一. 脚本须知
1.mysql数据文件和二进制日志文件最好保存在不同的分区或存储设备上
2.备份完成后注意修改数据的权限以防止泄露重要信息，哪些主机哪些用户可以用来恢复
3. 查看导出的2进制日志文件看是否符合逻辑和业务，2进制日志文件只能保证物理上数据即时点还原，却保证不了数据逻辑上正确恢复（比如drop语句）
4.为了保证数据恢复没有问题建议在测试机上做一次数据恢复测试
5.恢复测试OK可以放到crontab定时任务中
1 #!/bin/bash
2 #
3 # Function：实现mysql完全备份
4 # Notes：
5
6 # 定义备份使用到的相关变量（需要根据用户实际环境做相应的修改）
7 backup_data=/backup/mysql/full
8 backup_binlog=/backup/mysql/logbin
9 mysql_binlog=/mydata/log-bin
10 mysql_bin_path=`ps -ef | grep -E "mysqld[[:space:]]+" | awk -F ‘ ‘ ‘{ print $8 }‘ | sed -r ‘[email protected][^/]+/[email protected]@‘`
11 mysql_user=root
12 mysql_password=mysqldba
13 logfile=/var/log/mysqldump.log
14
15 # 函数定义
16
17 ########################[MySQL健康检测]######################
18 health_check() {
19 if pgrep mysqld &> /dev/null;then
20 mysqld_pid=`pgrep -l mysqld | grep -E "mysqld\>" | awk ‘{ print $1 }‘`
21 echo "$(date +"%Y-%m-%d %H:%M:%S") $mysqld_pid [Note] Server Mysql is Running ..." >> $logfile
22 else
23 service mysqld start &> /dev/null || echo "$(date +"%Y-%m-%d %H:%M:%S") [Warning] Server MySQL is not running, backup failed" >> $logfile && return 5
24 fi
25 }
26
27 #######################[mysqldump完全备份]###################
28 full_backup(){
29 local backup_name=full-`date +%F-%T`.sql
30 [ ! -d $backup_data ] && mkdir -p $backup_data
31 ${mysql_bin_path}mysqldump -u$mysql_user -p$mysql_password --all-databases --lock-all-tables --flush-logs --master-data=2 32 --triggers --routines --events --set-gtid-purged=off -r ${backup_data}/$backup_name &> /dev/null
33 if grep -q "CHANGE MASTER TO" ${backup_data}/$backup_name ;then
34 return 0
35 else
36 return 5
37 fi
38 }
39
40 ########################[Mysql 二进制日志备份]#####################
41 bin_backup(){
42 [ ! -d $backup_binlog ] && mkdir -p $backup_binlog
43 cd $mysql_binlog
44 tar -jcf bin-`date +"%F-%H‘%M‘%S"`.tar.bz2 * &> /dev/null
45 \mv -f bin*.tar.bz2 $backup_binlog
46 }
47
48 # 主函数main
49
50 health_check
51 if [ $? -eq 0 ];then
52 echo "$(date +"%Y-%m-%d %H:%M:%S") [Note] MySQL full backup start ..." >> $logfile
53 else
54 echo "$(date +"%Y-%m-%d %H:%M:%S") [Warning] Server MySQL is not running, backup failed" | mail -s "mysql backup is failed" [email protected]`hostname`
55 fi
56 full_backup
57 if [ $? -eq 0 ];then
58 echo "$(date +"%Y-%m-%d %H:%M:%S") [Note] MySQL full backup is finished" >> $logfile
59 chmod -R 600 $backup_data
60 else
61 echo "$(date +"%Y-%m-%d %H:%M:%S") [Warning] Function full_backup() execution failed, backup was interrupted" | cat | tee -a $logfile | mail -s "mysql backup is failed" [email protected]`hostname`
62 fi
63 echo "$(date +"%Y-%m-%d %H:%M:%S") [Note] MySQL binary log file backup is started ..." >> $logfile
64 bin_backup
65 if [ $? -eq 0 ];then
66 echo "$(date +"%Y-%m-%d %H:%M:%S") [Note] MySQL binary log file backup is finished " >> $logfile
67 chmod -R 600 $backup_binlog
68 else
69 echo "$(date +"%Y-%m-%d %H:%M:%S") [Warning] Mysql binary log file backup is not completed" | cat | tee -a $logfile | mail -s "mysql binary log backup failed" [email protected]`hostname`
70 fi
二.实例效果图
脚本执行完查看备份数据和日志
脚本执行过程跟踪
加入crontab任务
时间： 2024-10-30 23:32:55