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#!/bin/bash -ue
# Copyright (C) 2010-2014 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 02110-1335 USA.
# This is a reference script for rsync-based state snapshot tansfer
RSYNC_PID= # rsync pid file
RSYNC_CONF= # rsync configuration file
RSYNC_REAL_PID= # rsync process id
OS=$(uname)
[ "$OS" = "Darwin" ] && export -n LD_LIBRARY_PATH
# Setting the path for lsof on CentOS
export PATH="/usr/sbin:/sbin:$PATH"
. $(dirname $0)/wsrep_sst_common
wsrep_check_programs rsync
cleanup_joiner()
{
wsrep_log_info "Joiner cleanup. rsync PID: $RSYNC_REAL_PID"
[ "0" != "$RSYNC_REAL_PID" ] && \
kill $RSYNC_REAL_PID && \
sleep 0.5 && \
kill -9 $RSYNC_REAL_PID >/dev/null 2>&1 || \
:
rm -rf "$RSYNC_CONF"
rm -f "$STUNNEL_CONF"
rm -f "$STUNNEL_PID"
rm -rf "$MAGIC_FILE"
rm -rf "$RSYNC_PID"
wsrep_log_info "Joiner cleanup done."
if [ "${WSREP_SST_OPT_ROLE}" = "joiner" ];then
wsrep_cleanup_progress_file
fi
}
# Check whether rsync process is still running.
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=$2
local rsync_port=$3
if ! which lsof > /dev/null; then
wsrep_log_error "lsof tool not found in PATH! Make sure you have it installed."
exit 2 # ENOENT
fi
local port_info=$(lsof -i :$rsync_port -Pn 2>/dev/null | \
grep "(LISTEN)")
local is_rsync=$(echo $port_info | \
grep -wE '^(rsync|stunnel)[[:space:]]+'"$rsync_pid" 2>/dev/null)
if [ -n "$port_info" -a -z "$is_rsync" ]; then
wsrep_log_error "rsync daemon port '$rsync_port' has been taken"
exit 16 # EBUSY
fi
check_pid $pid_file && \
[ -n "$port_info" ] && [ -n "$is_rsync" ] && \
[ $(cat $pid_file) -eq $rsync_pid ]
}
STUNNEL_CONF="$WSREP_SST_OPT_DATA/stunnel.conf"
rm -f "$STUNNEL_CONF"
STUNNEL_PID="$WSREP_SST_OPT_DATA/stunnel.pid"
rm -f "$STUNNEL_PID"
MAGIC_FILE="$WSREP_SST_OPT_DATA/rsync_sst_complete"
rm -rf "$MAGIC_FILE"
BINLOG_TAR_FILE="$WSREP_SST_OPT_DATA/wsrep_sst_binlog.tar"
BINLOG_N_FILES=1
rm -f "$BINLOG_TAR_FILE" || :
if ! [ -z $WSREP_SST_OPT_BINLOG ]
then
BINLOG_DIRNAME=$(dirname $WSREP_SST_OPT_BINLOG)
BINLOG_FILENAME=$(basename $WSREP_SST_OPT_BINLOG)
BINLOG_INDEX_DIRNAME=$(dirname $WSREP_SST_OPT_BINLOG)
BINLOG_INDEX_FILENAME=$(basename $WSREP_SST_OPT_BINLOG)
fi
if ! [ -z $WSREP_SST_OPT_BINLOG_INDEX ]
then
BINLOG_INDEX_DIRNAME=$(dirname $WSREP_SST_OPT_BINLOG_INDEX)
BINLOG_INDEX_FILENAME=$(basename $WSREP_SST_OPT_BINLOG_INDEX)
fi
WSREP_LOG_DIR=${WSREP_LOG_DIR:-""}
# Try to set WSREP_LOG_DIR from the command line:
if [ -z "$WSREP_LOG_DIR" ]; then
WSREP_LOG_DIR=$INNODB_LOG_GROUP_HOME_ARG
fi
# if WSREP_LOG_DIR env. variable is not set, try to get it from my.cnf
if [ -z "$WSREP_LOG_DIR" ]; then
