[one-dev] Megam: addon-knife (How can I know a VM is fully launched)

[Thomas Alrin]

Hi
     In your techniques, you've told to ping the VM, but I don't get IP 
at that point.
     I want to wait, to get the ip from my VM. When i run a vm in 
AWS(public cloud) cloud, I can wait for 
/vm_hash['VM']['TEMPLATE'].has_key?('AWS_IP_ADDRESS')/, to get the ip.
     In the above case, the key /AWS_IP_ADDRESS /seems to be depends on 
AWS cloud.
     If i create a vm in private cloud, for which key(like 
/AWS_IP_ADDRESS)/ , i can wait to get the ip address?

	

On Thursday 01 May 2014 08:06 AM, Megam Systems wrote:
> fya.
>
> As we would loose a 12 hr. window, I queued up a request in the dev 
> mailing list.
>
> See if these options help you.
>
>
> -------- Original Message --------
> Subject: 	Re: [one-dev] Megam: addon-knife (How can I know a VM is 
> fully launched)
> Date: 	Wed, 30 Apr 2014 20:23:42 +0200
> From: 	Ruben S. Montero <rsmontero at opennebula.org>
> To: 	Megam Systems <gomegam at megam.co.in>
> CC: 	dev at lists.opennebula.org
>
>
>
> Hi
>
> As mentioned in yout email you are looking for the AWS_IP_ADDRESS key, 
> which is only valid for Amazon Hybrid VMs. This value is obtained 
> through the monitorization process as reported/updated by Amazon.
>
> In general, as boot time of a VM depends on the software stack running 
> wihtin, you cannot rely on the VM status reported by the hypervisors, 
> i.e. RUNNING means that the VM is running at hypervisor level but it 
> can be stuck in the virtual BIOS because of an error or misconfiguration.
>
> In our internal testing platform we use two techniques:
>
> 1.- Pro-active ping the VM, a simple ping+sleep loop with a timeout.
> 2.- Make the VM callback home to a known URL (you may use onegate for 
> this)
>
> Note that both requires connectivity to some extent between the knife 
> controller and the VM.
>
> Cheers
>
> Ruben
>
>
>
>
>
> On Wed, Apr 30, 2014 at 4:24 PM, Megam Systems <gomegam at megam.co.in 
> <mailto:gomegam at megam.co.in>> wrote:
>
>     Dear Dev-OpenNebula,
>
>     When working on the addon-knife, upon launching a VM using the
>     OpenNebula API, there is a need to wait till the VM is fully
>     launched. Currently we wait until an IP address is available from
>     the VMPool.
>
>     Please find the reference of the code here.
>     https://github.com/OpenNebula/addon-knife/blob/master/lib/chef/knife/opennebula_server_create.rb#L168
>
>     We need a better way as OpenNebula can run in private clouds as well.
>
>     How can we know that a VM is fully launched and running ? What
>     parameter (status etc..) helps us to figure out that the VM is
>     running.
>
>     -- 
>     Cheers,
>     Megam Systems; http://www.gomegam.com
>     email : gomegam at megam.co.in <mailto:gomegam at megam.co.in>; twitter:
>     @megamsystems
>     blog  : http://blog.megam.co        | try     : https://www.megam.co
>     github: https://github.com/megamsys | youtube :
>     youtube.com/indykish <http://youtube.com/indykish>
>
>     _______________________________________________
>     Dev mailing list
>     Dev at lists.opennebula.org <mailto:Dev at lists.opennebula.org>
>     http://lists.opennebula.org/listinfo.cgi/dev-opennebula.org
>
>     -- 
>     -- 
>     Ruben S. Montero, PhD
>     Project co-Lead and Chief Architect
>     <http://lists.opennebula.org/listinfo.cgi/dev-opennebula.org>
>     OpenNebula - Flexible Enterprise Cloud Made Simple
>     <http://lists.opennebula.org/listinfo.cgi/dev-opennebula.org>www.OpenNebula.org
>     <http://www.OpenNebula.org> | rsmontero at opennebula.org
>     <mailto:rsmontero at opennebula.org> | @OpenNebula
>
>
>

-- 
With Warm Regards,
Thomas Alrin,
Infrastructure Engineer; Megam Systems;
email: alrin at megam.co.in; cell: +91 9789345999
twitter : @thomasalrin

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