swatishr/memcached-operator

Simple memcached operator

memcached-operator

Simple memcached operator

A simple Go-based memcached operator for GHC demo. For more information: https://sdk.operatorframework.io/docs/installation/install-operator-sdk/

How to build and deploy

Prereq:

1. operator-sdk v0.18.2
2. docker
3. kubectl v1.11.3+
4. Kubernetes test cluster

Download the code

git clone [email protected]:swatishr/memcached-operator.git

cd memcached-operator

Run operator from your local system on a cluster, usually used during dev testing:

• Create CRD: cat deploy/crds/cache.demo.com_memcacheds_crd.yaml | kubectl create -f -
• Run operator from this project's root directory: operator-sdk run local --watch-namespace=demo
• Apply CR: cat deploy/crds/cache.demo.com_v1alpha1_memcached_cr.yaml | kubectl -n <namespace> apply -f -

Build operator image:

operator-sdk build <image-repo/image-name:tag>

docker push <image-repo/image-name:tag>

Run operator as a kubernetes deployment:

• In operator.yaml, replace the REPLACE_IMAGE with <image-repo/image-name:tag> used while building the image
• Deploy CRD: cat deploy/crds/cache.demo.com_memcacheds_crd.yaml | kubectl create -f -
• If you want to deploy it in a new namespace, create namespace first and create pull secret if needed and add it in imagePullSecrets section in service_account.yaml
• cat deploy/service_account.yaml | kubectl -n <namespace> create -f -
• cat deploy/role.yaml | kubectl -n <namespace> create -f -
• cat deploy/role_binding.yaml | kubectl -n <namespace> create -f -
• cat deploy/operator.yaml | kubectl -n <namespace> create -f -
• Verify that operator deployment is in running state: kubectl -n <namespace> get deployment |grep memcached-operator
• Apply CR: cat deploy/crds/cache.demo.com_v1alpha1_memcached_cr.yaml | kubectl -n <namespace> apply -f -
• Verify that the memcached pods are in running state: kubectl -n <namespace> get pods |grep example-memcached