+{% endfor %}
+{% if dhcp_ddns %}
+{% for key in dhcp_ddns_keys %}
+
+key {{ key.name }} {
+    algorithm {{ key.algorithm|d('hmac-md5') }};
+    secret "{{ key.secret }}";
+}
+{% endfor %}
+{% for zone in dhcp_ddns_zones %}
+
+zone {{ zone.zone }}. {
+    primary {{ zone.primary }};
+{% if zone.key is defined %}
+    key {{ zone.key }};
+{% endif %}
+}
+{% endfor %}
+{% endif %}
+{% for res in dhcp_reservations %}
+
+host {{ res.host }} {
+{% if res.mac_addr is defined %}
+    hardware ethernet {{ res.mac_addr }};
+{% elif res.duid is defined %}
+    host-identifier option dhcp-client-identifier {{ res.duid }};
+{% endif %}
+{% if res.ip_addr is defined %}
+    fixed-address {{ res.ip_addr }};
+{% endif %}
+{% if res.hostname is defined %}
+    option host-name "{{ res.hostname }}";
+    ddns-hostname "{{ res.hostname }}";
+{% endif %}
+}
+{% endfor %}

roles/dhcpd/templates/dhcpd.confd.j2

@@ -0,0 +1,29 @@
+# /etc/conf.d/dhcpd: config file for /etc/init.d/dhcpd
+
+# If you require more than one instance of dhcpd you can create symbolic
+# links to dhcpd service like so
+#   cd /etc/init.d
+#   ln -s dhcpd dhcpd.foo
+#   cd ../conf.d
+#   cp dhcpd dhcpd.foo
+# Now you can edit dhcpd.foo and specify a different configuration file.
+# You'll also need to specify a pidfile in that dhcpd.conf file.
+# See the pid-file-name option in the dhcpd.conf man page for details.
+
+# If you wish to run dhcpd in a chroot, uncomment the following line
+# DHCPD_CHROOT="/var/lib/dhcp/chroot"
+
+# All file paths below are relative to the chroot.
+# You can specify a different chroot directory but MAKE SURE it's empty.
+
+# Specify a configuration file - the default is /etc/dhcp/dhcpd.conf
+# DHCPD_CONF="/etc/dhcp/dhcpd.conf"
+
+# Configure which interface or interfaces to for dhcpd to listen on.
+# List all interfaces space separated. If this is not specified then
+# we listen on all interfaces.
+DHCPD_IFACE="{{ dhcp_interfaces|join(' ') }}"
+
+# Insert any other dhcpd options - see the man page for a full list.
+# DHCPD_OPTS=""
+rc_need="!net {% for i in dhcp_need_interfaces %}net.{{ i }}{% if not loop.last %} {% endif %}{% endfor %}"

roles/dhcpd/vars/main.yml

@@ -0,0 +1,10 @@
+dyn_hostname_expr: >-
+  pick(option fqdn.hostname, option host-name,
+  concat("{prefix}", concat(
+  suffix(concat("0", binary-to-ascii(16, 8, "", substring(hardware, 1, 1))), 2),
+  suffix(concat("0", binary-to-ascii(16, 8, "", substring(hardware, 2, 1))), 2),
+  suffix(concat("0", binary-to-ascii(16, 8, "", substring(hardware, 3, 1))), 2),
+  suffix(concat("0", binary-to-ascii(16, 8, "", substring(hardware, 4, 1))), 2),
+  suffix(concat("0", binary-to-ascii(16, 8, "", substring(hardware, 5, 1))), 2),
+  suffix(concat("0", binary-to-ascii(16, 8, "", substring(hardware, 6, 1))), 2)
+  )))