nilsandClaude Opus 5.5
cee0eaeab3
It runs at about 406 MiB in the cluster, too close to the 512Mi limit: long-range dashboard queries could get it OOM-killed. The request now matches what it uses, so the scheduler reserves it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QLJfZQZeAKAwSqViTmLzki
153 lines
4.6 KiB
YAML
153 lines
4.6 KiB
YAML
# Grafana for the dashboards. The InfluxDB datasource and the three MG4 dashboards are
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# provisioned from k8s/grafana/ (ConfigMaps generated by kustomization.yaml); the dashboards
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# are read-only in the UI — change the JSON in git instead.
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apiVersion: v1
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kind: PersistentVolumeClaim
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metadata:
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name: grafana-data
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namespace: mg4
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labels:
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app.kubernetes.io/name: grafana
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app.kubernetes.io/part-of: mg4
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spec:
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accessModes: ["ReadWriteOnce"]
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# No storageClassName: the cluster's default class is used.
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resources:
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requests:
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storage: 1Gi
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---
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: grafana
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namespace: mg4
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labels:
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app.kubernetes.io/name: grafana
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app.kubernetes.io/part-of: mg4
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spec:
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replicas: 1
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strategy:
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type: Recreate # the SQLite database on the volume allows one writer
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selector:
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matchLabels:
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app.kubernetes.io/name: grafana
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template:
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metadata:
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labels:
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app.kubernetes.io/name: grafana
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app.kubernetes.io/part-of: mg4
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spec:
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securityContext:
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runAsNonRoot: true
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runAsUser: 472
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runAsGroup: 472
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fsGroup: 472
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seccompProfile:
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type: RuntimeDefault
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containers:
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- name: grafana
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image: docker.io/grafana/grafana:13.2.3
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ports:
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- name: http
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containerPort: 3000
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env:
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- name: GF_SERVER_ROOT_URL
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value: https://car-grafana.k8s.stinnesbeck.com
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- name: GF_SECURITY_ADMIN_USER
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value: admin
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- name: GF_SECURITY_ADMIN_PASSWORD
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valueFrom:
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secretKeyRef:
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name: grafana-admin
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key: admin-password
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- name: GF_USERS_ALLOW_SIGN_UP
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value: "false"
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- name: GF_AUTH_ANONYMOUS_ENABLED
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value: "false"
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- name: GF_ANALYTICS_REPORTING_ENABLED
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value: "false"
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- name: GF_ANALYTICS_CHECK_FOR_UPDATES
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value: "false"
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# Read by datasources.yaml.
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- name: INFLUX_URL
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value: http://influxdb.mg4.svc:8086
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- name: INFLUX_TOKEN
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valueFrom:
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secretKeyRef:
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name: influxdb-auth
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key: admin-token
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volumeMounts:
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- name: data
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mountPath: /var/lib/grafana
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- name: datasources
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mountPath: /etc/grafana/provisioning/datasources
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- name: dashboard-provider
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mountPath: /etc/grafana/provisioning/dashboards
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- name: dashboards
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mountPath: /var/lib/grafana/dashboards/mg4
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# The first start creates and migrates Grafana's database: measured 44 s at 0.5 CPU
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# and 3 minutes at 0.1 CPU. The startup probe allows up to 10 minutes for that, and
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# liveness/readiness only begin once it succeeded, so a slow first start is never
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# killed mid-migration (which would restart it slowly again, in a loop).
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startupProbe:
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httpGet:
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path: /api/health
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port: http
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periodSeconds: 10
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timeoutSeconds: 5
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failureThreshold: 60
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readinessProbe:
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httpGet:
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path: /api/health
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port: http
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periodSeconds: 10
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timeoutSeconds: 5
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livenessProbe:
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httpGet:
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path: /api/health
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port: http
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periodSeconds: 30
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timeoutSeconds: 5
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failureThreshold: 3
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# About 406 MiB in steady state in the cluster: request what it uses, and leave room
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# for long-range dashboard queries before the limit OOM-kills it.
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resources:
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requests:
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cpu: 250m
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memory: 512Mi
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limits:
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memory: 1Gi
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securityContext:
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allowPrivilegeEscalation: false
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capabilities:
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drop: ["ALL"]
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volumes:
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- name: data
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persistentVolumeClaim:
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claimName: grafana-data
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- name: datasources
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configMap:
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name: grafana-datasources
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- name: dashboard-provider
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configMap:
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name: grafana-dashboard-provider
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- name: dashboards
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configMap:
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name: grafana-dashboards
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---
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apiVersion: v1
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kind: Service
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metadata:
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name: grafana
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namespace: mg4
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labels:
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app.kubernetes.io/name: grafana
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app.kubernetes.io/part-of: mg4
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spec:
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selector:
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app.kubernetes.io/name: grafana
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ports:
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- name: http
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port: 80
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targetPort: http
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