[Bug 596993] Re: hostname handling needs improvement for elastic-ip and ebs start-stop

[Gerry Reno]

Running the following commands appears to correctly set all the forms of
hostname on my Lucid ec2 instance:

echo "$(curl -s http://169.254.169.254/latest/meta-data/local-hostname)"
| sed 's:\..*$::' > /etc/hostname

/sbin/sysctl -w kernel.hostname="$(curl -s http://169.254.169.254/latest
/meta-data/local-hostname | sed 's:\..*$::')"

logout/login shell

root at ip-10-XXX-181-59:~# uname -n
ip-10-XXX-181-59
root at ip-10-XXX-181-59:~# hostname -s
ip-10-XXX-181-59
root at ip-10-XXX-181-59:~# hostname -d
ec2.internal
root at ip-10-XXX-181-59:~# hostname -f
ip-10-XXX-181-59.ec2.internal
root at ip-10-XXX-181-59:~# hostname
ip-10-XXX-181-59
root at ip-10-XXX-181-59:~# echo $HOSTNAME
ip-10-XXX-181-59
root at ip-10-XXX-181-59:~# cat /etc/hostname
ip-10-XXX-181-59
root at ip-10-XXX-181-59:~# /sbin/sysctl -n kernel.hostname
ip-10-XXX-181-59

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https://bugs.launchpad.net/bugs/596993

Title:
  hostname handling needs improvement for elastic-ip and ebs start-stop