What I am using in my environment.

Ubuntu Gutsy as atftpd server

DD-WRT on a linksys wrt54g as dhcp server

First go to the services tab. Under “Additional DNSMasq Options” add “dhcp-boot=pxelinux.0,m5box,192.168.1.215” where m5box is the name of the tftp server and 192.168.1.215 is the ip of the tftpserver

apt-get install atftpd tftp atftp

sed -e '/USE_INETD=/s/true/false/' -i /etc/default/atftpd

/etc/init.d/atftpd restart

mkdir /tftpboot

cd /tftpboot

wget http://archive.ubuntu.com/ubuntu/dists/gutsy/main/installer-i386/current/images/netboot/netboot.tar.gz
tar zxf netboot.tar.gz

chown -R nobody: .

You should now be able to pxe boot to ubuntu 7.10 and install a system.

Next task is to pxe/nfs diskless boot a mythfrontend box.

apt-get install apt-mirror apache2

apt-mirror’s configuration file is /etc/apt/mirror.list. There should already be a default configuration in it

Make changes you would like to have.

If you used the defaults you should be all set. If you moved where you want the files stored make sure you create the correct file structure and it has the correct permissions.

When you are ready and have the time just run the following command.

su – apt-mirror -c apt-mirror

Depending on what changes you made to the mirror.list this may take a very long time. I let it go over night the first time I ran it.

Once it is all finished, if you want to point to this mirror from other boxes on your network then you will have to publish the new files via apache2. Example of mythbuntu truck repo below.

ln -s /jn/apt-mirror/mirror/weeklybuilds.mythbuntu.org/mythbuntu-trunk/ /var/www/mythbuntu-trunk

This line setups a symbolic link in apache2 to the new area created with apt-mirror.

Now just go to the source.list file on all of your boxes and point them to the new mirror instead of the official mirror it currently points to.

My current mirror.list:

############# config ##################
#
# set base_path    /var/spool/apt-mirror
set base_path    /jn/apt-mirror
#
# if you change the base path you must create the directories below with write privlages
#
# set mirror_path  $base_path/mirror
# set skel_path    $base_path/skel
# set var_path     $base_path/var
# set cleanscript $var_path/clean.sh
# set defaultarch  x86
set nthreads     20
set tilde 0
#
############# end config ##############

#deb http://us.archive.ubuntu.com/ubuntu gutsy main restricted universe multiverse
deb http://mirror.cs.umn.edu/ubuntu gutsy main restricted universe multiverse
deb-amd64 http://mirror.cs.umn.edu/ubuntu gutsy main restricted universe multiverse

#deb http://archive.ubuntu.com/ubuntu gutsy-updates main restricted universe multiverse
deb http://mirror.cs.umn.edu/ubuntu gutsy-updates main restricted universe multiverse
deb-amd64 http://mirror.cs.umn.edu/ubuntu gutsy-updates main restricted universe multiverse

#deb http://archive.ubuntu.com/ubuntu gutsy-backports main restricted universe multiverse
deb http://mirror.cs.umn.edu/ubuntu gutsy-backports main restricted universe multiverse
deb-amd64 http://mirror.cs.umn.edu/ubuntu gutsy-backports main restricted universe multiverse

#deb http://archive.ubuntu.com/ubuntu gutsy-security main restricted universe multiverse
deb http://mirror.cs.umn.edu/ubuntu gutsy-security main restricted universe multiverse
deb-amd64 http://mirror.cs.umn.edu/ubuntu gutsy-security main restricted universe multiverse

#deb http://archive.ubuntu.com/ubuntu gutsy-proposed main restricted universe multiverse
deb http://mirror.cs.umn.edu/ubuntu gutsy-proposed main restricted universe multiverse
deb-amd64 http://mirror.cs.umn.edu/ubuntu gutsy-proposed main restricted universe multiverse

#deb-src http://archive.ubuntu.com/ubuntu gutsy main restricted universe multiverse
#deb-src http://archive.ubuntu.com/ubuntu gutsy-updates main restricted universe multiverse
#deb-src http://archive.ubuntu.com/ubuntu gutsy-backports main restricted universe multiverse
#deb-src http://archive.ubuntu.com/ubuntu gutsy-security main restricted universe multiverse
#deb-src http://archive.ubuntu.com/ubuntu gutsy-proposed main restricted universe multiverse

