nagios链接mysql 报错

nagios配置到mysql的链接，全部步骤都对的，可是nagios日志提示链接数据库报错，信息以下：ndomod: Could not open data sink! I'll keep trying, but some output may get lost...，解决步骤

1、删除文件/usr/local/nagiso/var/ndo.scok

2、重启ndo2db，/usr/local/nagios/bin/ndo2db-3x  -c  /usr/local/nagios/etc/ndo2db.cfg

3、重启nagios

4、查看nagios日志，信息以下： ndomod: Successfully connected to data sink. 1735 queued items to flush.

5、问题解决，若是报错could not bind socket,Address alread in use，也是这样操做