This tutorial will walk you through provisioning a three node Redis Enterprise cluster with support for the Redis Flash feature, which allows you to create databases that span both RAM and flash memory (SSD) for larger datasets.

This tutorial requires a working Kubernetes cluster with a dedicated set of nodes for Redis Enterprise. In this section you will create a six node cluster using Google's Container Engine.

Create the initial cluster:

gcloud beta container clusters create k0 \
  --cluster-version 1.6.4 \
  --num-nodes 3 \
  --machine-type n1-standard-2

Add a dedicated set of worker nodes for the Redis Enterprise cluster:

gcloud beta container node-pools create redis-enterprise-pool \
  --cluster k0 \
  --local-ssd-count 1 \
  --machine-type n1-standard-2 \
  --num-nodes 3 \
  --node-labels dedicated=redis-enterprise

After adding the redis-enterprise-pool node pool the Kubernetes API will down for a few minutes while the cluster state is being reconciled. Check the cluster status using the gcloud container clusters list command.

Each dedicated worker has an attached local SSD and will include a node label dedicated=redis-enterprise, which will be used attract Redis Enterprise pods.

In this section you will taint a subset of the worker nodes to ensure only the Redis Enterprise pods are scheduled on them.

Extract the worker node names that have the dedicated=redis-enterprise node label set:

DEDICATED_NODES=$(kubectl get nodes -l dedicated=redis-enterprise -o jsonpath={.items[*].metadata.name})

Taint the dedicated worker nodes:

kubectl taint nodes ${DEDICATED_NODES} dedicated=redis-enterprise:NoSchedule

At this point only pods with the following toleration will be scheduled on the dedicated worker nodes:

tolerations:
  - key: dedicated
    operator: "Equal"
    value: redis-enterprise
    effect: "NoSchedule"

See the redis-enterprise StatefulSet for more details.

In this section you will deploy the redislabs/redis:4.5.0-22 container image using a StatefulSet.

Create a secret to hold the Redis Enterprise license key and authentication credentials:

REDIS_CLUSTER_USERNAME="[email protected]"

REDIS_CLUSTER_PASSWORD="redislabs123"

kubectl create secret generic redis-enterprise \
  --from-literal "password=${REDIS_CLUSTER_PASSWORD}" \
  --from-literal "username=${REDIS_CLUSTER_USERNAME}" \
  --from-file "license.key=${HOME}/license.key"

Create a configmap to hold the Redis Enterprise configuration file and cluster name:

kubectl create configmap redis-enterprise \
  --from-literal "name=cluster.local" \
  --from-file configs/ccs-redis.conf

Create the redis-enterprise headless service to expose each StatefulSet member internally:

kubectl create -f services/redis-enterprise.yaml

Create the redis-enterprise-lb service to provide an inter-cluster LB for the Redis discovery service and client connectivity:

kubectl create -f services/redis-enterprise-lb.yaml

Create the redis-enterprise statefulset:

kubectl create -f statefulsets/redis-enterprise.yaml

Use the kubectl port-forward command to setup a secure tunnel to the Redis Labs dashboard:

kubectl port-forward redis-enterprise-0 8443:8443

Visit https://127.0.0.1:8443 in your browser.