[one-users] Private cloud with Front-end on Virtual MAchine HA

[Giancarlo De Filippis]

Thanks so much Bart, 

That's the case..... because vm running on cluster is more similar to
VMware HA solution (only two hosts without front-end).... 

For the glusterfs i've already used this solution on my public cloud
with success. 

You helped me for port-setup of hypervisors :) 

I hope (like you) that someone (users or OpenNebula Team) have best
practices on how to run OpenNebula in a VM. 

Thks. 

Giancarlo 

Il 13/11/2014 11:38 Bart ha scritto: 

> Hi, 
> 
> Do you mean to have the frontend (OpenNebula management) running on the actual OpenNebula cluster? 
> 
> If that's the case then I would also be very interested in this scenario :) 
> 
> As for GlusterFS, we've followed these instructions with success: 
> 
> * http://docs.opennebula.org/4.10/ [2]
> * http://docs.opennebula.org/4.10/administration/storage/gluster_ds.html [3]
> 
> Also, all other instructions that we found were also on the documentation site. 
> 
> With it, we've created the following: 
> 
> * GLUSTERFS: Two storage hosts (running CentOS 7) in the back-end which provide the whole image/datastore for OpenNebula. HA is setup via round robin DNS. After testing we've found this to work quite well in terms of performance and redundancy (better then expected). All network ports are setup as a bond using balance-alb.
> * HYPERVISORS: a.t.m. 4 hypervisors (will eventually grow to 8) running CentOS 7. They have 2 network ports setup using bonding with balance-alb, they are connected to the virt/storage VLAN. And two network ports setup in a bond using active-backup, this is used for the bridge port (with VLAN tagging enabled). Active-backup seems to be the proper setting for a bridge port since a bridge can't work that well with balance-alb.
> 
> * OPENNEBULA MANAGEMENT NODE: This includes the OpenNebula daemon, sunstone and all other functions. Currently, since we're building up this environment. Hypervisors and storage have been arranged and we're happy with how those parts are setup, however the management node is currently still something we're not very sure about. We're considering buying two physical servers to do this job and create an active backup solution as described in the documentation: http://docs.opennebula.org/4.10/advanced_administration/high_availability/oneha.html [4]. However, buying hardware just for this seems a waste since these servers won't be doing that much (resource wise). 
> 
> * We do have plans on testing this node, dual, on the actual OpenNebula cluster. But something is holding us back. I can't find any proof of someone achieving this. Also, we're seeing some issues that might occur when OpenNebula is managing itself (e.g. live migration, reboot, shutdown, etc.).
> 
> * VIRTUAL MACHINE HA SETUP: We haven't actually started with this part yet, but this document describes on how you can create a setup where virtual machines become HA: http://docs.opennebula.org/4.10/advanced_administration/high_availability/ftguide.html [5] For us this is something we'll probably start looking into once we've found a proper setup for the OpenNebula management node.
> 
> Hopefully this info helps you a little and I also hope someone else can elaborate on running OpenNebula as a VM on it's own cluster. Or, at least other best practices on how to run OpenNebula in a VM without buying two physical servers for this job, (any insight on this subject would be helpful :) 
> 
> -- Bart 
> 
> 2014-11-13 9:50 GMT+01:00 Giancarlo De Filippis <gdefilippis at ltbl.it>:
> 
>> Hi all, 
>> 
>> someone have some documentation for a sample of private cloud structure with: 
>> 
>> - Two nodes in HA 
>> 
>> - Front-end on virtual machine HA 
>> 
>> With storage file system on glusterfs 
>> 
>> Thanks all.. 
>> 
>> GD 
>> _______________________________________________
>> Users mailing list
>> Users at lists.opennebula.org
>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org [1]
> 
> -- 
> 
> Bart G.
 

Links:
------
[1] http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
[2] http://docs.opennebula.org/4.10/
[3]
http://docs.opennebula.org/4.10/administration/storage/gluster_ds.html
[4]
http://docs.opennebula.org/4.10/advanced_administration/high_availability/oneha.html
[5]
http://docs.opennebula.org/4.10/advanced_administration/high_availability/ftguide.html
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