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政协网站建设,湛江百度网站快速排名,本地电脑做网站服务器,软件下载网站如何履行安全管理义务确保提供的软件不含恶意程序前言： openstack的部署和使用是难度比较大的，难免会出现各种各样的问题，因此，本文将把一些在部署和使用openstack社区版时出现的错误做一个记录，并就每一个错误分析和解决问题。（尽量记录比较经典的错误&a…

前言：

openstack的部署和使用是难度比较大的，难免会出现各种各样的问题，因此，本文将把一些在部署和使用openstack社区版时出现的错误做一个记录，并就每一个错误分析和解决问题。（尽量记录比较经典的错误，太弱智的那些就不记录了）

一，

错误前情回顾：

创建虚拟机实例失败

创建实例的命令是：

openstack server create  --flavor m1.tiny --image Centos7   --nic net-id=688a0356-4f2b-4029-b49e-a11bbdbedf0b --key-name mykey --security-group e5f115d2-3c65-4bc5-89db-b9f725ee81db    centos7-init2

错误： 实例 "centos7-init2" 执行所请求操作失败，实例处于错误状态。: 请稍后再试 [错误: Exceeded maximum number of retries. Exhausted all hosts available for retrying build failures for instance 1bd5d1af-17b1-4524-9f9c-6be299d68293.].

在dashboard内，查看实例详情，可以看到错误日志：


消息Exceeded maximum number of retries. Exhausted all hosts available for retrying build failures for instance 17fe6f00-4560-476a-a79b-e6f62d866155.
编码500
详情Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/nova/conductor/manager.py", line 624, in build_instances raise exception.MaxRetriesExceeded(reason=msg) MaxRetriesExceeded: Exceeded maximum number of retries. Exhausted all hosts available for retrying build failures for instance 17fe6f00-4560-476a-a79b-e6f62d866155. 
已创建Feb. 11, 2023, 5:23 p.m.

虚拟机实例状态是：

解析：

错误代码是500，并且虚拟机没有获取到fix ip地址，上面最后一图IP地址那是空缺的

以上表明错误发生在网络层面，错误提示是在尝试N次后，虚拟机实例仍无法调度，因此，错误日志必定在nova这个服务内有所体现

因此，在所有包含nova的节点执行以下命令，快速查找错误：

grep "ERROR" /var/log/nova/*

在其中一个计算节点，发现如下日志：

倒数第二行提示security group没有被发现

/var/log/nova/nova-compute.log:2023-02-11 16:49:29.901 970 ERROR nova.compute.manager [instance: 1bd5d1af-17b1-4524-9f9c-6be299d68293]   File "/usr/lib/python2.7/site-packages/nova/network/neutronv2/api.py", line 1042, in allocate_for_instance
/var/log/nova/nova-compute.log:2023-02-11 16:49:29.901 970 ERROR nova.compute.manager [instance: 1bd5d1af-17b1-4524-9f9c-6be299d68293]     instance, neutron, security_groups)
/var/log/nova/nova-compute.log:2023-02-11 16:49:29.901 970 ERROR nova.compute.manager [instance: 1bd5d1af-17b1-4524-9f9c-6be299d68293]   File "/usr/lib/python2.7/site-packages/nova/network/neutronv2/api.py", line 829, in _process_security_groups
/var/log/nova/nova-compute.log:2023-02-11 16:49:29.901 970 ERROR nova.compute.manager [instance: 1bd5d1af-17b1-4524-9f9c-6be299d68293]     security_group_id=security_group)
/var/log/nova/nova-compute.log:2023-02-11 16:49:29.901 970 ERROR nova.compute.manager [instance: 1bd5d1af-17b1-4524-9f9c-6be299d68293] SecurityGroupNotFound: Security group e5f115d2-3c65-4bc5-89db-b9f725ee81db not found.
/var/log/nova/nova-compute.log:2023-02-11 16:49:29.901 970 ERROR nova.compute.manager [instance: 1bd5d1af-17b1-4524-9f9c-6be299d68293]

结合实例启动的时间和日志文件内的上下文，可以确定原因是security group没有找到的原因

查看安全组：

[root@openstack1 ~]# openstack security group list
+--------------------------------------+---------+------------------------+----------------------------------+------+
| ID                                   | Name    | Description            | Project                          | Tags |
+--------------------------------------+---------+------------------------+----------------------------------+------+
| 2035d43a-0e81-4257-bd23-13af431b9f91 | default | Default security group | 205ce8addd9444c893bd62244bcdae78 | []   |
| 5b1b71d7-5e24-4011-82ca-0ddabfd32e8a | default | Default security group |                                  | []   |
| e5f115d2-3c65-4bc5-89db-b9f725ee81db | default | Default security group | ae2263d201c0437788c85f1178b91dbe | []   |
+--------------------------------------+---------+------------------------+----------------------------------+------+
[root@openstack1 ~]# openstack project list
+----------------------------------+---------+
| ID                               | Name    |
+----------------------------------+---------+
| 205ce8addd9444c893bd62244bcdae78 | admin   |
| ae2263d201c0437788c85f1178b91dbe | service |
+----------------------------------+---------+

