计算节点需要配置的主要是nova和neutron的客户端，控制节点在进行资源调度及配置时需要计算节点配合方能实现的，计算节点配置内容相对较少，实际生产环境中，需要配置的计算节点数量相当庞大，那么我们就需要借助ansible或者puppet这样的自动化工具进行了， 废话不多讲，直接进入配置状态。
compute节点基础配置
[root@compute1 ~]# lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 8
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 44
Model name: Westmere E56xx/L56xx/X56xx (Nehalem-C)
Stepping: 1
CPU MHz: 2400.084
BogoMIPS: 4800.16
Virtualization: VT-x
Hypervisor vendor: KVM
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 4096K
NUMA node0 CPU(s): 0-7
[root@compute1 ~]# free -h
total used free shared buff/cache available
Mem: 15G 142M 15G 8.3M 172M 15G
Swap: 0B 0B 0B
[root@compute1 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0 11:0 1 1024M 0 rom
vda 252:0 0 400G 0 disk
├─vda1 252:1 0 500M 0 part /boot
└─vda2 252:2 0 399.5G 0 part
├─centos-root 253:0 0 50G 0 lvm /
├─centos-swap 253:1 0 3.9G 0 lvm
└─centos-data 253:2 0 345.6G 0 lvm /data
[root@compute1 ~]# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.10.31 netmask 255.255.255.0 broadcast 192.168.10.255
inet6 fe80::5054:ff:fe18:bb1b prefixlen 64 scopeid 0x20<link>
ether 52:54:00:18:bb:1b txqueuelen 1000 (Ethernet)
RX packets 16842 bytes 1460696 (1.3 MiB)
RX errors 0 dropped 1416 overruns 0 frame 0
TX packets 747 bytes 199340 (194.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.0.31 netmask 255.255.0.0 broadcast 10.0.255.255
inet6 fe80::5054:ff:fe28:e0a7 prefixlen 64 scopeid 0x20<link>
ether 52:54:00:28:e0:a7 txqueuelen 1000 (Ethernet)
RX packets 16213 bytes 1360633 (1.2 MiB)
RX errors 0 dropped 1402 overruns 0 frame 0
TX packets 23 bytes 1562 (1.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 111.40.215.9 netmask 255.255.255.240 broadcast 111.40.215.15
inet6 fe80::5054:ff:fe28:e07a prefixlen 64 scopeid 0x20<link>
ether 52:54:00:28:e0:7a txqueuelen 1000 (Ethernet)
RX packets 40 bytes 2895 (2.8 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 24 bytes 1900 (1.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 841 bytes 44167 (43.1 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 841 bytes 44167 (43.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@compute1 ~]# getenforce
Disabled
[root@compute1 ~]# iptables -vnL
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
[root@compute1 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.10.10 controller
192.168.10.20 block
192.168.10.31 compute1
192.168.10.32 compute2
[root@compute1 ~]#
配置时间同步服务
[root@compute1 ~]# yum install -y chrony
[root@compute1 ~]# vim /etc/chrony.conf
[root@compute1 ~]# grep -v ^# /etc/chrony.conf | tr -s [[:space:]]
server controller iburst
stratumweight 0
driftfile /var/lib/chrony/drift
rtcsync
makestep 10 3
bindcmdaddress 127.0.0.1
bindcmdaddress ::1
keyfile /etc/chrony.keys
commandkey 1
generatecommandkey
noclientlog
logchange 0.5
logdir /var/log/chrony
[root@compute1 ~]# systemctl enable chronyd.service
[root@compute1 ~]# systemctl start chronyd.service
[root@compute1 ~]# chronyc sources
210 Number of sources = 1
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
^* controller 3 6 17 52 -15us[ -126us] +/- 138ms
[root@compute1 ~]#
安装 OpenStack 客户端
[root@compute1 ~]# yum install -y python-openstackclient
安装配置nova客户端
[root@compute1 ~]# yum install -y openstack-nova-compute
[root@compute1 ~]# cp /etc/nova/nova.conf{,.bak}
[root@compute1 ~]# vim /etc/nova/nova.conf
[root@compute1 ~]# grep -v ^# /etc/nova/nova.conf | tr -s [[:space:]]
[DEFAULT]
rpc_backend = rabbit
auth_strategy = keystone
my_ip = 192.168.10.31
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver
[api_database]
[barbican]
[cache]
[cells]
[cinder]
[conductor]
[cors]
[cors.subdomain]
[database]
[ephemeral_storage_encryption]
[glance]
api_servers = http://controller:9292
[guestfs]
[hyperv]
[p_w_picpath_file_url]
[ironic]
[keymgr]
[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 = NOVA_PASS
[libvirt]
[matchmaker_redis]
[metrics]
[neutron]
[osapi_v21]
[oslo_concurrency]
lock_path = /var/lib/nova/tmp
[oslo_messaging_amqp]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
rabbit_host = controller
rabbit_userid = openstack
rabbit_password = RABBIT_PASS
[oslo_middleware]
[oslo_policy]
[rdp]
[serial_console]
[spice]
[ssl]
[trusted_computing]
[upgrade_levels]
[vmware]
[vnc]
enabled = True
vncserver_listen = 0.0.0.0
vncserver_proxyclient_address = $my_ip
novncproxy_base_url = http://controller:6080/vnc_auto.html
[workarounds]
[xenserver]
[root@compute1 ~]# egrep -c '(vmx|svm)' /proc/cpuinfo //检验是否支持虚拟机的硬件加速
8
[root@compute1 ~]#
如果此处检验结果为0就请参考openstack环境准备一文中kvm虚拟机如何开启嵌套虚拟化栏目内容
[root@compute1 ~]# systemctl enable libvirtd.service openstack-nova-compute.service
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-compute.service to /usr/lib/systemd/system/openstack-nova-compute.service.
