Ubuntu 14.04
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OpenStack Liberty : Add Compute Nodes
2015/12/27
 
Add Compute Nodes to run more instances.
[1]
Install KVM Hypervisor first which needs on Compute Node.
It's unnecessarry to set Bridge networking on the section [3] of the link.
[2] Enable Openstack Liberty's Repository and install Nova-Compute.
root@node01:~#
apt-get -y install nova-api-metadata nova-compute-kvm nova-novncproxy python-novaclient
[3] Configure Nova.
root@node01:~#
mv /etc/nova/nova.conf /etc/nova/nova.conf.org

root@node01:~#
vi /etc/nova/nova.conf
# create new

[DEFAULT]
# own IP address

my_ip = 10.0.0.51
# add if it's not need IPv6

use_ipv6 = false
state_path = /var/lib/nova
enabled_apis = ec2,osapi_compute,metadata
osapi_compute_listen = 0.0.0.0
osapi_compute_listen_port = 8774
rootwrap_config = /etc/nova/rootwrap.conf
api_paste_config = /etc/nova/api-paste.ini
auth_strategy = keystone
log_dir = /var/log/nova
# specify Memcached server

memcached_servers = 10.0.0.30:11211
scheduler_driver = nova.scheduler.filter_scheduler.FilterScheduler
notification_driver = nova.openstack.common.notifier.rpc_notifier
rpc_backend = rabbit
# enable VNC

[vnc]
enabled = True
vncserver_listen = 0.0.0.0
vncserver_proxyclient_address = $my_ip
novncproxy_base_url = http://10.0.0.30:6080/vnc_auto.html
# Glance server connection info

[glance]
host = 10.0.0.30
port = 9292
protocol = http
[oslo_concurrency]
lock_path = /var/lib/nova/tmp
# RabbitMQ server connection info

[oslo_messaging_rabbit]
rabbit_host = 10.0.0.30
rabbit_port = 5672
rabbit_userid = openstack
rabbit_password = password
# MariaDB server connection info

[database]
connection = mysql+pymysql://nova:password@10.0.0.30/nova
# Keystone server connection info

[keystone_authtoken]
auth_uri = http://10.0.0.30:5000
auth_url = http://10.0.0.30:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = service
username = nova
password = servicepassword
root@node01:~#
chmod 640 /etc/nova/nova.conf

root@node01:~#
chgrp nova /etc/nova/nova.conf

[4] Configure Networking. The follows is for the case you use legacy nova-network function.
But if you use Neutron Networking function, Refer to here to configure it.
Anyway, legacy nova-network function is officially not recommended.
root@node01:~#
apt-get -y install nova-network

root@node01:~#
echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf

root@node01:~#
sysctl -p

net.ipv4.ip_forward = 1
root@node01:~#
vi /etc/nova/nova.conf
# add follows in [DEFAULT] section

dhcpbridge_flagfile = /etc/nova/nova.conf
dhcpbridge = /usr/bin/nova-dhcpbridge
force_dhcp_release = True
libvirt_use_virtio_for_bridges = True
network_driver = nova.network.linux_net
libvirt_vif_driver = nova.virt.libvirt.vif.LibvirtGenericVIFDriver
linuxnet_interface_driver = nova.network.linux_net.LinuxBridgeInterfaceDriver
firewall_driver = nova.virt.libvirt.firewall.IptablesFirewallDriver
network_api_class = nova.network.api.API
security_group_api = nova
network_manager = nova.network.manager.FlatDHCPManager
network_size = 254
allow_same_net_traffic = False
multi_host = True
send_arp_for_ha = True
share_dhcp_address = True
force_dhcp_release = True
# Nova API server's hostname or IP address

metadata_host = 10.0.0.30
# specify nic for public

public_interface = eth0
# specify any name for bridge

flat_network_bridge = br100
# specify nic for flat DHCP bridge

flat_interface = eth1
[5] Start Nova Service.
If you don't use legacy nova-network, exclude the word "network" below.
root@node01:~#
for service in api-metadata compute network; do
initctl restart nova-$service
done
# show status

root@node01:~#
nova-manage service list

Binary           Host                      Zone             Status     State Updated_At
nova-consoleauth dlp                       internal         enabled    :-)   2015-12-30 16:04:16
nova-conductor   dlp                       internal         enabled    :-)   2015-12-30 16:04:16
nova-scheduler   dlp                       internal         enabled    :-)   2015-12-30 16:04:16
nova-cert        dlp                       internal         enabled    :-)   2015-12-30 16:04:17
nova-compute     node01.srv.world       nova             enabled    :-)   2015-12-30 16:04:13
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