上一篇文章分享了控制节点的nova计算服务的安装方法，在实际生产环境中，计算节点通常会安装一些单独的节点提供服务，本文分享单独的nova计算节点的安装方法
---------------- 完美的分割线 -----------------
# 参考文章：
https://docs.openstack.org/install-guide/environment.html
https://docs.openstack.org/nova/rocky/install/compute-install-rdo.html
计算节点的配置方法与控制节点基本相同，只是在时间同步上需要连接控制节点，保证openstack集群内的服务器时间一致，否则会出现问题，需要注意
5.1.配置域名解析
1）配置主机名
# 主机名设置好就不能修改，否则会出问题，控制节点和计算节点配置相同，且都需要配置
hostname openstack02.zuiyoujie.com
hostname
echo "openstack02.zuiyoujie.com"> /etc/hostname
cat /etc/hostname
2）配置主机名解析
vim /etc/hosts
-----------------------------------
192.168.1.81 openstack01.zuiyoujie.com controller
192.168.1.82 openstack02.zuiyoujie.com compute02 block02 object02
-----------------------------------
# 依然是将简单的集群内角色名解析也配置上去
5.2.关闭防火墙和selinux
1）关闭iptables
# 在CentOS7上面是firewalld
systemctl stop firewalld.service
systemctl disable firewalld.service
systemctl status firewalld.service
2）关闭 selinux
setenforce 0
getenforce
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/sysconfig/selinux
grep SELINUX=disabled /etc/sysconfig/selinux
5.3.配置时间同步
1）在在计算节点配置时间同步服务
# 安装时间同步的软件包
yum install chrony -y
2）编辑配置文件确认有以下配置
vim /etc/chrony.conf
-------------------------------------
# 修改引用控制节点openstack01的IP
server 192.168.1.81 iburst
-------------------------------------
3）重启chronyd服务，并配置开机自启动
systemctl restart chronyd.service
systemctl status chronyd.service
systemctl enable chronyd.service
systemctl list-unit-files |grep chronyd.service
4）设置时区，首次同步时间
timedatectl set-timezone Asia/Shanghai
chronyc sources
timedatectl status
# 至此，时间同步配置完成
5.4.配置相关yum源
1）配置阿里云的base和epel源
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo mv /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.backup
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
2）安装openstack-rocky的仓库
# 很显然，计算节点也需要安装openstack的yum源
yum install centos-release-openstack-rocky -y
yum clean all
yum makecache
# 也可以手动创建OpenStack的阿里云yum源地址
vim /etc/yum.repos.d/CentOS-OpenStack-Rocky.repo
----------------------------------------
[centos-openstack-rocky]
name=CentOS-7 - OpenStack rocky
baseurl=http://mirrors.aliyun.com/centos/7/cloud/$basearch/openstack-rocky/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud [centos-openstack-rocky-test]
name=CentOS-7 - OpenStack rocky Testing
baseurl=http://mirrors.aliyun.com/centos/7/cloud/$basearch/openstack-rocky/
gpgcheck=0
enabled=0 [centos-openstack-rocky-debuginfo]
name=CentOS-7 - OpenStack rocky - Debug
baseurl=http://mirrors.aliyun.com/centos/7/cloud/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud [centos-openstack-rocky-source]
name=CentOS-7 - OpenStack rocky - Source
baseurl=http://mirrors.aliyun.com/centos/7/cloud/$basearch/openstack-rocky/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud [rdo-trunk-rocky-tested]
name=OpenStack rocky Trunk Tested
baseurl=http://mirrors.aliyun.com/centos/7/cloud/$basearch/rdo-trunk-rocky-tested/
gpgcheck=0
enabled=0
----------------------------------------
3）更新软件包
yum update -y
4）安装openstack客户端相关软件
yum install python-openstackclient openstack-selinux -y
# 至此，openstack计算节点的系统环境配置完成，虚拟机的话可以关机做下快照
5.5.安装nova计算节点相关软件包
1）计算节点安装nova软件包
cd /server/tools
yum install openstack-nova-compute python-openstackclient openstack-utils -y
2）快速修改配置文件（/etc/nova/nova.conf）
openstack-config --set /etc/nova/nova.conf DEFAULT my_ip 192.168.1.82
openstack-config --set /etc/nova/nova.conf DEFAULT use_neutron True
openstack-config --set /etc/nova/nova.conf DEFAULT firewall_driver nova.virt.firewall.NoopFirewallDriver
openstack-config --set /etc/nova/nova.conf DEFAULT enabled_apis osapi_compute,metadata
openstack-config --set /etc/nova/nova.conf DEFAULT transport_url rabbit://openstack:openstack@controller
