568 lines
43 KiB
Markdown
568 lines
43 KiB
Markdown
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# Grafana Helm Chart
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* Installs the web dashboarding system [Grafana](http://grafana.org/)
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## Get Repo Info
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```console
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helm repo add grafana https://grafana.github.io/helm-charts
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helm repo update
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```
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_See [helm repo](https://helm.sh/docs/helm/helm_repo/) for command documentation._
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## Installing the Chart
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To install the chart with the release name `my-release`:
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```console
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helm install my-release grafana/grafana
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```
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## Uninstalling the Chart
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To uninstall/delete the my-release deployment:
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```console
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helm delete my-release
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```
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The command removes all the Kubernetes components associated with the chart and deletes the release.
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## Upgrading an existing Release to a new major version
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A major chart version change (like v1.2.3 -> v2.0.0) indicates that there is an
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incompatible breaking change needing manual actions.
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### To 4.0.0 (And 3.12.1)
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This version requires Helm >= 2.12.0.
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### To 5.0.0
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You have to add --force to your helm upgrade command as the labels of the chart have changed.
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### To 6.0.0
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This version requires Helm >= 3.1.0.
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## Configuration
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| Parameter | Description | Default |
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|-------------------------------------------|-----------------------------------------------|---------------------------------------------------------|
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| `replicas` | Number of nodes | `1` |
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| `podDisruptionBudget.minAvailable` | Pod disruption minimum available | `nil` |
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| `podDisruptionBudget.maxUnavailable` | Pod disruption maximum unavailable | `nil` |
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| `deploymentStrategy` | Deployment strategy | `{ "type": "RollingUpdate" }` |
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| `livenessProbe` | Liveness Probe settings | `{ "httpGet": { "path": "/api/health", "port": 3000 } "initialDelaySeconds": 60, "timeoutSeconds": 30, "failureThreshold": 10 }` |
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| `readinessProbe` | Readiness Probe settings | `{ "httpGet": { "path": "/api/health", "port": 3000 } }`|
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| `securityContext` | Deployment securityContext | `{"runAsUser": 472, "runAsGroup": 472, "fsGroup": 472}` |
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| `priorityClassName` | Name of Priority Class to assign pods | `nil` |
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| `image.repository` | Image repository | `grafana/grafana` |
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| `image.tag` | Image tag (`Must be >= 5.0.0`) | `8.2.5` |
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| `image.sha` | Image sha (optional) | `2acf04c016c77ca2e89af3536367ce847ee326effb933121881c7c89781051d3` |
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| `image.pullPolicy` | Image pull policy | `IfNotPresent` |
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| `image.pullSecrets` | Image pull secrets (can be templated) | `[]` |
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| `service.enabled` | Enable grafana service | `true` |
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| `service.type` | Kubernetes service type | `ClusterIP` |
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| `service.port` | Kubernetes port where service is exposed | `80` |
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| `service.portName` | Name of the port on the service | `service` |
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| `service.targetPort` | Internal service is port | `3000` |
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| `service.nodePort` | Kubernetes service nodePort | `nil` |
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| `service.annotations` | Service annotations (can be templated) | `{}` |
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| `service.labels` | Custom labels | `{}` |
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| `service.clusterIP` | internal cluster service IP | `nil` |
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| `service.loadBalancerIP` | IP address to assign to load balancer (if supported) | `nil` |
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| `service.loadBalancerSourceRanges` | list of IP CIDRs allowed access to lb (if supported) | `[]` |
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| `service.externalIPs` | service external IP addresses | `[]` |
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| `headlessService` | Create a headless service | `false` |
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| `extraExposePorts` | Additional service ports for sidecar containers| `[]` |
