Mysql Database Server Installation and Configuration in Ubuntu
Posted by Admin on September 11th, 2006
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Installing Mysql database in Ubuntu
#apt-get install mysql-server mysql-client libmysqlclient12-dev
MySQL initially only allows connections from the localhost (127.0.0.1). We’ll need to remove that restriction if you wish to make it accessible to everyone on the internet. Open the file /etc/mysql/my.cnf
#vi /etc/mysql/my.cnf
Find the line bind-address = 127.0.0.1 and comment it out
…
#bind-address = 127.0.0.1
…
You can check your configuration using the following command
#netstat -tap
Output Looks like below
tcp 0 0 *:mysql *:* LISTEN 4997/mysqld
MySQL comes with no root password as default. This is a huge security risk. You’ll need to set one. So that the local computer gets root access as well, you’ll need to set a password for that too. The local-machine-name is the name of the computer you’re working on. For more information see here
#mysqladmin -u root password your-new-password
#mysqladmin -h root@local-machine-name -u root -p password your-new-password
#/etc/init.d/mysql restart
If you are looking how to create database,tables and other things check here
If you are looking for webinterface administration or GUI tools for your mysql database check here
November 6th, 2006 at 1:20 pm
Hi!
I have installed mysql server on my Ubuntu Desktop; and works fine, but I want to change de mysql datadir. Do yo know how can I change that? If I edit my.conf the line datadir for my directori, mysql never restarts.
The new datadir is with the same permissions, and content.
Any ideas? Wy in apache is easy to change but in mysql not?
November 6th, 2006 at 1:51 pm
Hi Lois,
Here is the procedure how to change Mysql default data directory
By default, MySQL’s datadir is placed in the /var/lib/mysql directory.
Create the directory that will be new datadir (ex:-/home/db)
chown the directory to the mysql:mysql user
sudo chown -R mysql:mysql /home/db/*
You need to stop the mysql server using the following command
sudo /etc/init.d/mysql stop
Now you need to edit the /etc/mysql/my.cnf file
sudo vi /etc/mysql/my.cnf
and look for “datadir = /var/lib/mysql” this si where mysql database default data directory here you need to change this one to your new directory
datadir = /home/db
copy the files from the old datadir to the new location. However, make sure that the files named
ib_arch_log_0000000000, ib_logfile0 etc. are not copied to the newer location.
Make sure that the files and directories are owned by mysql user
Make changes in the my.cnf to point the new datadir.
Restart the MySQL database
sudo /etc/init.d/mysql start
hope this helps
November 6th, 2006 at 9:29 pm
Yeah!!! you’re my hero! my problem was the direcotri privilegies in the new datadir; but that’s it with the chown -R mysql:mysql.
Do it after copying the files.
Thanks for all!
April 10th, 2007 at 12:36 pm
why can not I use
sudo /etc/mysql/my.cnf
and I have /etc/my.cnf
so I used
sudo /etc/my.cnf
it said command not found
I did not find “datadir = /var/lib/mysql” in the file my.cnf either.
I want to change the directory of the database, because not enough disk space left.
anybody knows , Please help me, Thanks a lot.
April 10th, 2007 at 3:14 pm
you need to make sure you have vi editor installed in your machine otherwise install vi using the following command
#apt-get install vim
Now you need to edit the file using the following command
sudo vi /etc/mysql/my.cnf
If you install mysql in debian or ubuntu from packages you will find the above file without any problem.
Please give us which operating system you are running and how did you installed mysql server in your machine.
July 12th, 2008 at 6:32 pm
Since apparmor is now standard in ubuntu (at least since hardy, which is the release I’m working with now) you will also have to make a change to /etc/apparmor/apparmor.d/usr.sbin.mysqld as well in order to change the datadir. I needed to add the lines
/home/mysql/ r,
/home/mysql/** rwk,
to enable the correct access permissions to the new data directory.
August 7th, 2008 at 10:32 pm
Thank you so so so so soooo much, nickrud. Your comment saved me. I’ve been trying this for the past 3 hours and it’s 5am (over here) now. I wonder where to look for such gotchas like that… How would a newbie like me know about apparmor? It’s even a standard and I had no clue it existed…
September 3rd, 2008 at 1:53 pm
Another thing you should not forget is to restart /etc/init.d/apparmor after changing the /etc/apparmor.d/usr.sbin.mysqld file. I wondered why it did not work
September 19th, 2008 at 10:53 pm
Hey
One of our application developer requested to change the ownership of my.cnf file from root to mysql user and mysql group.
I was thinking about it could not think of any reason why I cannot do this.
Would this be ok or is there a reason why we shoulc have /etc/my.cnf owned by root.
Let me know.
Thanks,
SArang
December 4th, 2008 at 11:21 am
Thanks! It works!!!
December 16th, 2008 at 8:38 am
Greate nickrud, you really help me.
March 18th, 2009 at 10:50 pm
Thanx!!! It almost worked… BUT I have a problem: after I configured directory privileges and apparmor and MYSQL conf file – everything seems to work fine. BUT the problem is – I can not create NEW DATABASES – it tells me error#13. Does anybody know something about this problem?
Thanks in advance!
April 15th, 2009 at 9:52 am
thanks for the solution
May 6th, 2009 at 1:26 pm
Hello
I am getting some errors that I cannot understand/resolve:
I am trying to reset the root password for mysql and this happens
mysqladmin: connect to server at ‘localhost’ failed
error: ‘Access denied for user ‘root’@'localhost’ (using password: NO)’
How do I fix this.
July 23rd, 2009 at 6:30 pm
Hi,
I get the same error:
mysqladmin: connect to server at ‘localhost’ failed
error: ‘Access denied for user ‘root’@’localhost’ (using password: NO)’
Don’t get it!
Cheers
July 24th, 2009 at 3:35 pm
Hello,
How are you logging into mysql. Is it something like this?
$ mysql -u root -p