openstack-config --set /etc/nova/nova.conf api auth_strategy keystone
openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_url http://controller:5000/v3
openstack-config --set /etc/nova/nova.conf keystone_authtoken memcached_servers controller:11211
openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_type password
openstack-config --set /etc/nova/nova.conf keystone_authtoken project_domain_name default
openstack-config --set /etc/nova/nova.conf keystone_authtoken user_domain_name default
openstack-config --set /etc/nova/nova.conf keystone_authtoken project_name service
openstack-config --set /etc/nova/nova.conf keystone_authtoken username nova
openstack-config --set /etc/nova/nova.conf keystone_authtoken password nova
openstack-config --set /etc/nova/nova.conf vnc enabled True
openstack-config --set /etc/nova/nova.conf vnc server_listen 0.0.0.0
openstack-config --set /etc/nova/nova.conf vnc server_proxyclient_address '$my_ip'
openstack-config --set /etc/nova/nova.conf vnc novncproxy_base_url http://controller:6080/vnc_auto.html
openstack-config --set /etc/nova/nova.conf glance api_servers http://controller: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://controller:5000/v3
openstack-config --set /etc/nova/nova.conf placement username placement
openstack-config --set /etc/nova/nova.conf placement password placement
# 服务器组件监听所有的 IP 地址，而代理组件仅仅监听计算节点管理网络接口的 IP 地址。
# 查看生效的配置：
egrep -v "^#|^$" /etc/nova/nova.conf
-------------------------------------------------------------
[root@openstack02 nova]# egrep -v "^#|^$" /etc/nova/nova.conf
[DEFAULT]
enabled_apis = osapi_compute,metadata
transport_url = rabbit://openstack:openstack@controller
my_ip = 192.168.1.82
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver
log_date_format=%Y-%m-%d %H:%M:%S
log_file=nova-compute.log
log_dir=/var/log/nova
[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://controller:9292
[guestfs]
[healthcheck]
[hyperv]
[ironic]
[key_manager]
[keystone]
[keystone_authtoken]
auth_url = http://controller:5000/v3
memcached_servers = controller:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = nova
[libvirt]
virt_type = qemu
[matchmaker_redis]
[metrics]
[mks]
[neutron]
[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://controller:5000/v3
username = placement
password = placement
[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 = 192.168.1.82
novncproxy_base_url = http://controller:6080/vnc_auto.html
[workarounds]
[wsgi]
[xenserver]
[xvp]
[zvm]
-------------------------------------------------------------
# ok
3）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 "^#|^$" /etc/nova/nova.conf|grep 'virt_type'
# 如果返回为其他值，表示计算节点支持硬件加速且不需要额外的配置，使用以下命令：
openstack-config --set /etc/nova/nova.conf libvirt virt_type kvm
egrep -v "^#|^$" /etc/nova/nova.conf|grep 'virt_type'
4）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
5）将计算节点增加到cell数据库
# 以下命令在控制节点操作：
cd /server/tools
source keystone-admin-pass.sh
# 检查确认数据库有新的计算节点
openstack compute service list --service nova-compute
# 实例演示：
[root@openstack01 tools]# openstack compute service list --service nova-compute
openstack compute service list
+----+--------------+---------------------------+------+---------+-------+----------------------------+
| ID | Binary | Host | Zone | Status | State | Updated At |
+----+--------------+---------------------------+------+---------+-------+----------------------------+
| 6 | nova-compute | openstack02.zuiyoujie.com | nova | enabled | up | 2018-10-29T12:02:40.000000 |
+----+--------------+---------------------------+------+---------+-------+----------------------------+
# 手动将新的计算节点添加到openstack集群
su -s /bin/sh -c "nova-manage cell_v2 discover_hosts --verbose" nova
