MySQL Workbench 5.2 RC provides:
1. Data Modeling
2. Query (upgrade from MySQL Query Browser)
3. Admin (upgrade from MySQL Administrator)

Please get your copy from this page

Step 1 is to stop MySQL service with

# /etc/init.d/mysql stop

or

# service mysqld stop

Step 2 is to start MySQL w/o root password

# mysqld_safe --skip-grant-tables &

Step 3 is to connect with mysql client

# mysql -u root

Step 4 is to finally change old root password with

mysql> use mysql;
mysql> update user set password=PASSWORD("NEW-ROOT-PASSWORD") where User='root';
mysql> flush privileges;
mysql> quit

Step 5 is to stop mysql server and restart it without –skip-grant-tables parameter

# /etc/init.d/mysql stop

Step 6 is to start mysql server and test it with

# /etc/init.d/mysql start
# mysql -u root -p

Note:

After you install your new server, it is very good idea to improve the security of your MySQL installation with

# mysql_secure_installation

With mysql_secure_installation wizard you can set a password for root account, you can remove root accounts that are accessible from outside the local host, you can remove anonymous-user accounts and you can remove the test database, which by default can be accessed by anonymous users. The script will prompt you to determine which actions to perform.

Current features allow to test the following system parameters:

* file I/O performance
* scheduler performance
* memory allocation and transfer speed
* POSIX threads implementation performance
* database server performance (OLTP benchmark)
(Primarily written for MySQL server benchmarking, SysBench will be further extended to support multiple database backends, distributed benchmarks and third-party plug-in modules)

I couldn’t find CentOS RPM so here are few tips how to install it manually.

Download Sysbench (current version is 0.4.12)

# wget http://garr.dl.sourceforge.net/sourceforge/sysbench/sysbench-0.4.12.tar.gz

Then unpack it and install with

# tar -xvzf sysbench-0.4.12.tar.gz
# cd sysbench-0.4.12
# libtoolize --force --copy 
# ./autogen.sh
# ./configure
# make
# make install

To test CPU performance you can try

# sysbench --test=cpu --cpu-max-prime=20000 run

For MySQL test, you’ll need to prepare database for testing with

# sysbench --test=oltp --mysql-table-engine=innodb --oltp-table-size=500000 --mysql-user=test_database --mysql-password=test_database_password --mysql-socket=/var/lib/mysql/mysql.sock prepare

(replace test_database with valid username and test_database_password with valid password)

This command will create sample table inside test_database and it will have 500 000 rows (InnoDB engine).

sysbench 0.4.12:  multi-threaded system evaluation benchmark
 
No DB drivers specified, using mysql
Creating table 'test-database'...
Creating 500000 records in table 'test-database'...

Now to start read test

# sysbench --num-threads=16 --max-requests=100000 --test=oltp --oltp-table-size=500000 --mysql-socket=/var/lib/mysql/mysql.sock --oltp-read-only --mysql-user=test_database --mysql-password=test_database_password run

For read-write test you can try

# sysbench --num-threads=16 --max-requests=10000 --test=oltp --oltp-table-size=500000 --mysql-socket=/var/lib/mysql/mysql.sock --oltp-test-mode=complex --mysql-user=test_database --mysql-password=test_database_password run

More info about specific parameters can be found in official docs (http://sysbench.sourceforge.net/docs/)

Log in to mysql console:

 
[root@hydra mysql]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 248
Server version: 5.0.45 Source distribution
 
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
 
mysql>

Here you can see server version (in this case 5.0.45). With next command you can see all databases

 
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| birds              |
| mysql              |
| private             |
| bdd1             |
| test               |
+--------------------+
6 rows in set (0.05 sec)
 
mysql>

If you want to create a new database, enter next command (remember that all SQL commands must be terminated with ; )

mysql> create database db1;
Query OK, 1 row affected (0.00 sec)

Now we need to assign a user to newly created database. Also, we need to grant him all privileges for this database but restrict access and operations on another databases (except test database)

mysql> CREATE USER 'db1'@'localhost' IDENTIFIED BY 'db1pass';
Query OK, 0 rows affected (0.02 sec)
 
mysql> GRANT ALL PRIVILEGES ON db1.* TO 'db1'@'localhost' IDENTIFIED BY 'db1pass';
Query OK, 0 rows affected (0.01 sec)
 
mysql> quit;
Bye

After this you can repeat step from the beginning and test new user account. In next posts I will present phpMyadmin