问题描述
因此，我已经在Ubuntu 18.04 LTS PC中安装了Microstack。 好了，我可以从安装了miccostack的主机上SSH到我的VM，但是我的VM无法访问Internet。
我创建了一个名为osm的实例，并且已将一个浮动ip关联到它。
(openstack) server list
+--------------------------------------+------+--------+-----------------------------------+------------+-----------+
| ID | Name | Status | Networks | Image | Flavor |
+--------------------------------------+------+--------+-----------------------------------+------------+-----------+
| e12dc245-da35-424a-a9b2-06067e2f5555 | osm | ACTIVE | test=192.168.222.246,10.20.20.30 | ubuntu1804 | m1.medium |
+--------------------------------------+------+--------+-----------------------------------+------------+-----------+
这是我的网络列表
(openstack) network list
+--------------------------------------+----------+--------------------------------------+
| ID | Name | subnets |
+--------------------------------------+----------+--------------------------------------+
| c4968a12-662f-4ca6-8392-a6dc3f81e3ba | external | bcd86099-e801-477b-bf0c-978ec84bb708 |
| f83255dd-42d1-4fed-ad21-e9d1ec887fa8 | test | a7064161-4d11-4ca7-be55-47e5a6d92724 |
+--------------------------------------+----------+--------------------------------------+
每个网络都有其自己的子网，其中包含以下详细信息： 外部子网
(openstack) subnet show external-subnet
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| allocation_pools | 10.20.20.1-10.20.20.82 |
| cidr | 10.20.20.0/24 |
| created_at | 2020-07-06T08:06:26Z |
| description | |
| dns_nameservers | 8.8.4.4,8.8.8.8 |
| enable_dhcp | False |
| gateway_ip | 10.20.20.83 |
| host_routes | |
| id | bcd86099-e801-477b-bf0c-978ec84bb708 |
| ip_version | 4 |
| ipv6_address_mode | None |
| ipv6_ra_mode | None |
| location | Munch({'cloud': '','region_name': '','zone': None,'project': Munch({'id': '54ba9ffa36ca424fac395b6c774fd2a3','name': 'admin','domain_id': None,'domain_name': 'default'})}) |
| name | external-subnet |
| network_id | c4968a12-662f-4ca6-8392-a6dc3f81e3ba |
| prefix_length | None |
| project_id | 54ba9ffa36ca424fac395b6c774fd2a3 |
| revision_number | 22 |
| segment_id | None |
| service_types | |
| subnetpool_id | None |
| tags | |
| updated_at | 2020-10-12T10:49:35Z |
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
测试子网
(openstack) subnet show test-subnet
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| allocation_pools | 192.168.222.2-192.168.222.254 |
| cidr | 192.168.222.0/24 |
| created_at | 2020-07-06T08:06:20Z |
| description | |
| dns_nameservers | 8.8.4.4,8.8.8.8 |
| enable_dhcp | True |
| gateway_ip | 192.168.222.1 |
| host_routes | |
| id | a7064161-4d11-4ca7-be55-47e5a6d92724 |
| ip_version | 4 |
| ipv6_address_mode | None |
| ipv6_ra_mode | None |
| location | Munch({'cloud': '','domain_name': 'default'})}) |
| name | test-subnet |
| network_id | f83255dd-42d1-4fed-ad21-e9d1ec887fa8 |
| prefix_length | None |
| project_id | 54ba9ffa36ca424fac395b6c774fd2a3 |
| revision_number | 7 |
| segment_id | None |
| service_types | |
| subnetpool_id | None |
| tags | |
| updated_at | 2020-10-12T10:49:52Z |
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
这些是有关连接到外部和测试网络的路由器的信息
(openstack) router list
+--------------------------------------+-------------+--------+-------+----------------------------------+-------------+-------+
| ID | Name | Status | State | Project | distributed | HA |
+--------------------------------------+-------------+--------+-------+----------------------------------+-------------+-------+
| b935bc17-d379-4aa8-b040-5a770741de23 | test-router | ACTIVE | UP | 54ba9ffa36ca424fac395b6c774fd2a3 | False | False |
+--------------------------------------+-------------+--------+-------+----------------------------------+-------------+-------+
(openstack) router show test-router
+-------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+-------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| admin_state_up | UP |
| availability_zone_hints | |
| availability_zones | nova |
| created_at | 2020-07-06T08:06:28Z |
