[openstack-dev] [packaging] [puppet] how to deal with the rename of config files in neutron on upgrade?

Kevin Benton blak111 at gmail.com
Thu Jul 2 20:38:56 UTC 2015

>Will the agent still consider/read the old configuration file?

That's up to the packagers. The agent reads whatever config files are
passed as args to the process.

On Thu, Jul 2, 2015 at 11:02 AM, Mathieu Gagné <mgagne at iweb.com> wrote:

> Adding [puppet] tag to subject.
> On 2015-07-02 11:35 AM, Matt Riedemann wrote:
> > This change in neutron [1] renames the linuxbridge and openvswitch
> > plugin config files.  I'm familiar with the %config(noreplace) directive
> > in rpm but I'm not sure if there is a special trick with rpm to rename a
> > config file while not losing the changes in the config file during the
> > upgrade.
> >
> > Is this just something that has to be handled with trickery in the %post
> > macro where we merge the contents together if the old config file
> > exists?  Would symbolic links help?
> >
> > Changes like this seem like a potential giant pain in the ass for
> > packagers.
> >
> And people maintaining configuration manager.
> Will the agent still consider/read the old configuration file?
> I'm not sure how we will be able to maintain compatibility without
> involving manual steps or potential misconfiguration. Furthermore, we
> have to consider upgrades.
> Neutron agent configuration files are already a mess in distribution
> packaging. Ok, I exaggerated the situation, it's only a mess with Ubuntu
> [2] where it thought it would be a great idea to read the agent config
> from ml2_conf.ini instead of ovs_neutron_plugin.ini like all the other
> distributions.
> Now as Puppet modules authors, should we just update the path to the
> configuration file and hope it's compatible with upstream packages?
> > [1] https://review.openstack.org/#/c/195277/
> [2] https://gist.github.com/mgagne/e2e06f5a8cb283a81cab
> --
> Mathieu
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Kevin Benton
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