"Automated Operations" from # Manual to # Remote to # Install virtual machines in bulk

0x01 "Manual Install virtual machine "

There are four types of virtual machines installed :

1, Local Install media (using ISO or CDROM installation) --do not explain too much

2. Network Install (use http,ftp,or NFS for server ISO installation)- -do not explain too much

3. Import existing disk image (directly installed with existing image)- -do not explain too much

4. Network boot (PXE installation)

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PXE (Preboot Execute environment, pre-boot execution Environment)

PXE boot principle

When the computer boots, the BIOS directs the PXE client into memory and then the files that are placed on the remote side by the PXE client are downloaded to the local run by the network

Details for the Niang: http://baike.baidu.com/link?url=x5kww0M1PlCyffd0GSYNtXGfCOEUMZf_ 0cxqqdhkzyrs1u15zegfbjrdfna7utunyswfjdclhzejeybmspvftk

What are the preparations needed to build a PXE installation? See here 650) this.width=650; "src=" Http://img.baidu.com/hi/jx2/j_0007.gif "alt=" J_0007.gif "/>

First, PXE requires the DHCP service to assign IP and boot image files to it, so the DCHP service is required

The TFTP service is required for the image file to be downloaded.

The basic configuration of the TFTP service is also simple:

Just put the Vmlinuz kernel file and the initrd.img image file and the isolinux.cfg boot file cp to the/var/lib/tftpboot default publishing directory
The DHCP service needs to specify Next-server = IP (TFTP server IP) and filename = isolinux.cfg and basic IP allocation rules.

This basic PXE service is set up, and PXE is not the focus of this article, so it's just a brief description.

0x02 "Script Automation Installation"

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"Automated Operations" from # Manual to # Remote to # Install virtual machines in bulk