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Managing nodes automatically in a System Management Application cluster

You can now enable Auto Node Discovery instead of using the System Management Application (SMA) to manually manage nodes in a cluster. Auto Node Discovery configures the IP addresses of the nodes in a cluster, automatically adds new nodes, and updates the cluster node list. This process works for both Pega Cloud and on-premises deployments to facilitate cluster node management and tracking.

These instructions are for enabling Auto Node Discovery on an Apache Tomcat server. For other application servers, contact your system administrator for configuring JVM arguments.

Enter the following JVM arguments to enable Auto Node Discovery before starting JVM:

  1. Modify the setenv.bat file, which is in the <TOMCAT_HOME>/bin directory, by setting the following JVM argument to true:

-DSMAAutoNodeDiscovery=true

  1. If necessary, you can override the default values for port number, JMX port, user name, and password:

SMAAutoNodeDiscoveryPort=<PRPCport>

SMAAutoNodeDiscoveryJMXPort=<JMXPort>

SMAAutoNodeDiscoveryUserID=<userid>

SMAAutoNodeDiscoveryPassword=<password>

where

<PRPCPort> is the port number where Pega 7 Platform is running. The default port is 8080.

<JMXport> is the JMX port. The default port is 9004.

<userid> is the user ID for JMX authentication.

<password> is the password for JMX authentication.

An example configuration:

-DSMAAutoNodeDiscoveryPort=xxxx -DSMAAutoNodeDiscoveryJMXPort=xxxx -DSMAAutoNodeDiscoveryUserID=xxxx

-DSMAAutoNodeDiscoveryPassword=xxxx

  1. To verify that Auto Node Discovery is enabled, open <host>:<port>/prsysmgmt in the SMA browser.
After you configure these settings, the SMA no longer includes the option to add or delete a node. However, if Auto Node Discovery fails, an error message is displayed, and you must manually manage the nodes in the SMA.
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