OpenStack : Install Kilo on Fedora 22 : Networking Service : Install and configure compute node

http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-compute-node.html

Also need to open ports for firewall
# firewall-cmd --get-default-zone
FedoraServer
# firewall-cmd --permanent --zone=FedoraServer --add-port=5900/tcp (for VNC console)
#  firewall-cmd --reload
 firewall-cmd --list-ports
5900/tcp

Install and configure compute node

The compute node handles connectivity and security groups for instances.

To configure prerequisites

Before you install and configure OpenStack Networking, you must configure certain kernel networking parameters.

1. Edit the /etc/sysctl.conf file to contain the following parameters:
   

   net.ipv4.conf.all.rp_filter=0
   net.ipv4.conf.default.rp_filter=0
   net.bridge.bridge-nf-call-iptables=1
   net.bridge.bridge-nf-call-ip6tables=1

2. Implement the changes:
   

   # sysctl -p

 # sysctl -p
net.ipv4.conf.all.rp_filter = 0
net.ipv4.conf.default.rp_filter = 0
sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory
sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-ip6tables: No such file or directory

To install the Networking components

• # yum install openstack-neutron openstack-neutron-ml2 openstack-neutron-openvswitch

To configure the Networking common components

The Networking common component configuration includes the authentication mechanism, message queue, and plug-in.

	Note
	Default configuration files vary by distribution. You might need to add these sections and options rather than modifying existing sections and options. Also, an ellipsis (...) in the configuration snippets indicates potential default configuration options that you should retain.

• Edit the /etc/neutron/neutron.conf file and complete the following actions:
  
  1. In the [database] section, comment out any connection options because compute nodes do not directly access the database.
  2. In the [DEFAULT] and [oslo_messaging_rabbit] sections, configure RabbitMQ message queue access:
     
     

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     [DEFAULT] ... rpc_backend = rabbit [oslo_messaging_rabbit] ... rabbit_host = controller rabbit_userid = openstack rabbit_password = RABBIT_PASS

     Replace RABBIT_PASS with the password you chose for the openstack account in RabbitMQ.
  3. In the [DEFAULT] and [keystone_authtoken] sections, configure Identity service access:
     
     

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     [DEFAULT] ... auth_strategy = keystone [keystone_authtoken] ... auth_uri = http://controller:5000 auth_url = http://controller:35357 auth_plugin = password project_domain_id = default user_domain_id = default project_name = service username = neutron password = NEUTRON_PASS

     Replace NEUTRON_PASS with the password you chose or the neutron user in the Identity service.
     

     	Note
     	Comment out or remove any other options in the [keystone_authtoken] section.

  4. In the [DEFAULT] section, enable the Modular Layer 2 (ML2) plug-in, router service, and overlapping IP addresses:
     
     

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     [DEFAULT] ... core_plugin = ml2 service_plugins = router allow_overlapping_ips = True

  5. (Optional) To assist with troubleshooting, enable verbose logging in the [DEFAULT] section:
     
     

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     [DEFAULT] ... verbose = True

To configure the Modular Layer 2 (ML2) plug-in

The ML2 plug-in uses the Open vSwitch (OVS) mechanism (agent) to build the virtual networking framework for instances.

• Edit the /etc/neutron/plugins/ml2/ml2_conf.ini file and complete the following actions:
  
  1. In the [ml2] section, enable the flat, VLAN, generic routing encapsulation (GRE), and virtual extensible LAN (VXLAN) network type drivers, GRE tenant networks, and the OVS mechanism driver:
     
     

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     [ml2] ... type_drivers = flat,vlan,gre,vxlan tenant_network_types = gre mechanism_drivers = openvswitch

  2. In the [ml2_type_gre] section, configure the tunnel identifier (id) range:
     
     

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     [ml2_type_gre] ... tunnel_id_ranges = 1:1000

  3. In the [securitygroup] section, enable security groups, enable ipset, and configure the OVS iptables firewall driver:
     
     

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     [securitygroup] ... enable_security_group = True enable_ipset = True firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver

  4. In the [ovs] section, enable tunnels and configure the local tunnel endpoint:
     
     

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     [ovs] ... local_ip = INSTANCE_TUNNELS_INTERFACE_IP_ADDRESS

     Replace INSTANCE_TUNNELS_INTERFACE_IP_ADDRESS with the IP address of the instance tunnels network interface on your compute node.
  5. In the [agent] section, enable GRE tunnels:
     
     

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     [agent] ... tunnel_types = gre

To configure the Open vSwitch (OVS) service

The OVS service provides the underlying virtual networking framework for instances.

