OpenStack实践系列④计算服务Nova

OpenStack实践系列④计算服务Nova

3.6 Nova控制节点的部署
创建服务的凭证，完成下列步骤:

创建nova用户，并加入到service项目中，赋予admin权限

[root@node1 ~]# source admin-openrc.sh
[root@node1 ~]# openstack user create --domain default --password=nova nova
+-----------+----------------------------------+
| Field | Value |
+-----------+----------------------------------+
| domain_id | default |
| enabled | True |
| id | 32c8ed2128c747b49482364776ae35a2 |
| name | nova |
+-----------+----------------------------------+

nova用户赋予管理角色

[root@node1 ~]# openstack role add --project service --user nova admin

编辑/etc/nova/nova.conf文件，并完成以下操作:

在[api_database]和[database]部分，配置数据库访问

[api_database]
...
connection = mysql://nova:nova@192.168.3.199/nova_api
[database]
...
connection=mysql://nova:nova@192.168.3.199/nova

在[DEFAULT]和[oslo_messaging_rabbit]部分，配置RabbitMQ的消息队列访问

[DEFAULT]
...
rpc_backend = rabbit
my_ip=192.168.3.199
enabled_apis=osapi_compute,metadata
network_api_class=nova.network.neutronv2.api.API
security_group_api=neutron
linuxnet_interface_driver=nova.network.linux_net.NeutronLinuxBridgeInterfaceDriver
firewall_driver=nova.virt.firewall.NoopFirewallDriver
verbose=True

[oslo_messaging_rabbit]
...
rabbit_host=192.168.3.199
rabbit_port=5672
rabbit_userid=openstack
rabbit_password=openstack

在[DEFAULT]和[keystone_authtoken]部分，配置认证服务

[DEFAULT]
...
auth_strategy = keystone
[keystone_authtoken]
...
auth_uri = http://192.168.3.199:5000
auth_url = http://192.168.3.199:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = service
username = nova
password = nova
在[DEFAULT]部分，启用对网络服务支持

[vnc]
...
vncserver_listen=$my_ip
vncserver_proxyclient_address=$my_ip

在[glance]部分，配置镜像服务API

[glance]
...
host=$my_ip

在[oslo_concurrency]部分，配置锁路径

[oslo_concurrency]
...
lock_path=/var/lib/nova/tmp

修改nova的配置文件，配置结果如下

[root@node1 nova]# grep -n "^[a-z]" nova.conf 
198:my_ip=192.168.3.199
344:enabled_apis=osapi_compute,metadata
506:auth_strategy=keystone
838:network_api_class=nova.network.neutronv2.api.API
930:linuxnet_interface_driver=nova.network.linux_net.NeutronLinuxBridgeInterfaceDriver
1064:security_group_api=neutron
1241:firewall_driver=nova.virt.firewall.NoopFirewallDriver
1284:verbose=true
1423:rpc_backend=rabbit
1743:connection=mysql://nova:nova@192.168.3.199/nova
1944:host=$my_ip
2122:auth_uri = http://192.168.3.199:5000
2123:auth_url = http://192.168.3.199:35357
2124:auth_plugin = password
2125:project_domain_id = default
2126:user_domain_id = default
2127:project_name = service
2128:username = nova
2129:password = nova
2752:lock_path=/var/lib/nova/tmp
2880:rabbit_host=192.168.3.199
2881:rabbit_port=5672
2882:rabbit_userid=openstack
2883:rabbit_password=openstack
3324:vncserver_listen=$my_ip
3329:vncserver_proxyclient_address=$my_ip

