This is the chapter of the MemberManual that describes how to use PostgreSQL and MySQL databases on HCoop servers.
MySQL
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.
Creating and Deleting Databases
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 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. Your password will be required. Please safeguard it. 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
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.
Creating and Deleting Databases
Additionally, dbtool is used to create new MySQL 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 with the following command: dbtool postgres dropdb DATABASE. For security reasons, you cannot drop a database using the psql shell.
Accessing Databases
For web applications, set the PostgreSQL host/server to postgres. Default ports apply. A password is not required. 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 loot at the [http://www.postgresql.org/docs/8.1/interactive/index.html PostgreSQL manual].