Ripple start: Starts and stops servers in a cluster one at a time without any outage to the applciation.
Rollout Update: ?
Hot Deployment: ?

Hi rafarocks

Ripple start:
pic.dhe.ibm.com/infocenter/wasinfo/v8r0/...

Ripplestart combines stopping and starting operations. It first stops and then restarts each member of the cluster. For example, your cluster contains 3 cluster members named server_1, server_2 and server_3. When you click Ripplestart, server_1 stops and restarts, then server_2 stops and restarts, and finally server_3 stops and restarts. Use the Ripplestart option instead of manually stopping and then starting all of the application servers in the cluster.


Rollout Update
pic.dhe.ibm.com/infocenter/wasinfo/v8r0/...

Sequentially updates an application installed on multiple cluster members across a cluster. After you update an application's files or configuration, click Rollout Update to install the application's updated files or configuration on all cluster members of a cluster on which the application is installed. Rollout Update does the following for each cluster member in sequence:

    1.-Saves the updated application configuration.
    2.-Stops all of the cluster members on one node.
    3.-Updates the application on the node by synchronizing the configuration.
    4.-Restarts the stopped cluster members.
    5.-Repeats steps 2 through 4 for all of the nodes that have cluster members.


Hot deployment and dynamic reloading
pic.dhe.ibm.com/infocenter/wasinfo/v8r0/...

You can make various changes to applications and their modules without having to stop the server and start it again. Making these types of changes is known as hot deployment and dynamic reloading.

Important: Do not use hot deployment to update components in a production deployment manager managed cell. Hot deployment is well-suited for development and testing, but poses unacceptable risks to production environments

Hope this help.

Regards

Thanks Gabriel....much appreciated.

Hi,

Kindly keep in mind, Ripplestart is only to stop/start the services randamly within cluster group. when you want to apply this during your Application deployment, kindly make sure that, the Pre-condtions, if Instance Hung/ not responed the ripple start will skip and go for next Instance, so keep the addtional Monitor inplace.

Hello.  My company uses the Rollout Update option when upgrading our applications.  I've been looking to automate our deployments and have gotten everything else done but have been unable to identify Jython commands to rollout an update instead of simply saving it via AdminConfig.save().  Any assistance would be greatly appreciated!