--- tags: Observability, Grafana Loki --- # Loki Helm 安裝時的參數控制 Loki Configuration Doc : https://grafana.com/docs/loki/latest/configuration/ ## 環境 :::info 依據 [這篇](https://grafana.com/blog/2022/12/19/the-only-helm-chart-you-need-for-grafana-loki-is-here/) 官方部落格新聞指出,未來 Loki 使用 Helm 安裝時,建議使用 Loki 這個選項安裝即可。 ::: Loki Helm Package Name: Loki Loki Helm Version : 4.6.0 Loki Version : 2.7.* Kubernetes : RKE2 1.24.* Istio : Rancher 內建安裝工具所提供的版本 (1.14) Grafana Dashboard : https://grafana.com/grafana/dashboards/14876-grafana-loki-dashboard-for-istio-service-mesh/ ## 問題 - too many outstanding requests 參考解決方案:https://github.com/grafana/loki/issues/5123#issuecomment-1248358971 調整 query_scheduler.max_outstanding_requests_per_tenant 設定值,此值預設為 100,可以考慮往上增加。 在參考解決方案的資料中,多數回覆者會將此值設定為 10,000 或更高,但目前我調整到 2,000 就可以解決大多數問題,若資料量夠多,我也建議再往上增加。 - maximum of series (500) reached for a single query 參考解決方案:https://github.com/grafana/loki/issues/3045#issuecomment-1178904555 調整 limits_config.max_query_series 設定值,此值預設為 500,可以考慮往上增加。 在參考解決方案的文件中,多數回覆者會將此值設定為 100,000 或更高,但目前我調整到 2,000 就可以解決大多數問題,若資料量夠多,我也建議再往上增加。 - net/http: timeout awaiting response headers 當有些條件式查詢內容過多,或是時間區間過長時,會出現查詢 timeout 的問題,可以調整 server.http_server_read_timeout 參數來控制 timeout 時間;預設為 30 秒。 也可以依據狀況去調整 [Querier](https://grafana.com/docs/loki/latest/configuration/#querier) 的相關 timeout 時間。 ## ArgoCD Application Yaml ```yaml apiVersion: argoproj.io/v1alpha1 kind: Application metadata: labels: type: cluster-infra namespace: argocd name: loki spec: destination: name: 'in-cluster' namespace: kube-monitor source: repoURL: 'https://grafana.github.io/helm-charts' targetRevision: 4.6.0 chart: loki helm: releaseName: loki valueFiles: - values.yaml parameters: - name: global.dnsService value: rke2-coredns-rke2-coredns - name: 'loki.auth_enabled' value: 'false' - name: loki.storage.s3.endpoint value: 'http://<endpoint>/<bucketnames>' - name: loki.storage.s3.accessKeyId value: 'accessKeyId' - name: loki.storage.s3.secretAccessKey value: 'secretAccessKey' - name: loki.storage.s3.s3ForcePathStyle value: 'true' - name: loki.limits_config.max_query_series value: '2000' - name: loki.query_scheduler.max_outstanding_requests_per_tenant value: '2000' - name: loki.server.http_server_read_timeout value: 1m - name: write.persistence.size value: 2Gi - name: read.persistence.size value: 2Gi project: default syncPolicy: syncOptions: - CreateNamespace=true - ApplyOutOfSyncOnly=true - PruneLast=true - RespectIgnoreDifferences=true ignoreDifferences: - group: apps kind: Deployment jsonPointers: - /spec/replicas revisionHistoryLimit: 3 ```
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