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Installing MySQL Database Software

by Michael Greifenkamp (February 20th, 2004)

After getting Apache installed, the next step for me to configure my new server was to install MySQL database software. I downloaded the Standard edition of 4.0.17 for x86 Linux from MySQL's website.

Again, I downloaded the gzipped file to my user directory on the server, and logged in as the superuser (root).

# su -l
(Enter your password to log in as root.)

# mkdir /home/installers/mysql
# mv /home/username/mysql*.gz /home/installers/mysql
# cd /home/installers/mysql
# gzip -d mysql*.gz
# tar xvf mysql*.tar
# mv mysql*i686 /usr/local
# cd /usr/local
# chown -R root:root mysql*
# ln -s mysql-standard-4.0.17-pc-linux-i686 mysql
# cd mysql
# scripts/mysql_install_db

The next thing to do is create a user and group "mysql." And then the most important part--changing the permissions so that the user mysql owns what it needs to in order to use the database software.

# useradd -m mysql
# passwd mysql

(Enter a new password for user mysql.)

# cd /usr/local/mysql
# chown mysql data
# chgrp mysql data
# cd data
# chown mysql *
# chgrp mysql *
# cd mysql
# chown mysql *
# chgrp mysql *

Now we can start up MySQL and make sure it is working properly:

# cd /usr/local/mysql
# bin/safe_mysqld &
# bin/mysqladmin ping

(It should reply "mysqld is alive.")

Next we need to set a root password.

# bin/mysqladmin -uroot password (type your password here)

Still with me? Okay, now let's test the installation, and finally, shut it down.

# bin/mysql -uroot -p
Enter password:
(Enter your password)
> use mysql;
> select * from db;
> quit;
# cd /usr/local/mysql/
# bin/mysqladmin -uroot -p shutdown
Enter password:
(Enter your password)

Piece of cake, eh? Just make sure you do the permissions properly. Now, to sum up:

# cd /usr/local/mysql
# bin/safe_mysqld &
# bin/mysqladmin -uroot -p ping
Enter password:
(Enter your password)
mysqld is alive
# bin/mysqladmin -uroot -p shutdown
Enter password:
(Enter your password)

Now I realize that this doesn't offer much in the way of how to actually *use* MySQL, but there is lots of very good documentation online. Have fun!

Next up, installing PHP...

--Michael