Creating application servers

During the installation process, the product creates a default application server, named server1. Most installations require several application servers to handle the application serving needs of their production environment. You can use the command-line tool or the administrative console to create additional applications servers.

Before you begin

Determine if you want to use the application server that you are creating as part of a cluster. If this application server is going to be part of a cluster, you must use the Create a new cluster wizard instead of the Create a new application server wizard to create this application server.

About this task

[AIX HP-UX Linux Solaris Windows] [iSeries] To create a new application server, you can either use the createApplicationServer, createWebServer, or createGenericServer wsadmin command, or you can use the administrative console.

[z/OS] To create a new application server, you can either use the Profile Management tool, the createApplicationServer, createWebServer, or createGenericServer wsadmin command, or you can use the administrative console.

You can also create a new application server when you add a cluster member to a server cluster.

If you are migrating from a previous version of the product, then you can upgrade a portion of the nodes in a cell, while leaving others at the previous product level. This means that, for a period of time, you might be managing servers that are running at two different release levels in the same cell. However, when you create a new server definition, you must use a server configuration template, and that template must be created from a server instance that matches the version of the node on which you are creating a server.

There are no restrictions on what you can do with the servers running on the current release level.

Avoid trouble [z/OS] Avoid trouble: If you are using a global resource serialization (GRS) ring to attach one or more monoplexes to a sysplex environment, the cell name of any servers running in any of the monoplexes must be unique within the entire GRS environment. This requirement means that the cell name of a server running in any of the monoplexes:
  • Must be different than the cell name of any servers running in the sysplex
  • Must be different than the cell name of any servers running in another monoplex that is attached to the sysplex
If you have servers with duplicate cell names within the GRS environment, WebSphere Application Server cannot differentiate between the sysplex cell and the monoplex cell, and treats both servers as part of the same cell, This inaccurate cell association typically causes unpredictable processing results.gotcha

You can use the administrative console to perform the following steps to create a new application server:

Procedure

  1. In the administrative console, click either Servers > Application servers > New, or Servers > Clusters.

    The Servers > Application servers > New path starts the Create a new application server wizard. The Servers > Clusters > New path starts the Create a new cluster wizard. Only use this path if the application server is part of a cluster.

    The Servers > Clusters path brings you to the administrative console page where you can complete one of the following actions:
    • Click New if this application server is the first member of a new cluster, or
    • Click on the name of an existing cluster to make this application server a new member of that cluster.

    Both actions start the Create a new cluster wizard.

  2. Select a node for the application server.
  3. Enter a name for the application server. The name must be unique within the node.
  4. Click Next.
  5. Select a server template for the new server.

    You can use a default application server template for your new server or you can use the template that is optimized for development uses. The new application server inherits all of the configuration settings of the template server.

    [z/OS] If you select the defaultZOS template, which is the only one that is listed unless you used the createApplicationServerTemplate command for the AdminTask object to create additional templates, the first cluster member uses the default port assignments for the z/OS platform. If some of these ports are already defined for use elsewhere in your z/OS system, your newly created cluster member might not start, might function incorrectly, or might generate unexpected error messages. Therefore, you must resolve any port conflicts before you start this server.

  6. Click Next, and then select Generate unique HTTP ports if you want the wizard to generate unique ports for the application server.

    By default, this option is enabled. If you select this option, then you might need to update the alias list for the virtual host that you plan to use with this server to contain these new port values. If you deselect this option, then ensure that the default port values do not conflict with other servers on the same physical machine.

  7. [z/OS] Optional: Click Next and specify a short name for the server.

    The short name is also used as the JOBNAME for the server. If you do not specify a value for the short name field, the short name defaults to BBOSnnn, where nnn is the first free number in the cell that can be used to create a unique short name. For example, if default short names are already assigned to two other servers in the cell, the short name BBOS003 will be assigned to this server if you do not specify a short name when you create this server

    Important: Make sure that you set up a RACF SERVER class profile that includes this short name.
  8. [z/OS] Optional: Specify a generic short name for the server.

    The generic short name for the server becomes either the cluster transition name, if you are creating an unclustered server, or the cluster short name, if you are creating a clustered server. If you do not specify a value for the generic short name field, the generic short name defaults to BBOCnnn, where nnn is the first free number in the cell that can be used to create a unique generic short name. For example, if default generic short names are already assigned to three other servers in the cell, the generic short name BBOC004 is assigned to this server if you do not specify a generic short name when you create this server.

    Important: Make sure that you set up a RACF SERVER class profile that includes this generic short name.
  9. Click Next. Review the settings for the new server. If you want to change any of the settings, click Previous until you return to a page where you can change that setting. If you do not want to make any changes, click Finish.
  10. Click Review, select Synchronize changes with Nodes, and then click Save to save any configuration changes that you made.
  11. [z/OS] [Fix Pack 19 or later] Optional: Run the updateZOSStartArgs script to enable an application server to use the z/OS reusable ASID function, if it is not already enabled for the node that is associated with this application server.

    This function enables an application server to reuse all ASIDs, including those that are associated with cross-process services.

    Avoid trouble Avoid trouble: Before running this script, verify that you are running on z/OS Version 1.9 or higher, and that the reuse ASID function is enabled during the z/OS startup process. If the function is not enabled on z/OS, running this script has no affect on how ASIDs are handled.gotcha

Results

The new application server is displayed in the list of servers on the administrative console Application servers page.

What to do next

This newly created application server is configured with default settings that are not displayed when you run the Create New Application Server wizard.

[z/OS] For example, if you are going to be running a high volume Java application on this application server, you might want to select the Run in 64 bit JVM mode field. Selecting this field lets you dedicate more central storage to the application server than you can if you use the default 31-bit mode setting.

You can:




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Last updatedLast updated: Aug 31, 2013 2:56:59 AM CDT
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