kea/doc/examples/kea4/backends.json

// This is an example configuration file for the DHCPv4 server in Kea.
// It is a basic scenario with one IPv4 subnet configured. It demonstrates
// how to configure Kea to use various backends to store leases:
// - memfile
// - MySQL
// - PostgreSQL
// - CQL (Cassandra) backend

{ "Dhcp4":

{
// Kea is told to listen on ethX interface only.
  "interfaces-config": {
    "interfaces": [ "ethX" ]
  },

// We need to specify lease type. Exactly one lease-database section
// should be present. Make sure you uncomment only one.

// 1. memfile backend. Leases information will be stored in flat CSV file.
// This is the easiest backend to use as it does not require any extra
// dependencies or services running.
//  "lease-database": {
//      "type": "memfile",
//      "persist": true,
//      "lfc-interval": 3600
//  },

// 2. MySQL backend. Leases will be stored in MySQL database. Make sure it
// is up, running and properly initialized. See kea-admin documentation
// for details on how to initialize the database. The only strictly required
// parameters are type and name. If other parameters are not specified,
// Kea will assume the database is available on localhost, that user and
// password is not necessary to connect and that timeout is 5 seconds.
// Kea must be compiled with --with-dhcp-mysql option to use this backend.
//  "lease-database": {
//      "type": "mysql",
//      "name": "keatest",
//      "host": "localhost",
//      "port": 3306,
//      "user": "keatest",
//      "password": "secret1",
//      "connect-timeout": 3
//  },

// 3. PostgreSQL backend. Leases will be stored in PostgreSQL database. Make
// sure it is up, running and properly initialized. See kea-admin documentation
// for details on how to initialize the database. The only strictly required
// parameters are type and name. If other parameters are not specified,
// Kea will assume the database is available on localhost, that user and
// password is not necessary to connect and that timeout is 5 seconds.
// Kea must be compiled with --with-dhcp-pgsql option to use this backend.
//  "lease-database": {
//      "type": "pgsql",
//      "name": "keatest",
//      "host": "localhost",
//      "port": 5432,
//      "user": "keatest",
//      "password": "secret1",
//      "connect-timeout": 3
//  },

// 4. CQL (Cassandra) backend. Leases will be stored in Cassandra
// database. Make sure it is up, running and properly initialized. See
// kea-admin documentation for details on how to initialize the
// database. The only strictly required parameters are type, keyspace
// and contact-points. At least one contact point must be specified, but
// more than one is required for redundancy. Make sure you specify the
// contact points without spaces. Kea must be compiled with --with-cql
// option to use this backend.
//  "lease-database": {
//      "type": "cql",
//      "keyspace": "keatest",
//      "contact-points": "192.0.2.1,192.0.2.2,192.0.2.3",
//      "port": 9042
//  },

// Addresses will be assigned with a lifetime of 4000 seconds.
  "valid-lifetime": 4000,

// Renew and rebind timers are commented out. This implies that options
// 58 and 59 will not be sent to the client. In this case it is up to
// the client to pick the timer values according to RFC2131. Uncomment the
// timers to send these options to the client.
//  "renew-timer": 1000,
//  "rebind-timer": 2000,

// The following list defines subnets. We have only one subnet
// here. We tell Kea that it is directly available over local interface.
  "subnet4": [
    {
       "pools": [ { "pool":  "192.0.2.1 - 192.0.2.200" } ],
       "subnet": "192.0.2.0/24",
       "interface": "ethX"
    }
  ]
},

// The following configures logging. It assumes that messages with at
// least informational level (info, warn, error and fatal) should be
// logged to stdout.
"Logging": {
    "loggers": [
        {
            "name": "kea-dhcp4",
            "output_options": [
                {
                    "output": "stdout"
                }
            ],
            "severity": "INFO"
        }
    ]
}

}