某个数据库机器报/var分区使用率高

[root@hydb2 ~]#  df -h
Filesystem                     Size  Used Avail Use% Mounted on
devtmpfs                        95G   64K   95G   1% /dev
tmpfs                           95G  644M   94G   1% /dev/shm
tmpfs                           95G  1.9G   93G   2% /run
tmpfs                           95G     0   95G   0% /sys/fs/cgroup
/dev/mapper/ol-root            410G  5.7G  4.4G  57% /
/dev/sdg2                       10G  247M  9.8G   3% /boot
/dev/sdg1                       10G  8.6M   10G   1% /boot/efi
/dev/mapper/ol-var             5.0G  3.1G  2.0G  62% /var
tmpfs                           19G   12K   19G   1% /run/user/42
tmpfs                           19G     0   19G   0% /run/user/0

 通过层层目录查找，发现

1、/var/spool/postfix/maildrop/目录下小文件特别的多，占用空间大，

处理办法：find /var/spool/postfix/maildrop/ -type f -mtime +1 |xargs rm -rf

2、/root/spool/abrt/目录下小文件多，占用空间大

处理办法：清理oops和ccpp文件后，关闭服务

查看自启动的服务
systemctl list-unit-files | grep enable|grep abrtd
systemctl stop abrtd.service;systemctl disable abrtd.service
systemctl stop abrt-oops.service;systemctl disable abrt-oops.service
systemctl stop abrt-ccpp.service;systemctl disable abrt-ccpp.service