files for etcd demo

etcd demo

------etcd-og.yaml-------
apiVersion: operators.coreos.com/v1
kind: OperatorGroup
metadata:
  name: demo
  namespace: demo
spec:
  targetNamespaces:
    - demo
-------------------------
-----etcd-sub.yaml-------
apiVersion: operators.coreos.com/v1alpha1
kind: Subscription
metadata:
  name: etcd
  namespace: demo
spec:
  channel: singlenamespace-alpha
  installPlanApproval: Automatic
  name: etcd
  source: community-operators
  sourceNamespace: openshift-marketplace
-------------------------
------etcd-cluster.yaml--
apiVersion: etcd.database.coreos.com/v1beta2
kind: EtcdCluster
metadata:
  name: example
spec:
  size: 1
  version: 3.2.13
-------------------------
Feeling fancy?
ETCD_VER=v3.3.18

# choose either URL
GOOGLE_URL=https://storage.googleapis.com/etcd
GITHUB_URL=https://github.com/etcd-io/etcd/releases/download
DOWNLOAD_URL=${GOOGLE_URL}

rm -f /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz
rm -rf /tmp/etcd-download-test && mkdir -p /tmp/etcd-download-test

curl -L ${DOWNLOAD_URL}/${ETCD_VER}/etcd-${ETCD_VER}-linux-amd64.tar.gz -o /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz
tar xzvf /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz -C /tmp/etcd-download-test --strip-components=1
rm -f /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz

/tmp/etcd-download-test/etcd --version
/tmp/etcd-download-test/etcdctl version

/tmp/etcd-download-test/etcdctl --endpoints=example-client:2379 put foo bar
/tmp/etcd-download-test/etcdctl --endpoints=example-client:2379 get foo