同步数据库

[root@node1 ~]# su -s /bin/sh -c "nova-manage db sync" nova
MariaDB [(none)]> use nova;
Database changed
MariaDB [nova]> show tables;
+--------------------------------------------+
| Tables_in_nova |
+--------------------------------------------+
| agent_builds |
| aggregate_hosts |
| aggregate_metadata |
| aggregates |
| block_device_mapping |
| bw_usage_cache |
| cells |
| certificates |
| compute_nodes |
| console_pools |
| consoles |
| dns_domains |
| fixed_ips |
| floating_ips |
| instance_actions |
| instance_actions_events |
| instance_extra |
| instance_faults |
| instance_group_member |
| instance_group_policy |
| instance_groups |
| instance_id_mappings |
| instance_info_caches |
| instance_metadata |
| instance_system_metadata |
| instance_type_extra_specs |
| instance_type_projects |
| instance_types |
| instances |
| key_pairs |
| migrate_version |
| migrations |
| networks |
| pci_devices |
| project_user_quotas |
| provider_fw_rules |
| quota_classes |
| quota_usages |
| quotas |
| reservations |
| s3_images |
| security_group_default_rules |
| security_group_instance_association |
| security_group_rules |
| security_groups |
| services |
| shadow_agent_builds |
| shadow_aggregate_hosts |
| shadow_aggregate_metadata |
| shadow_aggregates |
| shadow_block_device_mapping |
| shadow_bw_usage_cache |
| shadow_cells |
| shadow_certificates |
| shadow_compute_nodes |
| shadow_console_pools |
| shadow_consoles |
| shadow_dns_domains |
| shadow_fixed_ips |
| shadow_floating_ips |
| shadow_instance_actions |
| shadow_instance_actions_events |
| shadow_instance_extra |
| shadow_instance_faults |
| shadow_instance_group_member |
| shadow_instance_group_policy |
| shadow_instance_groups |
| shadow_instance_id_mappings |
| shadow_instance_info_caches |
| shadow_instance_metadata |
| shadow_instance_system_metadata |
| shadow_instance_type_extra_specs |
| shadow_instance_type_projects |
| shadow_instance_types |
| shadow_instances |
| shadow_key_pairs |
| shadow_migrate_version |
| shadow_migrations |
| shadow_networks |
| shadow_pci_devices |
| shadow_project_user_quotas |
| shadow_provider_fw_rules |
| shadow_quota_classes |
| shadow_quota_usages |
| shadow_quotas |
| shadow_reservations |
| shadow_s3_images |
| shadow_security_group_default_rules |
| shadow_security_group_instance_association |
| shadow_security_group_rules |
| shadow_security_groups |
| shadow_services |
| shadow_snapshot_id_mappings |
| shadow_snapshots |
| shadow_task_log |
| shadow_virtual_interfaces |
| shadow_volume_id_mappings |
| shadow_volume_usage_cache |
| snapshot_id_mappings |
| snapshots |
| tags |
| task_log |
| virtual_interfaces |
| volume_id_mappings |
| volume_usage_cache |
+--------------------------------------------+
105 rows in set (0.00 sec)

启动nova的全部服务

[root@node1 ~]# systemctl enable openstack-nova-api.service openstack-nova-cert.service openstack-nova-consoleauth.service openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service

[root@node1 ~]# systemctl start openstack-nova-api.service openstack-nova-cert.service openstack-nova-consoleauth.service openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service

在keystone上注册nova，创建计算服务API端点，并检查控制节点的nova服务是否配置成功

[root@node1 ~]# openstack service create --name nova --description "OpenStack Compute" compute
+-------------+----------------------------------+
| Field | Value |
+-------------+----------------------------------+
| description | OpenStack Compute |
| enabled | True |
| id | 6bc784216b654af79ad1b23d36767eb5 |
| name | nova |
| type | compute |
+-------------+----------------------------------+

[root@node1 ~]# openstack endpoint create --region RegionOne compute public http://192.168.3.199:8774/v2/%(tenant_id)s
+--------------+--------------------------------------------+
| Field | Value |
+--------------+--------------------------------------------+
| enabled | True |
| id | c94e79c4c7874e6c8646e843dc83a4a8 |
| interface | public |
| region | RegionOne |
| region_id | RegionOne |
| service_id | 6bc784216b654af79ad1b23d36767eb5 |
| service_name | nova |
| service_type | compute |
| url | http://192.168.3.199:8774/v2/%(tenant_id)s |
+--------------+--------------------------------------------+

