Upgrade the firmware on your ExtraHop appliance
The following procedure shows you how to upgrade your ExtraHop appliance to the latest firmware release. While the firmware upgrade process is similar across all ExtraHop appliances, some appliances have additional considerations or steps that you must address before you install the firmware in your environment. If you need assistance with your upgrade, contact ExtraHop Support.
Pre-upgrade checklist
Here are some important considerations and requirements about upgrading ExtraHop appliances.
- If you have multiple types of ExtraHop appliances, you must upgrade them in
the following order:
- Command appliance
- Discover appliances
- Explore appliances
- Trace appliances
- If you have a Command appliance, apply the following guidance:
- For large Command appliance deployments (managing 50,000 devices or more), reserve a minimum of one hour to perform the upgrade.
- The Command appliance firmware version must be greater than or equal to the firmware version of all connected appliances.
- If you have Explore appliances, apply the following guidance:
- You must halt the ingest of records from Command and Discover
appliances before upgrading. If you are upgrading from a firmware
version prior to 7.4, temporarily remove any
connected Explore appliances, or alternatively, disable triggers that commit records and disable the
automatic flow records setting.
If you are upgrading from firmware version 7.4 or later, disable record ingest on the Explore cluster.
You must re-enable these settings after all nodes in the Explore cluster are upgraded.
- You must upgrade all Explore nodes in an Explore cluster. The
cluster will not function correctly if nodes are on dissimilar
firmware versions.
Important: The message Could not determine ingest status on some nodes and Error appear on the Cluster Data Management page in the Admin UI of the upgraded nodes until all nodes in the cluster are upgraded. These errors are expected and can be ignored.
- You must halt the ingest of records from Command and Discover
appliances before upgrading. If you are upgrading from a firmware
version prior to 7.4, temporarily remove any
connected Explore appliances, or alternatively, disable triggers that commit records and disable the
automatic flow records setting.
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