HP BL685c Sun Solaris 10 Deployment Guide for HP ProLiant Servers - Page 10
Architecture of an installation, General process flow, Primary installation components, GRUB
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Architecture of an installation This chapter describes the components, processes, and general architecture of a Solaris installation. To successfully construct more complex Solaris deployments, review the following information. General process flow A Solaris deployment consists of the following phases: • Boot-The first phase of deployment is booting a miniroot on the target system. The miniroot contains the Solaris installation software. The system can be booted from a variety of sources, including the Solaris media (CD or DVD), the network (PXE), a custom-built ISO image/CD, and hard drive. • Configuration-The second phase of deployment is configuring of the installation, which includes system identification (hostname, network parameters, root password, and so on), target root disk, and so on. This identification can be performed manually or automatically using JumpStart. • Software installation-The final phase of deployment is the actual loading of the Solaris operating environment software onto the system. The software packages can be loaded from the Solaris media, over the network through a Network File System (NFS), or in the form of a flash archive, which can be loaded from disk or other storage media or over the network. • Optional configuration-After installation, make ProLiant-specific configuration updates to the deployment. Primary installation components All Solaris installations follow the same flow as described previously, and are composed of the same primary components. Deployments differ primarily in the way these components are delivered. For example, in a CD-ROM-based interactive installation, the Administrator interactively supplies the system configuration, and the packages that contain the Solaris operating environment are loaded from the physical media. By contrast, for a fully automated installation, the system configuration can be obtained from a JumpStart server, and the packages can be loaded through a NFS. The following sections briefly describe the primary installation components, their roles, and delivery mechanisms. A key aspect of this architecture is that the delivery mechanisms for each component are generally independent of the others. This component independence provides a great amount of flexibility and allows for the creation deployment scenarios to fit most environments. Other sections discuss how various types of deployments can be constructed using these mechanisms. GRUB Grand Unified Bootloader (GRUB) is the default bootloader for Solaris starting with the Solaris 10 1/06 release. GRUB loads the Solaris multiboot program and the miniroot during installations or in failsafe mode. GRUB can also be used to pass boot options and parameters to Solaris. GRUB is loaded by the system BIOS or option ROMs (such as NICs and Fibre Channel adapters), and can be loaded from a wide variety of devices, including CDs, DVDs, diskettes, iLO virtual media, hard drives, USB storage, Storage Area Networks (SANs), and Preboot Execution Environment/Trivial File Transfer Protocol (PXE/TFTP). Architecture of an installation 10