Tungsten Fabric deployment prerequisites¶

Before you proceed with the actual Tungsten Fabric (TF) deployment, verify that your deployment meets the following prerequisites:

1. Your MOS OpenStack cluster is deployed as described in Deploy OpenStack with the compute-tf preset enabled.

2. Your MOS OpenStack cluster uses the correct value of features:neutron:tunnel_interface in the openstackdeployment object. The TF Operator will consume this value through the shared secret and use it as a network interface from the underlay network to create encapsulated tunnels with the tenant networks.

   Warning

   TF uses features:neutron:tunnel_interface to create the vhost0 virtual interface and transfers the IP configuration from the tunnel_interface to the virtual one. Therefore, plan this interface as a dedicated physical interface for TF overlay networks.

3. The Kubernetes nodes are labeled according to the TF node roles:

   Tungsten Fabric (TF) node roles¶

   Node role	Description	Kubernetes labels	Minimal count
   TF control plane	Hosts the TF control plane services such as database, messaging, api, svc, config.	tfconfig=enabled tfcontrol=enabled tfwebui=enabled tfconfigdb=enabled	3
   TF analytics	Hosts the TF analytics services.	tfanalytics=enabled tfanalyticsdb=enabled	3
   TF vRouter	Hosts the TF vRouter module and vRouter agent.	tfvrouter=enabled	Varies
   TF vRouter DPDK Technical Preview	Hosts the TF vRouter agent in DPDK mode.	tfvrouter-dpdk=enabled	Varies

   Note

   TF supports only Kubernetes OpenStack workloads. Therefore, you should label OpenStack compute nodes with the tfvrouter=enabled label.

   Note

   Do not specify the openstack-gateway=enabled and openvswitch=enabled labels for the MOS deployments with TF as a networking back end for OpenStack.