I am running a Mirantis Openstack 5.1.1 HA with 3 nodes. I would like to upgrade all neutron-* packages on all nodes with the latest ones found on http://fuel-repository.mirantis.com/f...

Services:
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p_neutron-dhcp-agent runs on node-1
p_neutron-l3-agent runs on node-3
p_neutron-plugin-openvswitch-agent runs on all nodes
p_neutron-metadata-agent runs on all nodes

what is the proper way to do it and what commands do I need to run on each node to ensure that all routers and dhcp servers will continue to run properly after the upgrade? I don't want for my VMs to loose connectivity if possible.

thank you in advance.