Redis Operator

# Installation

We have developed our in-house CRD(Custom Resource Definition) to deploy and manage Redis in standalone/cluster mode. So CRD is an amazing feature of Kubernetes which allows us to create our own resources and APIs in Kubernetes. We are not going in the depth of the CRD but soon we will write a blog on CRD as well. Till that time you guys can read about CRD from the official documentation (opens new window).

The API name which we have created is redis.redis.opstreelabs.in/v1beta1 and this operator is also published under the OperatorHub catalog.

https://operatorhub.io/operator/redis-operator (opens new window)

So for deploying the redis-operator and setup we need a Kubernetes cluster 1.11+ and that’s it. Let’s deploy the redis operator first.

The easiest way to install a redis operator is using Helm chart. The operator helm chart is developed on the helm=>3.0.0 version. Also, you can customize the values.yaml (opens new window) file as per the need.

$ helm repo add ot-helm https://ot-container-kit.github.io/helm-charts/
$ helm upgrade redis-operator ot-helm/redis-operator \
    --install --namespace ot-operators
...
Release "redis-operator" does not exist. Installing it now.
NAME: redis-operator
LAST DEPLOYED: Sun May  2 14:42:23 2021
NAMESPACE: ot-operators
STATUS: deployed
REVISION: 1
TEST SUITE: None

Check the state of the pod is running or not.

$ kubectl get pods -n ot-operators
...
NAME                              READY   STATUS    RESTARTS   AGE
redis-operator-74b6cbf5c5-td8t7   1/1     Running   0          2m11s

If you are beginner to Kubernetes and don't want to go inside the complexities of helm, in that case, you can use kubectl to install the operator.

$ kubectl apply -f https://raw.githubusercontent.com/OT-CONTAINER-KIT/redis-operator/master/config/crd/bases/redis.redis.opstreelabs.in_redis.yaml
$ kubectl apply -f https://raw.githubusercontent.com/OT-CONTAINER-KIT/redis-operator/master/config/crd/bases/redis.redis.opstreelabs.in_redisclusters.yaml
$ kubectl apply -f https://raw.githubusercontent.com/OT-CONTAINER-KIT/redis-operator/master/config/manager/manager.yaml
$ kubectl apply -f https://raw.githubusercontent.com/OT-CONTAINER-KIT/redis-operator/master/config/rbac/serviceaccount.yaml
$ kubectl apply -f https://raw.githubusercontent.com/OT-CONTAINER-KIT/redis-operator/master/config/rbac/role.yaml
$ kubectl apply -f https://raw.githubusercontent.com/OT-CONTAINER-KIT/redis-operator/master/config/rbac/role_binding.yaml

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