Modify variables using scripting

Use scripting and wsadmin to modify variables in the application server.

Complete the following steps to modify an appserver variable:

 

1. Launch the wsadmin scripting tool using the Jython scripting language.

2. There are two ways to perform this task. Choose one of the following:

   • Use the AdminTask object:
     • Jacl...

       $AdminTask setVariable {-interactive}

     • Jython...

       AdminTask.setVariable (['-interactive'])

   • Use the AdminConfig object.

     The following examples modify the DB2_JDBC_DRIVER_PATH variable on the node level:

     • Jacl...

       set varName DB2_JDBC_DRIVER_PATH 
       set newVarValue C:/SQLLIB/java
       set node [$AdminConfig getid /Node:myNode/]
       set varSubstitutions [$AdminConfig list VariableSubstitutionEntry $node]
       
       foreach varSubst $varSubstitutions {
          set getVarName [$AdminConfig showAttribute $varSubst symbolicName]
          if {[string compare $getVarName $varName] == 0} {
             $AdminConfig modify $varSubst [list [list value $newVarValue]]
             break
          } 
       }
       

     • Jython...

        varName = "DB2_JDBC_DRIVER_PATH" newVarValue = "C:/SQLLIB/java"
        node = AdminConfig.getid("/Node:myNode/")
       
        varSubstitutions = AdminConfig.list("VariableSubstitutionEntry",node).split(java.lang.System.getProperty("line.separator"))
       
        for varSubst in varSubstitutions:
       
          getVarName = AdminConfig.showAttribute(varSubst, "symbolicName")
       
          if getVarName == varName:
             AdminConfig.modify(varSubst,[["value", newVarValue]])
             break
       

3. Save the configuration changes...

   AdminConfig.save()
   

4. In a network deployment environment only, synchronize the node. Use the syncActiveNode or syncNode scripts in the AdminNodeManagement script library to propagate the configuration changes to node or nodes.

   • Use the syncActiveNodes script to propagate the changes to each node in the cell...

     AdminNodeManagement.syncActiveNodes()

   • Use the syncNode script to propagate the changes to a specific node, as the following example demonstrates:

     AdminNodeManagement.syncNode("myNode")

 

Related tasks

Use the AdminConfig object for scripted administration

 

Related

Server settings configuration scripts
Commands for the AdminConfig object