On Fri, Sep 16, 2016 at 11:14:41AM -0700, 'Jungho Ahn' via Kubernetes user 
discussion and Q&A wrote:
> Thanks Rodrigo,
> 
> 
> 
> On Fri, Sep 16, 2016 at 11:07 AM, Rodrigo Campos <rodr...@sdfg.com.ar>
> wrote:
> 
> > On Fri, Sep 16, 2016 at 10:53:45AM -0700, 'Jungho Ahn' via Kubernetes user
> > discussion and Q&A wrote:
> > > Hello,
> > >
> > > I have an app which configuration can be updated dynamically without
> > > restarting it.
> > > I'm wondering if there is any way to
> > >    - send a new configuration to all replicas
> >
> > You can use a configmap for your config, and when changing it, it will be
> > updated on the pods.
> >
> > But, of course, if you screw up your config (syntax error), it might not be
> > good and crash your app (depends on your app). It's probably safer to
> > create a
> > new configmap and deploy again using it.
> >
> > It's way better to create again than to keep state and "update", IMHO.
> > It's part
> > of doing the switch to containers, IMHO, and takes some time :-)
> >
> 
> Yes, that's the reason why I want to update it without restarting it.


I don't think we are on the same page. I say it's better to create rather than
"update".


> > >    - check the status of all replicas
> >
> > What do you mean with this? Not sure I understand.
> >
> 
> Sorry, let me explain more details.
> 
> I have an app that watch a certain resources (like google cloud storage)
> and then add newly added resources or drop the deleted resources.
> In this case, I'd like to know whether all replicas finish to add or drop
> resources after resources has been changed.

You should do that in the same way you do it today, it's totally apart from
kubernetes.

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