今天为公司新建的uat数据库使用XtraBackup备份时,出现了报错,将解决方法整理、做一下备忘:
服务器系统:
[root@uat-mysql-master tmp]# cat /etc/RedHat-release
CentOS Linux release 7.3.1611 (Core)
mysql版本号:
mysql> select version();
+----------------+
| version() |
+----------------+
| 5.5.47-cll-lve |
+----------------+
1 row in set (0.00 sec)
报错如下:
[root@uat-mysql-master tmp]# innobackupex --defaults-file=/etc/my.cnf --user=backup --password=****** --stream=tar /home/backup/ | gzip >/home/backup/`date +%F_%H-%M-%S`.tar.gz
171120 17:10:42 innobackupex: Starting the backup operation
IMPORTANT: Please check that the backup run completes successfully.
At the end of a successful backup run innobackupex
prints "completed OK!".
171120 17:10:42 version_check Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_group=xtrabackup' as 'backup' (using password: YES).
Failed to connect to MySQL server: DBI connect(';mysql_read_default_group=xtrabackup','backup',...) failed: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) at - line 1314.
171120 17:10:42 Connecting to MySQL server host: localhost, user: backup, password: set, port: not set, socket: not set
Failed to connect to MySQL server: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2).
解决办法:
在命令行中添加
--host=127.0.0.1参数;
备注:网上有的说,通过
# find / -name "mysql.sock"查到socket参数,然后在配置文件中修改,但测试后,不一定能解决问题。
更多XtraBackup相关教程见以下内容:
XtraBackup备份原理和实战详解
Percona XtraBackup 实现全备&增量备份与恢复