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Mat,

I've filed a bug [1] and provide you a puppet output inside Nailgun
container [2].

If I remove /etc/yum.repos.d/5.1.1_nailgun - the puppet works fine.

[1]:https://bugs.launchpad.net/fuel/+bug/1392698
[2]: http://xsnippet.org/360279/raw/

Thanks,
Igor

On Fri, Nov 14, 2014 at 1:51 PM, Matthew Mosesohn
<mmosesohn at mirantis.com> wrote:
> Igor,
>
> I'm trying to figure out where the failure is. The 5.1.1 and 6.0
> prebuilt containers contain the correct version of nailgun RPM
> pre-installed. It shouldn't matter if the versions are identical
> (which is a problem for sure).
>
> Can you open a bug and post upgrade logs? I'm interested to see which
> pieces cause the failure and this is some area I didn't plan for in
> container upgrades.
>
> Best Regards,
> Matthew Mosesohn
>
> On Fri, Nov 14, 2014 at 3:43 PM, Igor Kalnitsky <ikalnitsky at mirantis.com> wrote:
>> Hi folks,
>>
>> Yesterday I performed the following upgrade chain:
>>
>>     5.1 -> 5.1.1 -> 6.0
>>
>> and upgrading to 6.0 was failed. I did some research and figure out
>> that Nailgun's container doesn't have Nailgun at all. So here's what
>> happened.
>>
>> 1. When we're upgrading to 6.0 we already have three repos in the
>> system: 5.1, 5.1.1 and 6.0.
>>
>> 2. When we start a new Nailgun container, it runs start.sh which runs
>> puppet [1].
>>
>> 3. And puppet fails to install a Nailgun package. Why it's happened?
>> We have the same Nailgun version in both 5.1.1 and 6.0 repos, but
>> those packages have different dependencies. From yum's point of view,
>> the packages are same (since they have the same version), so yum tries
>> to install the Nailgun from 5.1.1 repo, but the container contains
>> already installed dependencies for the Nailgun from 6.0 (they were
>> installed during building container), and obviously it fails with
>> failed dependencies errors (we have higher versions in the system).
>>
>> Well, the issue blocks complex upgrade chains and definitely we have
>> to do something ASAP.
>>
>> In order to protect us from similar issues in future I propose next changes:
>>
>> 1. Increase versions of all Fuel packages at least once per release.
>>
>> 2. Remove a package installation code from manifests - the container
>> should not install packages, they should be installed during container
>> building process.
>>
>> What do you think, folks?
>>
>>
>> [1]: https://github.com/stackforge/fuel-main/blob/master/docker/nailgun/start.sh#L11
>>
>> Thanks,
>> Igor
>>
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>
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