Grafana helm & postgres example

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Simple Example of Grafana with Postgres Backend

This should get you pretty close to what you want

Configs

Grafana

override.values.yaml.envsubst 

image:
  repository: grafana/grafana
  # Overrides the Grafana image tag whose default is the chart appVersion
  # tag: 10.3.3
  # sha256: f8f7d338b2ecd278599e7f1cfc84a0a7bd4f549312218a54696edb38d709100d
  pullPolicy: IfNotPresent

replicas: 1

ingress:
  enabled: true
  ingressClassName: nginx
  annotations: {}
    # kubernetes.io/ingress.class: nginx
    # kubernetes.io/tls-acme: "true"
  labels: {}
  path: /

  pathType: Prefix

  hosts:
    - grafana${DOT_ENV_NAME}.example.com
  tls:
    - secretName: grafana${DASH_ENV_NAME}-example-com
      hosts:
        - grafana${DOT_ENV_NAME}.example.com

persistence:
  type: pvc
  enabled: false
  # storageClassName: default
  accessModes:
    - ReadWriteOnce
  size: 10Gi
  # annotations: {}
  finalizers:
    - kubernetes.io/pvc-protection
  extraPvcLabels: {}
  inMemory:
    enabled: true
    ## The maximum usage on memory medium EmptyDir would be
    ## the minimum value between the SizeLimit specified
    ## here and the sum of memory limits of all containers in a pod
    ##
    sizeLimit: 900Mi

initChownData:
  enabled: true
  image:
    repository: busybox
    tag: "1.31.1"
    sha: ""
    pullPolicy: IfNotPresent

  securityContext:
    runAsNonRoot: false
    runAsUser: 0

# Administrator credentials when not using an existing secret (see below)
adminUser: admin
adminPassword: ${GF_SECURITY_ADMIN_PASSWORD}

# Use an existing secret for the admin user.
admin:
  existingSecret: ""
  userKey: admin-user
  passwordKey: admin-password
#
# admin:
#   existingSecret: "grafana-external-secrets"

grafana.ini:
  paths:
    data: /var/lib/grafana/
    logs: /var/log/grafana
    plugins: /var/lib/grafana/plugins
    provisioning: /etc/grafana/provisioning
  analytics:
    check_for_updates: true
  log:
    mode: console
  grafana_net:
    url: https://grafana.net
  server:
    domain: "{{ if (and .Values.ingress.enabled .Values.ingress.hosts) }}{{ .Values.ingress.hosts | first }}{{ else }}''{{ end }}"
  auth.ldap:
    enabled: true
    allow_sign_up: true
    config_file: /etc/grafana/ldap.toml
  smtp:
    enabled: true
    user: ""
    host: "${SMTP_RELAY_HOST}"
    fromAddress: "noreply-grafana@example.com"
    fromName: ""
    skipVerify: "false"
    existingSecret: ""
    startTLS_policy: "NoStartTLS"
    existingSecretUserKey: user
    existingSecretPasswordKey: password
  alerting:
    enabled: false
  unified_alerting:
    enabled: true
    rule_version_record_limit: "5"
    ha_peers: "grafana-headless:9094"
    # ha_listen_address: "${POD_IP}:9094"      # not needed, defaults to 0.0.0.0:9094
    # ha_advertise_address: "${POD_IP}:9094"   # not needed, defaults to your listen address
    # ha_peers: "{{ .Release.Name }}-headless:9094"

headlessService: true

ldap:
  enabled: true
external-secrets
  # existingSecret: ""
  config: |-
    [[servers]]
    host = "ldaps.example.com"
    bind_dn = "CN=grafana-ldap,OU,OU=service_accounts,DC=example,DC=com"
    bind_password = "${SVC_GRAFANA_LDAP_PASSWORD}"
    port = 636
    use_ssl = true
    start_tls = false
    ssl_skip_verify = false
    # Use if direct connect: bind_dn = "example\\%s"
    search_filter = "(sAMAccountName=%s)"
    search_base_dns = ["dc=example,dc=com"]
    root_ca_cert = "/etc/grafana/certs/ca.crt"

    [servers.attributes]
    name = "givenName"
    surname = "sn"
    username = "sAMAccountName"
    member_of = "memberOf"
    email =  "mail"

    [[servers.group_mappings]]
    group_dn = "CN=grafana_editor_role,OU=roles,DC=Example,DC=com"
    org_role = "Editor"

    [[servers.group_mappings]]
    group_dn = "CN=grafana_admin_role,OU=roles,DC=Example,DC=com"
    org_role = "Admin"

    [[servers.group_mappings]]
    group_dn = "*"
    org_role = "Viewer"

## Grafana's SMTP configuration
## NOTE: To enable, grafana.ini must be configured with smtp.enabled
## ref: http://docs.grafana.org/installation/configuration/#smtp
smtp:
  # `existingSecret` is a reference to an existing secret containing the smtp configuration
  # for Grafana.
  existingSecret: ""
  userKey: "user"
  passwordKey: "password"

envFromSecrets:
  - name: grafana-env
    optional: false

envFromConfigMaps:
  - name: grafana-env
    optional: false
extraConfigmapMounts:
  - name: certs
    mountPath: /etc/grafana/certs/ca.crt
    subPath: ca.crt
    configMap: certs
    readOnly: true
  - name: etc-ssl-certs
    mountPath: /etc/ssl/certs/ca-certificates.crt
    subPath: ca-certificates.crt
    configMap: etc-ssl-certs
    readOnly: true

