tenant_id configuration in loki.write component overridden by endpoint.basic_auth.username of the component

[takahiko-okada]

What's wrong?

The following configuration should create logs under the tenant_id of tenant_a.

   // Loki Write Config
      loki.write "default" {
        endpoint {
          name = "Loki"
          url = "http://grafana-loki-gateway/loki/api/v1/push"
          basic_auth {
            username = "grafana_alloy"
            password = "{{ .Values.lokiWrite.basicAuth.password }}"
          }
          tenant_id = "tenant_a"
        }
      }

However, when I specify X-Scope-OrgID: tenant_a on Grafana Cloud's Loki Datasource, I don't get any logs returned, even the labels, because the logs seems to be created under the tenant_id of grafana_alloy.

Problems:

• tenant_id on Alloy configuration becomes meaningless when we use loki.tenants configuration at Loki Helm Chart instead of using the gateway basicAuth username and password. My assumption is that Loki starts managing the logs/chunks/indexes using loki.tenants[<index>].name

loki:
  tenants:
    - name: "grafana_alloy"          # This string becomes the `tenant_id`
      password: <pw>

Steps to reproduce

1. On Loki Helm Chart values.yaml, set loki.tenants configuration instead of using the gateway basicAuth username and password.
2. On Alloy Helm Chart values.yaml, set loki.write.endpoint.tenant_id to a different string from Loki Helm Chart loki.tenants[0].name in values.yaml

System information

Linux

Software version

Alloy Helm Chart v0.3.2, Loki Helm Chart v6.6.3

Configuration

# -- Overrides the chart's name. Used to change the infix in the resource names.
nameOverride: null

# -- Overrides the chart's computed fullname. Used to change the full prefix of
# resource names.
fullnameOverride: null

## Global properties for image pulling override the values defined under `image.registry` and `configReloader.image.registry`.
## If you want to override only one image registry, use the specific fields but if you want to override them all, use `global.image.registry`
global:
  image:
    # -- Global image registry to use if it needs to be overriden for some specific use cases (e.g local registries, custom images, ...)
    registry: ""

    # -- Optional set of global image pull secrets.
    pullSecrets: []

  # -- Security context to apply to the Grafana Alloy pod.
  podSecurityContext: {}

crds:
  # -- Whether to install CRDs for monitoring.
  create: true

## Various Alloy settings. For backwards compatibility with the grafana-agent
## chart, this field may also be called "agent". Naming this field "agent" is
## deprecated and will be removed in a future release.

#TODO
# ts=2024-06-19T22:19:41.657706529Z level=warn msg="error sending batch, will retry" component_path=/ component_id=loki.write.local component=client host=grafana-loki-gateway status=429 tenant=app error="server returned HTTP status 429 Too Many Requests (429): Ingestion rate limit exceeded for user app (limit: 4194304 bytes/sec) while attempting to ingest '9169' lines totaling '1048073' bytes, reduce log volume or contact your Loki administrator to see if the limit can be increased"

alloy:
  configMap:
    # -- Create a new ConfigMap for the config file.
    create: true
    # -- Content to assign to the new ConfigMap.  This is passed into `tpl` allowing for templating from values.
    content: |-
      // config.alloy
      // Reference: https://grafana.com/docs/alloy/latest/reference/components

      // Meta Monitoring Logs - https://grafana.com/docs/alloy/latest/tasks/metamonitoring
      logging {
        level    = "info"
        format   = "logfmt"
        write_to = [loki.write.default.receiver]
      }

      // Meta Monitoring Metrics - https://grafana.com/docs/alloy/latest/tasks/metamonitoring
      prometheus.exporter.self "alloy_meta_monitoring" {
      }

      // Kubernetes Pod Discovery
      discovery.kubernetes "pods" {
        role = "pod"
        enable_http2 = false
      }

