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#!/bin/bash -ue
# Copyright (C) 2010 Codership Oy
#
# 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; version 2 of the License.
#
# 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; see the file COPYING. If not, write to the
# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston
# MA 02110-1301 USA.
# This is a reference script for rsync-based state snapshot tansfer
RSYNC_PID=
RSYNC_CONF=
. $(dirname $0)/wsrep_sst_common
cleanup_joiner()
{
wsrep_log_info "Joiner cleanup."
local PID=$(cat "$RSYNC_PID" 2>/dev/null || echo 0)
[ "0" != "$PID" ] && kill $PID && sleep 0.5 && kill -9 $PID >/dev/null 2>&1 \
|| :
rm -rf "$RSYNC_CONF"
rm -rf "$MAGIC_FILE"
rm -rf "$RSYNC_PID"
echo " done." >&2
}
check_pid()
{
local pid_file=$1
[ -r "$pid_file" ] && ps -p $(cat $pid_file) >/dev/null 2>&1
}
check_pid_and_port()
{
local pid_file=$1
local rsync_pid=$(cat $pid_file)
local rsync_port=$2
check_pid $pid_file && \
netstat -anpt 2>/dev/null | \
grep LISTEN | grep \:$rsync_port | grep $rsync_pid/rsync >/dev/null
}
MAGIC_FILE="$WSREP_SST_OPT_DATA/rsync_sst_complete"
rm -rf "$MAGIC_FILE"
if [ "$WSREP_SST_OPT_ROLE" = "donor" ]
then
if [ $WSREP_SST_OPT_BYPASS -eq 0 ]
then
FLUSHED="$WSREP_SST_OPT_DATA/tables_flushed"
rm -rf "$FLUSHED"
# Use deltaxfer only for WAN
inv=$(basename $0)
[ "$inv" = "wsrep_sst_rsync_wan" ] && WHOLE_FILE_OPT="" \
|| WHOLE_FILE_OPT="--whole-file"
echo "flush tables"
# wait for tables flushed and state ID written to the file
while [ ! -r "$FLUSHED" ] && ! grep -q ':' "$FLUSHED" >/dev/null 2>&1
do
sleep 0.2
done
STATE="$(cat $FLUSHED)"
rm -rf "$FLUSHED"
sync
# Old filter - include everything except selected
# FILTER=(--exclude '*.err' --exclude '*.pid' --exclude '*.sock' \
# --exclude '*.conf' --exclude core --exclude 'galera.*' \
# --exclude grastate.txt --exclude '*.pem' \
# --exclude '*.[0-9][0-9][0-9][0-9][0-9][0-9]' --exclude '*.index')
# New filter - exclude everything except dirs (schemas) and innodb files
FILTER=(-f '+ /ibdata*' -f '+ /ib_logfile*' -f '+ */' -f '-! */*')
RC=0
rsync --archive --no-times --ignore-times --inplace --delete --quiet \
$WHOLE_FILE_OPT "${FILTER[@]}" "$WSREP_SST_OPT_DATA" \
rsync://$WSREP_SST_OPT_ADDR || RC=$?
[ $RC -ne 0 ] && echo "rsync returned code $RC:" >> /dev/stderr
case $RC in
0) RC=0 # Success
;;
12) RC=71 # EPROTO
wsrep_log_error \
"rsync server on the other end has incompatible protocol. " \
"Make sure you have the same version of rsync on all nodes."
;;
22) RC=12 # ENOMEM
;;
*) RC=255 # unknown error
;;
esac
[ $RC -ne 0 ] && exit $RC
else # BYPASS
wsrep_log_info "Bypassing state dump."
STATE="$WSREP_SST_OPT_GTID"
fi
echo "continue" # now server can resume updating data
echo "$STATE" > "$MAGIC_FILE"
rsync -aqc "$MAGIC_FILE" rsync://$WSREP_SST_OPT_ADDR
echo "done $STATE"
elif [ "$WSREP_SST_OPT_ROLE" = "joiner" ]
then
MYSQLD_PID=$WSREP_SST_OPT_PARENT
MODULE="rsync_sst"
RSYNC_PID="$WSREP_SST_OPT_DATA/$MODULE.pid"
if check_pid $RSYNC_PID
then
echo "rsync daemon already running."
exit 114 # EALREADY
fi
rm -rf "$RSYNC_PID"
ADDR=$WSREP_SST_OPT_ADDR
RSYNC_PORT=$(echo $ADDR | awk -F ':' '{ print $2 }')
if [ -z "$RSYNC_PORT" ]
then
RSYNC_PORT=4444
ADDR="$(echo $ADDR | awk -F ':' '{ print $1 }'):$RSYNC_PORT"
fi
trap "exit 32" HUP PIPE
trap "exit 3" INT TERM
trap cleanup_joiner EXIT
MYUID=$(id -u)
MYGID=$(id -g)
RSYNC_CONF="$WSREP_SST_OPT_DATA/$MODULE.conf"
cat << EOF > "$RSYNC_CONF"
pid file = $RSYNC_PID
use chroot = no
[$MODULE]
path = $WSREP_SST_OPT_DATA
read only = no
timeout = 300
uid = $MYUID
gid = $MYGID
EOF
# rm -rf "$DATA"/ib_logfile* # we don't want old logs around
# listen at all interfaces (for firewalled setups)
rsync --daemon --port $RSYNC_PORT --config "$RSYNC_CONF"
until check_pid_and_port $RSYNC_PID $RSYNC_PORT
do
sleep 0.2
done
echo "ready $ADDR/$MODULE"
# wait for SST to complete by monitoring magic file
while [ ! -r "$MAGIC_FILE" ] && check_pid "$RSYNC_PID" && \
ps -p $MYSQLD_PID >/dev/null
do
sleep 1
done
if ! ps -p $MYSQLD_PID >/dev/null
then
echo "Parent mysqld process (PID:$MYSQLD_PID) terminated unexpectedly." >&2
exit 32
fi
if [ -r "$MAGIC_FILE" ]
then
cat "$MAGIC_FILE" # output UUID:seqno
else
# this message should cause joiner to abort
echo "rsync process ended without creating '$MAGIC_FILE'"
fi
# cleanup_joiner
else
echo "Unrecognized role: '$WSREP_SST_OPT_ROLE'"
exit 22 # EINVAL
fi
exit 0
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