1.2 KiB
Install and configure dnsmasq with support for external DNS updates.
Leases are offered from IP ranges defined in NetBox with the role DHCP pool. For each range a prefix should be defined with the custom properties:
{
"gateway": <gateway IP address>,
"dhcp_ranges": <list of IP ranges>,
"dhcp_server": <server IP address>
}
To create a reservation for a device, ensure it has the primary IP address with the status DHCP inside some DHCP range. The primary MAC address of the corresponding interface should also be defined.
Custom reservations can also be specified in the local context of the DHCP server, for example:
{
"reservations": [
{ "host": "foo", "ip": "10.0.1.101", "mac": "12:23:34:45:56:67" },
{ "host": "bar", "ip": "10.0.2.102", "mac": "ab:bc:cd:de:ef:f0" },
…
]
}
For updating DNS records, a kerberos ticket is created at first setup and then renewed on updates. The password file should contain the keys ldap_user and ldap_pass to create the initial ticket.
The default dnsmasq leasefile implementation performs poorly with many entries on slow storage, so we replace it with an sqlite database.