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# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*-
#
# PostgreSQL handler script for backupninja
#
getconf backupdir /var/backups/postgres
getconf databases all
getconf compress yes
getconf vsname
localhost=`hostname`
# Decide if the handler should operate on a vserver or on the host.
# In the former case, check that $vsname exists and is running.
local usevserver=no
local vroot
if [ $vservers_are_available = yes ]; then
if [ -n "$vsname" ]; then
# does it exist ?
if ! vservers_exist "$vsname" ; then
fatal "The vserver given in vsname ($vsname) does not exist."
fi
# is it running ?
$VSERVERINFO -q $vsname RUNNING
if [ $? -ne 0 ]; then
fatal "The vserver $vsname is not running."
fi
# everything ok
info "Using vserver '$vsname'."
usevserver=yes
vroot="$VROOTDIR/$vsname"
else
info "No vserver name specified, actions will be performed on the host."
fi
fi
# Make sure that the system to backup has the needed executables
if [ $usevserver = yes ]; then
debug "Examining vserver '$vsname'."
if [ "$databases" == "all" ]; then
[ -x "$vroot`$VSERVER $vsname exec which $PGSQLDUMPALL`" ] || \
fatal "Can't find $PGSQLDUMPALL in vserver $vsname."
else
[ -x "$vroot`$VSERVER $vsname exec which $PGSQLDUMP`" ] || \
fatal "Can't find $PGSQLDUMP in vserver $vsname."
fi
else
if [ "$databases" == "all" ]; then
[ -x "`which $PGSQLDUMPALL`" ] || \
fatal "Can't find $PGSQLDUMPALL."
else
[ -x "`which $PGSQLDUMP`" ] || \
fatal "Can't find $PGSQLDUMP."
fi
fi
# create backup dir, the vroot variable will be empty if no vsname was specified
# and will proceed to operate on the host
[ -d $vroot$backupdir ] || (debug "mkdir -p $vroot$backupdir"; mkdir -p $vroot$backupdir)
[ -d $vroot$backupdir ] || fatal "Backup directory '$vroot$backupdir'"
# give backup dir the good uid and permissions
# (in respect to the vserver, if $usevserver = yes)
if [ $usevserver = yes ]; then
pguid=`$VSERVER $vsname exec getent passwd $PGSQLUSER | awk -F: '{print $3}'`
else
pguid=`getent passwd postgres | awk -F: '{print $3}'`
fi
[ -n "$pguid" ] || \
fatal "No user called postgres`[ $usevserver = no ] || echo \" on vserver $vsname\"`."
debug "chown $pguid $vroot$backupdir"
chown $pguid $vroot$backupdir
debug "chmod 700 $vroot$backupdir"
chmod 700 $vroot$backupdir
# if $databases = all, use pg_dumpall
if [ "$databases" == "all" ]; then
if [ $usevserver = yes ]; then
if [ "$compress" == "yes" ]; then
execstr="$VSERVER $vsname exec su - postgres -c \"$PGSQLDUMPALL | $GZIP > $backupdir/${vsname}.sql.gz\""
else
execstr="$VSERVER $vsname exec su - postgres -c \"$PGSQLDUMPALL > $backupdir/${vsname}.sql\""
fi
else
if [ "$compress" == "yes" ]; then
execstr="su - postgres -c \"$PGSQLDUMPALL | $GZIP > $backupdir/${localhost}-all.sql.gz\""
else
execstr="su - postgres -c \"$PGSQLDUMPALL > $backupdir/${localhost}-all.sql\""
fi
fi
debug "$execstr"
if [ ! $test ]; then
output=`eval $execstr 2>&1`
code=$?
if [ "$code" == "0" ]; then
debug $output
info "Successfully finished dump of pgsql cluster"
else
warning $output
warning "Failed to dump pgsql cluster"
fi
fi
# else use pg_dump on each specified database
else
for db in $databases; do
if [ $usevserver = yes ]; then
if [ "$compress" == "yes" ]; then
execstr="$VSERVER $vsname exec su - postgres -c \"$PGSQLDUMP $db | $GZIP > $backupdir/${db}.sql.gz\""
else
execstr="$VSERVER $vsname exec su - postgres -c \"$PGSQLDUMP $db | > $backupdir/${db}.sql\""
fi
else
if [ "$compress" == "yes" ]; then
execstr="su - postgres -c \"$PGSQLDUMP $db | $GZIP > $backupdir/${db}.sql.gz\""
else
execstr="su - postgres -c \"$PGSQLDUMP $db > $backupdir/${db}.sql\""
fi
fi
debug "$execstr"
if [ ! $test ]; then
output=`eval $execstr 2>&1`
code=$?
if [ "$code" == "0" ]; then
debug $output
info "Successfully finished dump of pgsql database ${db}"
else
warning $output
warning "Failed to dump pgsql database ${db}"
fi
fi
done
fi
return 0
|
