How to parse labels of the format kubernetes.io/name: my-app

[suryaoruganti]

I am pushing logs from a kubernetes source to a loki sink. Everything works great and the parsing is quite fast. Loving it so far.

This configuration works except for the app_k8s_name key. This is because of the "." in the key for the label being parsed.

app_k8s_name: '{{`{{kubernetes.pod_labels.app.kubernetes.io/name}}`}}'

The relevant config in context is here:

customConfig:
  sinks:
    loki:
      type: loki
      inputs:
        - kubernetes
      endpoint: http://loki:3100
      compression: none
      encoding:
        codec: json
      labels:
        forwarder: vector
        job: kubernetes
        namespace: "{{`{{kubernetes.pod_namespace}}`}}"
        pod_name: "{{`{{kubernetes.pod_name}}`}}"
        pod_owner: "{{`{{kubernetes.pod_owner}}`}}"
        container_name: "{{`{{kubernetes.container_name}}`}}"
        container_image: "{{`{{kubernetes.container_image}}`}}"
        app: "{{`{{kubernetes.pod_labels.app}}`}}"
        app_k8s_name: '{{`{{kubernetes.pod_labels.app.kubernetes.io/name}}`}}'
      out_of_order_action: "accept"
      remove_timestamp: true
      acknowledgements:
        enabled: false
      tenant_id: "kubernetes"
  sources:
    kubernetes:
      type: kubernetes_logs
      auto_partial_merge: true
      self_node_name: ${VECTOR_SELF_NODE_NAME}
      max_read_bytes: 2048
      max_line_bytes: 32768
      fingerprint_lines: 1
      glob_minimum_cooldown_ms: 60000
      delay_deletion_ms: 60000
      timezone: local
  data_dir: /vector-data-dir

Any pointers on how this can be resoled?

[spencergilbert]

Hi @suryaoruganti - you can see the grammar and valid characters for paths here and further down, quoted paths to handle those cases.

So, the path for that label is: kubernetes.pod_labels."app.kubernetes.io/name"

[suryaoruganti]

This solves it. Thank you.