magnum-capi-helm-charts/charts/cluster-addons/templates/monitoring/loki-stack.yaml

{{- if and .Values.monitoring.enabled .Values.monitoring.lokiStack.enabled }}
---
apiVersion: v1
kind: Secret
metadata:
  name: {{ include "cluster-addons.componentName" (list . "loki-stack") }}-config
  labels:
    {{- include "cluster-addons.componentLabels" (list . "loki-stack") | nindent 4 }}
    addons.stackhpc.com/watch: ""
stringData:
  defaults: |
    loki:
      serviceMonitor:
        enabled: true
    promtail:
      serviceMonitor:
        enabled: true
      # Get promtail to scrape systemd services
      config:
        snippets:
          extraScrapeConfigs: |
            - job_name: journal
              journal:
                path: /var/log/journal
                max_age: 12h
                labels:
                  job: systemd-journal
              relabel_configs:
                - source_labels: ['__journal__systemd_unit']
                  target_label: 'unit'
                - source_labels: ['__journal__hostname']
                  target_label: 'hostname'
                - source_labels: ['__journal_priority_keyword']
                  target_label: level
      # Mount journal directory and machine-id file into promtail pods
      extraVolumes:
        - name: journal
          hostPath:
            path: /var/log/journal
        - name: machine-id
          hostPath:
            path: /etc/machine-id
      extraVolumeMounts:
        - name: journal
          mountPath: /var/log/journal
          readOnly: true
        - name: machine-id
          mountPath: /etc/machine-id
          readOnly: true
    grafana:
      sidecar:
        datasources:
          enabled: false
  overrides: |
    {{- toYaml .Values.monitoring.lokiStack.release.values | nindent 4 }}
---
apiVersion: addons.stackhpc.com/v1alpha1
kind: HelmRelease
metadata:
  name: {{ include "cluster-addons.componentName" (list . "loki-stack") }}
  labels: {{ include "cluster-addons.componentLabels" (list . "loki-stack") | nindent 4 }}
  annotations:
    # Tell Argo to ignore the non-controller owner references for this object
    argocd.argoproj.io/sync-options: "ControllerReferencesOnly=true"
spec:
  clusterName: {{ include "cluster-addons.clusterName" . }}
  bootstrap: true
  chart: {{ toYaml .Values.monitoring.lokiStack.chart | nindent 4 }}
  targetNamespace: {{ .Values.monitoring.lokiStack.release.namespace }}
  releaseName: loki-stack
  valuesSources:
    - secret:
        name: {{ include "cluster-addons.componentName" (list . "loki-stack") }}-config
        key: defaults
    - secret:
        name: {{ include "cluster-addons.componentName" (list . "loki-stack") }}-config
        key: overrides
  # StatefulSets do not allow their PVCs to be resized, but we can use lifecycle hooks
  # to ensure that it happens correctly
  lifecycleHooks:
    preUpgrade:
      - apiVersion: apps/v1
        kind: StatefulSet
        name: loki-stack
        action: delete
    {{- if .Values.monitoring.lokiStack.release.values.loki.persistence.enabled }}
      - apiVersion: v1
        kind: PersistentVolumeClaim
        selector:
          app: loki
          release: loki-stack
        action: patch
        options:
          data:
            spec:
              resources:
                requests:
                  storage: {{ .Values.monitoring.lokiStack.release.values.loki.persistence.size }}
    {{- else }}
    postUpgrade:
      - apiVersion: v1
        kind: PersistentVolumeClaim
        selector:
          app: loki
          release: loki-stack
        action: delete
    {{- end }}
    # After deleting the release, remove the PVCs
    postDelete:
      - apiVersion: v1
        kind: PersistentVolumeClaim
        selector:
          app: loki
          release: loki-stack
        action: delete
---
apiVersion: addons.stackhpc.com/v1alpha1
kind: Manifests
metadata:
  name: {{ include "cluster-addons.componentName" (list . "loki-stack-dashboards") }}
  labels: {{ include "cluster-addons.componentLabels" (list . "loki-stack-dashboards") | nindent 4 }}
  annotations:
    # Tell Argo to ignore the non-controller owner references for this object
    argocd.argoproj.io/sync-options: "ControllerReferencesOnly=true"
spec:
  clusterName: {{ include "cluster-addons.clusterName" . }}
  bootstrap: true
  targetNamespace: {{ .Values.monitoring.lokiStack.release.namespace }}
  releaseName: loki-stack-dashboards
  manifestSources:
    - template: |
        apiVersion: v1
        kind: ConfigMap
        metadata:
          name: loki-stack-grafana-datasource
          labels:
            grafana_datasource: "1"
        data:
          loki-datasource.yaml: |-
            apiVersion: 1
            datasources:
              - name: Loki
                type: loki
                url: http://loki-stack.{{ .Values.monitoring.lokiStack.release.namespace }}:3100
                access: proxy
                version: 1
                isDefault: false
    - template: |
        apiVersion: v1
        kind: ConfigMap
        metadata:
          name: loki-stack-grafana-dashboards
          labels:
            grafana_dashboard: "1"
        data:
          loki-pod-logs-dashboard.json: |
            {% raw %}
            {{- .Files.Get "grafana-dashboards/loki-pod-logs-dashboard.json" | nindent 12 }}
            {% endraw %}
          loki-systemd-logs-dashboard.json: |
            {% raw %}
            {{- .Files.Get "grafana-dashboards/loki-systemd-logs-dashboard.json" | nindent 12 }}
            {% endraw %}
          loki-metrics-dashboard.json: |
            {% raw %}
            {{- .Files.Get "grafana-dashboards/loki-metrics-dashboard.json" | nindent 12 }}
            {% endraw %}
{{- end }}