实战：INNOBACKUPEX for mysql 5.6自己主动还原脚本-v2

脚本再次更新,共享一下！

#!/bin/sh

#

# 用法：

# ./restore.sh /你备份文件的全路径

#[e-mail]

INNOBACKUPEX=innobackupex

INNOBACKUPEX_PATH=/usr/bin/$INNOBACKUPEX

TMP_LOG="/var/log/restore.$$.log"

MY_CNF=/usr/local/mysql/my.cnf

BACKUP_DIR=/backup # 你的备份主文件夹

FULLBACKUP_DIR=$BACKUP_DIR/full # 全库备份的文件夹

INCRBACKUP_DIR=$BACKUP_DIR/incre # 增量备份的文件夹

MEMORY=4096M # 还原的时候使用的内存限制数

ERRORLOG=`grep -i "^log-error" $MY_CNF |cut -d = -f 2`

MYSQLD_SAFE=/usr/local/mysql/bin/mysqld_safe

MYSQL_PORT=3306

#############################################################################

#显示错误

#############################################################################

error()

{

    echo "$1" 1>&2

    exit 1

}

#############################################################################

# 检查innobackupex错误输出

#############################################################################

check_innobackupex_fail()

{

    if [ -z "`tail -2 $TMP_LOG | grep 'completed OK!'`" ] ; then

    echo "$INNOBACKUPEX命令运行失败:"; echo

    echo "---------- $INNOBACKUPEX的错误输出 ----------"

    cat $TMP_LOG

    #保留一份备份的具体日志

    logfiledate=restore.`date +%Y%m%d%H%M`.txt

    cat $TMP_LOG>/backup/$logfiledate 

    rm -f $TMP_LOG

    exit 1

  fi

}

# 选项检測

if [ ! -x $INNOBACKUPEX_PATH ]; then

  error "$INNOBACKUPEX_PATH在指定路径不存在,请确认是否安装或核实链接是否正确."

fi

if [ ! -d $BACKUP_DIR ]; then

  error "备份文件夹$BACKUP_DIR不存在."

fi

if [ $# != 1 ] ; then

  error "用法: $0 使用还原文件夹的绝对路径"

fi

if [ ! -d $1 ]; then

  error "还原到:$1不存在."

fi

# Some info output

echo "----------------------------"

echo

echo "$0: MySQL还原脚本"

START_RESTORE_TIME=`date +%F' '%T' '%w`

echo "数据库还原開始于: $START_RESTORE_TIME"

echo

PARENT_DIR=`dirname $1`

if [ $PARENT_DIR = $FULLBACKUP_DIR ]; then

 FULLBACKUP=$1

 echo "还原`basename $FULLBACKUP`"

 echo

else

 if [ `dirname $PARENT_DIR` = $INCRBACKUP_DIR ]; then

 INCR=`basename $1`

 FULL=`basename $PARENT_DIR`

 FULLBACKUP=$FULLBACKUP_DIR/$FULL

  if [ ! -d $FULLBACKUP ]; then

  error "全备:$FULLBACKUP不存在."

  fi

 echo "还原$FULL到增量$INCR"

 echo

 echo "Prepare完整备份集..........."

 echo "*****************************"

 $INNOBACKUPEX_PATH --defaults-file=$MY_CNF --apply-log --redo-only --use-memory=$MEMORY $FULLBACKUP > $TMP_LOG 2>&1

 check_innobackupex_fail

#推断lsn

 check_incre_file=`find $PARENT_DIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n " | sort -nr  |grep -v '^$' | head -n 1`

check_incre_lastlsn=${PARENT_DIR}/${check_incre_file}/xtrabackup_checkpoints

fetch_incre_lastlsn=`grep -i "^last_lsn" ${check_incre_lastlsn} |cut -d = -f 2`

check_full_file=`find $FULLBACKUP/ -mindepth 1 -maxdepth 1 -type d -printf "%P\n " | sort -nr  |grep -v '^$' | head -n 1`

check_full_lastlsn=$FULLBACKUP/${check_full_file}/xtrabackup_checkpoints

fetch_full_lastlsn=`grep -i "^last_lsn" ${check_incre_lastlsn} |cut -d = -f 2`

# Prepare增量备份集,即将增量备份应用到全备文件夹中

 for i in `find $PARENT_DIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -n`;

 do

 ######推断LSN

  if [ "${fetch_incre_lastlsn}"="${fetch_full_lastlsn}" ];then

  echo "*****************************************"

  echo "LSN不须要prepare!"

  echo "*****************************************"

  echo

  break

  else

######推断LSN

  echo "Prepare增量备份集$i........"

  echo "*****************************"

  $INNOBACKUPEX_PATH --defaults-file=$MY_CNF --apply-log --redo-only --use-memory=$MEMORY $FULLBACKUP --incremental-dir=$PARENT_DIR/$i > $TMP_LOG 2>&1

  check_innobackupex_fail

if [ $INCR = $i ]; then

  break

  fi

fi

 ######推断LSN

 done

 

 else

 error "未知的备份类型"

 fi

fi

echo "prepare全备集，回滚那些未提交的事务..........."

$INNOBACKUPEX_PATH --defaults-file=$MY_CNF --apply-log --use-memory=$MEMORY $FULLBACKUP > $TMP_LOG 2>&1

check_innobackupex_fail

echo "*****************************"

echo "1.数据库还原中 ...请稍等"

echo "*****************************"

$INNOBACKUPEX_PATH --defaults-file=$MY_CNF --copy-back $FULLBACKUP > $TMP_LOG 2>&1

check_innobackupex_fail

rm -f $TMP_LOG

echo "2.恭喜,还原成功!."

echo "*****************************"

#改动文件夹权限

echo "改动mysql文件夹的权限."

mysqlcnf="/usr/local/mysql/my.cnf"

mysqldatadir=`grep -i "^basedir" $mysqlcnf |cut -d = -f 2`

`echo 'chown -R mysql:mysql' ${mysqldatadir}`

echo "3.权限改动成功!"

echo "*****************************"

#自己主动启动mysql

INIT_NUM=1

if [ ! -x $MYSQLD_SAFE ]; then

  echo "mysql安装时启动文件未安装到$MYSQLD_SAFE或无运行权限"

  exit 1  #0是运行成功,1是运行不成功

else

 echo "启动本机mysqlport为:$MYSQL_PORT的服务"

 $MYSQLD_SAFE --defaults-file=$MY_CNF  > /dev/null &

 while  [ $INIT_NUM  -le 6 ]

 do

 PORTNUM=`netstat -lnt|grep ${MYSQL_PORT}|wc -l`

 echo "mysql启动中....请稍等..."

 sleep 5

  if [ $PORTNUM = 1  ];

  then

   echo "mysql                                      ****启动成功****"

  exit 0

  fi 

 INIT_NUM=$(($INIT_NUM +1))

 done

   echo -e "mysql启动失败或启动时间过长,请检查错误日志`echo 'cat ' ${ERRORLOG}`"

 echo "*****************************************"

 exit 0

fi

END_RESTORE_TIME=`date +%F' '%T' '%w`

echo "数据库还原完毕于: $END_RESTORE_TIME"

exit 0