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OpenStack Havana - Add Compute Nodes2013/10/23
 
Add Compute Nodes to run more instanes.
The example below shows to configure a Compute Node on another Computer from Control Node.
[1]
Install KVM Hypervisor first which needs on Compute Node. It's unnecessarry to set Bridge networking on the section [2] of the link.
[2] Install Nova-Compute and Nova-Network.
# install from EPEL OpenStack, EPEL

[root@node01 ~]#
yum --enablerepo=openstack-havana,epel -y install openstack-nova-compute openstack-nova-network
[3] Configure Nova
[root@node01 ~]#
vi /etc/nova/nova.conf
# line 65: uncomment and specify hostname

host=
node01.srv.world
# line 68: uncomment (if not need)

use_ipv6=false
# line 100: uncomment

state_path=/var/lib/nova
# line 191: uncomment

enabled_apis=ec2,osapi_compute,metadata
# line 197: uncomment

ec2_listen=0.0.0.0
# line 200: uncomment

ec2_listen_port=8773
# line 206: uncomment

osapi_compute_listen=0.0.0.0
# line 209: uncomment

osapi_compute_listen_port=8774
# line 237: uncomment

network_manager=nova.network.manager.FlatDHCPManager
# line 274: uncomment

rootwrap_config=/etc/nova/rootwrap.conf
# line 287: uncomment

api_paste_config=api-paste.ini
# line 320: uncomment and change

auth_strategy=
keystone
# line 909: uncomment and specify Glance server

glance_host=
10.0.0.30
# line 912: uncomment

glance_port=9292
# line 916: uncomment

glance_protocol=http
# line 921: uncomment

glance_api_servers=$glance_host:$glance_port
# line 980: uncomment

network_api_class=nova.network.api.API
# line 988: uncomment

network_driver=nova.network.linux_net
# line 1060: uncomment

dhcpbridge_flagfile=/etc/nova/nova.conf
# line 1066: uncomment and specify nic for public

public_interface=
eth0
# line 1072: uncomment

dhcpbridge=/usr/bin/nova-dhcpbridge
# line 1101: uncomment

linuxnet_interface_driver=nova.network.linux_net.LinuxBridgeInterfaceDriver
# line 1146: uncomment and specify any name for bridge

flat_network_bridge=
br100
# line 1157: uncomment and specify nic for flat DHCP bridge

flat_interface=
lo
# line 1308: uncomment

security_group_api=nova
# line 1434: uncomment

log_dir=/var/log/nova
# line 1448: uncomment and specify Memcached server

memcached_servers=
10.0.0.30:11211
# line 1457: uncomment and add

notification_driver=
nova.openstack.common.notifier.rpc_notifier
# line 1491: uncomment

rpc_backend=nova.openstack.common.rpc.impl_qpid
# line 1596: uncomment and specify Qpid server

qpid_hostname=
10.0.0.30
# line 1599: uncomment

qpid_port=5672
# line 1801: uncomment

scheduler_default_filters=RetryFilter,AvailabilityZoneFilter,RamFilter,
ComputeFilter,ComputeCapabilitiesFilter,ImagePropertiesFilter
# line 1919: uncomment

compute_driver=libvirt.LibvirtDriver
# line 1940: uncomment

firewall_driver=nova.virt.libvirt.firewall.IptablesFirewallDriver
# line 1970: uncomment

libvirt_type=kvm
# line 2011: uncomment

libvirt_vif_driver=nova.virt.libvirt.vif.LibvirtGenericVIFDriver
# line 2147: uncomment

libvirt_use_virtio_for_bridges=true
# line 2855: uncomment and specify values for Nova DB

connection=mysql://
nova:password@10.0.0.30/nova
# line 3377: uncomment and specify tenant name

admin_tenant_name=
service
# line 3380: uncomment and specify admin user

admin_user=
nova
# line 3383: uncomment and specify admin password

admin_password=
servicepassword
# line 3386: uncomment and specify Keystone server

auth_host=
10.0.0.30
# line 3389: uncomment

auth_port=35357
# line 3392: uncomment

auth_protocol=http
# line 3395: uncomment

auth_version=v2.0
# line 3400: uncomment

signing_dir=/var/lib/nova/keystone-signing
[root@node01 ~]#
for service in compute network; do
/etc/rc.d/init.d/openstack-nova-$service start
chkconfig openstack-nova-$service on
done 

Starting openstack-nova-compute:                           [  OK  ]
Starting openstack-nova-network:                           [  OK  ]
[4] Make sure services are working normally. It's OK if the status of services are like follows.
[root@node01 ~]#
nova-manage service list 

Binary           Host                       Zone             Status     State Updated_At
nova-scheduler   dlp.srv.world           internal         enabled    :-)   2013-10-23 13:08:17
nova-network     dlp.srv.world           internal         enabled    :-)   2013-10-23 13:08:22
nova-cert        dlp.srv.world           internal         enabled    :-)   2013-10-23 13:08:17
nova-consoleauth dlp.srv.world           internal         enabled    :-)   2013-10-23 13:08:17
nova-conductor   dlp.srv.world           internal         enabled    :-)   2013-10-23 13:08:17
nova-compute     dlp.srv.world           nova             enabled    :-)   2013-10-23 13:08:19
nova-compute     node01.srv.world        nova             enabled    :-)   2013-10-23 13:08:13
nova-network     node01.srv.world        internal         enabled    :-)   2013-10-23 13:08:03
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