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#!/bin/bash
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# Copyright (C) 2009 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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# This is an example ganeti script that should be run from cron on all
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# nodes; it will archive the ganeti configuration into a separate
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# directory tree via GIT, so that it is possible to restore the
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# history of cluster configuration changes if needed
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# The script requires the lockfile-progs package and the git software
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# Note that since Ganeti 2.0, config.data is the authoritative source
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# of configuration; as such, we don't need to backup the ssconf files,
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# and the other files (server.pem, rapi.pem, hmac.key, known_hosts,
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# etc.) do no hold critical data (they can be regenerated at will, as
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# long as they are synchronised).
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set -e
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LOCALSTATEDIR=@LOCALSTATEDIR@
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SYSCONFDIR=@SYSCONFDIR@
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GANETIDIR=${LOCALSTATEDIR}/lib/ganeti
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CONFIGDATA=${GANETIDIR}/config.data
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GNTBKDIR=${LOCALSTATEDIR}/lib/gnt-config-backup
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LOCKFILE=${LOCALSTATEDIR}/lock/gnt-config-backup
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# exit if no ganeti config file (no cluster configured, or not M/MC)
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test -f $CONFIGDATA || exit 0
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# We use a simple lock method, since our script should be fast enough
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# (no network, not talking to ganeti-masterd) that we don't expect to
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# run over 5 minutes if the system is healthy
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lockfile-create "$LOCKFILE" || exit 1
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trap 'lockfile-remove $LOCKFILE' EXIT
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test -d $GNTBKDIR || mkdir $GNTBKDIR
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cd $GNTBKDIR
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test -d .git || git init
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cp -f $CONFIGDATA config.data
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git add config.data
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git commit -q -m "Automatic commit by gnt-config-backup"
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touch last_run