This is the chapter of the MemberManual that describes how to use PostgreSQL and MySQL databases on HCoop servers.
MySQL
Create an Account
Creating a MySQL user account is an easy task with dbtool. It is available for use when you login to mire.hcoop.net.
Run the following command:
dbtool mysql adduser
You will be asked for a password. The user created will be the same as your log-in username.
Create a Database
dbtool is also used to create new MySQL databases. Replace DATABASE with your desired database name:
dbtool mysql createdb DATABASE
The database created will be USER_DATABASE (where USER is your username and DATABASE is the name you provided dbtool).
Delete a Database
Delete a database with the following:
dbtool mysql dropdb DATABASE
Changing Your Password
If you need to change your MySQL password for security purposes or you have forgotten it, you may do so with this command:
dbtool mysql passwd
You will be prompted to input a new password.
Accessing Databases
For web applications, set the MySQL host/server to mysql. Default ports apply. Use your HCoop username. Your password will be required. Please safeguard it. Remember that your database is really named USER_DATABASE, where DATABASE is the name you originally gave dbtool. Follow your software package's instructions.
In addition, you can easily use the mysql shell to manipulate or analyze your databases:
mysql -p -h mysql USER_DATABASE
For security reasons, you cannot drop a database using the mysql shell.
To learn more about the MySQL shell, review the [http://dev.mysql.com/doc/refman/5.0/en/ MySQL manual].
PostgreSQL
Create an Account
To create a PostgreSQL user account, enter the following command on mire.hcoop.net:
dbtool postgres adduser
You will not be prompted for a password since PostgreSQL utilizes a security model that is quite different from MySQL. The user created will be the same as your log-in username.
Create a Database
Additionally, dbtool is used to create new Postgres databases. Replace DATABASE with your desired database name:
dbtool postgres createdb DATABASE
The database created will be called USER_DATABASE (where USER is your username and DATABASE is the name you provided dbtool).
Delete a Database
Delete a database with the following command:
dbtool postgres dropdb DATABASE
For security reasons, you cannot drop a database using the psql shell.
Changing Your Password
If you need to change your PostgreSQL password for security purposes or you have forgotten it, you may do so with this command:
dbtool postgres passwd
You will be prompted to input a new password.
Accessing Databases
For web applications, set the PostgreSQL host/server to postgres. Default ports apply. Use your HCoop username. A password is not required. Remember that your database is really named USER_DATABASE, where DATABASE is the name you originally gave dbtool. Follow your software package's instructions.
It is very easy to access your database using a PostgreSQL shell:
psql -h postgres USER_DATABASE
To learn more about the psql shell, take a look at the [http://www.postgresql.org/docs/8.1/interactive/index.html PostgreSQL manual].