How to test a new dhcp server

B

balanga

I would like to test the working of a dhcp server which I'm setting up on different system to my actual dhcp server - host 1

Should I just stop host 1 then start host 2, and after testing do the reversal.

I'm trying to set up host 2 as a PXE server and not really clear what is required.

Do I actually need a DHCP server on host 1, or is it simply sufficient to set the NEXT-SERVER parameter on the host 1's config to point at host 2's TFTPD?
 
I did my testing on an isolated hub so I didn't need to worry about confusing the rest of the network.

You should be able to add a clause to your existing DHCP server that matches the MAC address of the target host to point it to host 2 via next-server.

To verify that part is working, you can tail /var/log/xferlog on host 2 and also /var/log/daemon.log on the DHCP server when your PXE client boots.
 
I give to dhcpd the name of the interface as argument, and a crossover cable is connected to that interface leading to the computer booting with PXE.

You need tftp for pxe booting, in order that the client download the kernel.
 
unitrunker said:
(I'm actually in the middle of getting my NFS server file system sorted for PXE boot)
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Did it with a Raspberry 0. As far as I remember, you need a world tree shared in TFTP and not visible from outside. since it assumes always-root like single-user mode. It was to be able to boot a price list display without SD-card because they die too often. (They are much better now, doing years with a class 10 TDK. It doesn't seem to happen so much anymore)
 
unitrunker said:
You can peek here to see where I'm at: https://forums.freebsd.org/threads/diskless-pxe-boot-stuck.101117/#post-736408 (and that link is for 11.0-RELEASE).
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I had this set up many years ago but it was always a little hit and miss.

My first interest in PXE was about ten years ago when I came across this guide:=


I'm currently trying to get this working again as I haven't touched it in years.

PXE booting is what I want to set up most so that I can back up a lot of laptop hard disks.
 
I'm trying to set up the NEXT-SERVER option in dnsmasq

using:

dhcp-option=option:66,192.168.1.250

and get this error when re-starting

dnsmasq: bad dhcp-option at line 25 of /usr/local/etc/dnsmasq.conf

What am I missing here?
 
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