Juju on existing VM

[Kapil Thangavelu]

Juju provides for manual placement so that you can place a workload on an
existing machine within an environment without provisioning a new machine..
ie juju deploy  charm --to=existing_machine   it also supports creating
containers (either lxc or kvm) to run those workloads in isolation from the
host (see juju deploy --help for more details). This is also supported for
add-unit --to=existing_machine.

If you want to setup a single machine environment with a workload and the
capacity to grow on virtual machines using manual provisioning in
conjunction with manual placement makes this use case relatively
straightforward.

configure a 'null' aka manual environment in environments.yaml pointing to
the ip address of the vm (don't use localhost but the ip address that other
machines in the environment will use). Then juju bootstrap. Then juju
deploy charm --to=0.

cheers,

Kapil





On Thu, Jan 23, 2014 at 1:55 AM, Gandhi, Ibha (HP Software) <ibhag at hp.com>wrote:

> Thanks John for the quick reply.
>
> -----Original Message-----
> From: John Arbash Meinel [mailto:john at arbash-meinel.com]
> Sent: Thursday, January 23, 2014 12:13 PM
> To: Gandhi, Ibha (HP Software); Juju email list
> Subject: Re: Juju on existing VM
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 2014-01-23 10:33, Gandhi, Ibha (HP Software) wrote:
> > Hi,
> >
> >
> >
> > I want to deploy application on a specific VM and don?t want to
> > provision a new VM.
> >
> > This is something I have been doing with chef, please let me know if
> > it?s possible to deploy
> >
> > application on a particular VM through juju without provisioning a new
> > one.
> >
> >
> >
> > Thanks,
> >
> > -Ibha
>
> We are currently polishing some work we call "manual provisioning"
> where you have a machine, which you then add into an existing environment.
> The syntax is something like:
>   juju add-machine ssh:user at host
>
> I believe that work isn't very polished in the latest stable release
> (1.16.5) but is quite a bit better in our current unstable snapshot
> (1.17.0) and should be polished for the next stable (1.18).
>
> John
> =:->
>
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