感受AppArmor

ubuntu 8.04 server

今天 /var/ 分区装满了,于是把 /var/lib/mysql/ 目录给挪到别处,结果重启动 MySQL 失败。日志显示 mysqld 会尝试创建一个 hostname.lower-test 文件,以确定对 datadir 目录有写权限

我 su 到 mysql 用户,进目录,发现可以创建文件

于是想到可能是安全框架的问题。找了一下
/etc/apparmor.d/usr.sbin.mysqld 文件里写着/usr/sbin/mysqld可以访问的目录和权限。把新的目录加进去,就正常了

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