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# Date Author Comment
a12b230c 07/01/2013 10:53 am Klaus Aehlig

hroller: option --full-evacuation

Add an option to hroller, to plan for full evacuation of the
nodes to be rebooted, i.e., also plan for replacement secondary
nodes for all instances on the node after migrating out instances
with this node as primary.

Signed-off-by: Klaus Aehlig <>...
8e4230a8 07/01/2013 10:52 am Klaus Aehlig

Clarify meaning of --print-moves in hroller man page

When given the option --print-moves, hroller prints a list of
instance relocations after each reboot group. This sequential
presentation can lead to the wrong impression, that these are
all the moves to be carried out. Therefore, explicitly mention...
30ce253e 06/10/2013 04:57 pm Klaus Aehlig

add option --print-moves to hroller

If non-redundant instances are present in the cluster, hroller will
plan for them to move to other nodes while the group is rebooted.
This adds an option to also show this plan.

Signed-off-by: Klaus Aehlig <>...
71c41fc0 05/22/2013 06:03 pm Klaus Aehlig

Document hroller options recently added

hroller now also supports the options --skip-non-redundant and
--ignore-non-redundant, and this should be documented in the
man page as well.

While there, also use the same order in the options section
as in the synopsis, and in the synopsis group the algorithms...
b24e516d 05/13/2013 03:47 pm Klaus Aehlig

Add example for online rolling reboots using tags

While this use case was described in the design document, and
mentioned several times as motivation for changes in commit messages,
it has never been added to a user-facing documentation. This commit
adds at least an example to the man page....
8d38fb72 05/10/2013 01:55 pm Klaus Aehlig

Support online-maintenance in hroller

Make hroller take into account the nodes (redundant) instances
will be migrated to. This be behavior can be overridden by the
--offline-maintenance option which will make hroller plan under
the assumption that all instances will be shutdown before starting...
2207220d 05/10/2013 01:55 pm Klaus Aehlig

Add option --one-step-only to hroller

Add a new option to hroller to only output information about the first
reboot group. Together with the option --node-tags this allows for the
following work flow. First tag all nodes; then repeatedly compute the
first node group, handle these nodes and remove the tags. In between...
a39779f6 05/10/2013 01:54 pm Klaus Aehlig

Sort reboot groups by size

Make hroller output the node groups not containing the master node
sorted by size, largest group first. The master node still remains
the last node of the last reboot group. In this way, most progress
is made when switching back to normal cluster operations after the...
313fdabc 05/07/2013 06:59 pm Klaus Aehlig

Add option to hroller to select nodes based on tags

Add option --node-tags to tell hroller to consider only nodes
with these tags. A use case would be a tag tracking on which
nodes the maintenance has not yet been carried out, e.g., if
rolling reboots are interleaved with other cluster operations....
52278ef9 05/07/2013 06:57 pm Klaus Aehlig

Update hroller man page

In commit 7dbe4c725 the new option --force was introduced to
hroller. Change the man page to reflect this change.

Signed-off-by: Klaus Aehlig <>
Reviewed-by: Guido Trotter <>
2c9fb8e2 04/19/2013 02:54 pm Klaus Aehlig

Update hroller man page: master node is last

Where the information is available, hroller now schedules the
master node as the last node in the last group. Update the man
page to reflect this change.

Signed-off-by: Klaus Aehlig <>
Reviewed-by: Guido Trotter <>
2ab65a5d 04/19/2013 02:53 pm Klaus Aehlig

update hroller man page: node group filtering is implemented

Filtering of nodes by node group was already implemented in
2fce67b; fix the man page to reflect this change.

Signed-off-by: Klaus Aehlig <>
Reviewed-by: Guido Trotter <>
ba258c08 01/25/2013 06:00 pm Benjamin Kerensa

Fix spelling issue in hroller.rst

'explicitly' was spelled the wrong way

Signed-off-by: Benjamin Kerensa <>
Signed-off-by: Guido Trotter <>
Reviewed-by: Guido Trotter <>
354c4f62 01/10/2013 01:34 pm Michael Hanselmann

man: Man page reference cleanup

Sphinx is stricter than pandoc when parsing reST and does not allow an
opening parenthesis to directly follow inline markup. [1] describes the
rules. A backslash, as described in [2], can be used to separate the
two.

Additionally, there were different forms for referring to man pages....
1a9eb17e 12/19/2012 07:28 pm Guido Trotter

Use hroller to print nodes to reboot by groups

This is highly incomplete, as per the manpage BUGS section.

Signed-off-by: Guido Trotter <>
Reviewed-by: Iustin Pop <>
3504d6c8 12/19/2012 07:28 pm Guido Trotter

Add hroller htools personality

This is a new personality that for the moment doesn't do anything.

Signed-off-by: Guido Trotter <>
Reviewed-by: Iustin Pop <>