[root@node1 ~]# openstack endpoint create --region RegionOne compute internal http://192.168.3.199:8774/v2/%(tenant_id)s
+--------------+--------------------------------------------+
| Field | Value |
+--------------+--------------------------------------------+
| enabled | True |
| id | f7644b114f4c4aa3902f72a29b8e5894 |
| interface | internal |
| region | RegionOne |
| region_id | RegionOne |
| service_id | 6bc784216b654af79ad1b23d36767eb5 |
| service_name | nova |
| service_type | compute |
| url | http://192.168.3.199:8774/v2/%(tenant_id)s |
+--------------+--------------------------------------------+
[root@node1 ~]# openstack endpoint create --region RegionOne compute admin http://192.168.3.199:8774/v2/%(tenant_id)s
+--------------+--------------------------------------------+
| Field | Value |
+--------------+--------------------------------------------+
| enabled | True |
| id | 6c3c1308cb0647b891faa8d2260bcf90 |
| interface | admin |
| region | RegionOne |
| region_id | RegionOne |
| service_id | 6bc784216b654af79ad1b23d36767eb5 |
| service_name | nova |
| service_type | compute |
| url | http://192.168.3.199:8774/v2/%(tenant_id)s |
+--------------+--------------------------------------------+
[root@node1 ~]# openstack host list
+---------------------+-------------+----------+
| Host Name | Service | Zone |
+---------------------+-------------+----------+
| node1.chinasoft.com | conductor | internal |
| node1.chinasoft.com | consoleauth | internal |
| node1.chinasoft.com | scheduler | internal |
| node1.chinasoft.com | cert | internal |
+---------------------+-------------+----------+

3.7 Nova compute 计算节点的部署(192.168.3.200)

wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

图解Nova cpmpute

nova-compute一般运行在计算节点上，通过Message Queue接收并管理VM的生命周期
nova-compute通过Libvirt管理KVN，通过XenAPI管理Xen等
配置时间同步,修改其配置文件,下载chrony

# yum install -y chrony

修改其配置文件

# vim /etc/chrony.conf

server 192.168.3.199 iburst 

（只保留这一个server，也就是和控制节点的时间保持同步）
chrony开机自启动，并且启动

# systemctl enable chronyd.service
# systemctl start chronyd.service

设置Centos7的时区

[root@node2 yum.repos.d]# timedatectl set-timezone Asia/Shanghai

查看时区

[root@node2 yum.repos.d]# timedatectl status
Local time: Wed 2017-04-26 15:27:53 CST
Universal time: Wed 2017-04-26 07:27:53 UTC
RTC time: Wed 2017-04-26 07:27:57
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: no
DST active: n/a

开始部署计算节点
更改计算节点上的配置文件，直接使用控制节点的配置文件

[root@node1 nova]# scp /etc/nova/nova.conf 192.168.3.200:/etc/nova/ (在控制节点上操作的scp)

在计算节点node2.chinasoft.com上编辑/etc/nova/nova.conf文件，并完成以下操作:

更改配置文件后的过滤结果

[root@node2 nova]# grep -n '^[a-z]' nova.conf 
198:my_ip=192.168.3.200    # 改成计算节点本机IP
344:enabled_apis=osapi_compute,metadata
506:auth_strategy=keystone
838:network_api_class=nova.network.neutronv2.api.API
930:linuxnet_interface_driver=nova.network.linux_net.NeutronLinuxBridgeInterfaceDriver
1064:security_group_api=neutron
1241:firewall_driver=nova.virt.firewall.NoopFirewallDriver
1284:verbose=true
1423:rpc_backend=rabbit
1743:connection=mysql://nova:nova@192.168.3.199/nova
1944:host=192.168.3.199    # [glance] 部分连接控制节点
2122:auth_uri = http://192.168.3.199:5000
2123:auth_url = http://192.168.3.199:35357
2124:auth_plugin = password
2125:project_domain_id = default
2126:user_domain_id = default
2127:project_name = service
2128:username = nova
2129:password = nova
2310:virt_type=kvm    # [libvirt] 部分 使用kvm虚拟机，需要cpu支持，可通过grep "vmx" /proc/cpuinfo查看
2752:lock_path=/var/lib/nova/tmp
2880:rabbit_host=192.168.3.199
2881:rabbit_port=5672
2882:rabbit_userid=openstack
2883:rabbit_password=openstack
3315:novncproxy_base_url=http://192.168.3.199:6080/vnc_auto.html # 指定novncproxy的IP地址和端口
3324:vncserver_listen=0.0.0.0    # vnc监听0.0.0.0
3329:vncserver_proxyclient_address=$my_ip
3334:vnc_enabled=true    # 启用vnc
3339:vnc_keymap=en-us    # 英语键盘

启动计算节点的libvirt和nova-compute

[root@node2 nova]# systemctl enable libvirtd openstack-nova-compute
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-compute.service to /usr/lib/systemd/system/openstack-nova-compute.service.
[root@node2 nova]# systemctl start libvirtd openstack-nova-compute

