cgrates/data/conf/samples/efs/efs_internal/cgrates.json

{
    "logger": {
        "type": "*kafkaLog",        // controls the destination of logs <*syslog|*stdout|*kafka>
        "level": 6,               // system level precision for floats
        "efs_conns": ["*localhost"],  
        "opts": {
            "kafka_conn": "unavailable_conn:9092",    // the connection trough kafka
            "kafka_topic": "TutorialTopic",    // the topic from where the events are exported
            "kafka_attempts": 5                     // number of attempts of connecting
        }
    },

    "data_db": {
        "db_type": "*internal"
    },

    "efs": {
        "enabled": true,
    },

    "admins": {
        "enabled": true,
        "ees_conns": ["*localhost"]
    }
}