HYCU is able to fully function in a multi-network environment by having two network adapters assigned to different vlans.
This can be particularly useful when you have a dedicated storage used for backups, which resides on a network different then HYCU. For example:
- HYCU could be located on 10.0.0.0/16 vlan
- Storage machine could be located on 192.168.0.0/24 vlan
Note that HYCU cannot move the entire backup transfer to the second NIC since there is always part of the transfer being done over management network. Reason for this lies in the fact that HYCU uses Nutanix data services IP address to ingest data through ABS. Due to Nutanix limitation (Nutanix best practices document version 2.1 - AHV Block Services), this address must be in the same subnet as the eth0 (management) network of the CVMs.
Follow these steps to setup and configure HYCU controller with multiple vlans:
1. Perform clean installation of HYCU as described in HYCU deployment, and finish it's initial setup. After successful deployment, go to Nutanix Prism and edit HYCU VM settings. Add second NIC adapter and select required vlan.
2. Depending how vlan is setup, network configuration can be done in two ways:
a. If vlan has enabled IP address management you can assign the IP address directly from Nutanix Prism.
b. If vlan on which new NIC will be added does not have enabled IP address management, then you can configure network manually by connecting to the HYCU VM using SSH (or launching the console from Prism) and triggering command “sudo nmtui”.
3. Once new network adapter is properly configured your HYCU is ready for adding a target located on another vlan.
Note: If second vlan has enabled IP address management (you configured second vlan using option 2a.) no actions will be needed after upgrade. However, if you manually configured the network on the second vlan (2b.), upgrade process will not preserve the network settings and you will need to reconfigure the vlan after upgrade.