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Multiple instances of Neutron

asked 2013-09-30 03:40:10 -0500

Bart van den Heuvel gravatar image

Having multiple instances of OpenStack components is great to have a scallable, high available OpenStack cloud. For some components of OpenStack i know for certain that i can run multiple instances in the same cloud, how about Neutron.

  • Can i have multiple Neutron instances in the same cloud?
  • Does having multiple instances impact network designs (GRE or VLAN)
  • Are there differences between Grizzly and Havana in this context?

Many thanks!

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answered 2015-10-30 19:00:28 -0500

MIB gravatar image

Hi, Yes you can run multiple instance of neutron service on multiple node.

On multiple controller node install neutron-server,on multiple neutron node install l3-agent,dhcp-agent,openvswitch-plugin agent,metadata agent.

Enable below parameters in neutron.conf

allow_automatic_l3agent_failover = True //this one only control node configuration on the line, the remaining node does not need

l3_ha = True

max_l3_agents_per_router = 3

min_l3_agents_per_router = 2 //here based on the actual number of agent to write L3

dhcp_agents_per_network = 2 //here dhcp agent based on the actual number to write

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answered 2015-10-31 02:03:45 -0500

dbaxps gravatar image

updated 2015-10-31 02:05:31 -0500

Addressing "Can i have multiple Neutron instances in the same cloud?"
See - High Availability using VRRP (L3HA) with Open vSwitch
1. http://docs.openstack.org/networking-...
2. http://www.linux.com/community/blogs/...

Setup VRRP (two Network Nodes running keepalived ) doesn't require HA Controller Setup,which needs 3 boxes as well as configuration of Multi Master Synchronous Replication for MySQL Galera DB. Just one Neutron Server on Controller is enough.
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Asked: 2013-09-30 03:40:10 -0500

Seen: 231 times

Last updated: Oct 31 '15