roles/dhcpd/templates/dhcpd.conf.j2

# dhcpd.conf
# Managed by Ansible!

{% if dns_search %}
option domain-name "{{ dns_search[0] }}";
option domain-search "{{ dns_search | join('", "') }}";
{% endif %}

{% if dns_servers %}
option domain-name-servers {{ dns_servers | join(", ") }};
{% endif %}

{% for subnet in dhcpd_subnets %}
subnet {{ subnet.cidr | ipaddr('network') }} netmask {{ subnet.cidr | ipaddr('netmask') }} {
  option routers {{ subnet.router | default(subnet.cidr | ipaddr('1') | ipaddr('address')) }};
  range {{ subnet.cidr | ipaddr(subnet.dhcp_first | default("129")) | ipaddr('address') }} {{ subnet.cidr | ipaddr(subnet.dhcp_last | default("254")) | ipaddr('address') }};
{% if subnet.dns_search is defined %}
  option domain-name {{ subnet.dns_search [0] }};
  option domain-search {{ subnet.dns_search| join(", ") }};
{% endif %}
{% if subnet.dns_servers is defined %}
  option domain-name-servers {{ subnet.dns_servers | join(", ") }};
{% endif %}
  default-lease-time {{ subnet.lease_time | default("240") }};
  max-lease-time {{ subnet.max_lease_time | default("480") }};
{% if subnet.pxe_filename is defined %}
  filename "{{ subnet.pxe_filename }}";
  next-server {{ subnet.tftp_server | default(subnet.cidr | ipaddr('1') | ipaddr('address')) }};
{% endif %}
{% if subnet.static_nodes is defined %}
  # hosts from list: static_nodes
{% for node in subnet.static_nodes %}
  host {{ node.name }} {
    option host-name "{{ node.name }}";
{% set host_ipaddr = (subnet.cidr | ipaddr(node.ipv4_last_octet) | ipaddr('address')) %}
    fixed-address {{ host_ipaddr }};
    hardware ethernet {{ node.hwaddr | default(hwaddr_prefix ~ (host_ipaddr | ip4_hex)) | hwaddr('unix') }};
{% if node.pxe_filename is defined %}
    filename "{{ node.pxe_filename }}";
    next-server {{ subnet.tftp_server | default(subnet.cidr | ipaddr('1') | ipaddr('address')) }};
{% endif %}
  }
{% endfor %}
{% endif %}
{% if subnet.other_static is defined %}
{% for hostlist in subnet.other_static %}
  # hosts from list: {{ hostlist }}
{% set nodes = vars[hostlist] %}
{% for node in nodes %}
  host {{ node.name }} {
    option host-name "{{ node.name }}";
{% set host_ipaddr = (subnet.cidr | ipaddr(node.ipv4_last_octet) | ipaddr('address')) %}
    fixed-address {{ host_ipaddr }};
    hardware ethernet {{ node.hwaddr | default(hwaddr_prefix ~ (host_ipaddr | ip4_hex)) | hwaddr('unix') }};
{% if node.pxe_filename is defined %}
    filename "{{ subnet.pxe_filename }}";
    next-server {{ subnet.tftp_server | default(subnet.cidr | ipaddr('1') | ipaddr('address')) }};
{% endif %}
  }
{% endfor %}
{% endfor %}
{% endif %}
}

{% endfor %}