      // Relabel Config
      discovery.relabel "logs" {

        targets = discovery.kubernetes.pods.targets

        rule {
          action = "replace"
          source_labels = ["__meta_kubernetes_namespace"]
          target_label  = "namespace"
        }

        rule {
          action = "replace"
          source_labels = ["__meta_kubernetes_pod_name"]
          target_label  = "pod"
        }

        rule {
          action = "replace"
          source_labels = ["__meta_kubernetes_pod_container_name"]
          target_label  = "container"
        }

        rule {
          action = "replace"
          source_labels = ["__meta_kubernetes_pod_label_app_kubernetes_io_name"]
          target_label  = "app"
        }

        rule {
          action = "replace"
          source_labels = ["__meta_kubernetes_pod_node_name"]
          target_label  = "node"
        }

        rule {
          action = "replace"
          source_labels = ["__meta_kubernetes_pod_container_image"]
          target_label  = "container_image"
        }

        rule {
          action = "replace"
          source_labels = ["__meta_kubernetes_pod_ready"]
          target_label  = "pod_status"
        }
      }

      // Loki Source
      loki.source.kubernetes "pods" {
        targets    = discovery.kubernetes.pods.targets
        forward_to = [loki.write.default.receiver]
      }

      // Kubernetes Events
      loki.source.kubernetes_events "k8s_events" {
        log_format = "logfmt"
        forward_to = [loki.write.default.receiver]
      }

      // Loki Write Config
      loki.write "default" {
        endpoint {
          name = "Loki"
          url = "http://grafana-loki-gateway/loki/api/v1/push"
          basic_auth {
            username = "grafana_alloy"
            password = "{{ .Values.lokiWrite.basicAuth.password }}"
          }
          tenant_id = "apps"
        }
      }

    # -- Name of existing ConfigMap to use. Used when create is false.
    name: null
    # -- Key in ConfigMap to get config from.
    key: null

  clustering:
    # -- Deploy Alloy in a cluster to allow for load distribution.
    enabled: true

    # -- Name for the port used for clustering, useful if running inside an Istio Mesh
    portName: http

  # -- Minimum stability level of components and behavior to enable. Must be
  # one of "experimental", "public-preview", or "generally-available".
  stabilityLevel: "generally-available"

  # -- Path to where Grafana Alloy stores data (for example, the Write-Ahead Log).
  # By default, data is lost between reboots.
  storagePath: /tmp/alloy

  # -- Address to listen for traffic on. 0.0.0.0 exposes the UI to other
  # containers.
  listenAddr: 0.0.0.0

  # -- Port to listen for traffic on.
  listenPort: 12345

  # -- Scheme is needed for readiness probes. If enabling tls in your configs, set to "HTTPS"
  listenScheme: HTTP

  # --  Base path where the UI is exposed.
  uiPathPrefix: /

  # -- Enables sending Grafana Labs anonymous usage stats to help improve Grafana
  # Alloy.
  enableReporting: true

  # -- Extra environment variables to pass to the Alloy container.
  extraEnv: []

  # -- Maps all the keys on a ConfigMap or Secret as environment variables. https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.24/#envfromsource-v1-core
  envFrom: []

  # -- Extra args to pass to `alloy run`: https://grafana.com/docs/alloy/latest/reference/cli/run/
  extraArgs: []

  # -- Extra ports to expose on the Alloy container.
  extraPorts: []
  # - name: "faro"
  #   port: 12347
  #   targetPort: 12347
  #   protocol: "TCP"

  mounts:
    # -- Mount /var/log from the host into the container for log collection.
    varlog: false
    # -- Mount /var/lib/docker/containers from the host into the container for log
    # collection.
    dockercontainers: false

    # -- Extra volume mounts to add into the Grafana Alloy container. Does not
    # affect the watch container.
    extra: []