#deb http://weeklybuilds.mythbuntu.org/mythbuntu-trunk/ubuntu gutsy multiverse universe restricted main
#deb-amd64 http://weeklybuilds.mythbuntu.org/mythbuntu-trunk/ubuntu gutsy multiverse universe restricted main

#deb http://mirror.cs.umn.edu/ubuntu hardy main restricted universe multiverse
#deb-amd64 http://mirror.cs.umn.edu/ubuntu hardy main restricted universe multiverse

clean http://mirror.cs.umn.edu/ubuntu
#clean http://weeklybuilds.mythbuntu.org/mythbuntu-trunk/ubuntu

It was nice to get wakeonlan working on both frontend boxes.  I want to test the backend sometime also.  My next step will be to get my frontends to shutdown when not in use and power up when we want to use them.  Still thinking about how I am going to do this.

Based off of wiki entry at http://www.mythtv.org/wiki/index.php/Wake-on-LAN

First, find out whether your network card supports wol:

# ethtool eth0
Settings for eth0:
       Supported ports: [ TP MII ]
       Supported link modes:   10baseT/Half 10baseT/Full
                               100baseT/Half 100baseT/Full
       Supports auto-negotiation: Yes
       Advertised link modes:  10baseT/Half 10baseT/Full
                               100baseT/Half 100baseT/Full
       Advertised auto-negotiation: Yes
       Speed: 100Mb/s
       Duplex: Full
       Port: MII
       PHYAD: 1
       Transceiver: internal
       Auto-negotiation: on
       Supports Wake-on: pumbg
       Wake-on: g
       Current message level: 0x00000001 (1)
       Link detected: yes

The ‘g’ in Supports Wake-on: pumbg indicates that wake-on-lan by using a ‘magic packet’ is indeed supported. Next, you need to make sure that wake-on-lan support is enabled in the BIOS (although, this does not seem to be necessary for my motherboard). In addition, you need to tell your network card to enable wake-on-lan:

# ethtool -s eth0 wol g

Since after rebooting Wake-on will be reset, you might what to add it to /etc/rc.local:

# echo 'ethtool -s eth0 wol g' >> /etc/rc.local

Make sure this line is before the line that has exit 0

Now turn off you mythbox and send it a ‘magic packet’.

Send the ‘Macic Packet’
You will need a wake-on-lan client to send ‘magic packets’ over your network. First, determine the MAC address of the machine you what to power on:

# ifconfig

Turn off your mythbox and from another computer execute the following command (replacing the MAC address with the one you just found). I used a wake-on-lan client from Sourceforge.

$ wol 00:4F:49:07:0B:5F

If all went well, your mythbox will boot up now!

1. Create the server key (in this example RSA 1024 bit):

     openssl genrsa -out host.key 1024

2. Make a certificate out of it (it won’t be signed yet):

     openssl req -new -key host.key -out host.csr

3. Create your CA certificate (will be valid for a year):

     openssl req -new -x509 -days 365 -key host.key -out host.crt

Copy info from host.crt and plug it into website of cacert. It will create text you will put in a .csr file

Create the .csr file in the /etc/apache2/ssl area, in this case I called it my host name m1box.csr.

cp host.key m1box.key

Enable the SSL module

sudo a2enmod ssl

Listen to port 443

echo "Listen 443" | sudo tee -a /etc/apache2/ports.conf

Create and enable the SSL site

sudo cp /etc/apache2/sites-available/default /etc/apache2/sites-available/ssl

Modify it so it looks something like this

NameVirtualHost *:443
<virtualhost *:443>
        ServerAdmin webmaster@localhost

        SSLEngine On
        SSLCertificateFile /etc/apache2/ssl/m1box.csr

	SSLCertificateKeyFile /etc/apache2/ssl/m1box.key

…and enable it

sudo a2ensite ssl

don’t forget to modify /etc/apache2/sites-available/default

NameVirtualHost *:80 <virtualhost *:80>