这里就很奇怪了，安全组可以看到，但openstack创建实例的时候又找不到了，可能和前面调整了网络有关系，

解决方案：

要么重建安全组，要么使用第一个也就是admin项目的安全组，因为是用的admin登陆的openstack

删除实例，重新创建，创建的时候使用2035d43a-0e81-4257-bd23-13af431b9f91 这个安全组：

[root@openstack1 ~]# openstack server delete centos7-init2
[root@openstack1 ~]# openstack server create  --flavor m1.tiny --image Centos7   --nic net-id=688a0356-4f2b-4029-b49e-a11bbdbedf0b --key-name mykey --security-group 2035d43a-0e81-4257-bd23-13af431b9f91   --user-data /tmp/centos.config --config-drive true centos7-init2
+-------------------------------------+------------------------------------------------+
| Field                               | Value                                          |
+-------------------------------------+------------------------------------------------+
| OS-DCF:diskConfig                   | MANUAL                                         |
| OS-EXT-AZ:availability_zone         |                                                |
| OS-EXT-SRV-ATTR:host                | None                                           |
| OS-EXT-SRV-ATTR:hypervisor_hostname | None                                           |
| OS-EXT-SRV-ATTR:instance_name       |                                                |
| OS-EXT-STS:power_state              | NOSTATE                                        |
| OS-EXT-STS:task_state               | scheduling                                     |
| OS-EXT-STS:vm_state                 | building                                       |
| OS-SRV-USG:launched_at              | None                                           |
| OS-SRV-USG:terminated_at            | None                                           |
| accessIPv4                          |                                                |
| accessIPv6                          |                                                |
| addresses                           |                                                |
| adminPass                           | YpnXPX8xmK7T                                   |
| config_drive                        | True                                           |
| created                             | 2023-02-11T09:18:31Z                           |
| flavor                              | m1.tiny (1)                                    |
| hostId                              |                                                |
| id                                  | 9d24d3d9-e42c-4267-816e-ad8414cd3c7f           |
| image                               | Centos7 (2b672c8f-75bf-4fe0-8468-37309563025a) |
| key_name                            | mykey                                          |
| name                                | centos7-init2                                  |
| progress                            | 0                                              |
| project_id                          | 205ce8addd9444c893bd62244bcdae78               |
| properties                          |                                                |
| security_groups                     | name='2035d43a-0e81-4257-bd23-13af431b9f91'    |
| status                              | BUILD                                          |
| updated                             | 2023-02-11T09:18:31Z                           |
| user_id                             | 74bc206609e04092b698698d944e922a               |
| volumes_attached                    |                                                |
+-------------------------------------+------------------------------------------------+

再次查看实例状态，可以看到没有错误了。dashboard里也看不到错误了：

[root@openstack1 ~]# openstack server list
+--------------------------------------+---------------+---------+--------------------------+---------+---------+
| ID                                   | Name          | Status  | Networks                 | Image   | Flavor  |
+--------------------------------------+---------------+---------+--------------------------+---------+---------+
| 9d24d3d9-e42c-4267-816e-ad8414cd3c7f | centos7-init2 | ACTIVE  | provider=192.168.123.160 | Centos7 | m1.tiny |

二，

前情回顾：

No valid host was found.

还是创建虚拟机失败

错误代码仍然是500

消息No valid host was found. 
编码500
详情Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/nova/conductor/manager.py", line 1271, in schedule_and_build_instances instance_uuids, return_alternates=True) File "/usr/lib/python2.7/site-packages/nova/conductor/manager.py", line 784, in _schedule_instances return_alternates=return_alternates) File "/usr/lib/python2.7/site-packages/nova/scheduler/client/__init__.py", line 50, in select_destinations instance_uuids, return_objects, return_alternates) File "/usr/lib/python2.7/site-packages/nova/scheduler/client/__init__.py", line 35, in __run_method return getattr(self.instance, __name)(*args, **kwargs) File "/usr/lib/python2.7/site-packages/nova/scheduler/client/query.py", line 42, in select_destinations instance_uuids, return_objects, return_alternates) File "/usr/lib/python2.7/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations return cctxt.call(ctxt, 'select_destinations', **msg_args) File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/client.py", line 179, in call retry=self.retry) File "/usr/lib/python2.7/site-packages/oslo_messaging/transport.py", line 133, in _send retry=retry) File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 645, in send call_monitor_timeout, retry=retry) File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 636, in _send raise result NoValidHost_Remote: No valid host was found. Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 229, in inner return func(*args, **kwargs) File "/usr/lib/python2.7/site-packages/nova/scheduler/manager.py", line 154, in select_destinations raise exception.NoValidHost(reason="") NoValidHost: No valid host was found.

错误分析：

这个错误比较常见的，也没什么必要查看日志，基本都是系统资源不足造成的

解决方案：

删除不使用的多余的实例，在重新创建即可，或者是实例类型用错了导致资源不够。

例如：

[root@openstack1 ~]# openstack flavor list
+----+-----------+-------+------+-----------+-------+-----------+
| ID | Name      |   RAM | Disk | Ephemeral | VCPUs | Is Public |
+----+-----------+-------+------+-----------+-------+-----------+
| 0  | m1.nano   |    64 |    1 |         0 |     1 | True      |
| 1  | m1.tiny   |  1024 |   50 |         0 |     1 | True      |
| 2  | m1.small  |  2048 |  500 |         0 |     1 | True      |
| 3  | m1.medium |  4096 |  500 |         0 |     2 | True      |
| 4  | m1.large  |  8192 |  500 |         0 |     4 | True      |
| 5  | m1.xlarge | 16384 |  500 |         0 |     8 | True      |
+----+-----------+-------+------+-----------+-------+-----------+

整个系统才100G硬盘，16G内存，创建实例的时候指定m1.xlarge 这个实例规格必定是创建不了并报以上错误的。