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This page provides information on system services and scripts based on the default DPU OS (i.e., Ubuntu).

First Boot After BFB Installation

During the first boot, the cloud-init service configures the system based on the data provided in the following files:

  • /var/lib/cloud/seed/nocloud-net/network-config – network interface configuration

  • /var/lib/cloud/seed/nocloud-net/user-data – default users and commands to run on the first boot

RDMA and ConnectX Driver Initialization

RDMA and NVIDIA® ConnectX® drivers are loaded upon boot by the openibd.service

The mlx5_core kernel module is loaded automatically by the kernel as a registered device driver.

One of the kernel modules loaded by the openibd.service, ib_umad, triggers modprobe rule from /etc/modprobe.d/mlnx-bf.conf file that runs the /sbin/mlnx_bf_configure script. See Default Ports and OVS Configuration for more information.

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