  # -- Security context to apply to the Grafana Alloy container.
  securityContext: {}

  # -- Resource requests and limits to apply to the Grafana Alloy container.
  resources: {}

image:
  # -- Grafana Alloy image registry (defaults to docker.io)
  registry: "docker.io"
  # -- Grafana Alloy image repository.
  repository: grafana/alloy
  # -- (string) Grafana Alloy image tag. When empty, the Chart's appVersion is
  # used.
  tag: null
  # -- Grafana Alloy image's SHA256 digest (either in format "sha256:XYZ" or "XYZ"). When set, will override `image.tag`.
  digest: null
  # -- Grafana Alloy image pull policy.
  pullPolicy: IfNotPresent
  # -- Optional set of image pull secrets.
  pullSecrets: []

rbac:
  # -- Whether to create RBAC resources for Alloy.
  create: true

serviceAccount:
  # -- Whether to create a service account for the Grafana Alloy deployment.
  create: true
  # -- Additional labels to add to the created service account.
  additionalLabels: {}
  # -- Annotations to add to the created service account.
  annotations: {}
  # -- The name of the existing service account to use when
  # serviceAccount.create is false.
  name: null

# Options for the extra controller used for config reloading.
configReloader:
  # -- Enables automatically reloading when the Alloy config changes.
  enabled: true
  image:
    # -- Config reloader image registry (defaults to docker.io)
    registry: "ghcr.io"
    # -- Repository to get config reloader image from.
    repository: jimmidyson/configmap-reload
    # -- Tag of image to use for config reloading.
    tag: v0.12.0
    # -- SHA256 digest of image to use for config reloading (either in format "sha256:XYZ" or "XYZ"). When set, will override `configReloader.image.tag`
    digest: ""
  # -- Override the args passed to the container.
  customArgs: []
  # -- Resource requests and limits to apply to the config reloader container.
  resources:
    requests:
      cpu: "1m"
      memory: "5Mi"
  # -- Security context to apply to the Grafana configReloader container.
  securityContext: {}

controller:
  # -- Type of controller to use for deploying Grafana Alloy in the cluster.
  # Must be one of 'daemonset', 'deployment', or 'statefulset'.
  type: 'daemonset'

  # -- Number of pods to deploy. Ignored when controller.type is 'daemonset'.
  replicas: 1

  # -- Annotations to add to controller.
  extraAnnotations: {}

  # -- Whether to deploy pods in parallel. Only used when controller.type is
  # 'statefulset'.
  parallelRollout: true

  # -- Configures Pods to use the host network. When set to true, the ports that will be used must be specified.
  hostNetwork: false

  # -- Configures Pods to use the host PID namespace.
  hostPID: false

  # -- Configures the DNS policy for the pod. https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-s-dns-policy
  dnsPolicy: ClusterFirst

  # -- Update strategy for updating deployed Pods.
  updateStrategy: {}

  # -- nodeSelector to apply to Grafana Alloy pods.
  nodeSelector: {}

  # -- Tolerations to apply to Grafana Alloy pods.
  tolerations: []

  # -- Topology Spread Constraints to apply to Grafana Alloy pods.
  topologySpreadConstraints: []

  # -- priorityClassName to apply to Grafana Alloy pods.
  priorityClassName: ''

  # -- Extra pod annotations to add.
  podAnnotations: {}

  # -- Extra pod labels to add.
  podLabels: {}

  # -- Whether to enable automatic deletion of stale PVCs due to a scale down operation, when controller.type is 'statefulset'.
  enableStatefulSetAutoDeletePVC: false

  autoscaling:
    # -- Creates a HorizontalPodAutoscaler for controller type deployment.
    enabled: false
    # -- The lower limit for the number of replicas to which the autoscaler can scale down.
    minReplicas: 1
    # -- The upper limit for the number of replicas to which the autoscaler can scale up.
    maxReplicas: 5
    # -- Average CPU utilization across all relevant pods, a percentage of the requested value of the resource for the pods. Setting `targetCPUUtilizationPercentage` to 0 will disable CPU scaling.
    targetCPUUtilizationPercentage: 0
    # -- Average Memory utilization across all relevant pods, a percentage of the requested value of the resource for the pods. Setting `targetMemoryUtilizationPercentage` to 0 will disable Memory scaling.
    targetMemoryUtilizationPercentage: 80

