Install on Kubernetes with Helm Chart

This guide describes how to deploy Dragonfly on a Kubernetes cluster using Helm (See Install Helm).

Prerequisites

  • A Kubernetes cluster (see Kind or Minikube if you want to experiment locally).
  • Select the Dragonfly version:
    • For the latest version, set: VERSION=v1.20.0
    • Choose a version from here

Install a standalone master

Run this command:

helm upgrade --install dragonfly oci://ghcr.io/dragonflydb/dragonfly/helm/dragonfly --version $VERSION

Install a standalone master with snapshot taken every minute

  1. Add the following to the myvals.yaml values file (create a new file if it doesn’t exist):
  1. storage:
  2.   enabled: true
  3.   requests: 128Mi # Set as desired
  5. extraArgs:
  6.   - --dbfilename=dump.rdb
  7.   - --snapshot_cron=* * * * * # cron format
  9. podSecurityContext:
  10.   fsGroup: 2000
  12. securityContext:
  13.   capabilities:
  14.     drop:
  15.       - ALL
  16.   readOnlyRootFilesystem: true
  17.   runAsNonRoot: true
  18.   runAsUser: 1000
  1. Run this command: helm upgrade -f myvals.yaml --install dragonfly oci://ghcr.io/dragonflydb/dragonfly/helm/dragonfly --version $VERSION

Integrate with Kube-Prometheus Monitoring

If you have Kube-Prometheus installed in your cluster, you set it to monitor your Dragonfly deployment by enabling the serviceMonitor and prometheusRule in your values file. For example:

  1. serviceMonitor:
  2.   enabled: true
  4. prometheusRule:
  5.   enabled: true
  6.   spec:
  7.     - alert: DragonflyMissing
  8.       expr: absent(dragonfly_uptime_in_seconds) == 1
  9.       for: 0m
  10.       labels:
  11.         severity: critical
  12.       annotations:
  13.         summary: Dragonfly is missing
  14.         description: "Dragonfly is missing"

More Customization

For more customization please see the Dragonfly Chart