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[Bug 1201873] Re: dnsmasq does not use -h, so /etc/hosts sends folks to loopback when they look up the machine it's running on

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Chuck Short <chuck.short@xxxxxxxxxxxxx>
Date: Thu, 09 Jan 2014 14:22:29 -0000
Reply-to: Bug 1201873 <1201873@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Also affects: nova
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1201873

Title:
  dnsmasq does not use -h, so /etc/hosts sends folks to loopback when
  they look up the machine it's running on

Status in OpenStack Compute (Nova):
  New
Status in “nova” package in Ubuntu:
  Confirmed

Bug description:
   from dnsmasq(8):

        -h, --no-hosts
                Don't read the hostnames in /etc/hosts.

  
  I reliably get bit by this during certain kinds of deployments, where my nova-network/dns host has an entry in /etc/hosts such as:

  127.0.1.1    hostname.example.com hostname

  I keep having to edit /etc/hosts on that machine to use a real IP,
  because juju gets really confused when it looks up certain openstack
  hostnames and gets sent to its own instance!

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