etcd is configurable through command-line flags and environment variables. Options set on the command line take precedence over those from the environment.
-The format of environment variable for flag `-my-flag` is `ENV_MY_FLAG`. It applies to all flags.
+The format of environment variable for flag `-my-flag` is `ETCD_MY_FLAG`. It applies to all flags.
To start etcd automatically using custom settings at startup in Linux, using a [systemd][systemd-intro] unit is highly recommended.
Jonathan Boulle