High Availability for Redis

The Argo CD operator supports high availability through the mechanism described in the Argo CD documentation.

To enable HA for an Argo CD cluster, include the ha section in the ArgoCD Custom Resource.

Note

When ha is enabled, changes to .spec.redis.resources doesn't have any effect. Redis resource limits can be set using .spec.ha.resources.

apiVersion: argoproj.io/v1alpha1
kind: ArgoCD
metadata:
  name: example-argocd
  labels:
    example: ha
spec:
  ha:
    enabled: true
    redisProxyImage: haproxy
    redisProxyVersion: "2.0.4"

OpenShift

When running the Argo CD operator on OpenShift, you must apply the anyuid SCC to the Service Account for Redis prior to creating an ArgoCD Custom Resource.

oc adm policy add-scc-to-user anyuid -z argocd-redis-ha

If the above step is not performed, the StatefulSet for HA Redis will not be able to create Pods.