查看openstack集群的服务列表
[root@os-node1 ~]# nova service-list
+------------------+----------+----------+---------+-------+----------------------------+-----------------+
| Binary | Host | Zone | Status | State | Updated_at | Disabled Reason |
+------------------+----------+----------+---------+-------+----------------------------+-----------------+
| nova-cert | os-node1 | internal | enabled | up | 2014-08-03T15:35:02.000000 | - |
| nova-consoleauth | os-node1 | internal | enabled | up | 2014-08-03T15:35:05.000000 | - |
| nova-conductor | os-node1 | internal | enabled | up | 2014-08-03T15:35:02.000000 | - |
| nova-scheduler | os-node1 | internal | enabled | up | 2014-08-03T15:35:07.000000 | - |
| nova-compute | os-node3 | nova | enabled | down | 2014-08-02T17:18:04.000000 | - |
| nova-compute | os-node4 | nova | enabled | down | 2014-08-02T17:18:16.000000 | - |
| nova-cells | os-node1 | internal | enabled | up | 2014-08-03T15:35:00.000000 | - |
| nova-console | os-node1 | internal | enabled | up | 2014-08-03T15:35:02.000000 | - |
| nova-compute | os-node5 | nova | enabled | up | 2014-08-03T15:35:09.000000 | - |
| nova-compute | os-node6 | nova | enabled | up | 2014-08-03T15:35:00.000000 | - |
+------------------+----------+----------+---------+-------+----------------------------+-----------------+
查看发现os-node3 down了 如果确认此计算节点可以删除需要在控制器的数据库中进行下面操作
查看compute_nodes数据库表发现os-node3的id为1，service_id为5.
mysql> select * from compute_nodes;
+---------------------+---------------------+------------+----+------------+-------+-----------+----------+------------+----------------+---------------+-----------------+--------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+-------------+--------------+------------------+-------------+---------------------+---------+-------------+--------------------------------------------------------------------------------------------------------+-----------+
| created_at | updated_at | deleted_at | id | service_id | vcpus | memory_mb | local_gb | vcpus_used | memory_mb_used | local_gb_used | hypervisor_type | hypervisor_version | cpu_info | disk_available_least | free_ram_mb | free_disk_gb | current_workload | running_vms | hypervisor_hostname | deleted | host_ip | supported_instances | pci_stats |
+---------------------+---------------------+------------+----+------------+-------+-----------+----------+------------+----------------+---------------+-----------------+--------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+-------------+--------------+------------------+-------------+---------------------+---------+-------------+--------------------------------------------------------------------------------------------------------+-----------+
| 2014-07-29 19:34:06 | 2014-08-02 17:18:06 | NULL | 1 | 5 | 24 | 129217 | 95 | 0 | 512 | 0 | QEMU | 12001 | {"vendor": "Intel", "model": "SandyBridge", "arch": "x86_64", "features": ["pdpe1gb", "osxsave", "dca", "pcid", "pdcm", "xtpr", "tm2", "est", "smx", "vmx", "ds_cpl", "monitor", "dtes64", "pbe", "tm", "ht", "ss", "acpi", "ds", "vme"], "topology": {"cores": 6, "threads": 2, "sockets": 1}} | 23 | 128705 | 95 | 0 | 0 | os-node3 | 0 | 10.40.10.66 | [["i686", "qemu", "hvm"], ["i686", "kvm", "hvm"], ["x86_64", "qemu", "hvm"], ["x86_64", "kvm", "hvm"]] | [] |
| 2014-07-29 19:34:37 | 2014-08-02 17:17:38 | NULL | 2 | 6 | 24 | 129015 | 672 | 56 | 80512 | 1700 | QEMU | 12001 | {"vendor": "Intel", "model": "SandyBridge", "arch": "x86_64", "features": ["pdpe1gb", "osxsave", "dca", "pcid", "pdcm", "xtpr", "tm2", "est", "smx", "vmx", "ds_cpl", "monitor", "dtes64", "pbe", "tm", "ht", "ss", "acpi", "ds", "vme"], "topology": {"cores": 6, "threads": 2, "sockets": 1}} | -527 | 48503 | -1028 | 0 | 9 | os-node4 | 0 | 10.40.10.67 | [["i686", "qemu", "hvm"], ["i686", "kvm", "hvm"], ["x86_64", "qemu", "hvm"], ["x86_64", "kvm", "hvm"]] | [] |
| 2014-08-01 06:22:07 | 2014-08-03 15:23:53 | NULL | 3 | 9 | 24 | 64575 | 487 | 20 | 32512 | 600 | QEMU | 12001 | {"vendor": "Intel", "model": "SandyBridge", "arch": "x86_64", "features": ["pdpe1gb", "osxsave", "dca", "pcid", "pdcm", "xtpr", "tm2", "est", "smx", "vmx", "ds_cpl", "monitor", "dtes64", "pbe", "tm", "ht", "ss", "acpi", "ds", "vme"], "topology": {"cores": 6, "threads": 2, "sockets": 1}} | 460 | 32063 | -113 | 0 | 4 | os-node5 | 0 | 10.40.10.68 | [["i686", "qemu", "hvm"], ["i686", "kvm", "hvm"], ["x86_64", "qemu", "hvm"], ["x86_64", "kvm", "hvm"]] | [] |
