start job failed to start mysql ubuntu
原因时我将var整个目录的组权限设置为www-data了,
试了网上的办法都不行(有个妥协方法是重新安装, 但很不好),
最后,通过重新设置正确权限解决
root@iZ238w18zieZ:/var/lib# ll total 196 drwxr-xr-x 43 root root 4096 Jul 18 20:01 ./ drwxr-xr-x 12 root root 4096 Oct 24 14:16 ../ drwx------ 7 mysql mysql 4096 Oct 25 15:07 mysql/
root@iZ238w18zieZ:/var/log# ll /var/log/mysql*
-rw-r----- 1 mysql adm 0 Oct 12 2014 /var/log/mysql.err
-rw-r----- 1 mysql adm 0 Nov 7 06:25 /var/log/mysql.log
-rw-r----- 1 mysql adm 20 Nov 6 06:25 /var/log/mysql.log.1.gz
-rw-r----- 1 mysql adm 20 Nov 5 06:25 /var/log/mysql.log.2.gz
-rw-r----- 1 mysql adm 20 Nov 4 06:25 /var/log/mysql.log.3.gz
-rw-r----- 1 mysql adm 20 Nov 3 06:25 /var/log/mysql.log.4.gz
-rw-r----- 1 mysql adm 20 Nov 2 06:25 /var/log/mysql.log.5.gz
-rw-r----- 1 mysql adm 20 Nov 1 06:25 /var/log/mysql.log.6.gz
-rw-r----- 1 mysql adm 20 Oct 31 06:25 /var/log/mysql.log.7.gz
/var/log/mysql:
total 36
drwxr-s--- 2 mysql adm 4096 Nov 7 06:25 ./
drwxr-xr-x 13 root root 4096 Nov 7 06:25 ../
-rw-r----- 1 mysql adm 0 Nov 7 06:25 error.log
-rw-r----- 1 mysql adm 20 Nov 6 06:25 error.log.1.gz
-rw-r----- 1 mysql adm 20 Nov 5 06:25 error.log.2.gz
-rw-r----- 1 mysql adm 20 Nov 4 06:25 error.log.3.gz
-rw-r----- 1 mysql adm 20 Nov 3 06:25 error.log.4.gz
-rw-r----- 1 mysql adm 20 Nov 2 06:25 error.log.5.gz
-rw-r----- 1 mysql adm 20 Nov 1 06:25 error.log.6.gz
-rw-r----- 1 mysql adm 20 Oct 31 06:25 error.log.7.gz
root@iZ238w18zieZ:/var/log#
原文：http://www.cnblogs.com/jingzhishen/p/4945602.html