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CentOS7.3部署OpenStack-Ocata版本手记（计算节点） - 未完待续_openstack-nova-compute.service holdoff time over,

作者：繁依Fanyi0 | 2024-03-31 03:32:50

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openstack-nova-compute.service holdoff time over, scheduling restart.

一、环境准备

1. 网络环境

节点名称IP域名
控制节点192.168.159.34node1.example.local
计算节点192.168.159.35node2.example.local

2. NTP服务

NTP服务器：192.168.159.254 admin.example.local
NTP服务器配置可参考：http://blog.csdn.net/shion0305/article/details/55254291

在计算节点上添加crond定时同步NTP服务器

# crontab -e
#每5分钟同步一次NTP服务器
*/5 * * * * /usr/sbin/ntpdate admin.example.local > /dev/null 2>&1
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升级该节点所有的rpm包到最新版本

# yum upgrade -y
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安装OpenStack client

# yum install -y python-openstackclient
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安装OpenStack selinux，RHEL和CentOS默认开启selinux，这个包可以自动管理openstack服务的安全规则，如果不想安装这个包，则需要手动关闭selinux功能。

# yum install -y openstack-selinux
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#如果不想安装openstack-selinux，则需要手动关闭selinux
# vim /etc/selinux/config
#..
SELINUX=disabled
#修改完毕后需要重启
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二、配置安装计算节点

1. 安装软件包

# yum install -y openstack-nova-compute
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2. 编辑配置文件/etc/nova/nova.conf

[DEFAULT]
# ...
#此处需要填写控制节点的设备IP地址
my_ip = 192.168.159.34
enabled_apis = osapi_compute,metadata
transport_url = rabbit://openstack:RABBIT_PASS@192.168.159.34
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver

[api]
# ...
auth_strategy = keystone

[keystone_authtoken]
# ...
auth_uri = http://192.168.159.34:5000
auth_url = http://192.168.159.34:35357
memcached_servers = 192.168.159.34:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = nova

[vnc]
# ...
enabled = True
vncserver_listen = 0.0.0.0
vncserver_proxyclient_address = $my_ip
novncproxy_base_url = http://192.168.159.34:6080/vnc_auto.html

[glance]
# ...
api_servers = http://192.168.159.34:9292

[oslo_concurrency]
# ...
lock_path = /var/lib/nova/tmp
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3. 检查设备CPU是否支持虚拟化

# egrep -c '(vmx|svm)' /proc/cpuinfo
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此处输出的数值大于1，说明设备CPU支持虚拟化，若为0，则不支持虚拟化，若要实现计算节点的功能，则CPU必须支持虚拟化。

若CPU不支持虚拟化，且希望成功部署openstack，则需要修改/etc/nova/nova.conf配置文件中的[libvirt]部分，将virt_type修改为qemu

[libvirt]
# ...
virt_type = qemu
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4. 启动服务

# systemctl enable libvirtd.service openstack-nova-compute.service
# systemctl start libvirtd.service openstack-nova-compute.service
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查看openstack-nova-compute.service状态，出现报错：

# systemctl status openstack-nova-compute.service 
● openstack-nova-compute.service - OpenStack Nova Compute Server
   Loaded: loaded (/usr/lib/systemd/system/openstack-nova-compute.service; enabled; vendor preset: disabled)
   Active: activating (start) since Wed 2017-03-15 21:38:03 CST; 9s ago
 Main PID: 64994 (nova-compute)
   CGroup: /system.slice/openstack-nova-compute.service
           └─64994 /usr/bin/python2 /usr/bin/nova-compute

Mar 15 21:38:03 node2.example.local systemd[1]: openstack-nova-compute.service holdoff time over, scheduling restart.
Mar 15 21:38:03 node2.example.local systemd[1]: Starting OpenStack Nova Compute Server...
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查看服务日志：

