Send hostname instead of IP address when logging

[aivanov-citc]

HI!
We use vector to collect logs from talos nodes and send them further to Loki.
In the logs, the __host label is filled with the ip address 127.0.0.1.
Is it possible to send the hostname in the logs instead of the ip address with the __host parameter or some other?
The IP address is not entirely informative and the logs from all nodes are merged into one stream, without the possibility of filtering by nodes

[frezbo]

This was my old vecotr config:

role: Agent
dnsPolicy: ClusterFirstWithHostNet
customConfig:
  data_dir: /vector-data-dir
  sources:
    vector_metrics:
      type: internal_metrics
    host_metrics:
      type: host_metrics
    k8s_logs:
      type: kubernetes_logs
    k8s_api_server_audit_logs:
      type: file
      host_key: ${VECTOR_SELF_NODE_NAME}
      include:
        - /var/log/audit/kube/*.log
    talos_kernel_logs:
      type: socket
      mode: tcp
      address: 127.0.0.1:9301
      decoding:
        codec: json
    talos_service_logs:
      type: socket
      mode: tcp
      address: 127.0.0.1:9302
      decoding:
        codec: json
  sinks:
    k8s:
      type: loki
      inputs:
        - k8s_logs
      endpoint: http://loki-distributed-gateway
      out_of_order_action: rewrite_timestamp
      batch:
        max_bytes: 2049000
      labels:
        # forwarder: vector
        # event: "{{ event_field }}"
        # key: value
        # pod_labels_*: "{{ kubernetes.pod_labels }}"
        container: "{{`{{ kubernetes.container_name }}`}}"
        namespace: "{{`{{ kubernetes.pod_namespace }}`}}"
        node: "{{`{{ kubernetes.pod_node_name }}`}}"
      encoding:
        codec: json
    talos_kernel:
      type: loki
      inputs:
        - talos_kernel_logs
      endpoint: http://loki-distributed-gateway
      out_of_order_action: rewrite_timestamp
      batch:
        max_bytes: 1048576
      encoding:
        codec: json
      labels:
        job: talos-kernel-logs
        facility: "{{`{{ facility }}`}}"
        hostname: ${VECTOR_SELF_NODE_NAME}
    talos_service:
      type: loki
      inputs:
        - talos_service_logs
      endpoint: http://loki-distributed-gateway
      out_of_order_action: rewrite_timestamp
      batch:
        max_bytes: 1048576
      encoding:
        codec: json
      labels:
        job: talos-service-logs
        service: "{{`{{ \"talos-service\" }}`}}"
        hostname: ${VECTOR_SELF_NODE_NAME}
extraVolumes:
  - name: audit-logs
    hostPath:
      path: /var/log/audit/kube
extraVolumeMounts:
  - name: audit-logs
    mountPath: /var/log/audit/kube
    readOnly: true

also needs to run the vector daemonset as HostNetwork, I believe the helm chart has that option now

[aivanov-citc]

I did not understand whose __host parameter. Indeed, this is a vector parameter. Thank you