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From Marek Wiewiorka <marek.wiewio...@gmail.com>
Subject Re: Running 2 versions of Falcon on the same cluster/upgrade procedure
Date Mon, 22 Feb 2016 08:27:42 GMT
Thank you very much - I will try to follow your hints and let you know!

Marek

2016-02-19 13:26 GMT+01:00 Pallavi Rao <pallavi.rao@inmobi.com>:

> Mark,
> We have been deploying Falcon on our Production systems by just doing stop,
> upgrade, start. Haven't faced issues so far. In case of issues, rollback is
> also as simple as stop, install older version, start.
>
> We haven't really tested running 2 Falcon versions of Falcon Server
> simultaneously on a single machine. If you do, there might be some
> conflicts in terms of both instances trying to write to config store, HDFS
> locations, etc.
>
> Regards,
> Pallavi
>
> On Fri, Feb 19, 2016 at 5:46 PM, pragya mittal <mittal.pragya23@gmail.com>
> wrote:
>
> > Hi Mark,
> >
> > To maintain entities there you can configure the config-store property in
> > startup.properties:
> > # Location to store user entity configurations
> > *.config.store.uri=file://${falcon.home}/data/${falcon.app.type}-store
> >
> > (I usually maintain a standard location to store entity configs and point
> > all my falcon to the same store)
> >
> > After this it is pretty straight-forward. This is how you can migrate
> from
> > one falcon version to another :
> >
> > 1. Stop the old falcon instance. Install Falcon 0.9 on the same cluster
> as
> > the old one. Maintain the config-store property as defined above (in
> prism
> > as well as server)
> > 2. Start falcon-0.9 and you should be able to list your entities.
> Consider
> > re-runing any failed/killed instances if required.
> >
> > Note :
> > Two servers of falcon cannot co-exist in the same cluster as of now.
> >
> > There is no documentation as of now. We will consider adding the same.
> >
> > Thanks,
> > Pragya Mittal
> >
> > On Fri, Feb 19, 2016 at 10:14 AM, Marek Wiewiorka <
> > marek.wiewiorka@gmail.com
> > > wrote:
> >
> > > Hi All - I've basically a question related to migration of entities
> > between
> > > Falcon versions.
> > > I would like to upgrade Falcon from an old version to 0.9 by following
> > such
> > > an procedure:
> > >
> > > 1)Install Falcon 0.9 on the same cluster as the old one (and have them
> > both
> > > running at the same time)- 2 questions arise:
> > > a)is it possible at all and if so what should be configured: ports,
> > > anything else?
> > > b)how to backup the existing entities definition?
> > >
> > > 2) test a few of the processes using the new Falcon
> > > 3)migrate all of the processes to the new Falcon
> > > 4)Decommission the old Falcon installation
> > >
> > > Is there any document describing a migration procedure?
> > > The most import question for me now is the first one - how to run
> > temporary
> > > 2 falcon instances
> > > on the same cluster for testing purposes? Is it safe?
> > >
> > > Many thanks in advance for any hints.
> > >
> > > Marek
> > >
> >
>
> --
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