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Added wsrep specific files
This commit is contained in:
Seppo Jaakola
214
scripts/wsrep_sst_rsync.sh
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214
scripts/wsrep_sst_rsync.sh
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#!/bin/bash -ue
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# Copyright (C) 2010 Codership Oy
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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; version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU 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; see the file COPYING. If not, write to the
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# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston
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# MA 02110-1301 USA.
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# This is a reference script for rsync-based state snapshot tansfer
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RSYNC_PID=
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RSYNC_CONF=
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cleanup_joiner()
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{
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echo "Joiner cleanup:" >&2
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set -x
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local PID=$(cat "$RSYNC_PID" 2>/dev/null || echo 0)
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[ "0" != "$PID" ] && kill $PID && sleep 0.5 && kill -9 $PID || :
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set +x
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rm -rf "$RSYNC_CONF"
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rm -rf "$MAGIC_FILE"
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rm -rf "$RSYNC_PID"
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}
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check_pid()
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{
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local pid_file=$1
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[ -r $pid_file ] && ps -p $(cat $pid_file) >/dev/null 2>&1
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}
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check_pid_and_port()
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{
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local pid_file=$1
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local rsync_pid=$(cat $pid_file)
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local rsync_port=$2
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check_pid $pid_file && \
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netstat -anpt 2>/dev/null | \
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grep LISTEN | grep \:$rsync_port | grep $rsync_pid/rsync >/dev/null
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}
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ROLE=$1
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ADDR=$2
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AUTH=$3
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DATA=$4
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CONF=$5
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MAGIC_FILE="$DATA/rsync_sst_complete"
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rm -rf "$MAGIC_FILE"
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if [ "$ROLE" = "donor" ]
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then
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UUID=$6
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SEQNO=$7
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BYPASS=$8
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if [ $BYPASS -eq 0 ]
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then
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FLUSHED="$DATA/tables_flushed"
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rm -rf "$FLUSHED"
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# Use deltaxfer only for WAN
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inv=$(basename $0)
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[ "$inv" = "wsrep_sst_rsync_wan" ] && WHOLE_FILE_OPT="" \
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|| WHOLE_FILE_OPT="--whole-file"
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echo "flush tables"
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# wait for tables flushed and state ID written to the file
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while [ ! -r "$FLUSHED" ] && ! grep -q ':' "$FLUSHED" >/dev/null 2>&1
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do
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sleep 0.2
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done
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STATE="$(cat $FLUSHED)"
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rm -rf "$FLUSHED"
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sync
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# Old filter - include everything except selected
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# FILTER=(--exclude '*.err' --exclude '*.pid' --exclude '*.sock' \
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# --exclude '*.conf' --exclude core --exclude 'galera.*' \
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# --exclude grastate.txt --exclude '*.pem' \
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# --exclude '*.[0-9][0-9][0-9][0-9][0-9][0-9]' --exclude '*.index')
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# New filter - exclude everything except dirs (schemas) and innodb files
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FILTER=(-f '+ /ibdata*' -f '+ /ib_logfile*' -f '+ */' -f '-! */*')
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RC=0
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rsync --archive --no-times --ignore-times --inplace --delete --quiet \
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$WHOLE_FILE_OPT "${FILTER[@]}" "$DATA" rsync://$ADDR || RC=$?
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[ $RC -ne 0 ] && echo "rsync returned code $RC:" >> /dev/stderr
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case $RC in
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0) RC=0 # Success
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;;
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12) RC=71 # EPROTO
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echo "rsync server on the other end has incompatible protocol. " \
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"Make sure you have the same version of rsync on all nodes."\
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>> /dev/stderr
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;;
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22) RC=12 # ENOMEM
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;;
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*) RC=255 # unknown error
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;;
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esac
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[ $RC -ne 0 ] && exit $RC
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else # BYPASS
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STATE="$UUID:$SEQNO"
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fi
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echo "continue" # now server can resume updating data
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echo "$STATE" > "$MAGIC_FILE"
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rsync -aqc "$MAGIC_FILE" rsync://$ADDR
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echo "done $STATE"
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elif [ "$ROLE" = "joiner" ]
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then
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MYSQLD_PID=$6
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MODULE="rsync_sst"
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RSYNC_PID="$DATA/$MODULE.pid"
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if check_pid $RSYNC_PID
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then
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echo "rsync daemon already running."
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exit 114 # EALREADY
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fi
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rm -rf "$RSYNC_PID"
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RSYNC_PORT=$(echo $ADDR | awk -F ':' '{ print $2 }')
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if [ -z "$RSYNC_PORT" ]
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then
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RSYNC_PORT=4444
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ADDR="$(echo $ADDR | awk -F ':' '{ print $1 }'):$RSYNC_PORT"
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fi
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trap "exit 32" HUP PIPE
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trap "exit 3" INT TERM
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trap cleanup_joiner EXIT
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MYUID=$(id -u)
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MYGID=$(id -g)
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RSYNC_CONF="$DATA/$MODULE.conf"
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cat << EOF > "$RSYNC_CONF"
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pid file = $RSYNC_PID
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use chroot = no
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[$MODULE]
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path = $DATA
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read only = no
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timeout = 300
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uid = $MYUID
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gid = $MYGID
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EOF
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# rm -rf "$DATA"/ib_logfile* # we don't want old logs around
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# listen at all interfaces (for firewalled setups)
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rsync --daemon --port $RSYNC_PORT --config "$RSYNC_CONF"
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until check_pid_and_port $RSYNC_PID $RSYNC_PORT
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do
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sleep 0.2
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done
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echo "ready $ADDR/$MODULE"
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# wait for SST to complete by monitoring magic file
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while [ ! -r "$MAGIC_FILE" ] && check_pid "$RSYNC_PID" && \
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ps -p $MYSQLD_PID >/dev/null
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do
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sleep 1
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done
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if ! ps -p $MYSQLD_PID >/dev/null
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then
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echo "Parent mysqld process (PID:$MYSQLD_PID) terminated unexpectedly." >&2
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exit 32
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fi
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if [ -r "$MAGIC_FILE" ]
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then
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cat "$MAGIC_FILE" # output UUID:seqno
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else
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# this message should cause joiner to abort
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echo "rsync process ended without creating '$MAGIC_FILE'"
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fi
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# cleanup_joiner
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else
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echo "Unrecognized role: $ROLE"
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exit 22 # EINVAL
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fi
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exit 0
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