| 2014-08-01 06:22:12 | 2014-08-03 15:24:39 | NULL | 4 | 10 | 24 | 64573 | 487 | 20 | 32512 | 600 | QEMU | 12001 | {"vendor": "Intel", "model": "SandyBridge", "arch": "x86_64", "features": ["pdpe1gb", "osxsave", "dca", "pcid", "pdcm", "xtpr", "tm2", "est", "smx", "vmx", "ds_cpl", "monitor", "dtes64", "pbe", "tm", "ht", "ss", "acpi", "ds", "vme"], "topology": {"cores": 6, "threads": 2, "sockets": 1}} | 458 | 32061 | -113 | 0 | 4 | os-node6 | 0 | 10.40.10.69 | [["i686", "qemu", "hvm"], ["i686", "kvm", "hvm"], ["x86_64", "qemu", "hvm"], ["x86_64", "kvm", "hvm"]] | [] |
+---------------------+---------------------+------------+----+------------+-------+-----------+----------+------------+----------------+---------------+-----------------+--------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+-------------+--------------+------------------+-------------+---------------------+---------+-------------+--------------------------------------------------------------------------------------------------------+-----------+
4 rows in set (0.00 sec)
查看services数据库表发现os-node3的service_id为5
mysql> select * from services;
+---------------------+---------------------+------------+----+----------+------------------+-------------+--------------+----------+---------+-----------------+
| created_at | updated_at | deleted_at | id | host | binary | topic | report_count | disabled | deleted | disabled_reason |
+---------------------+---------------------+------------+----+----------+------------------+-------------+--------------+----------+---------+-----------------+
| 2014-07-29 18:33:46 | 2014-08-03 15:27:31 | NULL | 1 | os-node1 | nova-cert | cert | 42058 | 0 | 0 | NULL |
| 2014-07-29 18:33:46 | 2014-08-03 15:27:35 | NULL | 2 | os-node1 | nova-consoleauth | consoleauth | 42062 | 0 | 0 | NULL |
| 2014-07-29 18:33:46 | 2014-08-03 15:27:32 | NULL | 3 | os-node1 | nova-conductor | conductor | 42059 | 0 | 0 | NULL |
| 2014-07-29 18:33:46 | 2014-08-03 15:27:27 | NULL | 4 | os-node1 | nova-scheduler | scheduler | 42058 | 0 | 0 | NULL |
| 2014-07-29 19:34:05 | 2014-08-02 17:18:04 | NULL | 5 | os-node3 | nova-compute | compute | 30542 | 0 | 0 | NULL |
| 2014-07-29 19:34:35 | 2014-08-02 17:18:16 | NULL | 6 | os-node4 | nova-compute | compute | 32622 | 0 | 0 | NULL |
| 2014-07-29 22:33:10 | 2014-08-03 15:27:30 | NULL | 7 | os-node1 | nova-cells | cells | 40640 | 0 | 0 | NULL |
| 2014-07-29 22:33:13 | 2014-08-03 15:27:32 | NULL | 8 | os-node1 | nova-console | console | 40640 | 0 | 0 | NULL |
| 2014-08-01 06:22:06 | 2014-08-03 15:27:29 | NULL | 9 | os-node5 | nova-compute | compute | 20510 | 0 | 0 | NULL |
| 2014-08-01 06:22:11 | 2014-08-03 15:27:30 | NULL | 10 | os-node6 | nova-compute | compute | 20511 | 0 | 0 | NULL |
+---------------------+---------------------+------------+----+----------+------------------+-------------+--------------+----------+---------+-----------------+
10 rows in set (0.00 sec)
如果确定删除，根据上面的查看信息进行下面的3步操作
mysql> delete from compute_node_stats where compute_node_id=1;
Query OK, 336 rows affected (0.04 sec)
mysql> delete from compute_nodes where service_id=5;
Query OK, 1 row affected (0.02 sec)
mysql> delete from services where id=5;
Query OK, 1 row affected (0.02 sec)
退出数据库后再次查看nova 的service-list,发现os-node3已被删除。
[root@os-node1 ~]# nova service-list
+------------------+----------+----------+---------+-------+----------------------------+-----------------+
| Binary | Host | Zone | Status | State | Updated_at | Disabled Reason |
+------------------+----------+----------+---------+-------+----------------------------+-----------------+
| nova-cert | os-node1 | internal | enabled | up | 2014-08-03T15:37:02.000000 | - |
| nova-consoleauth | os-node1 | internal | enabled | up | 2014-08-03T15:37:05.000000 | - |
| nova-conductor | os-node1 | internal | enabled | up | 2014-08-03T15:37:02.000000 | - |
| nova-scheduler | os-node1 | internal | enabled | up | 2014-08-03T15:36:57.000000 | - |
| nova-compute | os-node4 | nova | enabled | down | 2014-08-02T17:18:16.000000 | - |
| nova-cells | os-node1 | internal | enabled | up | 2014-08-03T15:37:00.000000 | - |
| nova-console | os-node1 | internal | enabled | up | 2014-08-03T15:37:02.000000 | - |
| nova-compute | os-node5 | nova | enabled | up | 2014-08-03T15:36:59.000000 | - |
| nova-compute | os-node6 | nova | enabled | up | 2014-08-03T15:37:00.000000 | - |
+------------------+----------+----------+---------+-------+----------------------------+-----------------+