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| `hostAliases` | adds rules to the pod's /etc/hosts | `[]` |
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| `ingress.enabled` | Enables Ingress | `false` |
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| `ingress.annotations` | Ingress annotations (values are templated) | `{}` |
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| `ingress.labels` | Custom labels | `{}` |
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| `ingress.path` | Ingress accepted path | `/` |
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| `ingress.pathType` | Ingress type of path | `Prefix` |
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| `ingress.hosts` | Ingress accepted hostnames | `["chart-example.local"]` |
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| `ingress.extraPaths` | Ingress extra paths to prepend to every host configuration. Useful when configuring [custom actions with AWS ALB Ingress Controller](https://kubernetes-sigs.github.io/aws-alb-ingress-controller/guide/ingress/annotation/#actions). Requires `ingress.hosts` to have one or more host entries. | `[]` |
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| `ingress.tls` | Ingress TLS configuration | `[]` |
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| `resources` | CPU/Memory resource requests/limits | `{}` |
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| `nodeSelector` | Node labels for pod assignment | `{}` |
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| `tolerations` | Toleration labels for pod assignment | `[]` |
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| `affinity` | Affinity settings for pod assignment | `{}` |
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| `extraInitContainers` | Init containers to add to the grafana pod | `{}` |
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| `extraContainers` | Sidecar containers to add to the grafana pod | `""` |
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| `extraContainerVolumes` | Volumes that can be mounted in sidecar containers | `[]` |
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| `extraLabels` | Custom labels for all manifests | `{}` |
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| `schedulerName` | Name of the k8s scheduler (other than default) | `nil` |
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| `persistence.enabled` | Use persistent volume to store data | `false` |
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| `persistence.type` | Type of persistence (`pvc` or `statefulset`) | `pvc` |
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| `persistence.size` | Size of persistent volume claim | `10Gi` |
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| `persistence.existingClaim` | Use an existing PVC to persist data (can be templated) | `nil` |
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| `persistence.storageClassName` | Type of persistent volume claim | `nil` |
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| `persistence.accessModes` | Persistence access modes | `[ReadWriteOnce]` |
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| `persistence.annotations` | PersistentVolumeClaim annotations | `{}` |
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| `persistence.finalizers` | PersistentVolumeClaim finalizers | `[ "kubernetes.io/pvc-protection" ]` |
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| `persistence.subPath` | Mount a sub dir of the persistent volume (can be templated) | `nil` |
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| `persistence.inMemory.enabled` | If persistence is not enabled, whether to mount the local storage in-memory to improve performance | `false` |
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| `persistence.inMemory.sizeLimit` | SizeLimit for the in-memory local storage | `nil` |
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| `initChownData.enabled` | If false, don't reset data ownership at startup | true |
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| `initChownData.image.repository` | init-chown-data container image repository | `busybox` |
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| `initChownData.image.tag` | init-chown-data container image tag | `1.31.1` |
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| `initChownData.image.sha` | init-chown-data container image sha (optional)| `""` |
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| `initChownData.image.pullPolicy` | init-chown-data container image pull policy | `IfNotPresent` |
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| `initChownData.resources` | init-chown-data pod resource requests & limits | `{}` |
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| `schedulerName` | Alternate scheduler name | `nil` |
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| `env` | Extra environment variables passed to pods | `{}` |
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| `envValueFrom` | Environment variables from alternate sources. See the API docs on [EnvVarSource](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.17/#envvarsource-v1-core) for format details. Can be templated | `{}` |
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| `envFromSecret` | Name of a Kubernetes secret (must be manually created in the same namespace) containing values to be added to the environment. Can be templated | `""` |
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| `envFromSecrets` | List of Kubernetes secrets (must be manually created in the same namespace) containing values to be added to the environment. Can be templated | `[]` |
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| `envFromConfigMaps` | List of Kubernetes ConfigMaps (must be manually created in the same namespace) containing values to be added to the environment. Can be templated | `[]` |
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| `envRenderSecret` | Sensible environment variables passed to pods and stored as secret | `{}` |
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| `enableServiceLinks` | Inject Kubernetes services as environment variables. | `true` |
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| `extraSecretMounts` | Additional grafana server secret mounts | `[]` |
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| `extraVolumeMounts` | Additional grafana server volume mounts | `[]` |
