source: content/databases/mysql/mysql-config.xml@ c55e298

<sect2>
<title>Configuring <application>My<acronym>SQL</acronym></application></title>

<sect3>
<title>Config files</title>

<para><filename>/etc/my.cnf</filename>, <filename>~/.my.cnf</filename></para>

</sect3>

<sect3>
<title>Configuration Information</title>

<para>There are several default configurations file available in
<filename class="directory">/usr/share/mysql</filename> which you can use.</para>

<screen><userinput><command>cp /usr/share/mysql/my-medium.cnf /etc/my.cnf</command></userinput></screen>

<para>We can now install a database and change the ownership to the
unprivileged user and group.</para>

<screen><userinput><command>mysql_install_db &amp;&amp;
chown -R mysql:mysql /var/lib/mysql</command></userinput></screen>

<para>Further configuration requires that the mysql server be running:</para>

<screen><userinput><command>mysqld_safe --user=mysql 2&gt;&amp;1 &gt;/dev/null &amp;</command></userinput></screen>

<para>A default installation does not setup a password for the administrator
so here we will set one. Replace <replaceable>[new-password]</replaceable>
with your own.</para>

<!--
<screen><userinput><command>mysql -uroot mysql</command></userinput>
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2 to server version: 3.23.51-log

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

<prompt>mysql&gt;</prompt> <userinput><command>UPDATE user SET password=password('<replaceable>new-password</replaceable>') WHERE user='root';</command></userinput>
Query OK, 2 rows affected (0.00 sec)
Rows matched: 2  Changed: 2  Warnings: 0

<prompt>mysql&gt;</prompt> <userinput><command>FLUSH PRIVILEGES;</command></userinput>
Query OK, 0 rows affected (0.00 sec)

<prompt>mysql&gt;</prompt> <userinput><command>EXIT;</command></userinput>
bye
</screen>
-->

<screen><userinput><command>mysqladmin -u root password <replaceable>[new-password]</replaceable></command></userinput></screen>

<para>Now that we are done with the configuration of the server, we can
shut it down.</para>

<screen><userinput><command>mysqladmin -p shutdown</command></userinput></screen>

<para>To automate the running of <application>My<acronym>SQL</acronym></application>, use the following command to create
the init.d script:</para>

<screen><userinput><command>cat &gt; /etc/rc.d/init.d/mysql &lt;&lt; "EOF"</command>
#!/bin/bash
# Begin $rc_base/init.d/

# Based on sysklogd script from LFS-3.1 and earlier.
# Rewritten by Gerard Beekmans  - gerard@linuxfromscratch.org

source /etc/sysconfig/rc
source $rc_functions

pid_file=/var/lib/mysql/`/bin/hostname`.pid

case "$1" in
        start)
                echo "Starting MySQL daemon..."
                failure=0
                if test -f "$pid_file"
                then
                    if /bin/ps p `cat $pid_file` | grep mysqld &gt;/dev/null
                    then
                        print_status warning running
                        exit 0
                    else
                        rm -f $pid_file
                        if test -f $pid_file
                        then
                            failure=1
                        fi
                    fi
                fi
                if [ $failure = 1 ]
                then
                    print_status failure
                else
                    /usr/bin/mysqld_safe --user=mysql 2&gt;&amp;1 &gt;/dev/null &amp;
                    evaluate_retval
                fi
                ;;

        stop)
                echo "Stopping MySQL daemon..."
                if test -s "$pid_file"
                then
                    kill `cat $pid_file`
                    sleep 1
                    failure=0
                    while [ -s $pid_file -a "$flags" != aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ]
                    do
                        [ -z "$flags" ]
                        flags=a$flags
                        sleep 1
                    done
                    if [ -s $pid_file ]
                        then failure=1
                    fi
                    (exit $failure)
                    evaluate_retval
                else
                    print_status warning not_running
                fi
                ;;

        restart)
                $0 stop
                sleep 1
                $0 start
                ;;

        status)
                statusproc /usr/sbin/mysqld
                ;;

        *)
                echo "Usage: $0 {start|stop|restart|status}"
                exit 1
                ;;
esac

# End $rc_base/init.d/
<command>EOF
chmod 755 /etc/rc.d/init.d/mysql</command></userinput></screen>

<para>Create the symbolic links to this file in the relevant
<filename class="directory">rc.d</filename> directory
with the following commands:</para>

<screen><userinput><command>cd /etc/rc.d/init.d &amp;&amp;
ln -sf ../init.d/mysql ../rc0.d/K26mysql &amp;&amp;
ln -sf ../init.d/mysql ../rc1.d/K26mysql &amp;&amp;
ln -sf ../init.d/mysql ../rc2.d/K26mysql &amp;&amp;
ln -sf ../init.d/mysql ../rc3.d/S34mysql &amp;&amp;
ln -sf ../init.d/mysql ../rc4.d/S34mysql &amp;&amp;
ln -sf ../init.d/mysql ../rc5.d/S34mysql &amp;&amp;
ln -sf ../init.d/mysql ../rc6.d/K26mysql</command></userinput></screen>

<para>Finally, add this entry to your <filename>ld.so.conf</filename>
file so that programs which utilize
<application>My<acronym>SQL</acronym></application> can find its
libraries:</para>

<screen><userinput><command>echo /usr/lib/mysql &gt;&gt; /etc/ld.so.conf</command></userinput></screen>

</sect3>

</sect2>