How-to build PXE Fedora 26 live image

Sometimes it may be handy to PXE boot live image (running only in memory) over the network.

On this page https://lukas.zapletalovi.com/2016/08/hidden-feature-of-fedora-24-live-pxe-boot.html I found a easy way how to boot Fedora Live CD over the network.

In my case I prefer to build my own image to reduce the size, because I do not need GUI and many other applications located on Fedora Live CD.

Here are few steps how to do it using Lorax project.

TP-Link TL-WR1043ND and OpenWrt 12.09 with two SSIDs (MultiSSID) - private and guest

I decided to change my home network to match the following "network diagram":

The core part of the design is TP-Link TL-WR1043ND wifi router running OpenWrt with small 16GB USB stick [/dev/sda1] containing ext3 partition with OpenWrt configuration + swap.

There are also 16GB USB stick and 2 thermometers connected using USB <-> Serial connector (bought on eBay):

I'm going to use the last stable version of the OpenWrt firmware: openwrt-ar71xx-generic-tl-wr1043nd-v1-squashfs-sysupgrade.bin

Upgrade the firmware and remove the old configuration:

rm -r /tmp/opkg-lists/
sysctl -w vm.drop_caches=1
sysupgrade -v -n http://downloads.openwrt.org/attitude_adjustment/12.09/ar71xx/generic/openwrt-ar71xx-generic-tl-wr1043nd-v1-squashfs-sysupgrade.bin

Here are the notes how way how I configured it.

If you don't like the commands feel free to check the configs here: https://github.com/ruzickap/linux.xvx.cz/tree/gh-pages/files/openwrt

PXE server using Dnsmasq and SystemRescueCD with minimal effort

If you are using DHCP server in your network environment, it's handy to be able to boot from network. It brings you many advantages especially when you are not able to boot operating system from the workstation's disk.

I would like to describe my experience with DHCP server called Dnsmasq. This software can also serve TFTP requests and act as DNS forwarder.