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• Grid Master: After you configure the Grid Master, it automatically becomes the only member of this group. You cannot modify or delete this group.

• Reporting Member: After you configure a reporting member in a Grid, it automatically becomes the only member of this group. This group will be upgraded automatically after the Grid Master and before other upgrade groups. You cannot modify, delete, or schedule this upgrade group. For information about reporting, seeInfoblox Reporting and Analytics.Reporting Member (when you have configured reporting clustering Grid): When you upgrade from NIOS 9.0.x to a later release, the Grid will be upgraded to the single indexer mode. You can change the configuration after the upgrade. During an upgrade, the reporting members of the primary site are moved into separate groups to ensure that there are always some peers available to receive events sent by the forwarders. To achieve this, the replication factor must be equal to the search factor and the total number of reporting appliances.

  During an upgrade, data loss might happen if the peers that hold all searchable copies of a bucket are in the same group and they are all offline at the same time. To avoid this, ensure that you group the members in separate groups.

• Default: This is the default upgrade group to which the appliance automatically assigns Grid members. If you do not explicitly assign a member to an upgrade group, it remains in the Default group. You cannot delete or rename this group.

  Make sure that the default group has at least one member associated with it, otherwise the appliance displays that the upgrade process is still in progress even though it is complete. To avoid this, you can either use the Infoblox > set grid_upgrade forced_end command to stop the upgrade process or keep at least one member in the default group.

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