# tail -n 20 /var/log/nova/nova-compute.log
2017-03-15 21:34:41.444 28990 INFO os_vif [-] Loaded VIF plugins: ovs, linux_bridge
2017-03-15 21:34:41.444 28990 WARNING oslo_reports.guru_meditation_report [-] Guru meditation now registers SIGUSR1 and SIGUSR2 by default for backward compatibility. SIGUSR1 will no longer be registered in a future release, so please us
e SIGUSR2 to generate reports.
2017-03-15 21:34:41.477 28990 WARNING oslo_config.cfg [-] Option "use_neutron" from group "DEFAULT" is deprecated for removal.  Its value may be silently ignored in the future.
2017-03-15 21:34:41.499 28990 INFO nova.virt.driver [req-8bfc5b4c-29f6-4d5a-acb7-bb09c97b0fae - - - - -] Loading compute driver 'libvirt.LibvirtDriver'
2017-03-15 21:34:41.629 28990 WARNING os_brick.initiator.connectors.remotefs [req-8bfc5b4c-29f6-4d5a-acb7-bb09c97b0fae - - - - -] Connection details not present. RemoteFsClient may not initialize properly.
2017-03-15 21:34:57.277 28990 WARNING oslo_config.cfg [req-8bfc5b4c-29f6-4d5a-acb7-bb09c97b0fae - - - - -] Option "force_dhcp_release" from group "DEFAULT" is deprecated for removal.  Its value may be silently ignored in the future.
2017-03-15 21:34:57.299 28990 INFO nova.service [-] Starting compute node (version 15.0.0-1.el7)
2017-03-15 21:34:57.300 28990 ERROR oslo_service.service [-] Error starting thread.
2017-03-15 21:34:57.300 28990 ERROR oslo_service.service Traceback (most recent call last):
2017-03-15 21:34:57.300 28990 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/oslo_service/service.py", line 722, in run_service
2017-03-15 21:34:57.300 28990 ERROR oslo_service.service     service.start()
2017-03-15 21:34:57.300 28990 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/nova/service.py", line 144, in start
2017-03-15 21:34:57.300 28990 ERROR oslo_service.service     self.manager.init_host()
2017-03-15 21:34:57.300 28990 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 1136, in init_host
2017-03-15 21:34:57.300 28990 ERROR oslo_service.service     raise exception.PlacementNotConfigured()
2017-03-15 21:34:57.300 28990 ERROR oslo_service.service PlacementNotConfigured: This compute is not configured to talk to the placement service. Configure the [placement] section of nova.conf and restart the service.
2017-03-15 21:34:57.300 28990 ERROR oslo_service.service 
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查看日志，发现原因为：官方文档中遗漏了nova-placement-api的安装

编辑控制节点

#安装nova_placement-api
# yum install -y nova-placement-api

#创建placement service
# openstack service create --name placement --description "OpenStack Placement" placement
+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Placement              |
| enabled     | True                             |
| id          | b6b09a9fc3134a01a408df93f690836c |
| name        | placement                        |
| type        | placement                        |
+-------------+----------------------------------+

#创建该服务的endpoint
# openstack endpoint create --region RegionOne placement public http://192.168.159.34:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | e77c675b997b4edaae80ec25226ccff4 |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | b6b09a9fc3134a01a408df93f690836c |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://192.168.159.34:8778       |
+--------------+----------------------------------+
# openstack endpoint create --region RegionOne placement admin http://192.168.159.34:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 5c38ab1ea7d34143ba7f2a84371eafc0 |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | b6b09a9fc3134a01a408df93f690836c |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://192.168.159.34:8778       |
+--------------+----------------------------------+
# openstack endpoint create --region RegionOne placement internal http://192.168.159.34:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 0c0aaeeabc294f0aa4541a1f7808bea5 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | b6b09a9fc3134a01a408df93f690836c |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://192.168.159.34:8778       |
+--------------+----------------------------------+

#重启httpd服务
# systemctl restart httpd
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编辑计算节点

# vim /etc/nova/nova.conf
#...
[placement]
auth_uri = http://192.168.159.34:5000
auth_url = http://192.168.159.34:35357
memcached_servers = 192.168.159.34:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = nova
os_region_name = RegionOne
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重启服务

# systemctl restart openstack-nova-compute.service 
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