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| `extraConfigmapMounts` | Additional grafana server configMap volume mounts (values are templated) | `[]` |
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| `extraEmptyDirMounts` | Additional grafana server emptyDir volume mounts | `[]` |
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| `plugins` | Plugins to be loaded along with Grafana | `[]` |
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| `datasources` | Configure grafana datasources (passed through tpl) | `{}` |
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| `notifiers` | Configure grafana notifiers | `{}` |
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| `dashboardProviders` | Configure grafana dashboard providers | `{}` |
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| `dashboards` | Dashboards to import | `{}` |
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| `dashboardsConfigMaps` | ConfigMaps reference that contains dashboards | `{}` |
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| `grafana.ini` | Grafana's primary configuration | `{}` |
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| `ldap.enabled` | Enable LDAP authentication | `false` |
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| `ldap.existingSecret` | The name of an existing secret containing the `ldap.toml` file, this must have the key `ldap-toml`. | `""` |
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| `ldap.config` | Grafana's LDAP configuration | `""` |
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| `annotations` | Deployment annotations | `{}` |
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| `labels` | Deployment labels | `{}` |
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| `podAnnotations` | Pod annotations | `{}` |
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| `podLabels` | Pod labels | `{}` |
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| `podPortName` | Name of the grafana port on the pod | `grafana` |
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| `lifecycleHooks` | Lifecycle hooks for podStart and preStop [Example](https://kubernetes.io/docs/tasks/configure-pod-container/attach-handler-lifecycle-event/#define-poststart-and-prestop-handlers) | `{}` |
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| `sidecar.image.repository` | Sidecar image repository | `quay.io/kiwigrid/k8s-sidecar` |
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| `sidecar.image.tag` | Sidecar image tag | `1.15.6` |
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| `sidecar.image.sha` | Sidecar image sha (optional) | `""` |
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| `sidecar.imagePullPolicy` | Sidecar image pull policy | `IfNotPresent` |
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| `sidecar.resources` | Sidecar resources | `{}` |
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| `sidecar.securityContext` | Sidecar securityContext | `{}` |
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| `sidecar.enableUniqueFilenames` | Sets the kiwigrid/k8s-sidecar UNIQUE_FILENAMES environment variable. If set to `true` the sidecar will create unique filenames where duplicate data keys exist between ConfigMaps and/or Secrets within the same or multiple Namespaces. | `false` |
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| `sidecar.dashboards.enabled` | Enables the cluster wide search for dashboards and adds/updates/deletes them in grafana | `false` |
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| `sidecar.dashboards.SCProvider` | Enables creation of sidecar provider | `true` |
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| `sidecar.dashboards.provider.name` | Unique name of the grafana provider | `sidecarProvider` |
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| `sidecar.dashboards.provider.orgid` | Id of the organisation, to which the dashboards should be added | `1` |
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| `sidecar.dashboards.provider.folder` | Logical folder in which grafana groups dashboards | `""` |
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| `sidecar.dashboards.provider.disableDelete` | Activate to avoid the deletion of imported dashboards | `false` |
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| `sidecar.dashboards.provider.allowUiUpdates` | Allow updating provisioned dashboards from the UI | `false` |
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| `sidecar.dashboards.provider.type` | Provider type | `file` |
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| `sidecar.dashboards.provider.foldersFromFilesStructure` | Allow Grafana to replicate dashboard structure from filesystem. | `false` |
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| `sidecar.dashboards.watchMethod` | Method to use to detect ConfigMap changes. With WATCH the sidecar will do a WATCH requests, with SLEEP it will list all ConfigMaps, then sleep for 60 seconds. | `WATCH` |
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| `sidecar.skipTlsVerify` | Set to true to skip tls verification for kube api calls | `nil` |
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| `sidecar.dashboards.label` | Label that config maps with dashboards should have to be added | `grafana_dashboard` |
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| `sidecar.dashboards.labelValue` | Label value that config maps with dashboards should have to be added | `nil` |
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| `sidecar.dashboards.folder` | Folder in the pod that should hold the collected dashboards (unless `sidecar.dashboards.defaultFolderName` is set). This path will be mounted. | `/tmp/dashboards` |
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| `sidecar.dashboards.folderAnnotation` | The annotation the sidecar will look for in configmaps to override the destination folder for files | `nil` |
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| `sidecar.dashboards.defaultFolderName` | The default folder name, it will create a subfolder under the `sidecar.dashboards.folder` and put dashboards in there instead | `nil` |
