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remerging wsrep files from lp:codership-mysql
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Seppo Jaakola
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28 changed files with 7898 additions and 0 deletions
222
scripts/wsrep_sst_xtrabackup.sh
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222
scripts/wsrep_sst_xtrabackup.sh
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#!/bin/bash -ue
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# Copyright (C) 2011 Percona 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; 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 Percona XtraBackup-based state snapshot tansfer
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TMPDIR="/tmp"
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. $(dirname $0)/wsrep_sst_common
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cleanup_joiner()
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{
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#set -x
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local PID=$(ps -aef |grep nc| grep $NC_PORT | awk '{ print $2 }')
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wsrep_log_info "Killing nc pid $PID"
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[ -n "$PID" -a "0" != "$PID" ] && kill $PID && (kill $PID && kill -9 $PID) || :
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rm -f "$MAGIC_FILE"
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#set +x
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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 $pid_file) >/dev/null 2>&1
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}
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kill_xtrabackup()
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{
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#set -x
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local PID=$(cat $XTRABACKUP_PID)
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[ -n "$PID" -a "0" != "$PID" ] && kill $PID && (kill $PID && kill -9 $PID) || :
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rm -f "$XTRABACKUP_PID"
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#set +x
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}
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# waits ~10 seconds for nc to open the port and then reports ready
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# (regardless of timeout)
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wait_for_nc()
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{
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local PORT=$1
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local ADDR=$2
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local MODULE=$3
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for i in $(seq 1 50)
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do
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netstat -nptl 2>/dev/null | grep '/nc\s*$' | awk '{ print $4 }' | \
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sed 's/.*://' | grep \^${PORT}\$ >/dev/null && break
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sleep 0.2
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done
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echo "ready ${ADDR}/${MODULE}"
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}
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INNOBACKUPEX_BIN=innobackupex
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INNOBACKUPEX_ARGS=""
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NC_BIN=nc
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for TOOL_BIN in INNOBACKUPEX_BIN NC_BIN ; do
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if ! which ${!TOOL_BIN} > /dev/null 2>&1
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then
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echo "Can't find ${!TOOL_BIN} in the path"
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exit 22 # EINVAL
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fi
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done
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#ROLE=$1
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#ADDR=$2
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readonly AUTH=(${WSREP_SST_OPT_AUTH//:/ })
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readonly DATA="${WSREP_SST_OPT_DATA}"
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#CONF=$5
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INFO_FILE="xtrabackup_galera_info"
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IST_FILE="xtrabackup_ist"
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MAGIC_FILE="${DATA}/${INFO_FILE}"
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rm -f "${MAGIC_FILE}"
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if [ "$WSREP_SST_OPT_ROLE" = "donor" ]
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then
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# UUID=$6
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# SEQNO=$7
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# BYPASS=$8
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NC_PORT=$(echo $WSREP_SST_OPT_ADDR | awk -F '[:/]' '{ print $2 }')
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REMOTEIP=$(echo $WSREP_SST_OPT_ADDR | awk -F ':' '{ print $1 }')
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if [ $WSREP_SST_OPT_BYPASS -eq 0 ]
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then
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INNOBACKUPEX_ARGS="--galera-info --tmpdir=${TMPDIR} --stream=tar
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--defaults-file=${WSREP_SST_OPT_CONF}
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--socket=${WSREP_SST_OPT_SOCKET}"
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if [ "${AUTH[0]}" != "(null)" ]; then
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INNOBACKUPEX_ARGS="${INNOBACKUPEX_ARGS} --user=${AUTH[0]}"
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fi
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if [ ${#AUTH[*]} -eq 2 ]; then
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INNOBACKUPEX_ARGS="${INNOBACKUPEX_ARGS} --password=${AUTH[1]}"
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fi
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set +e
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# This file and variable seems to have no effect and probably should be deleted
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XTRABACKUP_PID=$(mktemp --tmpdir wsrep_sst_xtrabackupXXXX.pid)
