Associating an S-TAP group with a managed units group for enterprise load balancing

Learn how to use enterprise load balancing by creating and associating S-TAP groups with managed unit groups. If a managed group unit becomes unavailable, the S-TAPs sending data to that managed unit group are reassigned to the managed unit in the associated group with the lowest load. Optionally, define failover groups. You can specify multiple failover groups, with priorities, for disaster recovery.

About this task

When you specify multiple failover groups, each one has a priority. When the load balancer searches for an available managed unit in a failover group, it starts with the group, or groups, whose priority is 1.

Procedure

  1. On a central manager, go to Manage > Central Management > Enterprise Load Balancer > Associate S-TAPs and Managed Units.
  2. If you need to create an S-TAP group:
    1. Click Create S-TAP Group to open the Create New S-TAP Group dialog.
    2. Type a name in the Group Name field.
      For example, North_American_S-TAPs.
      Recommendation: To ensure compatibility with other Guardium components, do not use spaces or special characters in group names.
    3. Add group members by selecting from existing host names, or add new members using the Group Member field. S-TAPs indicated with a checked checkbox are included with the new S-TAP group.
    4. Click Create New Group to create the S-TAP group.
  3. Associate the S-TAP group with a managed units group.
    1. Select the S-TAP group that you want to associate.
      For example, North_American_S-TAPS.
    2. Click Associate Managed Units to open the Associate Managed Unit Group dialog.
    3. If necessary, create a new group of managed units.
      1. Go to Manage > Central Management > Managed Unit Groups.
      2. Click Create managed unit Group to open the Create New Managed Unit Group dialog.
      3. Type a name in the Group Name field. For example, North_American_MUs.
        Recommendation: To ensure compatibility with other Guardium components, do not use spaces or special characters in group names.
      4. Add group members by selecting from existing Managed Unit IP addresses.
      5. Click Create New Group to create the new group of managed units. The Managed Unit Groups page refreshes, showing the new group.
    4. Select one or more managed units groups to associate with the S-TAP group.
      For example, North_American_MUs.
    5. Click Apply.
    6. Click Save to complete the association between an S-TAP group and a managed units group.
  4. Optional: Associate the S-TAP group with a managed unit group for failover.
    1. Select the S-TAP group. For example, North_American_S-TAPs.
    2. Click Associate Failover Groups to open the Associate Failover Group dialog. All groups appear in both the associated group and failover group lists. After a group is designated as either an associated group or a failover group, it no longer appears in the other group list.
    3. If necessary, create a new group of managed units (described in step 3.c).
    4. Select one or more target managed unit failover groups. For example, North_American_MUs_failover.
    5. Modify the failover priorities of the groups, as relevant.
      • The priority list must be sequential starting with 1.
      • Multiple groups can have the same priority.
      • The priorities cannot skip a level. For example, 1,1,2,3 is valid. However, 1,2,4,5 is invalid.
    6. Click Apply.
    7. Click Save to complete the association between an S-TAP group and a failover managed units group.