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Any action that requires a service restart for configuration changes to take effect are not recommended and can result in upgrade issues.
Do not add, modify, or delete an NS group.
Do not add, modify, or delete manually created NS records.
Do not add, modify, or delete a zone.
Do not assign or unassign an NS group to a zone.
Do not change the NS group assigned to a zone.
Do not change the host name of the Grid members that are assigned to a zone if the members have not been upgraded, have been reverted, or are in the revert time window.
Do not restart DNS and DHCP services or schedule a restart for these services on Grid members that have not been upgraded. For more information about Restarting Groups, see Restarting Services.
Do not add, delete, or modify a DHCP range, a filter, or a fixed address.
Do not modify the settings for automated mitigation of phantom domain attacks using the CLI commands on a Grid member until the member has completed the upgrade.
Infoblox does not recommend having different versions of the Network Insight consolidator and probe during a software Grid upgrade. This may lead to the “Discovery Consolidator service failure issue” error. Infoblox recommends that you always upgrade the consolidator and probe simultaneously during the software Grid upgrade process.
The Grid Master and Upgrade Groups can be scheduled to upgrade at different times in order to limit service impact. However, upgrades needs to be performed within a limited window of time (i.e. within a couple of days). If an upgrade spans nine or more days, a warning is displayed in the NIOS UI.
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