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| `sidecar.dashboards.searchNamespace` | Namespaces list. If specified, the sidecar will search for dashboards config-maps inside these namespaces.Otherwise the namespace in which the sidecar is running will be used.It's also possible to specify ALL to search in all namespaces. | `nil` |
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| `sidecar.dashboards.script` | Absolute path to shell script to execute after a configmap got reloaded. | `nil` |
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| `sidecar.dashboards.resource` | Should the sidecar looks into secrets, configmaps or both. | `both` |
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| `sidecar.dashboards.extraMounts` | Additional dashboard sidecar volume mounts. | `[]` |
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| `sidecar.datasources.enabled` | Enables the cluster wide search for datasources and adds/updates/deletes them in grafana |`false` |
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| `sidecar.datasources.label` | Label that config maps with datasources should have to be added | `grafana_datasource` |
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| `sidecar.datasources.labelValue` | Label value that config maps with datasources should have to be added | `nil` |
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| `sidecar.datasources.searchNamespace` | Namespaces list. If specified, the sidecar will search for datasources config-maps inside these namespaces.Otherwise the namespace in which the sidecar is running will be used.It's also possible to specify ALL to search in all namespaces. | `nil` |
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| `sidecar.datasources.resource` | Should the sidecar looks into secrets, configmaps or both. | `both` |
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| `sidecar.datasources.reloadURL` | Full url of datasource configuration reload API endpoint, to invoke after a config-map change | `"http://localhost:3000/api/admin/provisioning/datasources/reload"` |
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| `sidecar.datasources.skipReload` | Enabling this omits defining the REQ_URL and REQ_METHOD environment variables | `false` |
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| `sidecar.notifiers.enabled` | Enables the cluster wide search for notifiers and adds/updates/deletes them in grafana | `false` |
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| `sidecar.notifiers.label` | Label that config maps with notifiers should have to be added | `grafana_notifier` |
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| `sidecar.notifiers.searchNamespace` | Namespaces list. If specified, the sidecar will search for notifiers config-maps (or secrets) inside these namespaces.Otherwise the namespace in which the sidecar is running will be used.It's also possible to specify ALL to search in all namespaces. | `nil` |
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| `sidecar.notifiers.resource` | Should the sidecar looks into secrets, configmaps or both. | `both` |
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| `smtp.existingSecret` | The name of an existing secret containing the SMTP credentials. | `""` |
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| `smtp.userKey` | The key in the existing SMTP secret containing the username. | `"user"` |
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| `smtp.passwordKey` | The key in the existing SMTP secret containing the password. | `"password"` |
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| `admin.existingSecret` | The name of an existing secret containing the admin credentials (can be templated). | `""` |
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| `admin.userKey` | The key in the existing admin secret containing the username. | `"admin-user"` |
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| `admin.passwordKey` | The key in the existing admin secret containing the password. | `"admin-password"` |
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| `serviceAccount.autoMount` | Automount the service account token in the pod| `true` |
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| `serviceAccount.annotations` | ServiceAccount annotations | |
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| `serviceAccount.create` | Create service account | `true` |
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| `serviceAccount.name` | Service account name to use, when empty will be set to created account if `serviceAccount.create` is set else to `default` | `` |
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| `serviceAccount.nameTest` | Service account name to use for test, when empty will be set to created account if `serviceAccount.create` is set else to `default` | `nil` |
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| `rbac.create` | Create and use RBAC resources | `true` |
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| `rbac.namespaced` | Creates Role and Rolebinding instead of the default ClusterRole and ClusteRoleBindings for the grafana instance | `false` |
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| `rbac.useExistingRole` | Set to a rolename to use existing role - skipping role creating - but still doing serviceaccount and rolebinding to the rolename set here. | `nil` |
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| `rbac.pspEnabled` | Create PodSecurityPolicy (with `rbac.create`, grant roles permissions as well) | `true` |
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| `rbac.pspUseAppArmor` | Enforce AppArmor in created PodSecurityPolicy (requires `rbac.pspEnabled`) | `true` |
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| `rbac.extraRoleRules` | Additional rules to add to the Role | [] |
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| `rbac.extraClusterRoleRules` | Additional rules to add to the ClusterRole | [] |
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| `command` | Define command to be executed by grafana container at startup | `nil` |
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| `testFramework.enabled` | Whether to create test-related resources | `true` |
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| `testFramework.image` | `test-framework` image repository. | `bats/bats` |
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| `testFramework.tag` | `test-framework` image tag. | `v1.4.1` |
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| `testFramework.imagePullPolicy` | `test-framework` image pull policy. | `IfNotPresent` |
