[ovirt-devel] oVirt node, hosted-engine, oVirt appliance and cloud-init

[Michal Skrivanek]

On Mar 13, 2015, at 20:53 , Tolik Litovsky <tlitovsk at redhat.com> wrote:

> Hi
> 
> First of all I think cloud-init is optional so user can select if use it or not.
> So if somebody wants to deploy hosted engine the hard way by installing it on OS , its his choice allowed too.

in this case you can require the user to pre-install the cloud-init rpm or use a cloud-ready images
we use this approach for neutron appliance, though, to be fair…last time I tried it on the latest image cloud-init just doesn't work:) it's not really a rock-solid thingie…but in normal conditions it seems to work, more or less.

virt-sysprep is another way, not requiring and guest-side cooperation

Thanks,
michal

> For our appliance I dont think we need anything except for root password.
> Last option is in case somebody have some complicated net config he needs to implement in the engine VM on the first run 
> we should allow him the option to provide the cloud-init iso by himself and he can define all he wants there.
> 
> Tolik.
> ----- Original Message -----
>> From: "Simone Tiraboschi" <stirabos at redhat.com>
>> To: devel at ovirt.org, "users-ovirt" <users at ovirt.org>
>> Cc: "Fabian Deutsch" <fdeutsch at redhat.com>, "Tolik Litovsky" <tlitovsk at redhat.com>
>> Sent: Thursday, 12 March, 2015 4:02:04 PM
>> Subject: oVirt node, hosted-engine, oVirt appliance and cloud-init
>> 
>> Hi all,
>> cloud-init is a powerful tool to configure from outside a cloud
>> instance or an appliance as in our scenario.
>> 
>> Deploying the engine as an appliance is indeed a good way to speed up
>> and make easier the hosted-engine deployment: you don't need to
>> install an OS on the engine virtual machine and than install the
>> engine and so on but you could simply run a ready to use oVirt
>> engine appliance. But you still need to configure it and so
>> cloud-init support within hosted-engine is a reasonable way to
>> complement it.
>> 
>> Then we could also integrate it with oVirt node to let the user input
>> the required info from node TUI in order to have an almost
>> unattended hosted-engine setup on oVirt node using an engine
>> appliance with cloud-init.
>> 
>> The idea is to collect the required information interactively from
>> hosted-engine setup or from node TUI (passing them to hosted-engine
>> setup via an answer file) and pass them to the appliance via
>> cloud-init using a no-cloud datasource.
>> 
>> So now the question is what do you really want to configure via
>> cloud-init?
>> It's just to define what we want in order to be more focused on user
>> needs:
>> for instance we could configure engine VM instance hostname, we could
>> set the root password, we could create other users, we could upload
>> ssh private keys, we could run a command on the first boot and so
>> on.
>> So, if you have any ideas or requirement about that it's the right
>> time for it.
>> 
>> thanks,
>> Simone
>> 
>> 
>> 
>> 
>> 
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