Openstack计算主机安装配置流程
1.环境配置
Hosts配置
修改/etc/hosts文件，增加wtcontroller、wtcompute1、wtcompute2：
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
172.16.10.100 wtcontroller
172.16.10.101 wtcompute1
172.16.10.102 wtcompute2修改本机hostname（以计算主机wtcompute1为例）
echo "wtcompute1"> /etc/hostname1.1修订yum源
本示例使用的时163的yum源：
CentOS7-Base-163.repo
将以上文件拷贝至/etc/yum.repos.d目录下
备份该目录下CentOS-Base.repo文件
修改CentOS7-Base-163.repo为CentOS-Base.repo
执行以下命令：
yum clean all #清除缓存
yum makecache #生成缓存
yum list #显示所有已经安装和可以安装的程序包关闭该服务，否者yum clean会卡死，属于系统bug
systemctl stop initial-setup-text 1.2防火墙操作
systemctl stop firewalld.service
systemctl disable firewalld.service
systemctl status firewalld.service1.3关闭selinux安全服务
setenforce 0
getenforce
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/sysconfig/selinux
grep SELINUX=disabled /etc/sysconfig/selinux1.4安装时间同步NTP服务
yum install chrony -y
vim /etc/chrony.conf
--参考网络配置，确保以下配置打开：
server 0.centos.pool.ntp.org iburst
server 1.centos.pool.ntp.org iburst
server 2.centos.pool.ntp.org iburst
server 3.centos.pool.ntp.org iburst
并修改以下配置，打开以下网段节点向控制节点校时：
allow 172.16.10.0/24重启服务并设置服务自启动
systemctl restart chronyd.service
systemctl status chronyd.service
systemctl enable chronyd.service
systemctl list-unit-files |grep chronyd.service修订时区
timedatectl set-timezone Asia/Shanghai
chronyc sources1.5安装openstack-更新yum
yum install centos-release-openstack-rocky -y
yum clean all
yum makecache1.6安装客户端软件
yum install python-openstackclient openstack-selinux -y2安装流程
2.1安装nova
yum install openstack-nova-compute python-openstackclient openstack-utils -y
快速修改配置文件（/etc/nova/nova.conf）
openstack-config --set /etc/nova/nova.conf DEFAULT my_ip 192.168.3.170
openstack-config --set /etc/nova/nova.conf DEFAULT use_neutron True
openstack-config --set /etc/nova/nova.conf DEFAULT firewall_driver nova.virt.firewall.NoopFirewallDriver
openstack-config --set /etc/nova/nova.conf DEFAULT enabled_apis osapi_compute,metadata
openstack-config --set /etc/nova/nova.conf DEFAULT transport_url rabbit://openstack:wtoe@123456@wtcontroller
openstack-config --set /etc/nova/nova.conf api auth_strategy keystone
openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_url http://wtcontroller:5000/v3
openstack-config --set /etc/nova/nova.conf keystone_authtoken memcached_servers wtcontroller:11211
openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_type password
openstack-config --set /etc/nova/nova.conf keystone_authtoken project_domain_name default
openstack-config --set /etc/nova/nova.conf keystone_authtoken user_domain_name default
openstack-config --set /etc/nova/nova.conf keystone_authtoken project_name service
openstack-config --set /etc/nova/nova.conf keystone_authtoken username nova
openstack-config --set /etc/nova/nova.conf keystone_authtoken password wtoe@123456
openstack-config --set /etc/nova/nova.conf vnc enabled True
openstack-config --set /etc/nova/nova.conf vnc server_listen 0.0.0.0
openstack-config --set /etc/nova/nova.conf vnc server_proxyclient_address '$my_ip'
openstack-config --set /etc/nova/nova.conf vnc novncproxy_base_url http://wtcontroller:6080/vnc_auto.html
openstack-config --set /etc/nova/nova.conf glance api_servers http://wtcontroller:9292
openstack-config --set /etc/nova/nova.conf oslo_concurrency lock_path /var/lib/nova/tmp
openstack-config --set /etc/nova/nova.conf placement region_name RegionOne
openstack-config --set /etc/nova/nova.conf placement project_domain_name Default