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| `testFramework.securityContext` | `test-framework` securityContext | `{}` |
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| `downloadDashboards.env` | Environment variables to be passed to the `download-dashboards` container | `{}` |
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| `downloadDashboards.envFromSecret` | Name of a Kubernetes secret (must be manually created in the same namespace) containing values to be added to the environment. Can be templated | `""` |
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| `downloadDashboards.resources` | Resources of `download-dashboards` container | `{}` |
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| `downloadDashboardsImage.repository` | Curl docker image repo | `curlimages/curl` |
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| `downloadDashboardsImage.tag` | Curl docker image tag | `7.73.0` |
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| `downloadDashboardsImage.sha` | Curl docker image sha (optional) | `""` |
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| `downloadDashboardsImage.pullPolicy` | Curl docker image pull policy | `IfNotPresent` |
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| `namespaceOverride` | Override the deployment namespace | `""` (`Release.Namespace`) |
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| `serviceMonitor.enabled` | Use servicemonitor from prometheus operator | `false` |
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| `serviceMonitor.namespace` | Namespace this servicemonitor is installed in | |
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| `serviceMonitor.interval` | How frequently Prometheus should scrape | `1m` |
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| `serviceMonitor.path` | Path to scrape | `/metrics` |
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| `serviceMonitor.scheme` | Scheme to use for metrics scraping | `http` |
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| `serviceMonitor.tlsConfig` | TLS configuration block for the endpoint | `{}` |
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| `serviceMonitor.labels` | Labels for the servicemonitor passed to Prometheus Operator | `{}` |
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| `serviceMonitor.scrapeTimeout` | Timeout after which the scrape is ended | `30s` |
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| `serviceMonitor.relabelings` | MetricRelabelConfigs to apply to samples before ingestion. | `[]` |
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| `revisionHistoryLimit` | Number of old ReplicaSets to retain | `10` |
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| `imageRenderer.enabled` | Enable the image-renderer deployment & service | `false` |
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| `imageRenderer.image.repository` | image-renderer Image repository | `grafana/grafana-image-renderer` |
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| `imageRenderer.image.tag` | image-renderer Image tag | `latest` |
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| `imageRenderer.image.sha` | image-renderer Image sha (optional) | `""` |
|
||
|
|
| `imageRenderer.image.pullPolicy` | image-renderer ImagePullPolicy | `Always` |
|
||
|
|
| `imageRenderer.env` | extra env-vars for image-renderer | `{}` |
|
||
|
|
| `imageRenderer.serviceAccountName` | image-renderer deployment serviceAccountName | `""` |
|
||
|
|
| `imageRenderer.securityContext` | image-renderer deployment securityContext | `{}` |
|
||
|
|
| `imageRenderer.hostAliases` | image-renderer deployment Host Aliases | `[]` |
|
||
|
|
| `imageRenderer.priorityClassName` | image-renderer deployment priority class | `''` |
|
||
|
|
| `imageRenderer.service.enabled` | Enable the image-renderer service | `true` |
|
||
|
|
| `imageRenderer.service.portName` | image-renderer service port name | `http` |
|
||
|
|
| `imageRenderer.service.port` | image-renderer service port used by both service and deployment | `8081` |
|
||
|
|
| `imageRenderer.grafanaProtocol` | Protocol to use for image renderer callback url | `http` |
|
||
|
|
| `imageRenderer.grafanaSubPath` | Grafana sub path to use for image renderer callback url | `''` |
|
||
|
|
| `imageRenderer.podPortName` | name of the image-renderer port on the pod | `http` |
|
||
|
|
| `imageRenderer.revisionHistoryLimit` | number of image-renderer replica sets to keep | `10` |
|
||
|
|
| `imageRenderer.networkPolicy.limitIngress` | Enable a NetworkPolicy to limit inbound traffic from only the created grafana pods | `true` |
|
||
|
|
| `imageRenderer.networkPolicy.limitEgress` | Enable a NetworkPolicy to limit outbound traffic to only the created grafana pods | `false` |
|
||
|
|
| `imageRenderer.resources` | Set resource limits for image-renderer pdos | `{}` |
|
||
|
|
| `imageRenderer.nodeSelector` | Node labels for pod assignment | `{}` |
|
||
|
|
| `imageRenderer.tolerations` | Toleration labels for pod assignment | `[]` |
|
||
|
|
| `imageRenderer.affinity` | Affinity settings for pod assignment | `{}` |
|
||
|
|
| `networkPolicy.enabled` | Enable creation of NetworkPolicy resources. | `false` |
|
||
|
|
| `networkPolicy.allowExternal` | Don't require client label for connections | `true` |
|
||
|
|
| `networkPolicy.explicitNamespacesSelector` | A Kubernetes LabelSelector to explicitly select namespaces from which traffic could be allowed | `{}` |
|
||
|
|
| `enableKubeBackwardCompatibility` | Enable backward compatibility of kubernetes where pod's defintion version below 1.13 doesn't have the enableServiceLinks option | `false` |
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
### Example ingress with path
|
||
|
|
|
||
|
|
With grafana 6.3 and above
|
||
|
|
```yaml
|
||
|
|
grafana.ini:
|
||
|
|
server:
|
||
|
|
domain: monitoring.example.com
|
||
|
|
root_url: "%(protocol)s://%(domain)s/grafana"
|
||
|
|
serve_from_sub_path: true
|
||
|
|
ingress:
|
||
|
|
enabled: true
|
||
|
|
hosts:
|
||
|
|
- "monitoring.example.com"
|
||
|
|
path: "/grafana"
|
||
|
|
```
|
||
|
|
|
||
|
|
### Example of extraVolumeMounts
|
||
|
|
|
||
|
|
Volume can be type persistentVolumeClaim or hostPath but not both at same time.
|
||
|
|
If none existingClaim or hostPath argument is givent then type is emptyDir.
