fluentd-configmap-2.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: fluentd-logging
  namespace: kube-system
  labels:
    app: fluentd-logging
data: 
  fluent.conf: |
    <source>
      @type tail
      path /var/log/*.log
      pos_file /var/log/fluentd/tmp/access.log.pos
      tag foo.*

      <parse>
        @type json
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_container_logs
      path /var/log/containers/*.log
      pos_file /var/log/fluentd-containers.log.pos
      tag kubernetes.*
      read_from_head true
      <parse>
        @type json
        time_format %Y-%m-%dT%H:%M:%S.%NZ
      </parse>
    </source>

    <match fluentd.**>
      @type null
    </match>

    <match kubernetes.var.log.containers.**fluentd**.log>
      @type null
    </match>

    <filter kubernetes.**>
      @type kubernetes_metadata
      @id filter_kube_metadata
    </filter>

    <filter kubernetes.var.log.containers.**>
      @type record_transformer
      enable_ruby
      remove_keys kubernetes, docker

      <record>
        app ${ record.dig("kubernetes", "labels", "app") }
        job ${ record.dig("kubernetes", "labels", "app") }
        namespace ${ record.dig("kubernetes", "namespace_name") }
        pod ${ record.dig("kubernetes", "pod_name") }
        container ${ record.dig("kubernetes", "container_name") }
      </record>
    </filter>
    
    <match kubernetes.var.log.containers.**>
      @type copy

      <store>
        @type loki
        url "http://loki.monitoring.svc.cluster.local:3100"
        # extra_labels {"env":"dev"}
        label_keys "app,job,namespace,pod"
        flush_interval 10s
        flush_at_shutdown true
        buffer_chunk_limit 1m
      </store>

      <store>
        @type stdout
      </store>
    </match>