if etcd endpoint is provided, use that to check status.

# Check etcd cluster health and print out vault active server.

endpoint=$1

if [ -z $endpoint ]

then

    etcdctl --endpoint=$endpoint:2379 cluster-health

    exit 0

fi

if [ "$ROUTE53_ZONE_NAME" = "vault.stanford.edu" ]

then

    VAULT_ADDR=https://vault.stanford.edu