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
- extraVolumeMounts:
|
||
|
|
- name: plugins
|
||
|
|
mountPath: /var/lib/grafana/plugins
|
||
|
|
subPath: configs/grafana/plugins
|
||
|
|
existingClaim: existing-grafana-claim
|
||
|
|
readOnly: false
|
||
|
|
- name: dashboards
|
||
|
|
mountPath: /var/lib/grafana/dashboards
|
||
|
|
hostPath: /usr/shared/grafana/dashboards
|
||
|
|
readOnly: false
|
||
|
|
```
|
||
|
|
|
||
|
|
## Import dashboards
|
||
|
|
|
||
|
|
There are a few methods to import dashboards to Grafana. Below are some examples and explanations as to how to use each method:
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
dashboards:
|
||
|
|
default:
|
||
|
|
some-dashboard:
|
||
|
|
json: |
|
||
|
|
{
|
||
|
|
"annotations":
|
||
|
|
|
||
|
|
...
|
||
|
|
# Complete json file here
|
||
|
|
...
|
||
|
|
|
||
|
|
"title": "Some Dashboard",
|
||
|
|
"uid": "abcd1234",
|
||
|
|
"version": 1
|
||
|
|
}
|
||
|
|
custom-dashboard:
|
||
|
|
# This is a path to a file inside the dashboards directory inside the chart directory
|
||
|
|
file: dashboards/custom-dashboard.json
|
||
|
|
prometheus-stats:
|
||
|
|
# Ref: https://grafana.com/dashboards/2
|
||
|
|
gnetId: 2
|
||
|
|
revision: 2
|
||
|
|
datasource: Prometheus
|
||
|
|
local-dashboard:
|
||
|
|
url: https://raw.githubusercontent.com/user/repository/master/dashboards/dashboard.json
|
||
|
|
```
|
||
|
|
|
||
|
|
## BASE64 dashboards
|
||
|
|
|
||
|
|
Dashboards could be stored on a server that does not return JSON directly and instead of it returns a Base64 encoded file (e.g. Gerrit)
|
||
|
|
A new parameter has been added to the url use case so if you specify a b64content value equals to true after the url entry a Base64 decoding is applied before save the file to disk.
|
||
|
|
If this entry is not set or is equals to false not decoding is applied to the file before saving it to disk.
|
||
|
|
|
||
|
|
### Gerrit use case
|
||
|
|
|
||
|
|
Gerrit API for download files has the following schema: <https://yourgerritserver/a/{project-name}/branches/{branch-id}/files/{file-id}/content> where {project-name} and
|
||
|
|
{file-id} usually has '/' in their values and so they MUST be replaced by %2F so if project-name is user/repo, branch-id is master and file-id is equals to dir1/dir2/dashboard
|
||
|
|
the url value is <https://yourgerritserver/a/user%2Frepo/branches/master/files/dir1%2Fdir2%2Fdashboard/content>
|
||
|
|
|
||
|
|
## Sidecar for dashboards
|
||
|
|
|
||
|
|
If the parameter `sidecar.dashboards.enabled` is set, a sidecar container is deployed in the grafana
|
||
|
|
pod. This container watches all configmaps (or secrets) in the cluster and filters out the ones with
|
||
|
|
a label as defined in `sidecar.dashboards.label`. The files defined in those configmaps are written
|
||
|
|
to a folder and accessed by grafana. Changes to the configmaps are monitored and the imported
|
||
|
|
dashboards are deleted/updated.
|
||
|
|
|
||
|
|
A recommendation is to use one configmap per dashboard, as a reduction of multiple dashboards inside
|
||
|
|
one configmap is currently not properly mirrored in grafana.
|
||
|
|
|
||
|
|
Example dashboard config:
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
apiVersion: v1
|
||
|
|
kind: ConfigMap
|
||
|
|
metadata:
|
||
|
|
name: sample-grafana-dashboard
|
||
|
|
labels:
|
||
|
|
grafana_dashboard: "1"
|
||
|
|
data:
|
||
|
|
k8s-dashboard.json: |-
|
||
|
|
[...]
|
||
|
|
```
|
||
|
|
|
||
|
|
## Sidecar for datasources
|
||
|
|
|
||
|
|
If the parameter `sidecar.datasources.enabled` is set, an init container is deployed in the grafana
|
||
|
|
pod. This container lists all secrets (or configmaps, though not recommended) in the cluster and
|
||
|
|
filters out the ones with a label as defined in `sidecar.datasources.label`. The files defined in
|
||
|
|
those secrets are written to a folder and accessed by grafana on startup. Using these yaml files,
|
||
|
|
the data sources in grafana can be imported.