    scaleDown:
      # -- List of policies to determine the scale-down behavior.
      policies: []
        # - type: Pods
        #   value: 4
        #   periodSeconds: 60
      # -- Determines which of the provided scaling-down policies to apply if multiple are specified.
      selectPolicy: Max
      # -- The duration that the autoscaling mechanism should look back on to make decisions about scaling down.
      stabilizationWindowSeconds: 300

    scaleUp:
      # -- List of policies to determine the scale-up behavior.
      policies: []
        # - type: Pods
        #   value: 4
        #   periodSeconds: 60
      # -- Determines which of the provided scaling-up policies to apply if multiple are specified.
      selectPolicy: Max
      # -- The duration that the autoscaling mechanism should look back on to make decisions about scaling up.
      stabilizationWindowSeconds: 0

  # -- Affinity configuration for pods.
  affinity: {}

  volumes:
    # -- Extra volumes to add to the Grafana Alloy pod.
    extra: []

  # -- volumeClaimTemplates to add when controller.type is 'statefulset'.
  volumeClaimTemplates: []

  ## -- Additional init containers to run.
  ## ref: https://kubernetes.io/docs/concepts/workloads/pods/init-containers/
  ##
  initContainers: []

  # -- Additional containers to run alongside the Alloy container and initContainers.
  extraContainers: []

service:
  # -- Creates a Service for the controller's pods.
  enabled: true
  # -- Service type
  type: ClusterIP
  # -- NodePort port. Only takes effect when `service.type: NodePort`
  nodePort: 31128
  # -- Cluster IP, can be set to None, empty "" or an IP address
  clusterIP: ''
  # -- Value for internal traffic policy. 'Cluster' or 'Local'
  internalTrafficPolicy: Cluster
  annotations: {}
    # cloud.google.com/load-balancer-type: Internal

serviceMonitor:
  enabled: false
  # -- Additional labels for the service monitor.
  additionalLabels: {}
  # -- Scrape interval. If not set, the Prometheus default scrape interval is used.
  interval: ""
  # -- MetricRelabelConfigs to apply to samples after scraping, but before ingestion.
  # ref: https://github.com/prometheus-operator/prometheus-operator/blob/main/Documentation/api.md#relabelconfig
  metricRelabelings: []
  # - action: keep
  #   regex: 'kube_(daemonset|deployment|pod|namespace|node|statefulset).+'
  #   sourceLabels: [__name__]

  # -- Customize tls parameters for the service monitor
  tlsConfig: {}

  # -- RelabelConfigs to apply to samples before scraping
  # ref: https://github.com/prometheus-operator/prometheus-operator/blob/main/Documentation/api.md#relabelconfig
  relabelings: []
  # - sourceLabels: [__meta_kubernetes_pod_node_name]
  #   separator: ;
  #   regex: ^(.*)$
  #   targetLabel: nodename
  #   replacement: $1
  #   action: replace
ingress:
  # -- Enables ingress for Alloy (Faro port)
  enabled: false
  # For Kubernetes >= 1.18 you should specify the ingress-controller via the field ingressClassName
  # See https://kubernetes.io/blog/2020/04/02/improvements-to-the-ingress-api-in-kubernetes-1.18/#specifying-the-class-of-an-ingress
  # ingressClassName: nginx
  # Values can be templated
  annotations:
    {}
    # kubernetes.io/ingress.class: nginx
    # kubernetes.io/tls-acme: "true"
  labels: {}
  path: /
  faroPort: 12347

  # pathType is only for k8s >= 1.1=
  pathType: Prefix

  hosts:
    - chart-example.local
  ## Extra paths to prepend to every host configuration. This is useful when working with annotation based services.
  extraPaths: []
  # - path: /*
  #   backend:
  #     serviceName: ssl-redirect
  #     servicePort: use-annotation
  ## Or for k8s > 1.19
  # - path: /*
  #   pathType: Prefix
  #   backend:
  #     service:
  #       name: ssl-redirect
  #       port:
  #         name: use-annotation

  tls: []
  #  - secretName: chart-example-tls
  #    hosts:
  #      - chart-example.local

Logs

No response

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