Files
infra-observability/k8s/alloy/rbac.yaml
T
Stéphane Tailland 3937b4f366 Declarative Grafana / Prometheus / Loki / Tempo observability stack
Deploys the whole stack into the observability namespace of the local
cluster with Kustomize alone — no helm install, no dashboard created by
hand in the UI. The Makefile carries every command: deploy, dashboards,
diagnostics, PVC flush, teardown.

Dashboards are files, never UI objects. Each carries a stable uid, which
is what keeps URLs, cross-links and alerts alive across redeployments, and
references datasources by stable uid rather than by name. The dashboard
ConfigMap is generated without a name-suffix hash so applying it updates
it in place and Grafana reloads without a restart, while the provisioning
ConfigMaps keep their hash precisely so that a change there does force one.

Prometheus scrapes the kubelet /metrics/resource endpoint rather than
/metrics/cadvisor: on this cluster cadvisor exposes machine_* series only
and no container_* at all, which would leave every CPU and memory panel
empty.

Alloy ships every pod's logs to Loki through the Kubernetes API, so no
/var/log mount is needed. Tempo's metrics_generator feeds span metrics and
the service graph back into Prometheus, and the datasources are wired so a
log line's trace_id opens the matching trace.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-25 07:27:38 +02:00

53 lines
1.2 KiB
YAML

apiVersion: v1
kind: ServiceAccount
metadata:
name: alloy
namespace: observability
labels:
app.kubernetes.io/name: alloy
app.kubernetes.io/part-of: observability
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: observability-alloy
labels:
app.kubernetes.io/name: alloy
app.kubernetes.io/part-of: observability
rules:
- apiGroups: [""]
resources:
- nodes
- nodes/proxy
- nodes/metrics
- services
- endpoints
- pods
- namespaces
- events
verbs: ["get", "list", "watch"]
- apiGroups: [""]
resources: ["pods/log"]
verbs: ["get", "list", "watch"]
- apiGroups: ["discovery.k8s.io"]
resources: ["endpointslices"]
verbs: ["get", "list", "watch"]
- nonResourceURLs: ["/metrics"]
verbs: ["get"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: observability-alloy
labels:
app.kubernetes.io/name: alloy
app.kubernetes.io/part-of: observability
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: observability-alloy
subjects:
- kind: ServiceAccount
name: alloy
namespace: observability