[openstack-dev] Unified Guest Agent proposal

Dmitry Mescheryakov dmescheryakov at mirantis.com
Fri Dec 6 19:45:00 UTC 2013

Hello all,

We would like to push further the discussion on unified guest agent. You
may find the details of our proposal at [1].

Also let me clarify why we started this conversation. Savanna currently
utilizes SSH to install/configure Hadoop on VMs. We were happy with that
approach until recently we realized that in many OpenStack deployments VMs
are not accessible from controller. That brought us to idea to use guest
agent for VM configuration instead. That approach is already used by Trove,
Murano and Heat and we can do the same.

Uniting the efforts on a single guest agent brings a couple advantages:
1. Code reuse across several projects.
2. Simplified deployment of OpenStack. Guest agent requires additional
facilities for transport like message queue or something similar. Sharing
agent means projects can share transport/config and hence ease life of

We see it is a library and we think that Oslo is a good place for it.

Naturally, since this is going to be a _unified_ agent we seek input from
all interested parties.

[1] https://wiki.openstack.org/wiki/UnifiedGuestAgent


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