// 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 CQL (Cassandra) backend

{ "Dhcp4":

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

// 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,

      // Cassandra supports many additonal parameters that are typically
      // not needed, but may be used to tweak your deployment.

      // This parameter governs how long Kea waits before attempting
      // to reconnect. Expressed in milliseconds. The default is 2000 [ms].
      "reconnect-wait-time": 2000,

      // This parameter sets the timeout for connecting to a node. Expressed
      // in milliseconds. The default is 5000 [ms].
      "connect-timeout": 5000,

      // This parameter sets the timeout for waiting for a response
      // from a node. Expressed in milliseconds. The default is 12000 [ms].
      "request-timeout": 12000,

      // This parameter governs the TCP keep-alive mechanism. Expressed
      // in seconds of delay. The default is disabled. In this example
      // it is set to 20 minutes.
      "tcp-keepalive": 1200,

      // This parameter enables/disables Nagle's algorithm on connections.
      // The default is true.
      "tcp-nodelay": true
  },

// 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"
        }
    ]
}

}
