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HS_BIN_ROLES = hbal hscan hspace hinfo hcheck hroller

	htools/Ganeti/HTools/Program/Hroller.hs \

	man/hroller.1 \

  hbal hscan hspace hinfo hcheck hail hroller hpc-mon-collector; do

hroller() {

  HTOOLS=hroller $HBINARY "$@"

}

ALL_ROLES="hbal hscan hail hspace hinfo hcheck hroller"

./htest/hroller --version

>>>= 0

./htest/hroller --help

>>>= 0

import qualified Ganeti.HTools.Program.Hroller as Hroller

  [ ("hail",    (Hail.main,    Hail.options,    Hail.arguments,

                 "Ganeti IAllocator plugin that implements the instance\

                 \ placement and movement using the same algorithm as\

                 \ hbal(1)"))

  , ("hbal",    (Hbal.main,    Hbal.options,    Hbal.arguments,

                 "cluster balancer that looks at the current state of\

                 \ the cluster and computes a series of steps designed\

                 \ to bring the cluster into a better state"))

  , ("hcheck",  (Hcheck.main,  Hcheck.options,  Hcheck.arguments,

                "cluster checker; prints information about cluster's\

                \ health and checks whether a rebalance done using\

                \ hbal would help"))

  , ("hscan",   (Hscan.main,   Hscan.options,   Hscan.arguments,

                "tool for scanning clusters via RAPI and saving their\

                \ data in the input format used by hbal(1) and hspace(1)"))

  , ("hspace",  (Hspace.main,  Hspace.options,  Hspace.arguments,

                "computes how many additional instances can be fit on a\

                \ cluster, while maintaining N+1 status."))

  , ("hinfo",   (Hinfo.main,   Hinfo.options,   Hinfo.arguments,

                "cluster information printer; it prints information\

                \ about the current cluster state and its residing\

                \ nodes/instances"))

  , ("hroller", (Hroller.main, Hroller.options, Hroller.arguments,

                "cluster rolling maintenance helper; it helps scheduling\

                \ node reboots in a manner that doesn't conflict with the\

                \ instances' topology"))

{-| Cluster rolling maintenance helper.

-}

{-

Copyright (C) 2012 Google Inc.

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful, but

WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301, USA.

-}

module Ganeti.HTools.Program.Hroller

  ( main

  , options

  , arguments

  ) where

import Ganeti.Common

import Ganeti.HTools.CLI

-- | Options list and functions.

options :: IO [OptType]

options = do

  luxi <- oLuxiSocket

  return

    [ luxi

    , oRapiMaster

    , oDataFile

    , oIAllocSrc

    , oOfflineNode

    , oVerbose

    , oQuiet

    , oNoHeaders

    , oSaveCluster

    ]

-- | The list of arguments supported by the program.

arguments :: [ArgCompletion]

arguments = []

-- | Main function.

main :: Options -> [String] -> IO ()

main _ _ = return ()

HROLLER(1) Ganeti | Version @GANETI_VERSION@

============================================

NAME

----

hroller \- Cluster rolling maintenance scheduler for Ganeti

SYNOPSIS

--------

**hroller** {backend options...} [algorithm options...] [reporting options...]

**hroller** \--version

Backend options:

{ **-m** *cluster* | **-L[** *path* **]** | **-t** *data-file* |

**-I** *path* }

Algorithm options:

**[ -O *name...* ]**

Reporting options:

**[ -v... | -q ]**

**[ -S *file* ]**

DESCRIPTION

-----------

hroller is a cluster maintenance reboot scheduler. It can calculate

which set of nodes can be rebooted at the same time while avoiding

having both primary and secondary nodes being rebooted at the same time.

OPTIONS

-------

Currently only standard htools options are supported. For a description of them

check **htools(7)** and **hbal(1)**.

BUGS

----

The program does nothing.

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**hroller**

  cluster rolling maintenance scheduler

Installed as ``hroller``, it helps scheduling maintenances that require

node reboots on a cluster.