So I have installes Microstack in an Ubuntu 18.04 LTS PC. Well i can ssh to my VM from the host(where miccostack is installed), but my VM cannot access the Internet.
I have created an instance named osm and i have associated a floating ip to it.
(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 |
+--------------------------------------+------+--------+-----------------------------------+------------+-----------+
This is my network list
(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 |
+--------------------------------------+----------+--------------------------------------+
Each network has its own subnet with these details: external-subnet
(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 |
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
test-subnet
(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': '', 'region_name': '', 'zone': None, 'project': Munch({'id': '54ba9ffa36ca424fac395b6c774fd2a3', 'name': 'admin', 'domain_id': None, '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 |
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
These are the information about the router which is connected to the external and test network
(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': '', 'region_name': '', 'zone': None, 'project': Munch({'id': '54ba9ffa36ca424fac395b6c774fd2a3', 'name': 'admin', 'domain_id': None, 'domain_name': 'default'})}) |
| name | test-router |
| project_id | 54ba9ffa36ca424fac395b6c774fd2a3 |
| revision_number | 23 |
| routes | |
| status | ACTIVE |
| tags | |
| updated_at | 2020-10-11T14:52:29Z |
+-------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
My VM can ping 192.168.222.1(gateway),10.20.20.83(gateway),10.20.20.1(host-microstack) but cannot access the internet. For example i cannot 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
I assume that maybe the problem is related to the fact that the status of the port at 10.20.20.30 is N/A, but I am not sure
(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 |
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------+--------+
While I was searching for this issue I found that executing these commands to the host machine(where Microstack is installed) may fix the problem
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
But unfortunatelly nothing happened and I still have this issue. Any piece of advice would be really helpful.
Case
I encountered a server power failure, resulting ping floating ip, sometime timeout and sometime ok.
when I execute "openstack port list" check the port detail, port status is
N/A. In Dashboard the port status iscreatingSolution
renew an ip from DHCP, and re-bind floating ip with the vm. That will keep the floating ip.
Operation steps
Separate the interface and select the internal interface of the virtual machine.
Connect the interface and select the network.
Floating IP associated virtual machine.