# 实例演示：
[root@openstack01 tools]# 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 computes from cell 'cell1': c078477e-cb43-40c9-ad8b-a9fde183747d
Found 0 unmapped computes in cell: c078477e-cb43-40c9-ad8b-a9fde183747d
# 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
# 至此，计算节点安装完毕，接下来需要进行测试，检查nova节点的状态
5.6.在控制节点进行验证
# 参考文章：https://docs.openstack.org/nova/rocky/install/compute-install-rdo.html
1）应用管理员环境变量脚本
cd /server/tools
source keystone-admin-pass.sh
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
# 实例演示：
[root@openstack01 tools]# openstack compute service list
+----+------------------+---------------------------+----------+---------+-------+----------------------------+
| ID | Binary | Host | Zone | Status | State | Updated At |
+----+------------------+---------------------------+----------+---------+-------+----------------------------+
| 1 | nova-conductor | openstack01.zuiyoujie.com | internal | enabled | up | 2018-10-29T12:02:47.000000 |
| 2 | nova-scheduler | openstack01.zuiyoujie.com | internal | enabled | up | 2018-10-29T12:02:47.000000 |
| 5 | nova-consoleauth | openstack01.zuiyoujie.com | internal | enabled | up | 2018-10-29T12:02:42.000000 |
| 6 | nova-compute | openstack02.zuiyoujie.com | nova | enabled | up | 2018-10-29T12:02:40.000000 |
+----+------------------+---------------------------+----------+---------+-------+----------------------------+
#
3）在身份认证服务中列出API端点以验证其连接性
openstack catalog list
# 实例演示：
[root@openstack01 tools]# openstack catalog list
+-----------+-----------+-----------------------------------------+
| Name | Type | Endpoints |
+-----------+-----------+-----------------------------------------+
| keystone | identity | RegionOne |
| | | admin: http://controller:5000/v3/ |
| | | RegionOne |
| | | internal: http://controller:5000/v3/ |
| | | RegionOne |
| | | public: http://controller:5000/v3/ |
| | | |
| glance | image | RegionOne |
| | | admin: http://controller:9292 |
| | | RegionOne |
| | | internal: http://controller:9292 |
| | | RegionOne |
| | | public: http://controller:9292 |
| | | |
| nova | compute | RegionOne |
| | | internal: http://controller:8774/v2.1 |
| | | RegionOne |
| | | admin: http://controller:8774/v2.1 |
| | | RegionOne |
| | | public: http://controller:8774/v2.1 |
| | | |
| placement | placement | RegionOne |
| | | public: http://controller:8778 |
| | | RegionOne |
| | | admin: http://controller:8778 |
| | | RegionOne |
| | | internal: http://controller:8778 |
| | | |
+-----------+-----------+-----------------------------------------+
#
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
# 实例演示：
[root@openstack01 tools]# openstack image list
+--------------------------------------+--------+--------+
| ID | Name | Status |
+--------------------------------------+--------+--------+
| 78f5671b-fb2d-494f-8da7-25dbe425cad6 | cirros | active |
+--------------------------------------+--------+--------+
#
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 check
# 实例演示：
[root@openstack01 tools]# nova-status upgrade check
+-------------------------------+
| 升级检查结果 |
+-------------------------------+
| 检查: Cells v2 |
| 结果: 成功 |
| 详情: None |
+-------------------------------+
| 检查: Placement API |
| 结果: 成功 |
| 详情: None |
+-------------------------------+
| 检查: Resource Providers |
| 结果: 成功 |
| 详情: None |
+-------------------------------+
| 检查: Ironic Flavor Migration |
| 结果: 成功 |
| 详情: None |
+-------------------------------+
| 检查: API Service Version |
| 结果: 成功 |
| 详情: None |
+-------------------------------+
| 检查: Request Spec Migration |
| 结果: 成功 |
| 详情: None |
+-------------------------------+
# 至此，nova计算节点，安装完毕并添加到openstack集群中
========= 完毕，呵呵呵呵 ========