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Manual Chapter: BIG-IQ High Availability
Manual Chapter
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About a high availability active-active cluster

You can ensure that you always have access to managed BIG-IP devices by installing two or more BIG-IQ systems in an active-active, high availability (HA) cluster. Any configuration change that occurs on one BIG-IQ system is immediately synchronized with its peer devices. If a BIG-IQ system in an active-active HA cluster fails, a peer BIG-IQ system takes over the device management that was previously done by the original device.

Configuring BIG-IQ Cloud in an active-active high availability configuration

You must install and license at least two BIG-IQ systems before you can configure them in an active-active high availability cluster.

Configuring BIG-IQ Cloud in a high availability cluster means you always have management access to the BIG-IP devices in your network. (Configuring a high availability cluster is optional.)

Important: To synchronize properly, BIG-IQ systems in a cluster must be running the same version of software. The exact configuration in terms of hardware is not required; however, the systems should have comparable resources. This is required because, in the event of a fail over, a peer must be able to maintain the process requirements. This is especially important in terms of disk space and data collection.
  1. Hover on the BIG-IQ HA header and click the + icon when it appears.
  2. In the Peer IP Address field, type the self IP address (on the internal VLAN) of the peer system. Do not use the management IP address of the peer system.
  3. Click the Add button to add this device to this high availability cluster.
  4. In the User Name and Password fields, type the administrative user name and password for the system.

If discovery fails, a Delete button displays. Verify the correct self IP address and credentials. Then click the Delete button to remove the incorrect information, and re-type the self IP address, user name, and password.

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