Synnefo » snf-ganeti

**epo** [--on] [--groups|--all] [--power-delay] *arguments*

Performs an emergency power-off on nodes given as arguments. If

``--groups`` is given, arguments are node groups. If ``--all`` is

provided, the whole cluster will be shut down.

The ``--on`` flag recovers the cluster after an emergency power-off.

When powering on the cluster you can use ``--power-delay`` to define the

time in seconds (fractions allowed) waited between powering on

individual nodes.

Please note that the master node will not be turned down or up

automatically.  It will just be left in a state, where you can manully

perform the shutdown of that one node. If the master is in the list of

affected nodes and this is not a complete cluster emergency power-off

(e.g. using ``--all``), you're required to do a master failover to

another node not affected.