Synnefo » snf-ganeti

#!/bin/bash

# Copyright (C) 2009 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.

# This is an example ganeti script that should be run from cron on all

# nodes; it will archive the ganeti configuration into a separate

# directory tree via GIT, so that it is possible to restore the

# history of cluster configuration changes if needed

# The script requires the lockfile-progs package and the git software

# Note that since Ganeti 2.0, config.data is the authoritative source

# of configuration; as such, we don't need to backup the ssconf files,

# and the other files (server.pem, rapi.pem, hmac.key, known_hosts,

# etc.) do no hold critical data (they can be regenerated at will, as

# long as they are synchronised).

set -e

LOCALSTATEDIR=@LOCALSTATEDIR@

SYSCONFDIR=@SYSCONFDIR@

GANETIDIR=${LOCALSTATEDIR}/lib/ganeti

CONFIGDATA=${GANETIDIR}/config.data

GNTBKDIR=${LOCALSTATEDIR}/lib/gnt-config-backup

LOCKFILE=${LOCALSTATEDIR}/lock/gnt-config-backup

# exit if no ganeti config file (no cluster configured, or not M/MC)

test -f $CONFIGDATA || exit 0

# We use a simple lock method, since our script should be fast enough

# (no network, not talking to ganeti-masterd) that we don't expect to

# run over 5 minutes if the system is healthy

lockfile-create "$LOCKFILE" || exit 1

trap 'lockfile-remove $LOCKFILE' EXIT

test -d $GNTBKDIR || mkdir $GNTBKDIR

cd $GNTBKDIR

test -d .git || git init

cp -f $CONFIGDATA config.data

git add config.data

git commit -q -m "Automatic commit by gnt-config-backup"

touch last_run