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${INNOBACKUPEX_BIN} ${INNOBACKUPEX_ARGS} ${TMPDIR} \
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2> ${DATA}/innobackup.backup.log | \
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${NC_BIN} ${REMOTEIP} ${NC_PORT}
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RC=( "${PIPESTATUS[@]}" )
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set -e
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if [ ${RC[0]} -ne 0 ]; then
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wsrep_log_error "${INNOBACKUPEX_BIN} finished with error: ${RC[0]}. " \
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"Check ${DATA}/innobackup.backup.log"
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exit 22
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elif [ ${RC[1]} -ne 0 ]; then
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wsrep_log_error "${NC_BIN} finished with error: ${RC[1]}"
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exit 22
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fi
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if check_pid ${XTRABACKUP_PID}
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then
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wsrep_log_error "xtrabackup process is still running. Killing... "
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kill_xtrabackup
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exit 22
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fi
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rm -f ${XTRABACKUP_PID}
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else # BYPASS
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STATE="${WSREP_SST_OPT_GTID}"
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echo "continue" # now server can resume updating data
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echo "${STATE}" > "${MAGIC_FILE}"
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echo "1" > "${DATA}/${IST_FILE}"
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(cd ${DATA}; tar cf - ${INFO_FILE} ${IST_FILE}) | ${NC_BIN} ${REMOTEIP} ${NC_PORT}
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rm -f ${DATA}/${IST_FILE}
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fi
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echo "done ${WSREP_SST_OPT_GTID}"
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elif [ "${WSREP_SST_OPT_ROLE}" = "joiner" ]
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then
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MODULE="xtrabackup_sst"
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rm -f ${DATA}/xtrabackup_*
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ADDR=${WSREP_SST_OPT_ADDR}
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NC_PORT=$(echo ${ADDR} | awk -F ':' '{ print $2 }')
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if [ -z "${NC_PORT}" ]
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then
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NC_PORT=4444
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ADDR="$(echo ${ADDR} | awk -F ':' '{ print $1 }'):${NC_PORT}"
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fi
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wait_for_nc ${NC_PORT} ${ADDR} ${MODULE} &
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# trap "exit 32" HUP PIPE
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# trap "exit 3" INT TERM
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trap cleanup_joiner HUP PIPE INT TERM
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set +e
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${NC_BIN} -dl ${NC_PORT} | tar xfi - -C ${DATA} 1>&2
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RC=( "${PIPESTATUS[@]}" )
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set -e
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wait %% # join wait_for_nc thread
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if [ ${RC[0]} -ne 0 -o ${RC[1]} -ne 0 ];
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then
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wsrep_log_error "Error while getting st data from donor node: " \
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"${RC[0]}, ${RC[1]}"
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exit 32
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fi
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if [ ! -r "${MAGIC_FILE}" ]
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then
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# this message should cause joiner to abort
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wsrep_log_error "xtrabackup process ended without creating '${MAGIC_FILE}'"
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exit 32
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fi
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if ! ps -p ${WSREP_SST_OPT_PARENT} >/dev/null
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then
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wsrep_log_error "Parent mysqld process (PID:${WSREP_SST_OPT_PARENT}) terminated unexpectedly." >&2
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exit 32
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fi
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if [ ! -r "${IST_FILE}" ]
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then
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rm -f ${DATA}/ib_logfile*
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${INNOBACKUPEX_BIN} --defaults-file=${WSREP_SST_OPT_CONF} --apply-log \
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--ibbackup=xtrabackup ${DATA} 1>&2 2> ${DATA}/innobackup.prepare.log
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if [ $? -ne 0 ];
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then
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wsrep_log_error "${INNOBACKUPEX_BIN} finished with errors. Check ${DATA}/innobackup.prepare.log" >&2
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exit 22
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fi
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fi
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cat "${MAGIC_FILE}" # output UUID:seqno
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else
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wsrep_log_error "Unrecognized role: ${WSREP_SST_OPT_ROLE}"
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exit 22 # EINVAL
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fi
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exit 0
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