Ubuntu on EC2

ec2-set-hostname should not put the public hostname in /etc/hosts

Bug #352745 reported by John Hampton
4
Affects Status Importance Assigned to Milestone
Ubuntu on EC2
Fix Committed
Undecided
Unassigned

Bug Description

ec2-set-hostname adds the ec2 public hostname to /etc/hosts resolving to 127.0.1.1. The public hostname can be changed at any time during the lifetime of the instance (associating/detaching elastic IPs for instance). I think it would be better if only the internal host name is added to /etc/hosts as this should remain constant.

Related branches

lp:ubuntu/karmic/ec2-init
Revision history for this message
Eric Hammond (esh) wrote :

This makes sense to me, too.

Note that another side effect of the current approach is that "hostname --fqdn" returns the initial external hostname (which, as John points out, may not stay accurate depending on external factors).

Changed in ubuntu-on-ec2:
status: New → Confirmed
Revision history for this message
Chuck Short (zulcss) wrote :

Fixed for the next release.

Changed in ubuntu-on-ec2:
status: Confirmed → Fix Committed
Revision history for this message
Patrick J. McNerthney (pmcnerthney) wrote :

In addition, could this process establish the name in /etc/hosts on every boot? Right now, it is coded such that it only gets set upon the first boot. What happens in my use case, is that I have created my own AMI from the Ubuntu instance, and when I subsequently launch my own AMI, the /etc/hosts file retains the original set of host names.

Pat McNerthney
ClearPoint Metrics, Inc.

Revision history for this message
Eric Hammond (esh) wrote :

Marking this as a duplicate of #407861 in which I've tried to summarize what I think is the best approach to solving the problems here.

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