Page Comparison

...

Step 1: Setting up a MySQL database

...

1. Download and install MySQL on your computer using the following command:

   Info
   For instructions on installing MySQL on MAC OS, go to Homebrew.

   sudo apt-get install mysql-server mysql-client

2. Start the MySQL service using the following command:
   

   sudo /etc/init.d/mysql start

3. Log in to the MySQL client as the root user (or any other user with database creation privileges).
   

   mysql -u root -p

4. Enter the password when prompted.

   Info
   In most systems, there is no default root password. Press the Enter key without typing anything if you have not changed the default root password.

5. In the MySQL command prompt, create the database using the following command:
   

   create database WSO2wso2_MBmb;

   Info

   For users of Microsoft Windows, when creating the database in MySQL, it is important to specify the character set as latin1. Failure to do this may result in an error (error code: 1709) when starting your cluster. This error occurs in certain versions of MySQL (5.6.x), and is related to the UTF-8 encoding. MySQL originally used the latin1 character set by default, which stored characters in a 2-byte sequence. However, in recent versions, MySQL defaults to UTF-8 to be friendlier to international users. Hence, you must use latin1 as the character set as indicated below in the database creation commands to avoid this problem. Note that this may result in issues with non-latin characters (like Hebrew, Japanese, etc.). The database creation command should be as follows: mysql> create database <DATABASE_NAME> character set latin1; For users of other operating systems, the standard database creation commands will suffice. For these operating systems, the database creation command should be as follows:. mysql> create database <DATABASE_NAME>;

6. Give authorization of the database to the regadmin user as follows:
   

   GRANT ALL ON WSO2wso2_MBmb.* TO regadmin@localhost IDENTIFIED BY "regadmin";

7. Once you have finalized the permissions, reload all the privileges by executing the following command: 
   

   FLUSH PRIVILEGES;

8. Log out from the MySQL prompt by executing the following command:
   

   quit;

...

1. Open the <MB_HOME>/repository/conf/datasources/master-datasources.xml file. This is where datasources are configured to point to the databases used by the Message Broker. This file consists of commented out configurations for datasources. The datasource configuration for MySQL is among these. The changes made to this file must be done in both broker nodes.

2. Uncomment or add the following configuration into the master-datasources.xml file. Update the JDBC URL to correctly point to your database and enter the username and password for the MySQL database user with the proper permissions.
   

   Code Block
   language xml
   <datasource> <name>WSO2_MB_STORE_DB</name> <jndiConfig> <name>WSO2MBStoreDB</name> </jndiConfig> <definition type="RDBMS"> <configuration> <driverClassName>com.mysql.jdbc.Driver</driverClassName> <url>jdbc:mysql://localhost:3306/wso2_mb</url> <username>root</username> <password>root</password> <maxActive>50</maxActive> <maxWait>60000</maxWait> <minIdle>5</minIdle> <testOnBorrow>true</testOnBorrow> <validationQuery>SELECT 1</validationQuery> <validationInterval>30000</validationInterval> <defaultAutoCommit>false</defaultAutoCommit> </configuration> </definition> </datasource>

   The elements in the above configuration are described below:

   Element	Description
   url	The URL of the database. The default port for a DB2 instance is 50000.
   username and password	The name and password of the database user
   driverClassName	The class name of the database driver
   maxActive	The maximum number of active connections that can be allocated  at the same time from this pool. Enter any negative value to denote an unlimited number of active connections.
   maxWait	The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception. You can enter zero or a negative value to wait indefinitely.
   minIdle	The minimum number of active connections that can remain idle in the pool without extra ones being created, or enter zero to create none.
   testOnBorrow	The indication of whether objects will be validated before being borrowed from the pool. If the object fails to validate, it will be dropped from the pool, and another attempt will be made to borrow another.
   validationQuery	The SQL query that will be used to validate connections from this pool before returning them to the caller.
   validationInterval	The indication to avoid excess validation, and only run validation at the most, at this frequency (time in milliseconds). If a connection is due for validation, but has been validated previously within this interval, it will not be validated again.
   defaultAutoCommit	Specifies whether each SQL statement should be automatically committed when it is completed. By default, this element is set to false.

   Info
   For more information on other parameters that can be defined in the  <MB_HOME>/repository/conf/datasources/ master-datasources.xml file, see Tomcat JDBC Connection Pool.

3. Open the <MB_HOME>/repository/conf/broker.xml file. This is the root configuration file of WSO2 MB. The changes made to this file must be done in all the MB nodes.

4. In the broker.xml file we need to use the MySQL message store and Andes context store. To do this, uncomment or add the following configuration.
   

   Code Block
   language xml
   ... <persistence> <messageStore class="org.wso2.andes.store.rdbms.RDBMSMessageStoreImpl"> <property name="dataSource">jdbc/MySQLMessageStore</property> </messageStore> <andesContextStore class="org.wso2.andes.store.rdbms.RDBMSAndesContextStoreImpl"> <property name="dataSource">jdbc/MySQLMessageStore</property> </andesContextStore> ... </persistence>

   The elements in the above configuration are described below.

   • The fully qualified name of the respective implementation class should be defined under the class attributes of messageStore and andesContextStore elements. This implementation class will be used by MB to persist relevant information.

   • The <property> elements are used to define different properties for each store. The minimal property for starting each store is the dataSource property. Depending on the implementation, the required properties may differ.

...