elements ubuntu-guest and fedora-guest mess up /etc/hosts

[Amrith Kumar]

These elements contain the following code:

amrith@amrith-work:/opt/stack/trove-integration/scripts/files/elements$ grep -r hostname .
./ubuntu-guest/pre-install.d/60-loopback-host:host_name=`hostname`
./fedora-guest/post-install.d/60-loopback-host:host_name=`hostname`
amrith@amrith-work:/opt/stack/trove-integration/scripts/files/elements$ more ./ubuntu-guest/pre-install.d/60-loopback-host
#!/bin/bash
set -e
set -o xtrace

# CONTEXT: HOST after IMAGE BUILD as SCRIPT USER
# PURPOSE: Set the loopback network in host file

host_name=`hostname`
echo "127.0.0.1 ${host_name}" >> /etc/hosts
amrith@amrith-work:/opt/stack/trove-integration/scripts/files/elements$ more ./fedora-guest/post-install.d/60-loopback-host
#!/bin/bash
set -e
set -o xtrace

# CONTEXT: HOST after IMAGE BUILD as SCRIPT USER
# PURPOSE: Set the loopback network in host file

host_name=`hostname`
echo "127.0.0.1 ${host_name}" >> /etc/hosts
amrith@amrith-work:/opt/stack/trove-integration/scripts/files/elements$

The end result is that the /etc/hosts file on a machine ends up looking like this (shown from an ubuntu machine)

hadoop@h1:~$ more /etc/hosts
127.0.0.1 localhost

# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
127.0.0.1 amrith-work
127.0.1.1 h1.novalocal h1

The issue is with the penultimate line, 127.0.0.1 should NOT point to the name of the machine where the guest image was built!

[Amrith Kumar (amrith)]

https://review.openstack.org/#/c/272711/