WSREP_LOG_DIR=$(parse_cnf mysqld$WSREP_SST_OPT_SUFFIX_VALUE innodb-log-group-home-dir '')
fi
if [ -z "$WSREP_LOG_DIR" ]; then
WSREP_LOG_DIR=$(parse_cnf --mysqld innodb-log-group-home-dir '')
fi
if [ -n "$WSREP_LOG_DIR" ]; then
# handle both relative and absolute paths
WSREP_LOG_DIR=$(cd $WSREP_SST_OPT_DATA; mkdir -p "$WSREP_LOG_DIR"; cd $WSREP_LOG_DIR; pwd -P)
else
# default to datadir
WSREP_LOG_DIR=$(cd $WSREP_SST_OPT_DATA; pwd -P)
fi
INNODB_DATA_HOME_DIR=${INNODB_DATA_HOME_DIR:-""}
# Try to set INNODB_DATA_HOME_DIR from the command line:
if [ ! -z "$INNODB_DATA_HOME_DIR_ARG" ]; then
INNODB_DATA_HOME_DIR=$INNODB_DATA_HOME_DIR_ARG
fi
# if INNODB_DATA_HOME_DIR env. variable is not set, try to get it from my.cnf
if [ -z "$INNODB_DATA_HOME_DIR" ]; then
INNODB_DATA_HOME_DIR=$(parse_cnf mysqld$WSREP_SST_OPT_SUFFIX_VALUE innodb-data-home-dir '')
fi
if [ -z "$INNODB_DATA_HOME_DIR" ]; then
INNODB_DATA_HOME_DIR=$(parse_cnf --mysqld innodb-data-home-dir '')
fi
if [ -n "$INNODB_DATA_HOME_DIR" ]; then
# handle both relative and absolute paths
INNODB_DATA_HOME_DIR=$(cd $WSREP_SST_OPT_DATA; mkdir -p "$INNODB_DATA_HOME_DIR"; cd $INNODB_DATA_HOME_DIR; pwd -P)
else
# default to datadir
INNODB_DATA_HOME_DIR=$(cd $WSREP_SST_OPT_DATA; pwd -P)
fi
# 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 '- /lost+found'
-f '- /.fseventsd'
-f '- /.Trashes'
-f '+ /wsrep_sst_binlog.tar'
-f '- $INNODB_DATA_HOME_DIR/ib_lru_dump'
-f '- $INNODB_DATA_HOME_DIR/ibdata*'
-f '+ /undo*'
-f '+ /*/'
-f '- /*')
SSTKEY=$(parse_cnf sst tkey "")
SSTCERT=$(parse_cnf sst tcert "")
STUNNEL=""
if [ -f "$SSTKEY" ] && [ -f "$SSTCERT" ] && wsrep_check_programs stunnel
then
STUNNEL="stunnel ${STUNNEL_CONF}"
fi
if [ "$WSREP_SST_OPT_ROLE" = "donor" ]
then
cat << EOF > "$STUNNEL_CONF"
CApath = ${SSTCERT%/*}
foreground = yes
pid = $STUNNEL_PID
debug = warning
client = yes
connect = ${WSREP_SST_OPT_ADDR%/*}
TIMEOUTclose = 0
verifyPeer = yes
EOF
if [ $WSREP_SST_OPT_BYPASS -eq 0 ]
then
FLUSHED="$WSREP_SST_OPT_DATA/tables_flushed"
ERROR="$WSREP_SST_OPT_DATA/sst_error"
rm -rf "$FLUSHED"
rm -rf "$ERROR"
# Use deltaxfer only for WAN
inv=$(basename $0)
[ "$inv" = "wsrep_sst_rsync_wan" ] && WHOLE_FILE_OPT="" \
|| WHOLE_FILE_OPT="--whole-file"
echo "flush tables"
# Wait for :
# (a) Tables to be flushed, AND
# (b) Cluster state ID & wsrep_gtid_domain_id to be written to the file, OR
# (c) ERROR file, in case flush tables operation failed.
while [ ! -r "$FLUSHED" ] && ! grep -q ':' "$FLUSHED" >/dev/null 2>&1
do
# Check whether ERROR file exists.
if [ -f "$ERROR" ]
