Letsencrypt/command_helpについて、ここに記述してください。

$ letsencrypt --help

/home/tmaeno/anaconda2/lib/python2.7/site-packages/cffi/model.py:526: UserWarning: 'point_conversion_form_t' has no values explicitly defined; next version will refuse to guess which integer type it is meant to be (unsigned/signed, int/long)
  % self._get_c_name())

  letsencrypt [SUBCOMMAND] [options] [-d domain] [-d domain] ...

The Let's Encrypt agent can obtain and install HTTPS/TLS/SSL certificates.  By
default, it will attempt to use a webserver both for obtaining and installing
the cert. Major SUBCOMMANDS are:

  (default) run        Obtain & install a cert in your current webserver
  certonly             Obtain cert, but do not install it (aka "auth")
  install              Install a previously obtained cert in a server
  revoke               Revoke a previously obtained certificate
  rollback             Rollback server configuration changes made during install
  config_changes       Show changes made to server config during installation

Choice of server plugins for obtaining and installing cert:

  (the apache plugin is not installed)
  --standalone      Run a standalone webserver for authentication
  (nginx support is experimental, buggy, and not installed by default)

OR use different servers to obtain (authenticate) the cert and then install it:

  --authenticator standalone --installer apache

More detailed help:

  -h, --help [topic]    print this message, or detailed help on a topic;
                        the available topics are:

   all, automation, paths, security, testing, or any of the subcommands or
   plugins (certonly, install, nginx, apache, standalone, etc)

1. standalone server

To obtain a cert using a "standalone" webserver (you may need to temporarily stop your exising webserver) for example.com and www.example.com:

  ./letsencrypt-auto certonly -a standalone \
  -d example.com -d www.example.com \
  --server https://acme-v01.api.letsencrypt.org/directory --agree-dev-preview

--auto は間違いらしい。

letsencrypt certonly -a standalone -d moin.qmail.jp --server https://acme-v01.api.letsencrypt.org/directory --agree-dev-preview

で試してみる。 -- ToshinoriMaeno 2015-11-19 21:38:40