| description | |
| distributed | False |
| external_gateway_info | {"network_id": "c4968a12-662f-4ca6-8392-a6dc3f81e3ba","external_fixed_ips": [{"subnet_id": "bcd86099-e801-477b-bf0c-978ec84bb708","ip_address": "10.20.20.83"}],"enable_snat": true} |
| flavor_id | None |
| ha | False |
| id | b935bc17-d379-4aa8-b040-5a770741de23 |
| interfaces_info | [{"port_id": "6f935a4f-e1b0-41bf-aefb-dd6f9b929f69","ip_address": "192.168.222.1","subnet_id": "a7064161-4d11-4ca7-be55-47e5a6d92724"}] |
| location | Munch({'cloud': '','domain_name': 'default'})}) |
| name | test-router |
| project_id | 54ba9ffa36ca424fac395b6c774fd2a3 |
| revision_number | 23 |
| routes | |
| status | ACTIVE |
| tags | |
| updated_at | 2020-10-11T14:52:29Z |
+-------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
我的VM可以ping 192.168.222.1（网关），10.20.20.83（网关），10.20.20.1（主机-微型堆栈），但无法访问Internet。例如，我无法ping 8.8.8.8
ubuntu@osm:~$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
From 10.20.20.30 icmp_seq=1 Destination Host Unreachable
From 10.20.20.30 icmp_seq=2 Destination Host Unreachable
From 10.20.20.30 icmp_seq=3 Destination Host Unreachable
From 10.20.20.30 icmp_seq=4 Destination Host Unreachable
^C
--- 8.8.8.8 ping statistics ---
5 packets transmitted,0 received,+4 errors,100% packet loss,time 4055ms
pipe 3
我认为问题可能与端口10.20.20.30的状态为N / A有关，但我不确定
(openstack) port list
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------+--------+
| ID | Name | MAC Address | Fixed IP Addresses | Status |
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------+--------+
| 029f8880-9e7c-4b9e-a8e8-b27496ec542e | | fa:16:3e:2e:ac:b5 | ip_address='10.20.20.30',subnet_id='bcd86099-e801-477b-bf0c-978ec84bb708' | N/A |
| 6f935a4f-e1b0-41bf-aefb-dd6f9b929f69 | | fa:16:3e:0d:65:36 | ip_address='192.168.222.1',subnet_id='a7064161-4d11-4ca7-be55-47e5a6d92724' | ACTIVE |
| 9c46a483-ee64-4d0a-8eb4-aa2b5cc083b7 | | fa:16:3e:66:da:8a | ip_address='10.20.20.83',subnet_id='bcd86099-e801-477b-bf0c-978ec84bb708' | ACTIVE |
| c2444040-b8d5-4009-8019-10779ecb7d92 | | fa:16:3e:4e:93:c8 | ip_address='192.168.222.246',subnet_id='a7064161-4d11-4ca7-be55-47e5a6d92724' | ACTIVE |
| cc79a6f2-a4c1-47de-b27b-9a2018dab595 | | fa:16:3e:e4:17:32 | ip_address='192.168.222.2',subnet_id='a7064161-4d11-4ca7-be55-47e5a6d92724' | ACTIVE |
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------+--------+
在搜索此问题时，我发现对主机（安装了Microstack的计算机）执行这些命令可能会解决此问题
sudo iptables -t nat -A POSTROUTING -s 10.20.20.1/24 ! -d 10.20.20.1/24 -j MASQUERADE
sudo sysctl net.ipv4.ip_forward=1
但是不幸的是没有任何反应，我仍然遇到这个问题。 任何建议都会很有帮助。
解决方法
案例
我遇到服务器断电，导致ping浮动ip，有时超时有时正常。
当我执行“openstack port list”时检查端口详细信息，端口状态为N/A。在仪表板中，端口状态为 creating
解决方案
从 DHCP 更新一个 ip，并将浮动 ip 与虚拟机重新绑定。这将保持浮动IP。
操作步骤
-
分离接口，选择虚拟机内部接口。
-
连接接口并选择网络。
-
浮动 IP 关联虚拟机。
所以，我从来没有弄清楚那里真正的问题是什么。但我进行了一些更改，终于对我有用。 所以：
1。我卸载了PC上的微型堆栈。
public int[] GetRandomNumber(int from,int to)
{
Random r = new Random();
List<KeyValuePair<int,int>> numbers = new List<KeyValuePair<int,int>>();
for(int n = from; n <= to; n++)
{
numbers.Add(new KeyValuePair<int,int>(r.Next(1,int.MaxValue),n));
}
return numbers.OrderBy(o => o.Key).Select(i => i.Value).ToArray();
}
2。我安装了在microstack.run网站上找到的最新微型堆栈。就我而言 beta和devmode标志，但我建议您访问microstack.run以检查什么 最推荐的微型堆栈
sudo snap remove microstack --purge
3。在安装微型堆栈时，我的网络配置保持不变。我做了这些更改：
sudo snap install microstack --beta --devmode
sudo microstack init --auto --control
4。我在主机上的bugs.launchpad.net/microstack/+bug/1812415上运行了这些命令：
(openstack) subnet set --dhcp external-subnet
(openstack) subnet set --dhcp test-subnet
(openstack) subnet set --dns-nameserver 8.8.8.8 external-subnet
(openstack) subnet set --dns-nameserver 8.8.8.8 test-subnet
(openstack) network set --share external
(openstack) network set --share test
5。我创建了映像并启动了一个新实例。最后，我设法ping 8.8.8.8并可以访问Internet。
sudo iptables -t nat -A POSTROUTING -s 10.20.20.1/24 ! -d 10.20.20.1/24 -j MASQUERADE
sudo sysctl net.ipv4.ip_forward=1
在这一点上，我想提一下，我保持了安全组的规则。
我希望所有这些对其他人也有帮助。