Public bug reported: DISTRIB_ID=Ubuntu DISTRIB_RELEASE=8.04 DISTRIB_CODENAME=hardy DISTRIB_DESCRIPTION="Ubuntu hardy (development branch)"
Binary package hint: mysql-common Installed: 5.0.51a-3ubuntu1 Binary package hint: apparmor Installed: 2.1+1075-0ubuntu5 Steps to reproduce: - $ sudo cp -pr /var/lib/mysql /home/mysql - change datadir value in /etc/mysql/my.cnf to /home/mysql - $ sudo /etc/init.d/mysql restart Result: - * Starting MySQL database server mysqld [fail] - Errors in /var/log/daemon.log. See [1]. What's wrong: - There is no information for the user on why startup REALLY failed (apparmor prevented mysqld from writing to /home/mysql) -- nowhere in /var/log/ you'll find a line about apparmor. - There is some output in /var/log/kern.log , but that doesn't say much (see [2]). All available information points to file permissions, but file permissions in fact are OK. So that is very confusing. - The only hint I found related to apparmor when googling was in Bug #197476 which barely seems related by its title. - The same problem can be reproduced in other ways: $ mysqld --datadir=/home/mysql and so on. Suggested fixes: - Include a "# WARNING: you may have to adjust apparmor settings in /etc/apparmor.d/usr.sbin.mysqld if you change default directory and file paths." in /etc/mysql/my.cnf . - Provide logs for apparmor in /var/log that can be grep'ed for "mysqld" and would clearly indicate that this is an apparmor issue ("audit" is not specific enough). Maybe I should file another bug for that? Because that may affect other packages. Logs: [1] /var/log/daemon.log: Mar 13 15:07:42 emilis-laptop mysqld_safe[26177]: started Mar 13 15:07:42 emilis-laptop mysqld[26180]: 080313 15:07:42 [Warning] Can't create test file /home/mysql/emilis-laptop.lower-test Mar 13 15:07:42 emilis-laptop mysqld[26180]: 080313 15:07:42 [Warning] Can't create test file /home/mysql/emilis-laptop.lower-test Mar 13 15:07:42 emilis-laptop mysqld[26180]: 080313 15:07:42 InnoDB: Operating system error number 13 in a file operation. Mar 13 15:07:42 emilis-laptop mysqld[26180]: InnoDB: The error means mysqld does not have the access rights to Mar 13 15:07:42 emilis-laptop mysqld[26180]: InnoDB: the directory. Mar 13 15:07:42 emilis-laptop mysqld[26180]: InnoDB: File name ./ibdata1 Mar 13 15:07:42 emilis-laptop mysqld[26180]: InnoDB: File operation call: 'open'. Mar 13 15:07:42 emilis-laptop mysqld[26180]: InnoDB: Cannot continue operation. Mar 13 15:07:42 emilis-laptop mysqld_safe[26188]: ended Mar 13 15:07:56 emilis-laptop /etc/init.d/mysql[26347]: 0 processes alive and '/usr/bin/mysqladmin --defaults-file=/etc/mysql/debian.cnf ping' resulted in Mar 13 15:07:56 emilis-laptop /etc/init.d/mysql[26347]: ^G/usr/bin/mysqladmin: connect to server at 'localhost' failed Mar 13 15:07:56 emilis-laptop /etc/init.d/mysql[26347]: error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)' Mar 13 15:07:56 emilis-laptop /etc/init.d/mysql[26347]: Check that mysqld is running and that the socket: '/var/run/mysqld/mysqld.sock' exists! Mar 13 15:07:56 emilis-laptop /etc/init.d/mysql[26347]: [2] /var/log/kern.log: Mar 13 15:07:42 emilis-laptop kernel: [16748.861107] audit(1205413662.100:3): operation="inode_create" request_mask="w::" denied_mask="w::" name="/home/mysql/emilis-laptop.lower-test" pid=26179 profile="/usr/sbin/mysqld" namespace="default" Mar 13 15:07:42 emilis-laptop kernel: [16748.861333] audit(1205413662.104:4): operation="inode_create" request_mask="w::" denied_mask="w::" name="/home/mysql/emilis-laptop.lower-test" pid=26179 profile="/usr/sbin/mysqld" namespace="default" Mar 13 15:07:42 emilis-laptop kernel: [16748.884899] audit(1205413662.124:5): operation="inode_permission" request_mask="rw::" denied_mask="rw::" name="/home/mysql/ibdata1" pid=26179 profile="/usr/sbin/mysqld" namespace="default" ** Affects: apparmor (Ubuntu) Importance: Undecided Status: New ** Affects: mysql-dfsg-5.0 (Ubuntu) Importance: Undecided Status: New ** Also affects: apparmor (Ubuntu) Importance: Undecided Status: New -- Confusing mysqld startup failure with apparmor (Hardy) https://bugs.launchpad.net/bugs/201799 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs