你如何从弗伦特获得码头标签？

Question

我正试图将stdout/stderr从我的码头集装箱中转移到loki中。我有基本的工作原理，但我想用在我的client中定义的一个名为docker-compose.yaml的标记填充一个loki字段。

我的docker-compose.yml相关部分

  x-logging-defaults: &logging_defaults
    logging:
      driver: "fluentd"
      options:
        fluentd-address: 10.10.10.1:24224
        tag: docker.application
        labels: "client=the-client"     # here?
    labels:
      - client=the-client              # or here?

fluent.conf剖面

<filter docker.**>
  @type record_transformer
  <record>
    hostname "#{Socket.gethostname}"

    # I think magic goes here, I've tried many variations
    # of the following examples
    client $.client
    client $.docker.label.client      
    client ${ record.dig("labels", "client") }
  </record>
</filter>

<match docker.**>
    @type loki
    url "http://loki.service.consul:3100"
    <label>
        client $.client   # more magic here?
    </label>
    extra_labels {
        "client": "or maybe here?"
    }
</match>

Answer 1

我对最初的配置做了一些修改，并提出了一些意见：

 x-logging-defaults: &logging_defaults
    logging:
      driver: "fluentd"
      options:
        fluentd-address: 10.10.10.1:24224
        tag: docker.application
        labels: "client" # In this section, you have to specify the allowed labels, that will be passed to the LogEntry.
    labels:
      - client=the-client