This topic describes how to launch a greenfield bare metal server.
- In the Contrail Web UI, select Workloads > Instances > Create Instance.
- From the Server Type Field, select New
Bare Metal Server.
- Select the boot source, BMS image, and the BMS flavor
available for the server type selected.
- Click Create.
Following BMS launch, the BMS PXE boots from the ironic-provision
network. The ironic-provision network is not visible to the tenant.
BMS then connects to the provisioning network, connects to the TSN
node, and gets a temporary IP address from the subnet of the provisioning
network. This temporary IP address is not visible to the tenant. BMS
downloads the boot image from the TFTP server and saves it locally
for subsequent local boots. After the BMS is ready, it reboots. This
time, the BMS boots from local image. During the second reboot, the
BMS is disconnected from the ironic-provision network and is connected
to the tenant network. This process of transferring from the ironic-provisioning
network to the tenant network is called Network Flip. Then, the TSN node provides the BMS an IP address from the tenant
network. Once the BMS boots and is ready for use, it is connected
to tenant network.
The tenant can delete a BMS when it is not needed in the network.
When a BMS is disconnected from the tenant network, it is connected
to the cleaning-network or the ironic-provisioning network. This network
flip is done to prevent snooping of hackers when the BMS is being
cleaned up. The ironic-provisioning network cleans up the server moves
it back to the pool of available servers, to be ready for redeployment
as a new BMS.
