c01f511f30
This fixes a number of broken URLs in the guides. Change-Id: Iae027614ec7466fefafa1b504b348f795bb5fac7 Partial-Bug: #1225093
141 lines
4.8 KiB
Plaintext
141 lines
4.8 KiB
Plaintext
[[ch-network]]
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=== Network Controller Cluster Stack
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The Network controller sits on the management network, but also on the data
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network and needs to be connected to the Internet if VM needs the access to it.
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NOTE: Both nodes should have the same hostname since the Neutron scheduler will be
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aware of one node, for example a virtual router attached to a single L3 node.
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==== Highly available Neutron L3 Agent
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The Neutron L3 agent provides L3/NAT forwarding to ensure external network access
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for VMs on tenant networks. High Availability for the L3 agent is achieved by
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adopting Pacemaker.
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NOTE: Here is the http://docs.openstack.org/trunk/config-reference/content/section_adv_cfg_l3_agent.html[documentation] for installing Neutron L3 Agent.
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===== Adding Neutron L3 Agent resource to Pacemaker
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First of all, you need to download the resource agent to your system:
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----
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cd /usr/lib/ocf/resource.d/openstack
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wget https://raw.github.com/madkiss/openstack-resource-agents/master/ocf/neutron-l3-agent
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chmod a+rx neutron-l3-agent
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----
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You may now proceed with adding the Pacemaker configuration for
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Neutron L3 Agent resource. Connect to the Pacemaker cluster with +crm
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configure+, and add the following cluster resources:
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----
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include::includes/pacemaker-network-l3.crm[]
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----
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This configuration creates
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* +p_neutron-l3-agent+, a resource for manage Neutron L3 Agent service
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+crm configure+ supports batch input, so you may copy and paste the
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above into your live pacemaker configuration, and then make changes as
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required.
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Once completed, commit your configuration changes by entering +commit+
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from the +crm configure+ menu. Pacemaker will then start the Neutron L3 Agent
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service, and its dependent resources, on one of your nodes.
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NOTE: This method does not ensure a zero downtime since it has to recreate all
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the namespaces and virtual routers on the node.
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==== Highly available Neutron DHCP Agent
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Neutron DHCP agent distributes IP addresses to the VMs with dnsmasq (by
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default). High Availability for the DHCP agent is achieved by adopting
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Pacemaker.
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NOTE: Here is the http://docs.openstack.org/trunk/config-reference/content/section_adv_cfg_dhcp_agent.html[documentation] for installing Neutron DHCP Agent.
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===== Adding Neutron DHCP Agent resource to Pacemaker
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First of all, you need to download the resource agent to your system :
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----
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cd /usr/lib/ocf/resource.d/openstack
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wget https://raw.github.com/madkiss/openstack-resource-agents/master/ocf/neutron-dhcp-agent
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chmod a+rx neutron-dhcp-agent
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----
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You may now proceed with adding the Pacemaker configuration for
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Neutron DHCP Agent resource. Connect to the Pacemaker cluster with +crm
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configure+, and add the following cluster resources:
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----
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include::includes/pacemaker-network-dhcp.crm[]
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----
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This configuration creates
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* +p_neutron-dhcp-agent+, a resource for manage Neutron DHCP Agent
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service
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+crm configure+ supports batch input, so you may copy and paste the
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above into your live pacemaker configuration, and then make changes as
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required.
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Once completed, commit your configuration changes by entering +commit+
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from the +crm configure+ menu. Pacemaker will then start the Neutron DHCP
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Agent service, and its dependent resources, on one of your nodes.
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==== Highly available Neutron Metadata Agent
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Neutron Metadata agent allows Nova API Metadata to be reachable by VMs on tenant
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networks. High Availability for the Metadata agent is achieved by adopting
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Pacemaker.
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NOTE: Here is the http://docs.openstack.org/trunk/config-reference/content/networking-options-metadata.html[documentation] for installing Neutron Metadata Agent.
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===== Adding Neutron Metadata Agent resource to Pacemaker
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First of all, you need to download the resource agent to your system :
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----
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cd /usr/lib/ocf/resource.d/openstack
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wget https://raw.github.com/madkiss/openstack-resource-agents/master/ocf/neutron-metadata-agent
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chmod a+rx neutron-metadata-agent
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----
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You may now proceed with adding the Pacemaker configuration for
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Neutron Metadata Agent resource. Connect to the Pacemaker cluster with +crm
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configure+, and add the following cluster resources:
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----
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include::includes/pacemaker-network-metadata.crm[]
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----
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This configuration creates
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* +p_neutron-metadata-agent+, a resource for manage Neutron Metadata Agent
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service
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+crm configure+ supports batch input, so you may copy and paste the
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above into your live pacemaker configuration, and then make changes as
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required.
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Once completed, commit your configuration changes by entering +commit+
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from the +crm configure+ menu. Pacemaker will then start the Neutron Metadata
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Agent service, and its dependent resources, on one of your nodes.
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==== Manage network resources
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You may now proceed with adding the Pacemaker configuration for
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managing all network resources together with a group.
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Connect to the Pacemaker cluster with +crm configure+, and add the following
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cluster resources:
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----
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include::includes/pacemaker-network.crm[]
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----
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