Grouping nodes in a flexible management environment using scripting


Define groups of nodes to simplify large environment configurations. Node groups allow us to submit jobs to multiple nodes.

Create a job manager and register one or more nodes in a flexible management environment. Verify that the job manager process is running.

We can coordinate management actions among multiple deployment managers, asynchronously administer multiple unfederated appservers, and submit jobs to start servers from a management profile that contains a job manager. In order to begin using the job manager to run jobs, register the appserver and dmgr nodes as managed nodes of the job manager.

Node groups can be used to improve the system administration, including easy management of branch office systems and server farms. For example, a business has 1000 global store locations, and each location has three application servers. Each store location is connected to the business headquarters data center. The business manages all systems and runs jobs from the business headquarters. In this scenario, the business can manage the branch offices by creating one node group per continent.

 

  1. Launch wsadmin. Navigate to the APP_ROOT/bin directory and run the following command to launch wsadmin and connect to the job manager process:

    wsadmin -profileName myJobManager -lang jython

  2. Create a node group. Use the createManagedNodeGroup command to create a new node group in the flexible management configuration:

    AdminTask.createManagedNodeGroup('-groupName European_Branch_Offices -description "Management group for all European branch offices"')

  3. Add nodes to the node group. Use the addMemberToManagedNodeGroup command to add nodes to the new group. Each node can belong to one or more groups.

    The following example commands add the Hursley_office, Berlin_office, Warsaw_office, and Paris_office nodes to the European_Branch_Offices node group:

    AdminTask.addMemberToManagedNodeGroup('-groupName European_Branch_Offices -managedNodeNameList "[Hursley_Node01][Berlin_Node01][Warsaw_Node01][Paris_Node01]"')

  4. Verify that the system added the nodes to the node group. Use the getManagedNodeGroupMembers command to display the nodes for the node group of interest, as the following example displays:

    AdminTask.getManagedNodeGroupMemebers('-groupName European_Branch_Offices')
    The command returns a list of node names that are registered with the node group of interest, as the following sample output displays:

    "[Hursley_Node01][Berlin_Node01][Warsaw_Node01][Paris_Node01]"

 

Results

A node group with node group members exists in the flexible management configuration.

 

What to do next

Use the job manager to submit, monitor, and manage jobs for the node groups.


Job manager

 

Related tasks


Create a management profile with a job manager

 

Related


ManagedNodeGroup
JobManagerNode
ManagedNodeAgent