Thank you, Chris, for the idea. The IP addresses would be randomly
distributed, while I would like to keep them in a contiguous range.
On 03.10.2011 18:52, Chris Davies wrote:
Javier Barroso<[email protected]> wrote:
If you know which macs you will have, you can make an init script
which generate /etc/network/interface and /etc/hostname and /etc/hosts
the first boot and then remove itself.
You don't even need to know in advance the MACs as long as enough of
the address is unique.
$ cat /etc/init.d/10setnetworkonlyfirstboot
#!/bin/bash
#> mymac=$(ip add show dev eth0 | awk '/ether/ {print $2}')
#> myhost=$(awk "/$mymac/ {print \$3}")
#> myip=$(awk "/$mymac/ {print \$2}")
myhex=$(
ip add show dev eth0 | # Get the interface detail
awk '/ether/ {print toupper($2)}' | # Extract MAC
cut -d: -f6 # Get last octet (as hex)
)
mydec=$( echo "16 i $myhex p" | dc ) # Convert hex to dec
myip="192.168.1.$mydec" # Must guarantee not 0 or 255
sed -i "s/IP/$myip" /etc/network/interfaces # and probably some
changes in /etc/hosts
sed -i "s/HOSTNAME/$myhost" /etc/hostname # and probably some changes
in /etc/hosts
rm -f /etc/init.d/10setnetworkonlyfirstboot
Rather than removing the configuration file, you could add, say,
"# Configured eth0" to /etc/network/interfaces during setup. Next time
just exit if that line exists in the file.
--
Ireneusz (Irek) Szczesniak
http://www.irkos.org
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