[root@compute1 ~]# systemctl start libvirtd.service openstack-nova-compute.service //计算节点上不会启动相应端口，只能通过服务状态进行查看
[root@compute1 ~]# systemctl status libvirtd.service openstack-nova-compute.service
● libvirtd.service - Virtualization daemon
Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled)
Active: active (running) since Sun 2017-07-16 19:10:26 CST; 12min ago
Docs: man:libvirtd(8)
http://libvirt.org
Main PID: 1002 (libvirtd)
CGroup: /system.slice/libvirtd.service
└─1002 /usr/sbin/libvirtd
Jul 16 19:10:26 compute1 systemd[1]: Starting Virtualization daemon...
Jul 16 19:10:26 compute1 systemd[1]: Started Virtualization daemon.
Jul 16 19:21:06 compute1 systemd[1]: Started Virtualization daemon.
● openstack-nova-compute.service - OpenStack Nova Compute Server
Loaded: loaded (/usr/lib/systemd/system/openstack-nova-compute.service; enabled; vendor preset: disabled)
Active: active (running) since Sun 2017-07-16 19:21:11 CST; 1min 21s ago
Main PID: 1269 (nova-compute)
CGroup: /system.slice/openstack-nova-compute.service
└─1269 /usr/bin/python2 /usr/bin/nova-compute
Jul 16 19:21:06 compute1 systemd[1]: Starting OpenStack Nova Compute Server...
Jul 16 19:21:11 compute1 nova-compute[1269]: /usr/lib/python2.7/site-packages/pkg_resources/__init__.py:187: RuntimeWarning: You have...
Jul 16 19:21:11 compute1 nova-compute[1269]: stacklevel=1,
Jul 16 19:21:11 compute1 systemd[1]: Started OpenStack Nova Compute Server.
Hint: Some lines were ellipsized, use -l to show in full.
[root@compute1 ~]#
前往controller节点验证计算服务配置
安装配置neutron客户端
控制节点网络配置完成后开始继续以下步骤
[root@compute1 ~]# yum install -y openstack-neutron-linuxbridge ebtables ipset
[root@compute1 ~]# cp /etc/neutron/neutron.conf{,.bak}
[root@compute1 ~]# vim /etc/neutron/neutron.conf
[root@compute1 ~]# grep -v ^# /etc/neutron/neutron.conf | tr -s [[:space:]]
[DEFAULT]
rpc_backend = rabbit
auth_strategy = keystone
[agent]
[cors]
[cors.subdomain]
[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 = NEUTRON_PASS
[matchmaker_redis]
[nova]
[oslo_concurrency]
lock_path = /var/lib/neutron/tmp
[oslo_messaging_amqp]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
rabbit_host = controller
rabbit_userid = openstack
rabbit_password = RABBIT_PASS
[oslo_policy]
[qos]
[quotas]
[ssl]
[root@compute1 ~]#
linuxbridge代理配置
[root@compute1 ~]# cp /etc/neutron/plugins/ml2/linuxbridge_agent.ini{,.bak}
[root@compute1 ~]# vim /etc/neutron/plugins/ml2/linuxbridge_agent.ini
[root@compute1 ~]# grep -v ^# /etc/neutron/plugins/ml2/linuxbridge_agent.ini | tr -s [[:space:]]
[DEFAULT]
[agent]
[linux_bridge]
physical_interface_mappings = provider:eth1
[securitygroup]
enable_security_group = True
firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
[vxlan]
enable_vxlan = True
local_ip = 192.168.10.31
l2_population = True
[root@compute1 ~]#
再次编辑nova配置文件，追加网络配置
[root@compute1 ~]# vim /etc/nova/nova.conf
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 = NEUTRON_PASS
重启计算节点服务，启用并启动linuxbridge代理服务
[root@compute1 ~]# systemctl restart openstack-nova-compute.service
[root@compute1 ~]# systemctl enable neutron-linuxbridge-agent.service
Created symlink from /etc/systemd/system/multi-user.target.wants/neutron-linuxbridge-agent.service to /usr/lib/systemd/system/neutron-linuxbridge-agent.service.
[root@compute1 ~]# systemctl start neutron-linuxbridge-agent.service
前往controller节点验证网络服务配置
来源：oschina
链接：https://my.oschina.net/u/4354530/blog/4341663