then
# Flush tables operation failed.
rm -rf "$ERROR"
exit 255
fi
sleep 0.2
done
STATE="$(cat $FLUSHED)"
rm -rf "$FLUSHED"
sync
if ! [ -z $WSREP_SST_OPT_BINLOG ]
then
# Prepare binlog files
OLD_PWD="$(pwd)"
cd $BINLOG_DIRNAME
if ! [ -z $WSREP_SST_OPT_BINLOG_INDEX ]
binlog_files_full=$(tail -n $BINLOG_N_FILES ${BINLOG_FILENAME}.index)
then
cd $BINLOG_INDEX_DIRNAME
binlog_files_full=$(tail -n $BINLOG_N_FILES ${BINLOG_INDEX_FILENAME}.index)
fi
cd $BINLOG_DIRNAME
binlog_files=""
for ii in $binlog_files_full
do
binlog_files="$binlog_files $(basename $ii)"
done
if ! [ -z "$binlog_files" ]
then
wsrep_log_info "Preparing binlog files for transfer:"
tar -cvf $BINLOG_TAR_FILE $binlog_files >&2
fi
cd "$OLD_PWD"
fi
# first, the normal directories, so that we can detect incompatible protocol
RC=0
rsync ${STUNNEL:+--rsh="$STUNNEL"} \
--owner --group --perms --links --specials \
--ignore-times --inplace --dirs --delete --quiet \
$WHOLE_FILE_OPT "${FILTER[@]}" "$WSREP_SST_OPT_DATA/" \
rsync://$WSREP_SST_OPT_ADDR >&2 || RC=$?
if [ "$RC" -ne 0 ]; then
wsrep_log_error "rsync returned code $RC:"
case $RC in
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
exit $RC
fi
# Transfer InnoDB data files
rsync ${STUNNEL:+--rsh="$STUNNEL"} \
--owner --group --perms --links --specials \
--ignore-times --inplace --dirs --delete --quiet \
$WHOLE_FILE_OPT -f '+ /ibdata*' -f '+ /ib_lru_dump' \
-f '- **' "$INNODB_DATA_HOME_DIR/" \
rsync://$WSREP_SST_OPT_ADDR-data_dir >&2 || RC=$?
if [ $RC -ne 0 ]; then
wsrep_log_error "rsync innodb_data_home_dir returned code $RC:"
exit 255 # unknown error
fi
# second, we transfer InnoDB log files
rsync ${STUNNEL:+--rsh="$STUNNEL"} \
--owner --group --perms --links --specials \
--ignore-times --inplace --dirs --delete --quiet \
$WHOLE_FILE_OPT -f '+ /ib_logfile[0-9]*' -f '- **' "$WSREP_LOG_DIR/" \
rsync://$WSREP_SST_OPT_ADDR-log_dir >&2 || RC=$?
if [ $RC -ne 0 ]; then
wsrep_log_error "rsync innodb_log_group_home_dir returned code $RC:"
exit 255 # unknown error
fi
# then, we parallelize the transfer of database directories, use . so that pathconcatenation works
OLD_PWD="$(pwd)"
cd $WSREP_SST_OPT_DATA
count=1
[ "$OS" = "Linux" ] && count=$(grep -c processor /proc/cpuinfo)
[ "$OS" = "Darwin" -o "$OS" = "FreeBSD" ] && count=$(sysctl -n hw.ncpu)
find . -maxdepth 1 -mindepth 1 -type d -not -name "lost+found" \
-print0 | xargs -I{} -0 -P $count \
rsync ${STUNNEL:+--rsh="$STUNNEL"} \
--owner --group --perms --links --specials \
--ignore-times --inplace --recursive --delete --quiet \
$WHOLE_FILE_OPT --exclude '*/ib_logfile*' "$WSREP_SST_OPT_DATA"/{}/ \
rsync://$WSREP_SST_OPT_ADDR/{} >&2 || RC=$?
cd "$OLD_PWD"
if [ $RC -ne 0 ]; then
wsrep_log_error "find/rsync returned code $RC:"
exit 255 # unknown error
fi
else # BYPASS
wsrep_log_info "Bypassing state dump."
# Store donor's wsrep GTID (state ID) and wsrep_gtid_domain_id
# (separated by a space).
STATE="$WSREP_SST_OPT_GTID $WSREP_SST_OPT_GTID_DOMAIN_ID"
fi
echo "continue" # now server can resume updating data
echo "$STATE" > "$MAGIC_FILE"
rsync ${STUNNEL:+--rsh="$STUNNEL"} \
--archive --quiet --checksum "$MAGIC_FILE" rsync://$WSREP_SST_OPT_ADDR
echo "done $STATE"
elif [ "$WSREP_SST_OPT_ROLE" = "joiner" ]
then
wsrep_check_programs lsof
touch $SST_PROGRESS_FILE
MYSQLD_PID=$WSREP_SST_OPT_PARENT
MODULE="rsync_sst"
RSYNC_PID="$WSREP_SST_OPT_DATA/$MODULE.pid"
if check_pid $RSYNC_PID
then
wsrep_log_error "rsync daemon already running."
