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SA OS provisioning components

SA Provisioning is an optional feature that can must be installed for each SA Core where operating system provisioning is to be performed. For information about installing the required OS Provisioning components, see the SA 10.51 Install Guide.

SA OS Sequence Provisioning uses the following components and features.

OS Build Agent

Used with OS Sequences, the Build Agent is Similar to the SA Agent, the OS Build Agent is a simplified agent whose function is to run commands as instructed by the Build Manager. Newly registered servers with installed OS Build Agents appear in the SA Client Unprovisioned Server list.

Booting a new server with an SA-supplied image for the first time loads an OS Build Agent on the server; however, the server does not have the target operating system installed and might not have access to disk resources. SA can still communicate with the server and perform commands on it remotely because the OS Build Agent is running a limited operating system that is loaded into memory.

The OS Build Agent performs the following functions:

  • Registers the server with SA when the OS Build Agent starts.
  • Listens for command requests from SA and performs them.
  • Performs commands even though a target operating system is not installed.

Build Manager

The build manager performs several functions:

  • Manages newly registered OS Build Agents.
  • Coordinates scripts that gather hardware inventory from OS Build Agents.
  • Coordinates the scripts that perform the operating system installation with the OS Build Agent.
  • Communicates with the OS Build Agents using a simple protocol.

Media Server

The Media Server is installed as part of a typical SA Core installation when you specify that you want to install the OS Provisioning components. In order to provision operating systems, you must first upload a valid copy of the operating system’s installation media to the Media Server. During OS Provisioning, SA will use the copy of the operating system installation media on the Media Server to do the provisioning.

SA provides file servers that can share operating system media using NFS and Samba if you do not have existing NFS/Samba servers that you want to use or are not familiar with configuring these servers.

Boot Server

The Boot Server listens for broadcast requests from new servers in the server pool and responds using DHCP. Network booting requires DHCP/BOOTP, TFTP, and PXE (x86).