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#!/usr/bin/python
#
# Fetch login credentials for EC2
# Copyright 2008 Canonical Ltd.
#
# Author: Chuck Short <chuck.short@canonical.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import urllib
import os
from Cheetah.Template import Template
api_ver = '2008-02-01'
metadata = None
base_url = 'http://169.254.169.254/%s/meta-data' % api_ver
my_hostname = urllib.urlopen('%s/local-hostname/' % base_url).read()
os.system('hostname %s' % my_hostname)
# replace the ubuntu hostname in /etc/hosts
mp = {'hostname': my_hostname}
t = Template(file="/etc/ec2-init/templates/hosts.tmpl", searchList=[mp])
os.system("rm /etc/hosts")
f = open("/etc/hosts", "w")
f.write('%s' %(t))
f.close()
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