Hi Sorry for the late reply I think I have balls things up completely and have got into a confused mess.

So I initially had the machine connected to the business lan with a static I.P address as I needed internet access to update the centos box and to install the required fog packages.

I then proceeded to keep the static connection connected and ran the setup script, during the setup process I specifically told FOG to use the isolated network address,

server ip address 192.168.22.3 ( isolated network)
255.255.255.0
using fog DHCP: yes
DHCP router address:

So the FOG server has a I.P address on the isolated network, and no DHCP router address,

At the end of the installation It is asking me to access the management console with a web address the issue is I cannot access this address as it is on a different subnet from main network.

Lastly When I check the status of the DHCP service.

systemctl status dhcpd.service

No subnet declaration for P4p1 ( 192.168.21.32)
ignoring requests on p4p1. If this is not what you
want pleae write a subnet declaration
in your dhcpd.conf file for the
network segement. to which interface
p4p1 is attached…

I don’t wan’t to use p4p1 for DHCP… more importantly I seem to missing a dhcpd.conf file I mean it’s just completely blank???

Yep I need some help go easy on me people

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Update this is bizzare I restarted the server and I now have a dhcp configuration file in etc/dhcp

I have hooked up a laptop to the isolated network card and have tested the PXE booting aspect this works fine, And this laptop is getting a I.P address in the .22 isolated range, So DHCP is working wahey.

Thank you I will give it a go and report back progress / difficulties. I will document my steps so you can easily troubleshoot or spot potential issues.

Hi guys I posted on here like two years ago but got side tracked and never completed this project.

Current Network setup we have a router which handles DHCP for the building on this network is a serva 32/64 box,
Dishing out PXE support.

I work for a charity that refurbishes donated computer hardware and figured I could put FOG to use for cloning similar
hardware machines.

I am not a network guru am comfortable with the Linux command line and have alot of times of my hands to dabble.

Hardware wise I am using a HP proliant mini server with two network cards with Centos 7 as the base distro.

The machine will have two network cards, I wan’t the primary interface to hook into our main network to allow outside access.

The second interace I want to hook up directly to gigabyte switch and in theory this will be where the imaging happens,
anything I plug into this switch will be able to touch base with the server and image completley avoiding the other
Pxe Server on our network.

I do not require a domain or any active directory access, I have no idea about serva 32/64 I have had a quick look at
the configuration and can see the following:

PROXYDHCP is selected, DHCP is unticked.

( DHCP is currently being handled by the router for the whole building )

Lastly I am not a networking guru so do not mention VLAN’s and wizadry as it will go over my head

But hey I have alot of time on my hands and with your help I can get this setup and will document / blog
the whole process for future reference.

so what is the best approach in creating this isolated setup?

Hi there, thank you for the input I am having difficulty locating a second network card. Can I strictly just use one network card? install fog and then disconnect it from the main network and plug the connection directly into a isolated switch?

I am going to be using Centos 7 as the host distro do you have a link to installation steps? more importantly during the install process recgarding DHCP do I set the fog server to yes or no? I am confused as I want this machine to be isolated and not interfere with the current DHCP server on the network.

Many thanks for guidance I appreciate the hand holding this is all new to me.

Hi guys.

I failed miserably in the past to setup For server. So I am attempting with the help of the gods on this group to attempt to try it again.

The setup I wish to get up and running is a isolated setup.

Literally I am going to use a computer with one network card. I wanted to initially setup up the fog side of things and then pull the plug to the main network and hook it up directly to a isolated switch.

Would this work?

Or do I need some fancy two network card setup with the second card being on a different subnet?

The whole point of getting the setup isolated is because we have a main DHCP server and a PXE server already on the main subnet of the network.

Lastly what base distro should I use?

Ok guys thank you for help, I hope to document all my attempts to get this working so I can then give something back to the community.

I am not a networking ninja go easy on me I’m ok I’m the terminal though

@sebastian-roth Thank you for the explanation, I will have to do some digging on the serva box and see how it has been setup.

Our main DHCP server isn’t actually a router it’s all being handled by a SME Server. I don’t have the authorization to change the dhcpd.conf on the SME box.

Another way regarding FOG couldn’t you just use one Ethernet card create a static I.P with normal network details and main DHCP server and create a virtual interface on a different subnet?

Does Fog install it’s own DHCP server? if so could I just change the port number it operates on? then create a custom IPXE disc to make contact with the Fog server.

Shoot me down if this is wrong.

@sebastian-roth

This sounds very interesting, Do I just configure the Fog server with one nic and setup as usual on or main network? accept all the default DHCP stuff during setup.

i’m just worried that if I set up the box on the main network the box will go live and start clashing with the existing DHCP / PXE.

Thank you for your help

1. Our main network has it’s own DHCP server, which is handled by a router, We do not have Active Directory running in the building everything is handled by a SME server. Which is on a workgroup I think.

2. Our network is pretty basic just a router connected to a server and cables going to switches in different locations in the building. No exotic setup such as vlans, subnets or Cisco wizardry. All of the network is on 192.168.1 subnet.

3. In the workshop my colleague recently setup a Serva 32/64 box which is hosting Windows install isos and boot utilities such as memtest, PC check. He has setup it in such a way that if every computer in the building is booted from pxe via nic is capable of touching base with this server.

4. which leaves me in a situation where I need to isolate so I wouldn’t clash with that Pxe server or cause DHCP conflicts.

My initial config idea would be

Server > 2 NICs .> 1 connected to main network to install fog
2nd nic connect to a switch ( isolated )
The nodes on the switch would need some way of getting DHCP

And accessing the Fog Pxe / TFTP wouldn’t I need to use a router?
I assume nodes on the isolated switch would have to utilize specific port
Numbers for the TFTP / pxe process.

Thank you for your patience and helping me understand network concepts better.

Good Morning guys,

I am sorry if I have posted in the wrong section please feel free to move my post. I have failed in setting up a clonezilla server on our network.

I literally had a box with one nic connected to a switch connected to a router completely isolated from our main network. I could never get a DHCP service to work with the bloody thing. Although the router I had plugged in would assign DHCP to nodes on the switch. Anyways was probably something stupid I was doing on the main box ( maybe I had to setup a dhcp scope on the box? who knows)

Anyways moving on I wish to setup a fog server. I have a few requirements
My layout will be

Server connected to 2 nics
1st nic connect to our main network used for setup and outside connections
2nd nic connected to a switch where I can hook up nodes and clone / deploy via fog.

Centos will be my O/S of choice.

Does anybody have a plain english guide in setting such a layout up? I wan’t to avoid the main network completely aswell already have a DHCP server and a PXE server which is taken up the whole network.

The main issue I struggle with is DHCP, would I have to setup a router to my switch or just leave the switch plugged in directly to the 2nd nic and setup some DHCP wizardry within centos.

help appreciated

@Wayne-Workman

Many Thanks for the guidance I really do appreciate it because of yourself and others on this fantastic forum I have learned alot.

I haven’t had a chance today to play with the FOG stuff. However hopefully I can look at the DHCP configuration side of things tommorow.

I will report back my progress and any problems.

Many Thanks