【openstack N版】——摘除一个计算节点

1.查看计算节点

1 #查看所有计算节点
2 [[email protected] ~]# nova service-list+----+------------------+--------------------+----------+---------+-------+----------------------------+-----------------+| Id | Binary           | Host               | Zone     | Status  | State | Updated_at                 | Disabled Reason |+----+------------------+--------------------+----------+---------+-------+----------------------------+-----------------+| 1  | nova-conductor   | open-control01     | internal | enabled | up    | 2017-05-02T02:22:09.000000 | -               || 2  | nova-scheduler   | open-control01     | internal | enabled | up    | 2017-05-02T02:22:03.000000 | -               || 3  | nova-consoleauth | open-control01     | internal | enabled | up    | 2017-05-02T02:22:05.000000 | -               || 8  | nova-compute     | open-compute01     | nova     | enabled | up    | 2017-05-02T02:22:06.000000 | -               || 9  | nova-compute     | open-compute02     | nova     | enabled | up    | 2017-05-02T02:22:03.000000 | -               || 10 | nova-compute     | open-compute03     | nova     | enabled | up    | 2017-05-02T02:22:03.000000 | -               || 11 | nova-compute     | open-compute04     | nova     | enabled | up    | 2017-05-02T02:22:01.000000 | -               |+----+------------------+--------------------+----------+---------+-------+----------------------------+-----------------+

2.选择要删除的计算节点

1 #删除open-compute04的ID
2 [[email protected] ~]# nova service-delete 11

3.查看网络

1 #查看网络
2 [[email protected] ~]# neutron agent-list+--------------------------------------+--------------------+--------------------+-------------------+-------+----------------+---------------------------+| id                                   | agent_type         | host               | availability_zone | alive | admin_state_up | binary                    |+--------------------------------------+--------------------+--------------------+-------------------+-------+----------------+---------------------------+| 231b4151-79ae-403c-9634-22fb84504012 | Linux bridge agent | open-compute04     |                   | :-)   | True           | neutron-linuxbridge-agent || 3b7808f5-c5da-495e-bd5d-53ec0e278336 | Linux bridge agent | open-compute02     |                   | :-)   | True           | neutron-linuxbridge-agent || 461362e0-a2fc-4c07-8f05-7438238895a3 | Linux bridge agent | open-control01     |                   | :-)   | True           | neutron-linuxbridge-agent || de7c1926-1934-4d95-ab35-5ec249e92f1b | Linux bridge agent | open-compute01     |                   | :-)   | True           | neutron-linuxbridge-agent || ecb03a62-3099-486e-a685-4a94b1891300 | DHCP agent         | open-control01     | nova              | :-)   | True           | neutron-dhcp-agent        || f1041be4-b6e5-41da-bbb8-73efcccf1893 | Linux bridge agent | open-compute03     |                   | :-)   | True           | neutron-linuxbridge-agent || fb1b72fe-3a7d-4d74-9a65-87fe082b672b | Metadata agent     | open-control01     |                   | :-)   | True           | neutron-metadata-agent    |+--------------------------------------+--------------------+--------------------+-------------------+-------+----------------+---------------------------+

4.删除compute04的网络

1 #删除网络（ID）
2 [[email protected] ~]# neutron agent-delete 231b4151-79ae-403c-9634-22fb84504012
3 Deleted agent(s): 231b4151-79ae-403c-9634-22fb84504012

5.停止计算节点nova、neutron相关服务

1 #停止服务
2 [[email protected] ~]# systemctl stop libvirtd.service openstack-nova-compute.service
3 [[email protected] ~]# systemctl stop neutron-linuxbridge-agent

6.登录数据库

1 #用nova用户登录数据库
2 [[email protected] ~]# mysql -unova -pnovapasswd
3 #使用nova库
4 MariaDB [(none)]> use nova;
5 #查询nova主机
6 MariaDB [nova]> select host from nova.services;+--------------------+| host               |+--------------------+| open-compute01     || open-compute02     || open-compute03     || open-compute04     || open-control01     || open-control01     || open-control01     |+--------------------+
7 MariaDB [nova]> select hypervisor_hostname from compute_nodes;+---------------------+| hypervisor_hostname |+---------------------+| open-compute01      || open-compute02      || open-compute03      || open-compute04      || open-compute04      |+---------------------+

7.删除查询的数据

1 #删除
2 MariaDB [nova]> delete from nova.services where host="open-compute04";
3 Query OK, 1 row affected (0.02 sec)
4 MariaDB [nova]> delete from compute_nodes where hypervisor_hostname="open-compute04";
5 Query OK, 2 rows affected (0.01 sec)

8.检查

1 #nova列表
2 [[email protected] ~]# nova service-list +----+------------------+--------------------+----------+---------+-------+----------------------------+-----------------+| Id | Binary           | Host               | Zone     | Status  | State | Updated_at                 | Disabled Reason |+----+------------------+--------------------+----------+---------+-------+----------------------------+-----------------+| 1  | nova-conductor   | open-control01     | internal | enabled | up    | 2017-05-02T02:43:00.000000 | -               || 2  | nova-scheduler   | open-control01     | internal | enabled | up    | 2017-05-02T02:42:53.000000 | -               || 3  | nova-consoleauth | open-control01     | internal | enabled | up    | 2017-05-02T02:42:55.000000 | -               || 8  | nova-compute     | open-compute01     | nova     | enabled | up    | 2017-05-02T02:42:55.000000 | -               || 9  | nova-compute     | open-compute02     | nova     | enabled | up    | 2017-05-02T02:42:53.000000 | -               || 10 | nova-compute     | open-compute03     | nova     | enabled | up    | 2017-05-02T02:42:53.000000 | -               |+----+------------------+--------------------+----------+---------+-------+----------------------------+-----------------+
3 #neutron列表
4 [[email protected] ~]# neutron agent-list+--------------------------------------+--------------------+--------------------+-------------------+-------+----------------+---------------------------+| id                                   | agent_type         | host               | availability_zone | alive | admin_state_up | binary                    |+--------------------------------------+--------------------+--------------------+-------------------+-------+----------------+---------------------------+| 3b7808f5-c5da-495e-bd5d-53ec0e278336 | Linux bridge agent | open-compute02     |                   | :-)   | True           | neutron-linuxbridge-agent || 461362e0-a2fc-4c07-8f05-7438238895a3 | Linux bridge agent | open-control01     |                   | :-)   | True           | neutron-linuxbridge-agent || de7c1926-1934-4d95-ab35-5ec249e92f1b | Linux bridge agent | open-compute01     |                   | :-)   | True           | neutron-linuxbridge-agent || ecb03a62-3099-486e-a685-4a94b1891300 | DHCP agent         | open-control01     | nova              | :-)   | True           | neutron-dhcp-agent        || f1041be4-b6e5-41da-bbb8-73efcccf1893 | Linux bridge agent | open-compute03     |                   | :-)   | True           | neutron-linuxbridge-agent || fb1b72fe-3a7d-4d74-9a65-87fe082b672b | Metadata agent     | open-control01     |                   | :-)   | True           | neutron-metadata-agent    |+--------------------------------------+--------------------+--------------------+-------------------+-------+----------------+---------------------------+

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