openstack-config --set /etc/nova/nova.conf placement project_name service
openstack-config --set /etc/nova/nova.conf placement auth_type password
openstack-config --set /etc/nova/nova.conf placement user_domain_name Default
openstack-config --set /etc/nova/nova.conf placement auth_url http://wtcontroller:5000/v3
openstack-config --set /etc/nova/nova.conf placement username placement
openstack-config --set /etc/nova/nova.conf placement password wtoe@123456检查修订有效性
egrep -v "^#|^$" /etc/nova/nova.conf配置文件 应如下（以节点ip为172.16.10.101为例）：
[DEFAULT]
my_ip = 172.16.10.101
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver
enabled_apis = osapi_compute,metadata
transport_url = rabbit://openstack:wtoe@123456@wtcontroller
instances_path=$state_path/instances
[api]
auth_strategy = keystone
[api_database]
[barbican]
[cache]
[cells]
[cinder]
[compute]
[conductor]
[console]
[consoleauth]
[cors]
[database]
[devices]
[ephemeral_storage_encryption]
[filter_scheduler]
[glance]
api_servers = http://wtcontroller:9292
[guestfs]
[healthcheck]
[hyperv]
[ironic]
[key_manager]
[keystone]
[keystone_authtoken]
auth_url = http://wtcontroller:5000/v3
memcached_servers = wtcontroller:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = wtoe@123456
[libvirt]
inject_password = true
inject_partition = -1
[matchmaker_redis]
[metrics]
[mks]
[neutron]
url = http://wtcontroller:9696
auth_url = http://wtcontroller:5000
auth_type = password
project_domain_name = default
user_domain_name = default
region_name = RegionOne
project_name = service
username = neutron
password = wtoe@123456
[notifications]
[osapi_v21]
[oslo_concurrency]
lock_path = /var/lib/nova/tmp
[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_messaging_zmq]
[oslo_middleware]
[oslo_policy]
[pci]
[placement]
region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://wtcontroller:5000/v3
username = placement
password = wtoe@123456
[placement_database]
[powervm]
[profiler]
[quota]
[rdp]
[remote_debug]
[scheduler]
[serial_console]
[service_user]
[spice]
[upgrade_levels]
[vault]
[vendordata_dynamic_auth]
[vmware]
[vnc]
enabled = True
server_listen = 0.0.0.0
server_proxyclient_address = $my_ip
novncproxy_base_url = http://wtcontroller:6080/vnc_auto.html
[workarounds]
[wsgi]
[xenserver]
[xvp]
[zvm]配置虚拟机的硬件加速
#首先确定您的计算节点是否支持虚拟机的硬件加速。
egrep -c '(vmx|svm)' /proc/cpuinfo#如果返回位0，表示计算节点不支持硬件加速，需要配置libvirt使用QEMU方式管理虚拟机，使用以下命令：
openstack-config --set /etc/nova/nova.conf libvirt virt_type qemu
egrep -v "^#|^$" /etc/nova/nova.conf|grep 'virt_type'#如果返回为其他值，表示计算节点支持硬件加速且不需要额外的配置，使用以下命令：
openstack-config --set /etc/nova/nova.conf libvirt virt_type kvm若后续在计算节点支持硬件加速的情况下依然出现创建实例报错的情况下，则需要进一步确认硬件加速是否被打开：
dmesg | grep kvm
如果有显示[ 3.692481] kvm: disabled by bios
则需要在bios中打开虚拟化选项 启动nova相关服务，并配置为开机自启动
#需要启动2个服务
systemctl start libvirtd.service openstack-nova-compute.service
systemctl status libvirtd.service openstack-nova-compute.service
systemctl enable libvirtd.service openstack-nova-compute.service
systemctl list-unit-files |grep libvirtd.service
systemctl list-unit-files |grep openstack-nova-compute.service 登陆到控制节点进行配置
#以下命令在控制节点操作：
. admin-openrc #检查确认数据库有新的计算节点
openstack compute service list --service nova-compute
su -s /bin/sh -c "nova-manage cell_v2 discover_hosts --verbose" nova#设置新创建节点自动注册的任务（已经添加到配置文件中）
[scheduler]
discover_hosts_in_cells_interval = 300在控制节点中进行验证
1）应用管理员环境变量脚本
. admin-openrc
2）列表查看安装的nova服务组件
#验证是否成功注册并启动了每个进程
openstack compute service list
3）在身份认证服务中列出API端点以验证其连接性
