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Wednesday, June 13, 2012

How to Upgrade WSO2 ESB?

Following steps describes how to update(migrate) WSO2 products to newer versions

Step 1 - Deploying existing artifacts

Copy the deployed artifacts to WSO2 ESB old version to WSO2 ESB new version by copying wso2esb-4.0.0/repository/deployment/server folder to wso2esb-4.0.3/repository/deployment/server Also Copy all the content of repository/component/lib {wso2esb-4.0.0} to the new installation {wso2esb-4.0.3} (this will help you install the existing drivers and additional plug-ins used in your earlier installation)

Step 2 - Apply Patches

Most of the patches are applied when we release newer versions however, some patches can be not applied such as a custom patches or patches which were given after the release. Therefore you need to check the needed patches and apply them
Step 3 - Allocate proper memory numbers (if applicable).
If you have allocated memory numbers don't forget to allocate them to the new installation as well.

Step 3 - Change the configuration files

Apply the same changes you have done to configurations files inside OldVersion/repository/conf to NewVersion/repository/conf (if you have done any such to any configuration files)

  1. If you have done registry mounting make sure you apply to the new installation as done before by changing relevant configuration files such as carbon.xml,axis2.xml,user-mgt.xml,mgt-transports.xml
  2. If you have created external data sources (Carbon data sources) make sure you copy file from repository/conf to the newer version repository conf
Step 4 - Apply security.

Apply the security measures taken as before. such as Encrypting passwords {as done previously}, Changing key stores etc

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