MySQL在Ubuntu上启动出错

AppArmor parser error for /etc/apparmor.d/usr.sbin.mysqld in /etc/apparmor.d/usr.sbin.mysqld at line 9: Could not open 'abstractions/mysql'

执行下面的三条命了解决：

rm -rf /etc/apparmor.d/abstractions/mysql 
rm -rf /etc/apparmor.d/cache/usr.sbin.mysqld 
find / -name 'mysql*' -exec rm -rf {} \;

参考：
https://stackoverflow.com/questions/37165586/mysql-installation-ubuntu-server-could-not-open-abstractions-mysql

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