mysql增量备份脚本

#backup.sh
#!/bin/sh

INNOBACKUPEX_PATH=innobackupex 
INNOBACKUPEXFULL=innobackupex
MYSQL_CMD="--user=root --password=nihao123,./" #--host=192.168.5.189
MYSQL_UP=" --user=root --password=nihao123,./" #mysqladmin的用户名和密码
TMPLOG="/tmp/innobackupex.$$.log"
MY_CNF=/etc/my.cnf #mysql的配置文件
MYSQL=/usr/bin/mysql
MYSQL_ADMIN=/usr/bin/mysqladmin
BACKUP_DIR=/data # 备份的主目录
FULLBACKUP_DIR=$BACKUP_DIR/full-backuped # 全库备份的目录
INCRBACKUP_DIR=$BACKUP_DIR/Incremental-backup # 增量备份的目录
FULLBACKUP_INTERVAL=604800  # 全库备份的间隔周期
KEEP_FULLBACKUP=1 # 至少保留几个全库备份
logfiledate=backup.`date +%Y%m%d%H%M`.txt
#开始时间
STARTED_TIME=`date +%s`
#############################################################################
# 显示错误并退出
#############################################################################
error()
{
echo "$1" 1>&2
exit 1
}

# 检查执行环境
if [ ! -x $INNOBACKUPEXFULL ]; then
error "$INNOBACKUPEXFULL未安装或未链接到/usr/bin."
fi

if [ ! -d $BACKUP_DIR ]; then
error "备份目标文件夹:$BACKUP_DIR不存在."
fi

mysql_status=`netstat -nl | awk 'NR>2{if ($4 ~ /.*:3306/) {print "Yes";exit 0}}'`
if [ "$mysql_status" != "Yes" ];then
error "MySQL 没有启动运行."
fi

if ! `echo 'exit' | $MYSQL -s $MYSQL_CMD` ; then
error "提供的数据库用户名或密码不正确!"
fi

# 备份的头部信息
echo "----------------------------"
echo
echo "$0: MySQL备份脚本"
echo "开始于: `date +%F' '%T' '%w`"
echo

#新建全备和差异备份的目录
mkdir -p $FULLBACKUP_DIR
mkdir -p $INCRBACKUP_DIR
#查找最新的完全备份
LATEST_FULL_BACKUP=`find $FULLBACKUP_DIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -nr | head -1`

# 查找最近修改的最新备份时间
LATEST_FULL_BACKUP_CREATED_TIME=`stat -c %Y $FULLBACKUP_DIR/$LATEST_FULL_BACKUP`
#如果全备有效进行增量备份否则执行完全备份
if [ "$LATEST_FULL_BACKUP" -a `expr $LATEST_FULL_BACKUP_CREATED_TIME + $FULLBACKUP_INTERVAL + 5` -ge $STARTED_TIME ] ; then
# 如果最新的全备未过期则以最新的全备文件名命名在增量备份目录下新建目录
echo -e "完全备份$LATEST_FULL_BACKUP未过期,将根据$LATEST_FULL_BACKUP名字作为增量备份基础目录名"
echo " "
NEW_INCRDIR=$INCRBACKUP_DIR/$LATEST_FULL_BACKUP
mkdir -p $NEW_INCRDIR
# 查找最新的增量备份是否存在.指定一个备份的路径作为增量备份的基础
LATEST_INCR_BACKUP=`find $NEW_INCRDIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -nr | head -1`
if [ ! $LATEST_INCR_BACKUP ] ; then
INCRBASEDIR=$FULLBACKUP_DIR/$LATEST_FULL_BACKUP
echo -e "增量备份将以$INCRBASEDIR作为备份基础目录"
echo " "
else
INCRBASEDIR=$INCRBACKUP_DIR/${LATEST_FULL_BACKUP}/${LATEST_INCR_BACKUP}
echo -e "增量备份将以$INCRBASEDIR作为备份基础目录"
echo " "
fi
echo "使用$INCRBASEDIR作为基础本次增量备份的基础目录."
$INNOBACKUPEXFULL --defaults-file=$MY_CNF --use-memory=4G $MYSQL_CMD --incremental $NEW_INCRDIR --incremental-basedir $INCRBASEDIR > $TMPLOG 2>&1
#保留一份备份的详细日志
cat $TMPLOG>/backup/$logfiledate
if [ -z "`tail -1 $TMPLOG | grep 'completed OK!'`" ] ; then
echo "$INNOBACKUPEX命令执行失败:"; echo
echo -e "---------- $INNOBACKUPEX_PATH错误 ----------"
cat $TMPLOG
rm -f $TMPLOG
exit 1
fi
THISBACKUP=`awk -- "/Backup created in directory/ { split( \\\$0, p, \"'\" ) ; print p[2] }" $TMPLOG`
rm -f $TMPLOG
echo -n "数据库成功备份到:$THISBACKUP"
echo
# 提示应该保留的备份文件起点
LATEST_FULL_BACKUP=`find $FULLBACKUP_DIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -nr | head -1`
NEW_INCRDIR=$INCRBACKUP_DIR/$LATEST_FULL_BACKUP
LATEST_INCR_BACKUP=`find $NEW_INCRDIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -nr | head -1`
RES_FULL_BACKUP=${FULLBACKUP_DIR}/${LATEST_FULL_BACKUP}
RES_INCRE_BACKUP=`dirname ${INCRBACKUP_DIR}/${LATEST_FULL_BACKUP}/${LATEST_INCR_BACKUP}`
echo
echo -e '\e[31m --------------------------------------斜线是一种态度:-------------------------------------------.\e[m' #红色
echo -e "必须保留$KEEP_FULLBACKUP份全备即全备${RES_FULL_BACKUP}和${RES_INCRE_BACKUP}目录中所有增量备份."
echo -e '\e[31m --------------------------------------斜线是一种态度:-------------------------------------------.\e[m' #红色
echo
else
echo "*********************************"
echo -e "不要方！正在执行全新的完全备份...等哈哈..."
echo "*********************************"
$INNOBACKUPEXFULL --defaults-file=$MY_CNF $MYSQL_CMD $FULLBACKUP_DIR > $TMPLOG 2>&1 
#保留一份备份的详细日志
cat $TMPLOG>/backup/$logfiledate
if [ -z "`tail -1 $TMPLOG | grep 'completed OK!'`" ] ; then
echo "$INNOBACKUPEX命令执行失败:"; echo
echo -e "---------- $INNOBACKUPEX_PATH错误 ----------"
cat $TMPLOG
rm -f $TMPLOG
exit 1
fi