• Start the OVS service and configure it to start when the system boots:
  

  # systemctl enable openvswitch.service
  # systemctl start openvswitch.service

To configure Compute to use Networking

By default, distribution packages configure Compute to use legacy networking. You must reconfigure Compute to manage networks through Networking.

• Edit the /etc/nova/nova.conf file and complete the following actions:
  
  1. In the [DEFAULT] section, configure the APIs and drivers:
     
     

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     [DEFAULT] ... network_api_class = nova.network.neutronv2.api.API security_group_api = neutron linuxnet_interface_driver = nova.network.linux_net.LinuxOVSInterfaceDriver firewall_driver = nova.virt.firewall.NoopFirewallDriver

     	Note
     	By default, Compute uses an internal firewall service. Since Networking includes a firewall service, you must disable the Compute firewall service by using the nova.virt.firewall.NoopFirewallDriver firewall driver.

  2. In the [neutron] section, configure access parameters:
     
     

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     [neutron] ... url = http://controller:9696 auth_strategy = keystone admin_auth_url = http://controller:35357/v2.0 admin_tenant_name = service admin_username = neutron admin_password = NEUTRON_PASS

     Replace NEUTRON_PASS with the password you chose for the neutron user in the Identity service.

To finalize the installation

1. The Networking service initialization scripts expect a symbolic link /etc/neutron/plugin.ini pointing to the ML2 plug-in configuration file, /etc/neutron/plugins/ml2/ml2_conf.ini. If this symbolic link does not exist, create it using the following command:
   

   # ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini

   Due to a packaging bug, the Open vSwitch agent initialization script explicitly looks for the Open vSwitch plug-in configuration file rather than a symbolic link /etc/neutron/plugin.ini pointing to the ML2 plug-in configuration file. Run the following commands to resolve this issue:
   

   # cp /usr/lib/systemd/system/neutron-openvswitch-agent.service \
     /usr/lib/systemd/system/neutron-openvswitch-agent.service.orig
   # sed -i 's,plugins/openvswitch/ovs_neutron_plugin.ini,plugin.ini,g' \
     /usr/lib/systemd/system/neutron-openvswitch-agent.service

2. Restart the Compute service:
   

   # systemctl restart openstack-nova-compute.service

3. Start the Open vSwitch (OVS) agent and configure it to start when the system boots:
   

   # systemctl enable neutron-openvswitch-agent.service
   # systemctl start neutron-openvswitch-agent.service

Verify operation

	Note
	Perform these commands on the controller node.

1. Source the admin credentials to gain access to admin-only CLI commands:
   

   $ source admin-openrc.sh

2. List agents to verify successful launch of the neutron agents:
   

   $ neutron agent-list
   +--------------------------------------+--------------------+----------+-------+----------------+---------------------------+
   | id                                   | agent_type         | host     | alive | admin_state_up | binary                    |
   +--------------------------------------+--------------------+----------+-------+----------------+---------------------------+
   | 30275801-e17a-41e4-8f53-9db63544f689 | Metadata agent     | network  | :-)   | True           | neutron-metadata-agent    |
   | 4bd8c50e-7bad-4f3b-955d-67658a491a15 | Open vSwitch agent | network  | :-)   | True           | neutron-openvswitch-agent |
   | 756e5bba-b70f-4715-b80e-e37f59803d20 | L3 agent           | network  | :-)   | True           | neutron-l3-agent          |
   | 9c45473c-6d6d-4f94-8df1-ebd0b6838d5f | DHCP agent         | network  | :-)   | True           | neutron-dhcp-agent        |
   | a5a49051-05eb-4b4f-bfc7-d36235fe9131 | Open vSwitch agent | compute1 | :-)   | True           | neutron-openvswitch-agent |
   +--------------------------------------+--------------------+----------+-------+----------------+---------------------------+