CentOS6.2下一步一步源代码安装OpenStack（五）nova配置、运行、测试
1.配置
1.1复制默认配置文件：
$ cd ~/install/nova-2012.1
$ sudo cp -R etc/nova /etc/nova
$ sudo chown -R ugyn:ugyn /etc/nova
1.2创建/etc/nova/nova.conf
将http://docs.openstack.org/trunk/openstack-compute/install/content/nova-conf-file.html配置内容复制进来并修改相关选项
我的nova.conf内容如下：
# LOGS/STATE
verbose=True
# AUTHENTICATION
auth_strategy=keystone
# SCHEDULER
compute_scheduler_driver=nova.scheduler.filter_scheduler.FilterScheduler
# VOLUMES
volume_group=nova-volumes
volume_name_template=volume-%08x
iscsi_helper=tgtadm
# DATABASE
sql_connection=mysql://nova:nova@10.17.23.95/nova
# COMPUTE
libvirt_type=kvm
connection_type=libvirt
instances_path=/home/ugyn/instances
instance_name_template=instance-%08x
api_paste_config=/etc/nova/api-paste.ini
allow_resize_to_same_host=True
# APIS
osapi_compute_extension=nova.api.openstack.compute.contrib.standard_extensions
ec2_dmz_host=10.17.23.95
s3_host=10.17.23.95
# RABBITMQ
rabbit_host=10.17.23.95
rabbit_userid=guest
rabbit_password=service123
# GLANCE
image_service=nova.image.glance.GlanceImageService
glance_api_servers=10.17.23.95:9292
# NETWORK
network_manager=nova.network.manager.FlatDHCPManager
force_dhcp_release=True
dhcpbridge_flagfile=/etc/nova/nova.conf
firewall_driver=nova.virt.libvirt.firewall.IptablesFirewallDriver
my_ip=10.17.23.95
public_interface=br100
vlan_interface=eth0
flat_network_bridge=br100
flat_interface=eth0
fixed_range=10.0.0.0/24
# NOVNC CONSOLE
novncproxy_base_url=http://10.17.23.95:6080/vnc_auto.html
xvpvncproxy_base_url=http://10.17.23.95:6081/console
vncserver_proxyclient_address=127.0.0.1
vncserver_listen=127.0.0.1
bindir=/usr/bin
除了一般的修改外，我还加了两个参数instances_path我把这个设到我的个人文件夹来了，bindir这个很重要，否则启动nova-network时会有问题。
创建该文件夹：$ mkdir ~/instances
nova默认采用rabbitmq作为通信服务器，如果要用qpid，请把RABBITMQ相关选项替换成如下：
#QPID
rpc_backend=nova.rpc.impl_qpid
qpid的其它选项我这里保持默认，如果要设置请参考示例配置文件以下内容：
###### (IntOpt) Seconds between connection keepalive heartbeats# qpid_heartbeat=5###### (StrOpt) Qpid broker hostname# qpid_hostname="localhost"###### (StrOpt) Password for qpid connection# qpid_password=""###### (StrOpt) Qpid broker port# qpid_port="5672"###### (StrOpt) Transport to use, either 'tcp' or 'ssl'# qpid_protocol="tcp"###### (BoolOpt) Automatically reconnect# qpid_reconnect=true###### (IntOpt) Equivalent to setting max and min to the same value# qpid_reconnect_interval=0###### (IntOpt) Maximum seconds between reconnection attempts# qpid_reconnect_interval_max=0###### (IntOpt) Minimum seconds between reconnection attempts# qpid_reconnect_interval_min=0###### (IntOpt) Max reconnections before giving up# qpid_reconnect_limit=0###### (IntOpt) Reconnection timeout in seconds# qpid_reconnect_timeout=0###### (StrOpt) Space separated list of SASL mechanisms to use for auth# qpid_sasl_mechanisms=""###### (BoolOpt) Disable Nagle algorithm# qpid_tcp_nodelay=true###### (StrOpt) Username for qpid connection# qpid_username=""
1.3配置nova的keystone认证：
$ vim /etc/nova/api-paste.ini
修改：
admin_tenant_name = %SERVICE_TENANT_NAME%
admin_user = %SERVICE_USER%
admin_password = %SERVICE_PASSWORD%
为：
admin_tenant_name = service
admin_user = nova
admin_password = service123
1.4创建存储卷：
$ mkdir /home/ugyn/novaimages
$ dd if=/dev/zero of=/home/ugyn/novaimages/nova-volumes.img bs=1M seek=100k count=0
$ sudo vgcreate nova-volumes $(sudo losetup --show -f /home/ugyn/novaimages/nova-volumes.img)
1.5初始化数据库：
$ nova-manage db sync
1.6解决启动nova-network、nova-volume出现timeout错误：
https://lists.launchpad.net/openstack/msg02565.html
2运行
先在每个新开终端运行nova-api、nova-cert、nova-compute、nova-network、nova-objectstore、nova-scheluder、nova-volume查看各程序是否正常运行，确定正常后可以关闭各程序，通过nova-all启动以上各个程序。
3.测试
3.1查看各服务状态：
$ nova-manage service list
2012-04-20 17:11:26 DEBUG nova.utils backend <module 'nova.db.sqlalchemy.api' from
'/usr/lib/python2.6/site-packages/nova-2012.1-py2.6.egg/nova/db/sqlalchemy/api.pyc'> from (pid=1095) __get_backend /usr/lib/python2.6/site-
packages/nova-2012.1-py2.6.egg/nova/utils.py:658
2012-04-20 17:11:26 WARNING nova.utils /usr/lib64/python2.6/site-
packages/sqlalchemy/pool.py:681: SADeprecationWarning: The 'listeners' argument to Pool (and create_engine()) is deprecated.Use event.listen
().
Pool.__init__(self, creator, **kw)
2012-04-20 17:11:26 WARNING nova.utils /usr/lib64/python2.6/site-
packages/sqlalchemy/pool.py:159: SADeprecationWarning: Pool.add_listener is deprecated.Use event.listen()
self.add_listener(l)
Binary Host Zone Status State Updated_At
nova-cert cc.sigsit.org nova enabled :-) 2012-04-20 09:11:24
nova-compute cc.sigsit.org nova enabled :-) 2012-04-20 09:11:22
nova-network cc.sigsit.org nova enabled :-) 2012-04-20 09:11:23
nova-scheduler cc.sigsit.org nova enabled :-) 2012-04-20 09:11:23
nova-volume cc.sigsit.org nova enabled :-) 2012-04-20 09:11:21
注意：:-)表示正在运行；XXX表示服务启动时出错已停止；如果服务从未正常启动过则不会出现在这里
3.2创建网络：
$ nova-manage network create private 10.0.0.0/24 1 256 --bridge=br100
3.3查看信息：
更多信息请运行nova help查看相关命令
3.4启动一个实例：
创建密钥：
ugyn@cc nova-2012.1]$ cd
请先关闭selinux，否则无法创建密钥，方法如下：
$ sudo vim /etc/sysconfig/selinux
修改：SELINUX=disabled
不想重启执行以下命令：
$ sudo setenforce 0
$ nova keypair-add mykey > oskey.priv
$ chmod 600 oskey.priv
创建实例：
$ nova boot myserver --flavor 1 --key_name mykey --image tty-linux
可通过nova show myserver或nova list 查看实例状态，当实例状态为active时可通过ssh连接了。
通过ssh登录实例：
$ ssh -i oskey.priv root@10.0.0.2
查看实例日志：
$ nova console-log myserver
删除实例：
$ nova delete myserver
触认是否删除：
$ nova list
页:
[1]