THISBACKUP=`awk -- "/Backup created in directory/ { split( \\\$0, p, \"'\" ) ; print p[2] }" $TMPLOG`
rm -f $TMPLOG
echo -n "数据库成功备份到:$THISBACKUP"
echo
# 提示应该保留的备份文件起点
LATEST_FULL_BACKUP=`find $FULLBACKUP_DIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -nr | head -1`
RES_FULL_BACKUP=${FULLBACKUP_DIR}/${LATEST_FULL_BACKUP}
echo
echo -e '\e[31m --------------------------------------斜线是一种态度:-------------------------------------------.\e[m' #红色
echo -e "无增量备份,必须保留$KEEP_FULLBACKUP份全备即全备${RES_FULL_BACKUP}."
echo -e '\e[31m --------------------------------------斜线是一种态度:-------------------------------------------.\e[m' #红色
echo
fi
#删除过期的增量备份  
  
echo -e "find expire backup file...........waiting........."  
echo -e "寻找过期的增量备份文件并删除">>/backup/$logfiledate  
for efile1 in $(/usr/bin/find $INCRBACKUP_DIR/ -mtime +8)  
do  
    if [ -d ${efile1} ]; then  
    rm -rf "${efile1}"  
    echo -e "删除过期增量备份文件:${efile}">>/backup/$logfiledate  
    elif [ -f ${efile1} ]; then  
    rm -rf "${efile1}"  
    echo -e "删除过期增量备份文件:${efile}">>/backup/$logfiledate  
    fi;  
      
done  
  
if [ $? -eq "0" ];then  
   echo  
   echo -e "未找到可以删除的过期增量备份文件" 

echo
echo -e '\e[31m --------------------------------------斜线是一种态度:-------------------------------------------.\e[m' #红色

 
fi  
#删除过期的全备
echo -e "find expire backup file...........waiting........."
echo -e "寻找过期的全备文件并删除">>/backup/$logfiledate
for efile in $(/usr/bin/find $FULLBACKUP_DIR/ -mtime +8)
do
if [ -d ${efile} ]; then
rm -rf "${efile}"
echo -e "删除过期全备文件:${efile}">>/backup/$logfiledate
elif [ -f ${efile} ]; then
rm -rf "${efile}"
echo -e "删除过期全备文件:${efile}">>/backup/$logfiledate
fi;

done
if [ $? -eq "0" ];then
echo
echo -e "未找到可以删除的过期全备文件"

echo
echo -e '\e[31m --------------------------------------斜线是一种态度:-------------------------------------------.\e[m' #红色

fi
echo
echo "完成于: `date +%F' '%T' '%w`"
echo
echo -e "我还会回来的！！！"
echo
exit 0