一、前期准备
1. 安装和配置NTP客户端
- 安装chrony软件包
~]# yum install chrony -y - 编辑chrony配置文件
~]# vim /etc/chrony.conf
# 注销之前所有的server ... iburst行
server controller iburst
- 启动chronyd服务，并配置开机自动启动
~]# systemctl enable chronyd.service
~]# systemctl start chronyd.service - 验证操作
~]# chronyc sources
210 Number of sources = 1
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
^* controller 3 6 17 0 +356ns[+5471ns] +/- 4476us
要确保*标出现，才代表与时间服务器同步完成。
2. 软件包准备
- 安装OpenStack Pike Repository
~]# yum install centos-release-openstack-pike -y - 升级软件包
~]# yum upgrade - 安装openstack客户端软件包
~]# yum install python-openstackclient -y - 安装openstack-selinux软件包
~]# yum install openstack-selinux -y
二、Nova的安装和配置
1. 软件包安装
~]# yum -y install openstack-nova-compute
2. 编辑配置文件/etc/nova/nova.conf
~]# cp /etc/nova/nova.conf{,.bak}
~]# vim /etc/nova/nova.conf
[DEFAULT]
# ...
enabled_apis = osapi_compute,metadata
transport_url = rabbit://openstack:pike@controller
my_ip = 10.6.10.2
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver
[api]
# ...
auth_strategy = keystone
[keystone_authtoken]
# ...
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = pike
[vnc]
# ...
enabled = True
vncserver_listen = 0.0.0.0
vncserver_proxyclient_address = $my_ip
novncproxy_base_url = http://controller:6080/vnc_auto.html
[glance]
# ...
api_servers = http://controller:9292
[oslo_concurrency]
# ...
lock_path = /var/lib/nova/tmp
[placement]
# ...
os_region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://controller:35357/v3
username = placement
password = pike
3. 完成安装
(1) 验证compute1主机的宿主机是否支持硬件加速
当返回值大于等于1时，代表支持，无须额外操作；
当返回值等于0时，代表不支持，需要修改/etc/nova/nova.conf配置文件中[libvirt]段为如下字段：
[libvirt]
# ...
virt_type = qemu
此次搭建得到结果如下，无须额外操作。
~]# egrep -c '(vmx|svm)' /proc/cpuinfo
32
(2) 启动libvirtd.service和openstack-nova-compute.service服务，并配置其开机自动启动
~]# systemctl enable libvirtd.service openstack-nova-compute.service
~]# systemctl start libvirtd.service openstack-nova-compute.service
4. 将Compute节点添加到cell数据库中
重要：
一下这个环节的操作要在Controller节点上执行，不是Compute1节点！！！！！
(1) 读取admin-openrc环境变量配置文件，启用admin的CLI，去确认MariaDB中存在compute主机
~]# . admin-openrc
~]# openstack compute service list --service nova-compute
+----+--------------+----------+------+---------+-------+----------------------------+
| ID | Binary | Host | Zone | Status | State | Updated At |
+----+--------------+----------+------+---------+-------+----------------------------+
| 6 | nova-compute | compute1 | nova | enabled | up | 2018-02-08T06:07:19.000000 |
+----+--------------+----------+------+---------+-------+----------------------------+
(2) 发现compute主机
~]# su -s /bin/sh -c "nova-manage cell_v2 discover_hosts --verbose" nova
Found 2 cell mappings.
Skipping cell0 since it does not contain hosts.
Getting compute nodes from cell 'cell1': c645de34-d50f-4134-b50d-15855cd0e105
Found 1 unmapped computes in cell: c645de34-d50f-4134-b50d-15855cd0e105
Checking host mapping for compute host 'compute1': 5d7e8f0e-1239-4a61-a2a5-9c71aabd9ec4
Creating host mapping for compute host 'compute1': 5d7e8f0e-1239-4a61-a2a5-9c71aabd9ec4
注意
当后续要再添加compute节点时，必须在controller节点上执行~]# nova-manage cell_v2 discover_hosts以便来注册新的compute节点。或者直接在配置文件/etc/nova/nova.conf中修改适当的发现周期时间，例如：
[scheduler]
discover_hosts_in_cells_interval = 300
三、Neutron的安装和配置
1. 安装软件包
~]# yum install openstack-neutron-linuxbridge ebtables ipset -y
2. 配置通用组件
~]# cp /etc/neutron/neutron.conf{,.bak}
~]# vim /etc/neutron/neutron.conf
# 在[database]部分，注释掉所有connection的行，因为compute节点不需要直接与数据库沟通
[DEFAULT]
# ...
transport_url = rabbit://openstack:pike@controller
auth_strategy = keystone
[keystone_authtoken]
# ...
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = neutron
password = pike
[oslo_concurrency]
# ...
lock_path = /var/lib/neutron/tmp
注意：
一定要确保[keystone_authtoken]部分已经注释掉所有其他配置项！
验证配置
~]# grep "^[^#]" /etc/neutron/neutron.conf
[DEFAULT]
transport_url = rabbit://openstack:pike@controller
auth_strategy = keystone
[agent]
[cors]
[database]
[keystone_authtoken]
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = neutron
password = pike
[matchmaker_redis]
[nova]
[oslo_concurrency]
lock_path = /var/lib/neutron/tmp
[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_messaging_zmq]
[oslo_middleware]
[oslo_policy]
[quotas]
[ssl]
3. 配置Linux网桥代理
~]# cp /etc/neutron/plugins/ml2/linuxbridge_agent.ini{,.bak}
~]# vim /etc/neutron/plugins/ml2/linuxbridge_agent.ini
[linux_bridge]
physical_interface_mappings = provider:ens192
# physical_interface_mappings = provider:PROVIDER_INTERFACE_NAME
# 其中，PROVIDER_INTERFACE_NAME替换为compute节点的外网网卡名称，ens192
[vxlan]
enable_vxlan = true
local_ip = 10.6.10.2
l2_population = true
# local_ip = OVERLAY_INTERFACE_IP_ADDRESS
# 其中，OVERLAY_INTERFACE_IP_ADDRESS替换为compute节点的管理网卡IP地址，10.6.10.2
[securitygroup]
# ...
enable_security_group = true
firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
验证配置
~]# grep "^[^#]" /etc/neutron/plugins/ml2/linuxbridge_agent.ini
[DEFAULT]
[agent]
[linux_bridge]
physical_interface_mappings = provider:ens192
[securitygroup]
enable_security_group = true
firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
[vxlan]
enable_vxlan = true
local_ip = 10.6.10.2
l2_population = true
4. 配置compute service去使用networking service
~]# cp /etc/nova/nova.conf{,.neutron.bak}
~]# vim /etc/nova/nova.conf
[neutron]
# ...
url = http://controller:9696
auth_url = http://controller:35357
auth_type = password
project_domain_name = default
user_domain_name = default
region_name = RegionOne
project_name = service
username = neutron
password = pike
5. 完成安装
- 重新启动openstack-nova-compute服务
~]# ~]# systemctl restart openstack-nova-compute.service - 启动neutron-linuxbridge-agent服务，并配置其开机自动启动
~]# systemctl enable neutron-linuxbridge-agent.service
~]# systemctl start neutron-linuxbridge-agent.service
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