Fixing broken myslq-server package after upgrade to 12.04
Solution 1
Reinstalling your complete system is not needed. If anything you can always do
sudo apt-get remove --purge mysql-server
sudo apt-get install mysql-server-5.5
Things that happend when I installed mysql and ran into trouble:
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It is possible your missing or have a corrupt
/etc/my.cnf
(see the message about a problem in .cnf?). If so ...sudo mv /etc/mysql/my.cnf /etc/mysql/my.cnf.old sudo cp /etc/mysql/my.cnf.dpkg-old /etc/mysql/my.cnf /etc/init.d/mysql start
Ofcourse do 1st check if you have a my.cnf.dpkg.dist
Solution 2
That answer is hugely dangerous to anyone that has mysql databases, as it will delete all of them. And it is not necessary to perform such a procedure. Simply do:
sudo touch /etc/apparmor.d/local/usr.sbin.mysqld
service mysqld start
And mysql will return to normal state, mysql will be running and your databases will end alive not erased..
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umpirsky
Updated on September 18, 2022Comments
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umpirsky over 1 year
After upgrade to 12.04 mysql server was unable to start.
I tried many different things but without any luck.
Now when I try to install it, I get:
$ sudo apt-get install mysql-server-5.5 Reading package lists... Done Building dependency tree Reading state information... Done Suggested packages: tinyca The following NEW packages will be installed: mysql-server-5.5 0 upgraded, 1 newly installed, 0 to remove and 39 not upgraded. Need to get 0 B/8,708 kB of archives. After this operation, 31.3 MB of additional disk space will be used. Preconfiguring packages ... Selecting previously unselected package mysql-server-5.5. (Reading database ... 243325 files and directories currently installed.) Unpacking mysql-server-5.5 (from .../mysql-server-5.5_5.5.22-0ubuntu1_i386.deb) ... Processing triggers for man-db ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot Setting up mysql-server-5.5 (5.5.22-0ubuntu1) ... 120509 20:32:08 [Note] Plugin 'FEDERATED' is disabled. 120509 20:32:08 InnoDB: The InnoDB memory heap is disabled 120509 20:32:08 InnoDB: Mutexes and rw_locks use GCC atomic builtins 120509 20:32:08 InnoDB: Compressed tables use zlib 1.2.3.4 120509 20:32:08 InnoDB: Initializing buffer pool, size = 128.0M 120509 20:32:08 InnoDB: Completed initialization of buffer pool InnoDB: Error: log file ./ib_logfile0 is of different size 0 67108864 bytes InnoDB: than specified in the .cnf file 0 5242880 bytes! 120509 20:32:09 [ERROR] Plugin 'InnoDB' init function returned error. 120509 20:32:09 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 120509 20:32:09 [ERROR] Unknown/unsupported storage engine: InnoDB 120509 20:32:09 [ERROR] Aborting 120509 20:32:09 [Note] /usr/sbin/mysqld: Shutdown complete start: Job failed to start invoke-rc.d: initscript mysql, action "start" failed. dpkg: error processing mysql-server-5.5 (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: mysql-server-5.5 E: Sub-process /usr/bin/dpkg returned an error code (1)
Can someone suggest some way to fix this or I must to reinstall entire system?
Thanks in advance.
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umpirsky about 12 yearsThank you very much for your quick response, really appreciate it. Here is what I got gist.github.com/548158a51643a9ddc78a :( BTW, I have no /etc/mysql/my.cnf.dpkg-dist, here is what I have gist.github.com/813c6b5164a9d50e2fb3, my.cnf.dpkg-old probably.
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umpirsky about 12 yearsI replaced my.cnf with my.cnf.dpkg-old and it did the trick, thanks a bunch!
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Aki about 12 yearsI don't have any file called my.cnf. What should I do?
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umpirsky about 12 yearsWhat do you have in
/etc/mysql
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Rinzwind about 12 years@indigon could be... it could also be on a totally different location. Default it is in /etc/mysql. There should also be a default there (see the answer for the name ;) )