k8s-operator

Custom mem-cached operator for Kubernetes.

An Operator is a method of packaging, deploying and managing a Kubernetes application.

A Kubernetes application is an application that is both deployed on Kubernetes and managed using the Kubernetes APIs and kubectl tooling.

Pre-requisites:

• GoLang

• Operator SDK

Development

Local development

1. Set the name of the operator in an environment variable

export OPERATOR_NAME=memcached-operator

2. Run locally

operator-sdk up local --namespace=default

Build

1. Regenerate K8s related code

operator-sdk generate k8s

Docker

1. Docker build

operator-sdk build mwrona/k8s-memcached-operator:v0.0.1

2. Docker push

docker push mwrona/k8s-memcached-operator:v0.0.1

Kubernetes

1. Deploy K8s operator

kubectl create -f deploy/crds/cache_v1alpha1_memcached_crd.yaml
kubectl create -f deploy/service_account.yaml
kubectl create -f deploy/role.yaml
kubectl create -f deploy/role_binding.yaml
kubectl create -f deploy/operator.yaml

2. Create mem-cached

kubectl apply -f deploy/crds/cache_v1alpha1_memcached_cr.yaml

3. Check mem-cached status

kubectl get memcached/example-memcached -o yaml

Doc

• Operator overview