Prometheus配置：
[...]
remote_write:
- url: "http://localhost:18918"
[...]
prometheus2kafka 是参照Prometheus官方远程存储源码，结合 sarama（Kafka Clients-Go）写的一个适配器。将prometheus收集到的指标数据同步到Kafka。支持生产者同步或异步，默认异步，高并发场景使用。适配器访问日志也可以写入Kafka，默认关闭。
$ cd prometheus2kafka
$ go get ./...
$ go build
$ ./prometheus2kafka <flags>
Usage of ./prometheus2kafka:
-accesslog
Accesslog writes to Kafka
-addr string
The address to bind to (default ":18918")
-async
Async producer mode (default true)
-brokers string
The Kafka brokers to connect to, as a comma separated list
-ca string
The optional certificate authority file for TLS client authentication
-certificate string
The optional certificate file for client authentication
-key string
The optional key file for client authentication
-topic string
The Kafka topic to write to (default "prometheus")
-verbose
Turn on Sarama logging
-verify
Optional verify ssl certificates chain