openstack catalog list
4）在镜像服务中列出已有镜像已检查镜像服务的连接性
openstack image list
5）检查nova各组件的状态
#检查placement API和cell服务是否正常工作
nova-status upgrade check2.2 Neutron安装
yum install openstack-neutron-openvswitch ebtables ipset -y (计算节点)
快速配置/etc/neutron/neutron.conf
openstack-config --set /etc/neutron/neutron.conf DEFAULT transport_url rabbit://openstack:wtoe@123456@wtcontroller
openstack-config --set /etc/neutron/neutron.conf DEFAULT auth_strategy keystone
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken www_authenticate_uri http://wtcontroller:5000
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken auth_url http://wtcontroller:5000
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken memcached_servers wtcontroller:11211
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken auth_type password
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken project_domain_name default
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken user_domain_name default
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken project_name service
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken username neutron
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken password wtoe@123456
openstack-config --set /etc/neutron/neutron.conf oslo_concurrency lock_path /var/lib/neutron/tmp查看生效的配置
egrep -v '(^$|^#)' /etc/neutron/neutron.conf快速配置/etc/neutron/plugins/ml2/openvswitch_agent.ini
openstack-config --set /etc/neutron/plugins/ml2/openvswitch_agent.ini agent tunnel_types vxlan
openstack-config --set /etc/neutron/plugins/ml2/openvswitch_agent.ini agent l2_population True
penstack-config --set /etc/neutron/plugins/ml2/openvswitch_agent.ini ovs local_ip 172.16.20.81
penstack-config --set /etc/neutron/plugins/ml2/openvswitch_agent.ini ovs tunnel_bridge br-tun
openstack-config --set /etc/neutron/plugins/ml2/openvswitch_agent.ini securitygroup firewall_driver neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
openstack-config --set /etc/neutron/plugins/ml2/openvswitch_agent.ini securitygroup enable_security_group True 查看生效的配置
egrep -v "^#|^$" /etc/neutron/plugins/ml2/openvswitch_agent.ini快速配置/etc/nova/nova.conf
openstack-config --set /etc/nova/nova.conf neutron url http://wtcontroller:9696
openstack-config --set /etc/nova/nova.conf neutron auth_url http://wtcontroller:5000
openstack-config --set /etc/nova/nova.conf neutron auth_type password
openstack-config --set /etc/nova/nova.conf neutron project_domain_name default
openstack-config --set /etc/nova/nova.conf neutron user_domain_name default
openstack-config --set /etc/nova/nova.conf neutron region_name RegionOne
openstack-config --set /etc/nova/nova.conf neutron project_name service
openstack-config --set /etc/nova/nova.conf neutron username neutron
openstack-config --set /etc/nova/nova.conf neutron password wtoe@123456 #查看生效的配置
egrep -v '(^$|^#)' /etc/nova/nova.conf重启计算节点
systemctl restart openstack-nova-compute.service
systemctl status openstack-nova-compute.service 启动neutron网络组件，并配置开机自启动
#需要启动1个服务，网桥代理
systemctl restart neutron-openvswitch-agent.service
systemctl status neutron-openvswitch-agent.service
systemctl enable neutron-openvswitch-agent.service
systemctl list-unit-files |grep neutron* |grep enabled在控制节点检查确认neutron服务安装成功
获取管理权限
source admin-openrc列表查看加载的网络插件
openstack extension list --network或者使用另一种方法：显示简版信息
neutron ext-list查看网络代理列表
openstack network agent list#正常情况下：控制节点有3个服务，计算节点有1个服务，如果不是，需要检查计算节点配置：网卡名称，IP地址，端口，密码等要素