使用shell实现mysql自动全备、增备&日志备份
数据库热备脚本：vim backup.sh
#!/bin/sh
time=`date "+%Y%m%d_%H%M%S"`
host=`hostname`
week=`date +%w`
monitor="/home/mysql/monitor/mysql_hotbackup_status.txt" ##zabbix监控文件
time_start=`date +%s`
n=2 ###要周几做全备，周日是0，周一到周六依次为1~6
function init_dir()
{
chkdir="/home/mysql/chkpoint"
logdir="/home/mysql/log/xtrabackup_log"
monitordir="/home/mysql/monitor"
shelldir="/home/mysql/shell"
remotedir="/prlife/backup/mysqlbackup/databak/${host}"
if [ ! -d $chkdir ]
then
mkdir -p $chkdir
fi
if [ ! -d $logdir ]
then
mkdir -p $logdir
fi
if [ ! -d $monitordir ]
then
mkdir -p $monitordir
fi
if [ ! -d $shelldir ]
then
mkdir -p $shelldir
fi
if [ ! -d $remotedir ]
then
mkdir -p $remotedir
fi
chown -R mysql:mysql $remotedir $chkdir $logdir $monitordir $shelldir
}
function init_check_file()
{
if [ ! -d $monitor ]
then
rm -fr $monitor
fi
}
function check_status()
{
status=`cat ${1}|grep "completed OK"|wc -l`
if [ $status -eq 2 ]
then
##success backup status
echo 0 > ${monitor}
else
##fail backup status
echo 1 > ${monitor}
fi
}
###check dir is exist or not####
init_dir
###according to backup policy to run xtrabackup###
if [ $week -eq $n ]
then
init_check_file
/bin/sh /home/mysql/shell/mysql_xtrabackup.sh full >> /home/mysql/log/xtrabackup_log/${host}_${time}_full.log 2>&1
check_status /home/mysql/log/xtrabackup_log/${host}_${time}_full.log;
else
init_check_file
/bin/sh /home/mysql/shell/mysql_xtrabackup.sh incr >> /home/mysql/log/xtrabackup_log/${host}_${time}_incr.log 2>&1
check_status /home/mysql/log/xtrabackup_log/${host}_${time}_incr.log;
fi
###get the backup log and spend time of backup###
time_end=`date +%s`
times=$((${time_end}-${time_start}))
if [ $week -eq $n ]
then
echo "it takes ${times} seconds to backup the full backup!!!" >> /home/mysql/log/xtrabackup_log/${host}_${time}_full.log
else
echo "it takes ${times} seconds to backup the incr backup!!!" >> /home/mysql/log/xtrabackup_log/${host}_${time}_incr.log
fi
###数据库备份策略###
###周日全备，周一~周六增量备份###
vim mysql_xtrabackup.sh
#!/bin/bash
if [ $# -ne 1 ]
then
echo "usage: `basename $0` "
exit 1
fi
name=`hostname` # the name for bakcup
conf_file="/etc/my.cnf" # the mysql config file
bakuser="root"
bakpass="xxx"
bakdir="/tmp" # the directory to backup
baklog="/home/mysql/log"
host="localhost"
innobackupex="innobackupex"
remotedir="/prlife/backup/mysqlbackup/databak/${name}"
time=`date "+%Y%m%d_%H%M%S"` # don't modify
yesterday=`date+"%Y%m%d" -d"-1 days"`
chkpointdir="/home/mysql/chkpoint/"
full() {
##创建日备份目录
mkdir ${remotedir}/${name}_${time}_full/
##调用xtrabackup工具实现热备
${innobackupex} --defaults-file=${conf_file} --user=${bakuser} --password=${bakpass} --host=${host} --slave-info --stream=xbstream --compress --extra-lsndir=${chkpointdir} --parallel=4 --throttle=120 ${bakdir} |xbstream -x -C ${remotedir}/${name}_${time}_full/
##备份配置文件
cp ${conf_file} ${remotedir}/${name}_${time}_full/
}
incr() {
##创建日备份目录
mkdir /${remotedir}/${name}_${time}_incr/
##获取上一次的备份位置点
lsn=`cat ${chkpointdir}/xtrabackup_checkpoints|grep to_lsn|awk '{print $NF}'`
##调用xtrabackup工具实现热备
innobackupex --defaults-file=${conf_file} --user=${bakuser} --password=${bakpass} --host=${host} --slave-info --stream=xbstream --compress --extra-lsndir=${chkpointdir} --parallel=4 --throttle=120 --incremental --incremental-lsn=${lsn}${bakdir} |xbstream -x -C ${remotedir}/${name}_${time}_incr/
##备份配置文件
cp ${conf_file} ${remotedir}/${name}_${time}_incr/
}
case "$1" in
full)
full
;;
incr)
incr
;;
*)
echo "Usage: $0 full|incr"
esac
需求场景：
备份策略：周日全备，周一到周六增备。
备份路径：异地备份，压缩备份。
前提条件：mysql服务器同备份机mysql02配置了ssh互信。
数据库日志备份脚本：
vim binlog_mysql01.sh
#!/bin/sh
BACKUP_BIN="/usr/bin/mysqlbinlog"
LOCAL_BACKUP_DIR="/mysqlbackup/logbak/mysql01/"
BACKUP_LOG="/home/mysql/log/binlog_log"
REMOTE_HOST="192.168.1.1"
REMOTE_PORT="3306"
REMOTE_USER="backup"
REMOTE_PASS="backup"
FIRST_BINLOG="mysql-bin.000001"
#time to wait before reconnecting after failure
SLEEP_SECONDS=10
##create local_backup_dir if necessary
mkdir -p ${LOCAL_BACKUP_DIR}
cd ${LOCAL_BACKUP_DIR}
## 运行while循环，连接断开后等待指定时间，重新连接
while :
do
if [ `ls -A "${LOCAL_BACKUP_DIR}" |wc -l` -eq 0 ];then
LAST_FILE=${FIRST_BINLOG}
else
LAST_FILE=`ls -l ${LOCAL_BACKUP_DIR} | grep -v backuplog |tail -n 1 |awk '{print $9}'`
fi
${BACKUP_BIN} --raw --read-from-remote-server --stop-never --host=${REMOTE_HOST} --port=${REMOTE_PORT} --user=${REMOTE_USER} --password=${REMOTE_PASS} ${LAST_FILE}
echo "`date +"%Y/%m/%d %H:%M:%S"` mysqlbinlog停止，返回代码：$?" | tee -a ${BACKUP_LOG}
echo "${SLEEP_SECONDS}秒后再次连接并继续备份" | tee -a ${BACKUP_LOG}
sleep ${SLEEP_SECONDS}
done
nohup sh binlog_mysql01.sh 方式启动脚本，实时备份binlog数据。
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