{
    "endpoints": {
        "static": [
            "192.168.1.111",
            "192.168.1.222",
            "192.168.1.333"
        ],
        "api": "http://xx.com/get-endpoint",
        "discovery": {
            "type": "etcd",
            "endpoints": [
                "192.168.1.111:8080",
                "192.168.1.222:1234",
                "192.168.1.333:3333"
            ],
            "key": "abc",
            "username": "admin", // optional
            "password": "123456" // optional
        }
    }