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OpenStack Juno : Configure Nova
2015/01/08
 
Install and Configure OpenStack Compute Service (Nova).
[1] Install Nova.
# install from RDO, EPEL

[root@dlp ~]#
yum --enablerepo=openstack-juno,epel -y install openstack-nova
[2] Add a User and Database on MariaDB for Nova.
[root@dlp ~]#
mysql -u root -p

Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 18
Server version: 5.5.40-MariaDB-wsrep MariaDB Server, wsrep_25.11.r4026

Copyright (c) 2000, 2014, Oracle, Monty Program Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]>
create database nova;

Query OK, 1 row affected (0.00 sec)
MariaDB [(none)]>
grant all privileges on nova.* to nova@'localhost' identified by 'password';

Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
grant all privileges on nova.* to nova@'%' identified by 'password';

Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
flush privileges;

Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
exit

Bye
[3] Configure Nova.
[root@dlp ~]#
mv /etc/nova/nova.conf /etc/nova/nova.conf.org

[root@dlp ~]#
vi /etc/nova/nova.conf
# create new

[DEFAULT]
# RabbitMQ server's hostname or IP

rabbit_host=10.0.0.30
rabbit_port=5672
# RabbitMQ server's User for auth

rabbit_userid=guest
# RabbitMQ server's password of the User above

rabbit_password=password
notification_driver=nova.openstack.common.notifier.rpc_notifier
rpc_backend=rabbit
# define own IP

my_ip=10.0.0.30
# add it if 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=api-paste.ini
auth_strategy=keystone
# Glance server's hostname or IP

glance_host=10.0.0.30
glance_port=9292
glance_protocol=http
lock_path=/var/lib/nova/tmp
log_dir=/var/log/nova
# Memcached server's hostname or IP

memcached_servers=10.0.0.30:11211
scheduler_driver=nova.scheduler.filter_scheduler.FilterScheduler
[database]
# connection info for MariaDB

connection=mysql://nova:password@10.0.0.30/nova
[keystone_authtoken]
# Keystone server's hostname or IP

auth_host=10.0.0.30
auth_port=35357
auth_protocol=http
auth_version=v2.0
admin_user=nova
# Nova user's password added in Keystone

admin_password=servicepassword
admin_tenant_name=service
signing_dir=/var/lib/nova/keystone-signing
[root@dlp ~]#
chmod 640 /etc/nova/nova.conf

[root@dlp ~]#
chgrp nova /etc/nova/nova.conf

[3] 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@dlp ~]#
vi /etc/nova/nova.conf
# add follows in [DEFAULT] section

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
# specify nic for public

public_interface=eno16777736
# specify any name you like for bridge

flat_network_bridge=br100
# specify nic for flat DHCP bridge

flat_interface=dummy0
# add a dummy interface which is for the flat DHCP bridge

[root@dlp ~]#
cat > /etc/sysconfig/network-scripts/ifcfg-dummy0 <<EOF
DEVICE=dummy0
BOOTPROTO=none
ONBOOT=yes
TYPE=Ethernet
NM_CONTROLLED=no
EOF
[root@dlp ~]#
echo "alias dummy0 dummy" > /etc/modprobe.d/dummy.conf

[root@dlp ~]#
ifup dummy0

[4] Start Nova Service.
If you don't use legacy nova-network, exclude the word "network" below.
[root@dlp ~]#
nova-manage db sync

[root@dlp ~]#
for service in api objectstore conductor scheduler cert consoleauth compute network; do
systemctl start openstack-nova-$service
systemctl enable openstack-nova-$service
done
# display status

[root@dlp ~]#
nova-manage service list

Binary           Host                  Zone             Status     State Updated_At
nova-conductor   dlp.srv.world      internal         enabled    :-)   2015-01-08 12:57:24
nova-scheduler   dlp.srv.world      internal         enabled    :-)   2015-01-08 12:57:15
nova-cert        dlp.srv.world      internal         enabled    :-)   2015-01-08 12:57:16
nova-consoleauth dlp.srv.world      internal         enabled    :-)   2015-01-08 12:57:17
nova-compute     dlp.srv.world      nova             enabled    :-)   2015-01-08 12:57:19
nova-network     dlp.srv.world      internal         enabled    :-)   2015-01-08 12:57:19
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