The following procedure can be used to update/customize xCAT netboot images on the head node (xCAT master). Also, NIC drivers for the baremetal servers can be updated inside the netboot image.
2. Create a slice with a baremetal node to boot up baremetal worker. Login to the worker node, download Mellanox Network Interface Card drivers and build RPMs.
4. It is possible that the interfaces need to be renamed due to an update in kernel or a network interface card is changed. In this case, some modifications need to be done in netboot image files and an xCAT postscript.
An xCAT postinstall script (fix_ifaces.sh) is used on some racks to adapt the interface configuration due to runtime factors.