Following the link
A simple set of instructions to set up and run a Go-based operator.
This guide walks through an example of building a simple memcached-operator using tools and libraries provided by the Operator SDK.
mkdir memcached-operator
cd memcached-operator
operator-sdk init --domain example.com --repo github.com/example/memcached-operator
operator-sdk create api --group cache --version v1alpha1 --kind Memcached --resource --controller