telegraf - Telegraf to Loki 问题：400 bad request

Question

我启动 Loki 和 Telegraf 容器；Telegraf 无法写信给 Loki；初始日志条目显示成功：

telegraf_1  | 2022-01-17T13:56:13Z D! [agent] Attempting connection to [outputs.loki]
telegraf_1  | 2022-01-17T13:56:13Z D! [agent] Successfully connected to outputs.loki

但是后来 Telegraf 失败了：

telegraf_1  | 2022-01-17T13:56:33Z D! [outputs.loki] Buffer fullness: 117 / 10000 metrics
telegraf_1  | 2022-01-17T13:56:33Z E! [agent] Error writing to outputs.loki: when writing to [http://loki:3100/loki/api/v1/push] received status code: 400

Telegraf 输出配置：

[[outputs.loki]]
  ## The domain of Loki
  domain = "http://loki:3100"

  ## Endpoint to write api
  endpoint = "/loki/api/v1/push"

  ## If the request must be gzip encoded
  gzip_request = false

Telegram 和 Loki 的日志级别都设置为调试，还有其他方法可以解决这个问题吗？