Difference between revisions of "NetBoot server principle"
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| + | [[Category:Linux]] | ||
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| + | =Requirements= | ||
| + | |||
| + | To setup a PXE NetBoot infrastructure you MUST have: | ||
| + | * [[DHCP server installation | DHCP server]] | ||
| + | * [[TFTP server]] | ||
| + | * [[NFS server]] | ||
| + | |||
| + | Optional: | ||
| + | * [[DNS server]] | ||
| + | * [[Samba server]] | ||
| + | |||
| + | |||
=Overview of a NetBoot sequence= | =Overview of a NetBoot sequence= | ||
| − | [[File:NetBoot sequence principle.png]] | + | |
| + | [[File:NetBoot sequence principle.png|none|NetBoot sequence overview (FreeBSD (c))]] | ||
| + | |||
1. Client broadcasts a DHCPDISCOVER message. | 1. Client broadcasts a DHCPDISCOVER message. | ||
2. The DHCP server responds with: | 2. The DHCP server responds with: | ||
| − | + | * the computer IP address, | |
| − | + | * TFTP server address (called "next-server"), | |
| − | + | * PXE boot filename to load, | |
| − | + | * NetBoot root-path values. | |
3. The client sends a TFTP request to "next-server", asking to retrieve the PXE filename. | 3. The client sends a TFTP request to "next-server", asking to retrieve the PXE filename. | ||
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5. Many things here: | 5. Many things here: | ||
| − | + | * The client executes filename, which is in PXE format. | |
| − | + | * The PXE menu will be display so the user can choose which kernel to load | |
| − | + | * Then PXE loads the kernel. | |
| − | + | * When the kernel executes, the root file system specified by root-path is mounted. If it's a diskless workstation then the client distribution will be mounted in NFS mode. | |
| − | + | ||
| + | =Diskless NetBoot= | ||
| − | = | + | The following picture describes the same thing as before in the sequential order: |
| + | |||
| + | [[File:NetBoot overview step by step.png|none|NetBoot overview step by step]] | ||
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| + | Note that you have to prepare the image before being able to boot on it. ^^ | ||
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| + | =Installation steps= | ||
| + | |||
| + | 1. First you need to setup a '''DHCP and DNS''' server. | ||
| + | |||
| + | |||
| + | 2. Then you'll need to setup a '''TFTP server''' and setup some kernels for NetBoot | ||
| + | |||
| + | |||
| + | 3. Setup a '''NFS server''' | ||
| + | |||
| + | |||
| + | 4. Create a '''NFS image''' | ||
| − | |||
| + | 5. Reference the NFS image into the TFTP server | ||
| − | |||
| + | 6. Run the image ! ;) | ||
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=References= | =References= | ||
| − | The overview picture comes from the FreeBSD forum: http://www.nl.freebsd.org/doc/handbook/network-diskless.html | + | The 1st overview picture comes from the FreeBSD forum: http://www.nl.freebsd.org/doc/handbook/network-diskless.html |
Latest revision as of 14:47, 21 August 2014
Contents
Requirements
To setup a PXE NetBoot infrastructure you MUST have:
Optional:
Overview of a NetBoot sequence
1. Client broadcasts a DHCPDISCOVER message.
2. The DHCP server responds with:
- the computer IP address,
- TFTP server address (called "next-server"),
- PXE boot filename to load,
- NetBoot root-path values.
3. The client sends a TFTP request to "next-server", asking to retrieve the PXE filename.
4. The TFTP server responds and sends filename to client.
5. Many things here:
- The client executes filename, which is in PXE format.
- The PXE menu will be display so the user can choose which kernel to load
- Then PXE loads the kernel.
- When the kernel executes, the root file system specified by root-path is mounted. If it's a diskless workstation then the client distribution will be mounted in NFS mode.
Diskless NetBoot
The following picture describes the same thing as before in the sequential order:
Note that you have to prepare the image before being able to boot on it. ^^
Installation steps
1. First you need to setup a DHCP and DNS server.
2. Then you'll need to setup a TFTP server and setup some kernels for NetBoot
3. Setup a NFS server
4. Create a NFS image
5. Reference the NFS image into the TFTP server
6. Run the image ! ;)
References
The 1st overview picture comes from the FreeBSD forum: http://www.nl.freebsd.org/doc/handbook/network-diskless.html
