forust
7c4843c88c
Chart default is required podAntiAffinity on hostname plus RollingUpdate 25%/25%, which is maxUnavailable=0 at replicas=1: the new pod stays Unschedulable while the old one lives, and the old one never leaves while the new one is not Ready. Null the affinity (an empty map deep-merges with the default and keeps the rule) and set maxSurge/maxUnavailable to 1.
121 lines
3.0 KiB
YAML
121 lines
3.0 KiB
YAML
# Pinned chart: grafana/loki 7.3.0 (app 3.6.12).
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# Install (deferred to deploy task, namespace prometheus):
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# helm upgrade --install loki grafana/loki --version 7.3.0 \
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# --namespace prometheus --values loki/k8s/loki-values.yaml --wait
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# SingleBinary, filesystem storage on local-path-retain, 14d retention.
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# No IngressRoute: Loki is cluster-internal, queried via Grafana datasource.
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deploymentMode: SingleBinary
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loki:
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# Multitenancy off: single-node homelab, gateway + Alloy + Grafana talk to one tenant.
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auth_enabled: false
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image:
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tag: "3.6.12"
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commonConfig:
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# Single replica: default RF=3 would require 3 ingesters and fail all writes.
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replication_factor: 1
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storage:
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type: filesystem
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schemaConfig:
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configs:
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- from: "2024-04-01"
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store: tsdb
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object_store: filesystem
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schema: v13
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index:
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prefix: index_
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period: 24h
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compactor:
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retention_enabled: true
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delete_request_store: filesystem
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limits_config:
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retention_period: 336h
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rulerConfig:
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wal:
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dir: /var/loki/ruler-wal
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storage:
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type: local
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local:
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directory: /var/loki/rules
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# p95 84M, max 85M for the rules sidecar that shares the singleBinary pod.
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# The chart exposes it as `sidecar.resources`, shared with any other sidecar.
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sidecar:
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resources:
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requests:
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memory: "96Mi"
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cpu: "10m"
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limits:
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memory: "192Mi"
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singleBinary:
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replicas: 1
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persistence:
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enabled: true
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size: 20Gi
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storageClass: local-path-retain
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resources:
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requests:
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memory: "256Mi"
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cpu: "200m"
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limits:
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memory: "1Gi"
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cpu: "1000m"
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# Zeroed: unused in SingleBinary mode (chart validation requires it).
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write:
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replicas: 0
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read:
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replicas: 0
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backend:
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replicas: 0
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gateway:
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replicas: 1
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# Single node: chart default is required podAntiAffinity on hostname +
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# RollingUpdate 25%/25% (effective maxUnavailable=0 at replicas=1).
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# That deadlocks the rollout: the new pod stays Unschedulable while the
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# old one lives, and the old one never leaves while the new one is not
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# Ready. Null clears the default (an empty map would deep-merge with it
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# and keep the required rule); maxUnavailable=1 allows a brief gateway
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# outage during rollouts instead of a stuck deploy.
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affinity: null
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deploymentStrategy:
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type: RollingUpdate
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rollingUpdate:
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maxSurge: 1
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maxUnavailable: 1
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resources:
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requests:
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memory: "32Mi"
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cpu: "50m"
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limits:
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memory: "128Mi"
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cpu: "300m"
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monitoring:
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serviceMonitor:
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enabled: true
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labels:
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release: prometheus-stack
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interval: 15s
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rules:
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enabled: true
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namespace: prometheus
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labels:
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release: prometheus-stack
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# Disabled: memcached caches don't fit a memory-tight single node.
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# SingleBinary works without them (slower repeated queries, fine at homelab scale).
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resultsCache:
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enabled: false
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chunksCache:
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enabled: false
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# Disabled: synthetic canary traffic + helm test pod, noise on a single node.
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lokiCanary:
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enabled: false
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test:
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enabled: false
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