openstack team mailing list archive

[Adam Gandelman <adamg@xxxxxxxxxxxxx>]

On 05/03/2012 06:04 AM, Jorge Luiz Correa wrote:
> Hi list!
>
> I would like to know if someone has tested juju with Essex. I've 
> installed OpenStack using Ubuntu 12.04 and its packages (Essex). The 
> nova components are working fine. I can create and destroy instances. 
> So I'm using Juju from a 11.10 Oneiric. I've made some modifications 
> in my environment.yaml configuration file to work with keystone. In my 
> first tests I could bootstrap, creating a new instance. However, some 
> problems that I'm having now:

I'd recommend using the latest Juju version, either from the Juju PPA 
[1] on oneiric or the version shipped with precise.

> 1) Juju and nova aren't creating secgroup-rules in the right way. I 
> can see new secgroup-rules, like juju-sample, juju-sample-0 and so on. 
> But, when I list the rules, there are NO rules. The immediately impact 
> is that when running 'juju status' the host is not able to access the 
> instances created by juju. If I go to dashboard and add access with 
> the right ports, so juju gets working.

This should be working fine.  We fixed some bugs in nova around security 
groups during Essex that I uncovered trying to get Juju working against 
it, but since then its been working nicely.  I've just bootstrapped 
against an Essex/12.04 and get a functioning security group rule set.  
This may look a bit different depending on what you've named the 
environment, but should be similar: http://paste.ubuntu.com/965169/

> 2) The host running juju 'should' know how to resolve the instance 
> names, like server-8, server-10 to address from cloud network. How we 
> need to deal with it? Host running juju has to use the same DNS that 
> serves the cloud? I've changed the dhcp configuration in juju host to 
> add the address of nova network that runs a dnsmasq and knows how to 
> resolve these names. Is this the right way? Recommendations?

This is mostly a Nova config thing. By default, new instances' public 
hostnames are the same as their private hostnames.    If you want to be 
able to reach instances via their private hostname, you'd need to do 
some DNS magic outside of Juju like you are doing, or perhaps there is a 
documented way of achieving this in Nova itself.  The best solution is 
to instead add '--auto_assign_floating_ip' to nova.conf.  This will 
ensure a public floating IP is associated with new instances and allow 
Juju to reach its nodes that way instead.   This matches the behavior of 
EC2.


Adam

[1] Juju PPA - ppa:juju/pkgs

> Thanks!
>
> --
> - MSc. Correa, J.L.
>
>
>
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