Configuration and Command line flags Guide

The metad configuration file is written in YAML, and is optional. The command line flags can override the configuration file.

Configuration option and command line flags table

Configuration Option	Command line flag	Default	Description
	--version	false	Show metad version
	--config		The configuration file path
backend	--backend	local	The metad backend type
nodes	--nodes		List of backend nodes
log_level	--log_level	info	Log level for metad print out: debug|info|warning
pid_file	--pid_file		PID to write to
xff	--xff	false	X-Forwarded-For header support
prefix	--prefix		Backend key path prefix
group	--group	default	The metad's group name, same group share same mapping config from backend
only_self	--only_self	false	Only support self metadata query
listen	--listen	:80	Address to listen to (TCP)
listen_manage	--listen_manage	127.0.0.1:9611	Address to listen to for manage requests (TCP)
basic_auth	--basic_auth	false	Use Basic Auth to authenticate (only used with --backend=etcd|etcdv3)
client_ca_keys	--client_ca_keys		The client ca keys (for etcd|etcdv3)
client_cert	--client_cert		The client cert (for etcd|etcdv3)
client_key	--client_key		The client key (for etcd|etcdv3)
username	--username		The username to authenticate as (for etcd|etcdv3)
password	--password		The password to authenticate with (for etcd|etcdv3)

Note: Command line bool flag can not to use '--xff=true' format, flag appear means true, otherwise false.