|
||
|
|
|
||
|
|
Secrets are recommended over configmaps for this usecase because datasources usually contain private
|
||
|
|
data like usernames and passwords. Secrets are the more appropriate cluster resource to manage those.
|
||
|
|
|
||
|
|
Example values to add a datasource adapted from [Grafana](http://docs.grafana.org/administration/provisioning/#example-datasource-config-file):
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
datasources:
|
||
|
|
datasources.yaml:
|
||
|
|
apiVersion: 1
|
||
|
|
datasources:
|
||
|
|
# <string, required> name of the datasource. Required
|
||
|
|
- name: Graphite
|
||
|
|
# <string, required> datasource type. Required
|
||
|
|
type: graphite
|
||
|
|
# <string, required> access mode. proxy or direct (Server or Browser in the UI). Required
|
||
|
|
access: proxy
|
||
|
|
# <int> org id. will default to orgId 1 if not specified
|
||
|
|
orgId: 1
|
||
|
|
# <string> url
|
||
|
|
url: http://localhost:8080
|
||
|
|
# <string> database password, if used
|
||
|
|
password:
|
||
|
|
# <string> database user, if used
|
||
|
|
user:
|
||
|
|
# <string> database name, if used
|
||
|
|
database:
|
||
|
|
# <bool> enable/disable basic auth
|
||
|
|
basicAuth:
|
||
|
|
# <string> basic auth username
|
||
|
|
basicAuthUser:
|
||
|
|
# <string> basic auth password
|
||
|
|
basicAuthPassword:
|
||
|
|
# <bool> enable/disable with credentials headers
|
||
|
|
withCredentials:
|
||
|
|
# <bool> mark as default datasource. Max one per org
|
||
|
|
isDefault:
|
||
|
|
# <map> fields that will be converted to json and stored in json_data
|
||
|
|
jsonData:
|
||
|
|
graphiteVersion: "1.1"
|
||
|
|
tlsAuth: true
|
||
|
|
tlsAuthWithCACert: true
|
||
|
|
# <string> json object of data that will be encrypted.
|
||
|
|
secureJsonData:
|
||
|
|
tlsCACert: "..."
|
||
|
|
tlsClientCert: "..."
|
||
|
|
tlsClientKey: "..."
|
||
|
|
version: 1
|
||
|
|
# <bool> allow users to edit datasources from the UI.
|
||
|
|
editable: false
|
||
|
|
```
|
||
|
|
|
||
|
|
## Sidecar for notifiers
|
||
|
|
|
||
|
|
If the parameter `sidecar.notifiers.enabled` is set, an init container is deployed in the grafana
|
||
|
|
pod. This container lists all secrets (or configmaps, though not recommended) in the cluster and
|
||
|
|
filters out the ones with a label as defined in `sidecar.notifiers.label`. The files defined in
|
||
|
|
those secrets are written to a folder and accessed by grafana on startup. Using these yaml files,
|
||
|
|
the notification channels in grafana can be imported. The secrets must be created before
|
||
|
|
`helm install` so that the notifiers init container can list the secrets.
|
||
|
|
|
||
|
|
Secrets are recommended over configmaps for this usecase because alert notification channels usually contain
|
||
|
|
private data like SMTP usernames and passwords. Secrets are the more appropriate cluster resource to manage those.
|
||
|
|
|
||
|
|
Example datasource config adapted from [Grafana](https://grafana.com/docs/grafana/latest/administration/provisioning/#alert-notification-channels):
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
notifiers:
|
||
|
|
- name: notification-channel-1
|
||
|
|
type: slack
|
||
|
|
uid: notifier1
|
||
|
|
# either
|
||
|
|
org_id: 2
|
||
|
|
# or
|
||
|
|
org_name: Main Org.
|
||
|
|
is_default: true
|
||
|
|
send_reminder: true
|
||
|
|
frequency: 1h
|
||
|
|
disable_resolve_message: false
|
||
|
|
# See `Supported Settings` section for settings supporter for each
|
||
|
|
# alert notification type.
|
||
|
|
settings:
|
||
|
|
recipient: 'XXX'
|
||
|
|
token: 'xoxb'
|
||
|
|
uploadImage: true
|
||
|
|
url: https://slack.com
|
||
|
|
|
||
|
|
delete_notifiers:
|
||
|
|
- name: notification-channel-1
|
||
|
|
uid: notifier1
|
||
|
|
org_id: 2
|
||
|
|
- name: notification-channel-2
|
||
|
|
# default org_id: 1
|
||
|
|
```
|
||
|
|
|
||
|
|
## How to serve Grafana with a path prefix (/grafana)
|
||
|
|
|
||
|
|
In order to serve Grafana with a prefix (e.g., <http://example.com/grafana>), add the following to your values.yaml.
