etcd-on-k8s.txt

How to run ETCD on K8S locally

1. Install any local K8S distribution. I've used microk8s: https://microk8s.io/

2. Install etcd so you can use etcdctl: https://github.com/etcd-io/etcd/releases/

3. Run etcd on k8s via the Bitnami image. Using microk8s:

   $> microk8s kubectl run --image=bitnami/etcd:latest etcd --env ALLOW_NONE_AUTHENTICATION=yes --labels app=etcd

4. Expose etcd as a service so you can interact with it via etcdctl installed on the host. 

   Service file:
   
   apiVersion: v1
     kind: Service
     metadata:
       name: etcd
     spec:
       selector:
         app: etcd
       ports:
         - protocol: TCP
           port: 2379
           targetPort: 2379
           
   Command line:
   
   $> microk8s kubectl apply -f etcd.yaml
   
7. Get the etcd pod IP from:

   $> microk8s kubectl describe pod etcd
   
8. Test it out by running on the host:
    
   $> ./etcdctl --endpoints http://pod-ip:2379 put foo bar