mysql临时表空间不够导致主从复制失败该怎么办

今天早上上班，有用户反应今天的数据没有更新，于是看下slave进程
mysql> show slave status\G;

........

Slave_IO_Running: Yes

Slave_SQL_Running: No

Last_SQL_Error: Error 'Got error 28 from storage engine' on query. Default database: 'CDM'. Query: 'insert into CDM.cdm_bill_itemized

SELECT c.user_id,a.invest_id,a.create_date,a.loan_info_id,'equ_id' equ_id,a.account_id,a.count_num,a.count_total,

.......

从库sql进程出了问题，从错误来看是因为临时表空间满了，先看一下tepdir指定到哪个目录下了

mysql> show variables like 'tmpdir';

+---------------+-------+

| Variable_name | Value |

+---------------+-------+

| tmpdir| /tmp |

+---------------+-------+

1 row in set (0.02 sec)

root@trcloud-gtt-dw ~]# df -lh

Filesystem Size Used Avail Use% Mounted on

/dev/vda120G 20G0 100% /

tmpfs 5.9G0 5.9G 0% /dev/shm

/dev/vdb1 493G 107G 361G 23% /data

果然根目录满了，没有空间给临时表空间使用了

修改参数文件

tmpdir = /data/DB/mysql

重启

mysql> show slave status\G;

......

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

......

Last_IO_Errno: 0

Last_IO_Error:

Last_SQL_Errno: 0

Last_SQL_Error:

......

都正常了