6.2

Table Of Contents
8 From the Node tab, decrease the cluster size value.
Application Services selects the nodes that were last created.
For example, if a cluster includes appserver_0, appserver_1, appserver_2, and appserver_3 nodes
and you decrease the cluster size to two nodes, the appserver_2 and appserver_3 nodes are
selected for removal.
9 (Optional) Click the Choose Nodes to remove button to list all of the nodes in the cluster and
manually select the nodes for removal.
10 (Optional) From the Service or Application Component tab, create an update script for all of the
available dependent components with a property bound to the clustered node.
If the UPDATE and TEARDOWN life cycle stage are defined, then the scripts appear with the
associated service or application component.
For example, if a load balancer node has the all(node_array:ip) property bound to a clustered node,
then it must run an update script.
11 (Optional) Select the Reboot check box if the agent must restart the virtual machine after the update
script runs successfully and click Next.
The scaled in clustered node and the update tasks of the dependent components appear in the
execution plan. The original execution plan does not appear during an update process.
12 (Optional) Add an APPD_UPDATE_PROPS property in the update script to view a list of all the
changed properties.
The update script is saved in the update profile and can be used for multiple updates. You cannot use
APPD_UPDATE_PROPS as a property name or as a qualifier for a property name.
For example, the sample MySQL service update script includes the APPD_UPDATE_PROPS
property to update the database port and password.
13 (Optional) Add an APPD_PREV property in the update script to view the previous value of a property.
The update script is saved in the update profile and can be used for multiple updates. You cannot use
APPD_PREV as a property name or as a qualifier for a property name.
For example, the sample MySQL service update script includes the APPD_PREV property to view the
value of the database password.
14
(Optional) Click the Expand Cluster button ( ) to expand the clustered node, select a custom task,
and drag the task to each node.
You can configure the task properties in the Add Custom Task dialog box and save your changes.
15 Review the scaled in clustered node and update script in the execution plan and click Next.
The blue dotted lines in the execution plan define a specific order in which the deployment tasks run.
Click the down arrow next to the service update script to view script details or the variable definitions
used in the script.
Using Application Services
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