一 添加数据

root@k8s-etcd-01:~# ETCDCTL_API=3 etcdctl put /name "wgs"
OK

二 查询数据

root@k8s-etcd-01:~# ETCDCTL_API=3 etcdctl get  /name 
/name
wgs

三 修改数据

root@k8s-etcd-01:~# ETCDCTL_API=3 etcdctl put  /name "wgs_update"
OK
root@k8s-etcd-01:~# ETCDCTL_API=3 etcdctl get  /name 
/name
wgs_update

四 删除数据

root@k8s-etcd-01:~# ETCDCTL_API=3 etcdctl del  /name 
1
root@k8s-etcd-01:~# ETCDCTL_API=3 etcdctl get  /name