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Does Openstack support Contextualization like Nimbus ?

asked 2014-11-09 02:23:52 -0500

Rameez ahmad gravatar image

Our team has setup mpi(message passing interface) cluster of virtual machines using Nimbus toolkit installed on our infrastructure . Now , we want to move from nimbus to openstack . But , to provision on-demand mpi clusters(of virtual machines) , we need to know if Openstack supports contextualization or not . In simple terms , what Contextualization(in Nimbus) does is that once multiple virtual machines boot together(using cluster run option) , it helps running scripts on 1 VM which has its arguments as IP address/hostname of other VM in cluster . This feature is important for enabling passwordless ssh as they boot and also for mounting an NFS directory from from 1 virtual machine on other VMs dynamically . Please help as it is very important and please write if I need to give further explaination about Contextualization and problem we are facing in shifting to Openstack .

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answered 2014-11-09 07:08:14 -0500

Running multiple machines together: Yes in OpenStack we can run multiple machines together, also you can use heat component of OpenStack.

For Password less access: Yes OpenStack supports password less option while booting using keypair concept. For more details below is the link http://docs.openstack.org/havana/inst...

Overall summary is: You can freely migrate tomOpenStack. If you want further information you can reach us at:

answers@techpatron.co.in

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Thank you for the reply. But, what I understood from the URL you gave is that it shows how we can let the HOST machine have a passwordless ssh access to the VIRTUAL machine instance. Actually I need 1 VIRTUAL machine to have passwordless access to other VIRTUAL machine(both machines run together)

Rameez ahmad gravatar imageRameez ahmad ( 2014-11-10 23:56:51 -0500 )edit

OpenStack is not providing this option. But it provides --file option, to place user specified file desired location. http://docs.openstack.org/user-guide/...

If it doesn't work, then only way is need to right our own automation script, which enables passwordless login.

TechPatron gravatar imageTechPatron ( 2014-11-11 01:04:35 -0500 )edit

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Asked: 2014-11-09 02:23:52 -0500

Seen: 198 times

Last updated: Nov 09 '14