exit 114 # EALREADY
fi
rm -rf "$RSYNC_PID"
ADDR=$WSREP_SST_OPT_ADDR
if [ "${ADDR#\[}" != "$ADDR" ]; then
RSYNC_PORT=$(echo $ADDR | awk -F '\\]:' '{ print $2 }')
RSYNC_ADDR=$(echo $ADDR | awk -F '\\]:' '{ print $1 }')"]"
else
RSYNC_PORT=$(echo $ADDR | awk -F ':' '{ print $2 }')
RSYNC_ADDR=$(echo $ADDR | awk -F ':' '{ print $1 }')
fi
if [ -z "$RSYNC_PORT" ]
then
RSYNC_PORT=4444
ADDR="$RSYNC_ADDR:$RSYNC_PORT"
fi
trap "exit 32" HUP PIPE
trap "exit 3" INT TERM ABRT
trap cleanup_joiner EXIT
RSYNC_CONF="$WSREP_SST_OPT_DATA/$MODULE.conf"
if [ -n "${MYSQL_TMP_DIR:-}" ] ; then
SILENT="log file = $MYSQL_TMP_DIR/rsyncd.log"
else
SILENT=""
fi
cat << EOF > "$RSYNC_CONF"
pid file = $RSYNC_PID
use chroot = no
read only = no
timeout = 300
$SILENT
[$MODULE]
path = $WSREP_SST_OPT_DATA
[$MODULE-log_dir]
path = $WSREP_LOG_DIR
[$MODULE-data_dir]
path = $INNODB_DATA_HOME_DIR
EOF
# rm -rf "$DATA"/ib_logfile* # we don't want old logs around
# listen at all interfaces (for firewalled setups)
readonly RSYNC_PORT=${WSREP_SST_OPT_PORT:-4444}
cat << EOF > "$STUNNEL_CONF"
key = $SSTKEY
cert = $SSTCERT
foreground = yes
pid = $STUNNEL_PID
debug = warning
client = no
[rsync]
accept = $RSYNC_PORT
exec = $(which rsync)
execargs = rsync --server --daemon --config=$RSYNC_CONF .
EOF
if [ -z "$STUNNEL" ]
then
# listen at all interfaces (for firewalled setups)
rsync --daemon --no-detach --port $RSYNC_PORT --config "$RSYNC_CONF" &
RSYNC_REAL_PID=$!
else
stunnel "$STUNNEL_CONF" &
RSYNC_REAL_PID=$!
RSYNC_PID=$STUNNEL_PID
fi
until check_pid_and_port "$RSYNC_PID" "$RSYNC_REAL_PID" "$RSYNC_PORT"
do
sleep 0.2
done
echo "ready $WSREP_SST_OPT_HOST:$RSYNC_PORT/$MODULE"
# wait for SST to complete by monitoring magic file
while [ ! -r "$MAGIC_FILE" ] && check_pid "$RSYNC_PID" && \
ps -p $MYSQLD_PID >/dev/null
do
sleep 1
done
if ! ps -p $MYSQLD_PID >/dev/null
then
wsrep_log_error \
"Parent mysqld process (PID:$MYSQLD_PID) terminated unexpectedly."
kill -- -"${MYSQLD_PID}"
sleep 1
exit 32
fi
if ! [ -z $WSREP_SST_OPT_BINLOG ]
then
OLD_PWD="$(pwd)"
cd $BINLOG_DIRNAME
if [ -f $BINLOG_TAR_FILE ]
then
# Clean up old binlog files first
rm -f ${BINLOG_FILENAME}.*
wsrep_log_info "Extracting binlog files:"
tar -xvf $BINLOG_TAR_FILE >&2
for ii in $(ls -1 ${BINLOG_FILENAME}.*)
do
if ! [ -z $WSREP_SST_OPT_BINLOG_INDEX ]
echo ${BINLOG_DIRNAME}/${ii} >> ${BINLOG_FILENAME}.index
then
echo ${BINLOG_DIRNAME}/${ii} >> ${BINLOG_INDEX_DIRNAME}/${BINLOG_INDEX_FILENAME}.index
fi
done
fi
cd "$OLD_PWD"
fi
if [ -r "$MAGIC_FILE" ]
then
# UUID:seqno & wsrep_gtid_domain_id is received here.
cat "$MAGIC_FILE" # Output : UUID:seqno wsrep_gtid_domain_id
else
# this message should cause joiner to abort
echo "rsync process ended without creating '$MAGIC_FILE'"
fi
wsrep_cleanup_progress_file
# cleanup_joiner
else
wsrep_log_error "Unrecognized role: '$WSREP_SST_OPT_ROLE'"
exit 22 # EINVAL
fi
rm -f $BINLOG_TAR_FILE || :
exit 0