在控制节点中查看注册的host,最后一个compute即是注册的host

[root@node1 ~]# openstack host list
+---------------------+-------------+----------+
| Host Name | Service | Zone |
+---------------------+-------------+----------+
| node1.chinasoft.com | conductor | internal |
| node1.chinasoft.com | consoleauth | internal |
| node1.chinasoft.com | scheduler | internal |
| node1.chinasoft.com | cert | internal |
| node2.chinasoft.com | compute | nova |
+---------------------+-------------+----------+

在控制节点中测试nova和glance连接正常，nova链接keystone是否正常

[root@node1 ~]# nova image-list
+--------------------------------------+--------+--------+--------+
| ID | Name | Status | Server |
+--------------------------------------+--------+--------+--------+
| 447ef14f-5ab2-4a69-af46-cf4331f45967 | cirros | ACTIVE | |
+--------------------------------------+--------+--------+--------+
[root@node1 ~]# nova endpoints
WARNING: keystone has no endpoint in ! Available endpoints for this service:
+-----------+----------------------------------+
| keystone | Value |
+-----------+----------------------------------+
| id | 0be2afa7f0594d53947d5fe7574b112a |
| interface | public |
| region | RegionOne |
| region_id | RegionOne |
| url | http://192.168.3.199:5000/v2.0 |
+-----------+----------------------------------+
+-----------+----------------------------------+
| keystone | Value |
+-----------+----------------------------------+
| id | 8dffe48e9f4a425381a6504d926829aa |
| interface | admin |
| region | RegionOne |
| region_id | RegionOne |
| url | http://192.168.3.199:35357/v2.0 |
+-----------+----------------------------------+
+-----------+----------------------------------+
| keystone | Value |
+-----------+----------------------------------+
| id | e637eb99b5964306b5dc36eff47808fb |
| interface | internal |
| region | RegionOne |
| region_id | RegionOne |
| url | http://192.168.3.199:5000/v2.0 |
+-----------+----------------------------------+
WARNING: nova has no endpoint in ! Available endpoints for this service:
+-----------+---------------------------------------------------------------+
| nova | Value |
+-----------+---------------------------------------------------------------+
| id | 6c3c1308cb0647b891faa8d2260bcf90 |
| interface | admin |
| region | RegionOne |
| region_id | RegionOne |
| url | http://192.168.3.199:8774/v2/7340dd86a8b14e73ac36b6d6385c689c |
+-----------+---------------------------------------------------------------+
+-----------+---------------------------------------------------------------+
| nova | Value |
+-----------+---------------------------------------------------------------+
| id | c94e79c4c7874e6c8646e843dc83a4a8 |
| interface | public |
| region | RegionOne |
| region_id | RegionOne |
| url | http://192.168.3.199:8774/v2/7340dd86a8b14e73ac36b6d6385c689c |
+-----------+---------------------------------------------------------------+
+-----------+---------------------------------------------------------------+
| nova | Value |
+-----------+---------------------------------------------------------------+
| id | f7644b114f4c4aa3902f72a29b8e5894 |
| interface | internal |
| region | RegionOne |
| region_id | RegionOne |
| url | http://192.168.3.199:8774/v2/7340dd86a8b14e73ac36b6d6385c689c |
+-----------+---------------------------------------------------------------+
WARNING: glance has no endpoint in ! Available endpoints for this service:
+-----------+----------------------------------+
| glance | Value |
+-----------+----------------------------------+
| id | 4ea9ed1557dc4e548c76cdf0f3d4fbdc |
| interface | public |
| region | RegionOne |
| region_id | RegionOne |
| url | http://192.168.3.199:9292 |
+-----------+----------------------------------+
+-----------+----------------------------------+
| glance | Value |
+-----------+----------------------------------+
| id | b8012edc462a4d82b68b6a138b47cc94 |
| interface | admin |
| region | RegionOne |
| region_id | RegionOne |
| url | http://192.168.3.199:9292 |
+-----------+----------------------------------+
+-----------+----------------------------------+
| glance | Value |
+-----------+----------------------------------+
| id | cef79d1f235c4fbe9eb2679c101edc15 |
| interface | internal |
| region | RegionOne |
| region_id | RegionOne |
| url | http://192.168.3.199:9292 |
+-----------+----------------------------------+