NAME:
etcdctl - A simple command line client for etcd.
USAGE:
etcdctl [global options] command [command options] [arguments...]
VERSION:
2.1.2
COMMANDS:
backup backup an etcd directory
cluster-health check the health of the etcd cluster
mk make a new key with a given value
mkdir make a new directory
rm remove a key
rmdir removes the key if it is an empty directory or a key-value pair
get retrieve the value of a key
ls retrieve a directory
set set the value of a key
setdir create a new or existing directory
update update an existing key with a given value
updatedir update an existing directory
watch watch a key for changes
exec-watch watch a key for changes and exec an executable
member member add, remove and list subcommands
import import a snapshot to a cluster
user user add, grant and revoke subcommands
role role add, grant and revoke subcommands
auth overall auth controls
help, h Shows a list of commands or help for one command
GLOBAL OPTIONS:
--debug output cURL commands which can be used to reproduce the request
--no-sync don‘t synchronize cluster information before sending request
--output, -o ‘simple‘ output response in the given format (`simple`, `extended` or `json`)
--peers, -C a comma-delimited list of machine addresses in the cluster (default: "127.0.0.1:4001,127.0.0.1:2379")
--cert-file identify HTTPS client using this SSL certificate file
--key-file identify HTTPS client using this SSL key file
--ca-file verify certificates of HTTPS-enabled servers using this CA bundle
--username, -u provide username[:password] and prompt if password is not supplied.
--help, -h show help
--version, -v print the version
原文：http://www.cnblogs.com/liubin0509/p/5192949.html