This topic applies only on the z/OS operating system.

Setting up a highly available sysplex environment

Setting up a highly available sysplex environment enables you to control application rollout and workload routing.

Before you begin

About this task

Complete the following actions if you want to set up a highly available sysplex environment.

Procedure

  1. Configure a node on each LPAR that is configured in the Network Deployment cell. The deployment manager Server, which is required, must be configured on its own node. It can be configured on either LPAR or on a separate LPAR.
  2. Use the Administrative Console to make sure a location service daemon has been defined on each LPAR that has one or more nodes in the same cell. Modifying z/OS location service daemon settings describes how to define a location service daemon if one is not already defined.
  3. Define an application server on each node, and form all of the application servers into a cluster.

    SeeCreating clusters for more information on how to add application servers into a cluster.

  4. Define the following dynamic virtual IP addresses (DVIPAs) through the z/OS Operating System's Sysplex Distributor.
    • A dynamic virtual IP address as the daemon's IP name for the cell. This IP address enables WLM-balanced workload routing and fail over between the LPARs for IIOP requests.
    • A dynamic virtual IP address as the HTTP transport name for the cell. This IP address enables WLM-balanced routing and fail over between the LPARs for sessionless HTTP requests.

    See the z/OS Communications Server IP Configuration Guide for your version of the z/OS operating system for a description of how to define IP addresses through the z/OS Sysplex Distributor. This publication is available at http://www.ibm.com/servers/eserver/zseries/zos/bkserv/v1r4books.html.

  5. Define a static IP address for each node as an auxiliary HTTP transport name for the cell. This IP address enables directed HTTP routing for sessional HTTP requests.
  6. Configure Web server plug-ins in each of the Web servers. Configure the plug-ins to use the HTTP DVIPA for sessionless requests and the static IP addresses for sessional requests. See Communicating with Web servers for more information.



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Last updated: Aug 29, 2010 8:25:23 PM CDT
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