1.停止相关服务，避免写入数据

service zabbix_server stop

service httpd stop

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$ sudo /etc/init.d/zabbix-server stop

$ sudo /etc/init.d/apache2 stop

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2.执行备份数据库脚本

sh dbbackup.sh

3.清空历史数据

$ mysql -uroot -p

use zabbix;

truncate table history;

optimize table history; 

truncate table history_uint;

optimize table history_uint;

truncate table trends;

optimize table trends;

truncate table trends_uint; 

optimize table trends_uint; 

4. 启动相关服务

service zabbix_server start

service httpd start