一键安装MySQL 主从复制SHELL脚本
#!/bin/bash. /etc/rc.d/init.d/functions
if [ $# -ne 0 ];then
echo "Usage:sh `basename $0`"
exit 1
fi
#MASTER VARIABLES
MASTER_USER=root
MASTER_PASS="terjoy2016"
MASTER_PORT=3306
MASTER_IP="192.168.1.31"
REP_USER='rep'
REP_PWD='rep123'
MASTER_DATA_PATH=/data/backup
MASTER_STATUS_FILE=${MASTER_DATA_PATH}/mysqllogs_`date +%F`.log
MASTER_DATA_FILE=${MASTER_DATA_PATH}/mysql_backup_`date +%F`.sql.gz
MYSQL_DIR=/usr/local/mysql/bin
MASTER_MYSQL_CMD="$MYSQL_DIR/mysql -u$MASTER_USER -p$MASTER_PASS -h$MASTER_IP -P$MASTER_PORT"
MASTER_MYSQL_DUMP="$MYSQL_DIR/mysqldump -u$MASTER_USER -p$MASTER_PASS -h$MASTER_IP -P$MASTER_PORT-A-B -F --single-transaction --events "
#SLAVE VARIABLES
SLAVE_USER=root
SLAVE_PASS="terjoy2016"
SLAVE_PORT=3307
SLAVE_IP="192.168.1.31"
SLAVE_MYSQL_CMD="$MYSQL_DIR/mysql -u$SLAVE_USER -p$SLAVE_PASS -h$SLAVE_IP -P$SLAVE_PORT"
TO_MAIL="737735250@qq.com"
SENDMAIL="mail -v -s "MySQL-Slave-build-status" $TO_MAIL"
[ ! -d $MASTER_DATA_PATH ] && mkdir -p $MASTER_DATA_PATH
[ `$MASTER_MYSQL_CMD -e "select user,host from mysql.user" 2> /dev/null |grep rep|wc -l` -ne 1 ] &&\
$MASTER_MYSQL_CMD -e "grant replication slave on *.* to 'rep'@'192.168.1.%' identified by 'rep123';" 2> /dev/null
[ $? -eq 0] && action "主库创建复制用户" /bin/true
$MASTER_MYSQL_CMD -e "flush tables with read lock;"2> /dev/null
[ $? -eq 0] && action "开始锁表" /bin/true ||action "开始锁表" /bin/false || exit 1
echo "-----show master status result-----" >$MASTER_STATUS_FILE
$MASTER_MYSQL_CMD -e "show master status;" 2> /dev/null >>$MASTER_STATUS_FILE
[ $? -eq 0] && action "查看MASTER状态" /bin/true ||action "查看MASTER状态" /bin/false ||exit 1
#echo "${MASTER_MYSQL_DUMP} | gzip > $MASTER_DATA_FILE"
${MASTER_MYSQL_DUMP} 2> /dev/null | gzip > $MASTER_DATA_FILE
[ $? -eq 0] && action "备份主库" /bin/true || action "备份主库" /bin/false || exit 1
$MASTER_MYSQL_CMD -e "unlock tables;" >/dev/null 2>&1
[ $? -eq 0] && action "表锁释放" /bin/true
#cat $MASTER_STATUS_FILE
###############################################################################
#recover
[ -d ${MASTER_DATA_PATH} ]&& cd ${MASTER_DATA_PATH} && rm -f mysql_backup_`date +%F`.sql
gzip -d mysql_backup_`date +%F`.sql.gz
[ $? -eq 0] && action "解压备份文件" /bin/true || action "解压备份文件" /bin/false || exit 1
$SLAVE_MYSQL_CMD2> /dev/null < mysql_backup_`date +%F`.sql
[ $? -eq 0] && action "恢复数据至从库" /bin/true || action "恢复数据至从库" /bin/false || exit 1
MASTER_LOG_FILE=`tail -1 $MASTER_STATUS_FILE|cut -f1`
MASTER_LOG_POS=`tail -1 $MASTER_STATUS_FILE|cut -f2`
#config slave
$SLAVE_MYSQL_CMD -e "\
CHANGE MASTER TO\
MASTER_HOST='$MASTER_IP', \
MASTER_PORT=$MASTER_PORT, \
MASTER_USER='$REP_USER', \
MASTER_PASSWORD='$REP_PWD', \
MASTER_LOG_FILE='$MASTER_LOG_FILE',\
MASTER_LOG_POS=$MASTER_LOG_POS;" 2> /dev/null
if [ $? -eq 0] ;then
action "执行CHANGE MASTER TO命令" /bin/true
else
action "执行CHANGE MASTER TO命令" /bin/false
$SLAVE_MYSQL_CMD -e "show slave status\G" 2> /dev/null >> $MASTER_STATUS_FILE
#echo "$SENDMAIL < $MASTER_STATUS_FILE"
$SENDMAIL< $MASTER_STATUS_FILE 2> /dev/null
exit 1
fi
$SLAVE_MYSQL_CMD -e "start slave;" 2> /dev/null
[ $? -eq 0] && action "启动从库复制" /bin/true || action "启动从库复制" /bin/false || exit 1
$SLAVE_MYSQL_CMD -e "show slave status\G" 2> /dev/null |egrep "IO_Running|SQL_Running">>$MASTER_STATUS_FILE
MasterLogFile=`$SLAVE_MYSQL_CMD -e "show slave status\G" 2> /dev/null |egrep -i "\"| awk '{print $2}'`
RelayMasterLogFile=`$SLAVE_MYSQL_CMD -e "show slave status\G" 2> /dev/null |egrep -i "\"| awk '{print $2}'`
ReadMasterLogPos=`$SLAVE_MYSQL_CMD -e "show slave status\G" 2> /dev/null |egrep -i "\"| awk '{print $2}'`
ExecMasterLogPos=`$SLAVE_MYSQL_CMD -e "show slave status\G" 2> /dev/null |egrep -i "\"| awk '{print $2}'`
REP_STATUS=`$SLAVE_MYSQL_CMD -e "show slave status\G" 2> /dev/null |egrep "Slave_IO_Running|Slave_SQL_Running" |grep -c "Yes"`
if [ $MasterLogFile == $RelayMasterLogFile] && [ $ReadMasterLogPos == $ExecMasterLogPos] && [ $REP_STATUS -eq 2 ];then
action "主从复制状态检测正常" /bin/true
else
action "主从复制状态检测正常" /bin/false
$SLAVE_MYSQL_CMD -e "show slave status\G" 2> /dev/null >> $MASTER_STATUS_FILE
$SENDMAIL< $MASTER_STATUS_FILE 2> /dev/null
exit 1
fi
$SENDMAIL< $MASTER_STATUS_FILE 2> /dev/null
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