Commit effb49b4 authored by René Nussbaumer's avatar René Nussbaumer
Browse files

Update the DD of OOB with gnt-cluster epo



This command came up in a local discussion about how much logic we
should put into gnt-node power off. We decided to go with a separate
convenience command which takes care of all the steps through the
procedures to turn down the cluster into a state suitable for a shutdown
of the underlying machine.
Signed-off-by: default avatarRené Nussbaumer <rn@google.com>
Reviewed-by: default avatarIustin Pop <iustin@google.com>
parent f47941f8
......@@ -52,6 +52,32 @@ New ``gnt-cluster`` Parameter
| Parameters: ``--oob-program``
| Options: ``--oob-program``: executable OOB program (absolute path)
New ``gnt-cluster epo`` Command
+++++++++++++++++++++++++++++++
| Program: ``gnt-cluster``
| Command: ``epo``
| Parameter: ``--on`` ``--force`` ``--groups`` ``--all``
| Options: ``--on``: By default epo turns off, with ``--on`` it tries to get the
| cluster back online
| ``--force``: To force the operation without asking for confirmation
| ``--groups``: To operate on groups instead of nodes
| ``--all``: To operate on the whole cluster
This is a convenience command to allow easy emergency power off of a whole
cluster or part of it. It takes care of all steps needed to get the cluster into
a sane state to turn off the nodes.
With ``--on`` it does the reverse and tries to bring the rest of the cluster back
to life.
.. note::
The master node is not able to shut itself cleanly down. Therefore, this
command will not do all the work on single node clusters. On multi node
clusters the command tries to find another master or if that is not possible
prepares everything to the point where the user has to shutdown the master
node itself alone this applies also to the single node cluster configuration.
New ``gnt-node`` Property
+++++++++++++++++++++++++
......
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