一个linux中mysql完全备份,增量备份及恢复脚本实现程序,有需要的朋友可参考一下,可以把它做成定时备份,代码如下:
- #!/bin/bash
- # full && increment backup and recover
- # 说明:事先要确保存在/data/bak目录,且要保证在执行增量备份时已做过至少一次全量备份,否则找不到position文件.
- port='3306'
- back_src_dir="/data/mysql/${port}/logs/binlog"
- back_dir='/data/bak'
- DATE=`date +%Y%m%d`
- user='root'
- pass='cy2009'
- bak_db='test1'
- mysql_bin='/usr/local/mysql-5.1.48/bin'
- socket="/data/mysql/${port}/mysql.sock"
- full_bak()
- {
- cd ${back_dir}
- DumpFile=Full_back$DATE.sql
- ${mysql_bin}/mysqldump --lock-all-tables --flush-logs --master-data=2 -u${user} -p${pass} ${bak_db} > ${DumpFile}
- ${mysql_bin}/mysql -u${user} -p${pass} --socket=${socket} -e "unlock tables"
- #把当前的binlog和position信息存入position文件
- cat ${DumpFile} |grep 'MASTER_LOG_FILE'|awk -F"'" '{print $2}' > ${back_dir}/position
- cat ${DumpFile} |grep 'MASTER_LOG_FILE'|awk -F"=" '{print $3}' |awk -F";" '{print $1}' >> ${back_dir}/position
- }
- incre_bak()
- {
- #锁定表,刷新log
- ${mysql_bin}/mysql -u${user} -p${pass} --socket=${socket} -e "flush tables with read lock"
- ${mysql_bin}/mysqladmin -u${user} -p${pass} --socket=${socket} flush-logs
- #获取上次备份完成时的binlog和position
- cd ${back_dir}
- start_binlog=`sed -n '1p' position`
- start_pos=`sed -n '2p' position`
- #获取目前的binlog和position
- mysql -u${user} -p${pass} --socket=${socket} -e "show master statusG" | awk '{print $2}'| sed -n '2,3p' > now_position
- stop_binlog=`sed -n '1p' now_position`
- stop_pos=`sed -n '2p' now_position`
- #如果在同一个binlog中
- if [ "${start_binlog}" == "${stop_binlog}" ]; then
- ${mysql_bin}/mysqlbinlog --start-position=${start_pos} --stop-position=${stop_pos} ${back_src_dir}/${start_binlog} >> Incr_back$DATE.sql
- #跨binlog备份
- else
- startline=`awk "/${start_binlog}/{print NR}" ${back_src_dir}/mysql-bin.index`
- stopline=`wc -l ${back_src_dir}/mysql-bin.index |awk '{print $1}'`
- for i in `seq ${startline} ${stopline}`
- do
- binlog=`sed -n "$i"p ${back_src_dir}/mysql-bin.index |sed 's/.*///g'`
- case "${binlog}" in
- "${start_binlog}")
- ${mysql_bin}/mysqlbinlog --start-position=${start_pos} ${back_src_dir}/${binlog} >> Incr_back$DATE.sql
- ;;
- "${stop_binlog}")
- ${mysql_bin}/mysqlbinlog --stop-position=${stop_pos} ${back_src_dir}/${binlog} >> Incr_back$DATE.sql
- ;;
- *)
- ${mysql_bin}/mysqlbinlog ${back_src_dir}/${binlog} >> Incr_back$DATE.sql
- ;;
- esac
- done
- fi
- #解除表锁定,并保存目前的binlog和position信息到position文件。
- ${mysql_bin}/mysql -u${user} -p${pass} --socket=${socket} -e "unlock tables"
- cp now_position position
- }
- full_recov()
- {
- cd ${back_dir}
- recov_file1=`ls | grep 'Full_back'`
- ${mysql_bin}/mysql -u${user} -p${pass} --socket=${socket} -e "use ${bak_db}; source ${back_dir}/${recov_file1};"
- }
- incre_recov()
- {
- cd ${back_dir}
- recov_file2=`ls |grep 'Incr_back'`
- ${mysql_bin}/mysql -u${user} -p${pass} --socket=${socket} -e "use ${bak_db}; source ${back_dir}/${recov_file2};"
- }
- while true
- do
- echo -e "tt**************************************"
- echo
- echo -e "tttWelcome to backup program!"
- echo
- echo -e "ttt(1) Full Backup For MySQL"
- echo -e "ttt(2) Increment Backup For MySQL"
- echo -e "ttt(3) Recover From The Full Backup File"
- echo -e "ttt(4) Recover From The Increment Backup File"
- echo -e "ttt(5) Exit The Program!"
- echo
- echo -e "tt**************************************"
- read -p "Enter your choice:" choice
- case $choice in
- )
- echo "now! let's backup the data by full method......."
- full_bak
- echo "succeed!"
- sleep 2
- ;;
- )
- echo "now! let's backup the data by increment method......"
- incre_bak
- echo "succeed"
- sleep 2
- ;;
- )
- echo "now! let's recover from the full back file"
- full_recov
- echo "successful"
- sleep 2
- ;;
- )
- echo "now! let's recover from the increment backup file"
- incre_recov //Vevb.com
- echo "successful"
- sleep 2
- ;;
- )
- break
- ;;
- *)
- echo "Wrong Option! try again!"
- sleep 2
- continue
- ;;
- esac
- done
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