Postgres

pg1.yaml 

  instances: 2
  imageName: ghcr.io/cloudnative-pg/postgresql:17.5-bookworm
  primaryUpdateStrategy: unsupervised      # automated rolling update (default)
  primaryUpdateMethod: switchover          # promote a fully-upgraded replica

  postgresql:
    parameters:
      shared_buffers: 512MB

  storage:
    size: 10Gi

  # bootstrap:
  #   recovery:
  #     source: test

  # backup:
  #   retentionPolicy: "30d"
  #   barmanObjectStore:
  #     destinationPath: "https://myblobstorageaccount.blob.core.windows.net/grafana/cnpg-backups/"
  #     azureCredentials:
  #       storageAccount:
  #         name: cnpg-storage-blob-creds
  #         key: AZURE_STORAGE_ACCOUNT
  #       storageKey:
  #         name: cnpg-storage-blob-creds
  #         key: AZURE_STORAGE_KEY

secrets.yaml.tpl

---
apiVersion: v1
kind: Secret
metadata:
  name: grafana-env
  labels:
    app: grafana
stringData:
  GF_DATABASE_PASSWORD: {{ GF_DATABASE_PASSWORD }}
  GF_SECURITY_ADMIN_PASSWORD: {{ GF_SECURITY_ADMIN_PASSWORD }}
# ---
# apiVersion: v1
# stringData:
#   user: $SMTP_RELAY_USERNAME
#   password: $SMTP_RELAY_USERPASS
# kind: Secret
# metadata:
#   name: grafana-smtpauth
#   labels:
#     app: grafana

configmaps.yaml

---
apiVersion: v1
data:
  GF_SERVER_ROOT_URL: "https://grafana{{ ENV_URL_INFIX }}example.com"
  GF_DEFAULT_INSTANCE_NAME: default
  GF_SECURITY_ADMIN_USER: admin
  GF_DATABASE_TYPE: postgres
  GF_DATABASE_HOST: {{ GF_DATABASE_HOST }}
  GF_DATABASE_NAME: {{ GF_DATABASE_NAME }}
  GF_DATABASE_USER: {{ GF_DATABASE_USER }}
  GF_INSTALL_PLUGINS: grafana-piechart-panel
  GF_DATABASE_SSL_MODE: "disable"
  # GF_DATABASE_SSL_MODE: require
  # GF_DATABASE_SSL_MODE: verify-full
  GF_INSTALL_PLUGINS: briangann-datatable-panel,michaeldmoore-annunciator-panel,btplc-status-dot-panel, natel-discrete-panel, natel-influx-admin-panel, grafana-clock-panel, savantly-heatmap-panel, grafana-piechart-panel, snuids-trafficlights-panel, jdbranham-diagram-panel, xginn8-pagerduty-datasource, yesoreyeram-infinity-datasource
  GF_PLUGINS_ALLOW_LOADING_UNSIGNED_PLUGINS: "grafana-piechart-panel, grafana-sensu-app, btplc-status-dot-panel, grafana-app-sensu-overview-panel, sensu-sensugo-datasource, grafana-sensucore-datasource, briangann-datatable-panel"
kind: ConfigMap
metadata:
  name: grafana-env
  labels:
    app: grafana
---
apiVersion: v1
data:
  ca.crt: |
    -----BEGIN CERTIFICATE-----
    -----END CERTIFICATE-----
    -----BEGIN CERTIFICATE-----
    -----END CERTIFICATE-----
kind: ConfigMap
metadata:
  name: certs

main.sh

#!/bin/bash
set -eu
. ../includes/main.sh

update_ca_trust_configmap(){
  kubectl apply -f <(kubectl create configmap etc-ssl-certs --from-file=ca-certificates.crt=./etc-ssl-certs/ca-certificates.crt --dry-run=client -o yaml)
}
update_ca_trust_configmap

envtpl --keep-template aks-secret-provider.yaml.tpl
kubectl_apply "-f aks-secret-provider.yaml"
kubectl_apply "-f aks-secret-provider-mnt.yaml"

# Example for blob backups but we have scheduled job for backups for simplicity
# tfile=cnpg-storage-blob-creds.secret.yaml
# envtpl --keep-template ../tpls/$tfile.tpl -o $tfile
# kubectl_apply "-f $tfile"

kubectl_apply "-f pg1.yaml"

envtpl --keep-template secrets.yaml.tpl
kubectl_apply "-f secrets.yaml"

envtpl --keep-template configMaps.yaml.tpl
kubectl_apply "-f configmaps.yaml"

envsubst < values.yaml.envsubst > values.yaml
helm_upgrade "--install --version 9.2.9 grafana grafana/grafana -f values.yaml"
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