# Pinned chart: grafana/alloy 1.12.1 (app v1.19.2).
# Install (deferred to deploy task, namespace prometheus):
#   helm upgrade --install alloy grafana/alloy --version 1.12.1 \
#     --namespace prometheus --values loki/k8s/alloy-values.yaml --wait
# DaemonSet ships k8s pod logs (API-tailed, no hostPath mounts) to Loki.
# Scope phase 1: k8s only, compose leftovers out.

controller:
  type: daemonset

# config-reloader sidecar: p95 33M, max 43M. The chart keeps it at the top level,
# not under `alloy:`.
configReloader:
  resources:
    requests:
      memory: "32Mi"
      cpu: "10m"
    limits:
      memory: "128Mi"

image:
  tag: "v1.19.2"

alloy:
  # p95 275M, max 287M. Alloy tails every pod log and ships it to Loki, so it sits
  # on the same IronWolf read path the node is I/O bound on. Request is set at p95.
  # The chart key is `alloy.resources`. `controller.resources` is ignored silently,
  # which is why this pod shipped with no limits at all.
  resources:
    requests:
      memory: "288Mi"
      cpu: "50m"
    limits:
      memory: "512Mi"

  configMap:
    create: true
    content: |
      discovery.kubernetes "pods" {
        role = "pod"
      }

      discovery.relabel "pods" {
        targets = discovery.kubernetes.pods.targets

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

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

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

      loki.source.kubernetes "pods" {
        targets    = discovery.relabel.pods.output
        forward_to = [loki.write.default.receiver]
      }

      loki.write "default" {
        endpoint {
          url = "http://loki-gateway.prometheus.svc.cluster.local/loki/api/v1/push"
        }
      }