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
ingress:
|
||
|
|
enabled: true
|
||
|
|
annotations:
|
||
|
|
kubernetes.io/ingress.class: "nginx"
|
||
|
|
nginx.ingress.kubernetes.io/rewrite-target: /$1
|
||
|
|
nginx.ingress.kubernetes.io/use-regex: "true"
|
||
|
|
|
||
|
|
path: /grafana/?(.*)
|
||
|
|
hosts:
|
||
|
|
- k8s.example.dev
|
||
|
|
|
||
|
|
grafana.ini:
|
||
|
|
server:
|
||
|
|
root_url: http://localhost:3000/grafana # this host can be localhost
|
||
|
|
```
|
||
|
|
|
||
|
|
## How to securely reference secrets in grafana.ini
|
||
|
|
|
||
|
|
This example uses Grafana uses [file providers](https://grafana.com/docs/grafana/latest/administration/configuration/#file-provider) for secret values and the `extraSecretMounts` configuration flag (Additional grafana server secret mounts) to mount the secrets.
|
||
|
|
|
||
|
|
In grafana.ini:
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
grafana.ini:
|
||
|
|
[auth.generic_oauth]
|
||
|
|
enabled = true
|
||
|
|
client_id = $__file{/etc/secrets/auth_generic_oauth/client_id}
|
||
|
|
client_secret = $__file{/etc/secrets/auth_generic_oauth/client_secret}
|
||
|
|
```
|
||
|
|
|
||
|
|
Existing secret, or created along with helm:
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
---
|
||
|
|
apiVersion: v1
|
||
|
|
kind: Secret
|
||
|
|
metadata:
|
||
|
|
name: auth-generic-oauth-secret
|
||
|
|
type: Opaque
|
||
|
|
stringData:
|
||
|
|
client_id: <value>
|
||
|
|
client_secret: <value>
|
||
|
|
```
|
||
|
|
|
||
|
|
Include in the `extraSecretMounts` configuration flag:
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
- extraSecretMounts:
|
||
|
|
- name: auth-generic-oauth-secret-mount
|
||
|
|
secretName: auth-generic-oauth-secret
|
||
|
|
defaultMode: 0440
|
||
|
|
mountPath: /etc/secrets/auth_generic_oauth
|
||
|
|
readOnly: true
|
||
|
|
```
|
||
|
|
|
||
|
|
### extraSecretMounts using a Container Storage Interface (CSI) provider
|
||
|
|
|
||
|
|
This example uses a CSI driver e.g. retrieving secrets using [Azure Key Vault Provider](https://github.com/Azure/secrets-store-csi-driver-provider-azure)
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
- extraSecretMounts:
|
||
|
|
- name: secrets-store-inline
|
||
|
|
mountPath: /run/secrets
|
||
|
|
readOnly: true
|
||
|
|
csi:
|
||
|
|
driver: secrets-store.csi.k8s.io
|
||
|
|
readOnly: true
|
||
|
|
volumeAttributes:
|
||
|
|
secretProviderClass: "my-provider"
|
||
|
|
nodePublishSecretRef:
|
||
|
|
name: akv-creds
|
||
|
|
```
|
||
|
|
|
||
|
|
## Image Renderer Plug-In
|
||
|
|
|
||
|
|
This chart supports enabling [remote image rendering](https://github.com/grafana/grafana-image-renderer/blob/master/README.md#run-in-docker)
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
imageRenderer:
|
||
|
|
enabled: true
|
||
|
|
```
|
||
|
|
|
||
|
|
### Image Renderer NetworkPolicy
|
||
|
|
|
||
|
|
By default the image-renderer pods will have a network policy which only allows ingress traffic from the created grafana instance
|
||
|
|
|
||
|
|
### High Availability for unified alerting
|
||
|
|
|
||
|
|
If you want to run Grafana in a high availability cluster you need to enable
|
||
|
|
the headless service by setting `headlessService: true` in your `values.yaml`
|
||
|
|
file.
|
||
|
|
|
||
|
|
As next step you have to setup the `grafana.ini` in your `values.yaml` in a way
|
||
|
|
that it will make use of the headless service to obtain all the IPs of the
|
||
|
|
cluster. You should replace ``{{ Name }}`` with the name of your helm deployment.
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
grafana.ini:
|
||
|
|
...
|
||
|
|
unified_alerting:
|
||
|
|
enabled: true
|
||
|
|
ha_peers: {{ Name }}-headless:9094
|
||
|
|
alerting:
|
||
|
|
enabled: false
|
||
|
|
```
|