Commit 958c943b authored by Klaus Aehlig's avatar Klaus Aehlig

hsqueeze: document expansion planning in man page

Describe the new behavior of hsqueeze to also plan taking nodes online
in the man page.
Signed-off-by: default avatarKlaus Aehlig <aehlig@google.com>
Reviewed-by: default avatarHelga Velroyen <helgav@google.com>
parent 65d356d2
......@@ -19,6 +19,7 @@ Backend options:
Algorithm options:
**[ \--minimal-resources=*factor* ]**
**[ \--target-resources=*factor* ]**
Reporting options:
......@@ -31,7 +32,7 @@ DESCRIPTION
hsqueeze does dynamic power management, by powering up or shutting down nodes,
depending on the current load of the cluster. Currently, only suggesting nodes
to be powered off is implemented.
is implemented.
ALGORITHM
~~~~~~~~~
......@@ -45,6 +46,12 @@ cluster by the algorithm used by **hbal**\(1) yields a situation where all insta
are located on online nodes, and each node has at least the target resources free
for new instances.
All offline nodes with a tag starting with ``htools:standby`` are
considered candidates for being taken online. Those nodes are taken online
till balancing the cluster by the algorithm used by **hbal**\(1) yields a
situation where each node has at least the minimal resources free for new
instances.
OPTIONS
-------
......@@ -66,6 +73,11 @@ OPTIONS
other backends must be selected. The option is described in the man
page **htools**\(1).
\--minimal-resources=*factor*
Specify the amount of resources to be free on each node for hsqueeze not to
consider onlining additional nodes. The value is reported a multiple of the
standard instance specification, as taken from the instance policy.
\--target-resources=*factor*
Specify the amount of resources to remain free on any node after squeezing.
The value is reported a multiple of the standard instance specification, as
......
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