[openstack-dev] Couldn't ping/ssh cirros instance using its floating ip
Aishwarya Thangappa_Professional
aishwarya.thangappa at gmail.com
Mon Nov 9 23:34:12 UTC 2015
Hi there,
In a fresh devstack(master branch) install,
1. I booted up a cirros instance and associated it with a floating ip.
2. Created a security group rule to allow tcp port 22 and associated it with the nova instance
3. From the qrouter namespace, I can ping both the private and fip address of the instance.
4. But, couldn’t ssh into the instance from the external network using its fip.
neutron net-list
+--------------------------------------+---------+----------------------------------------------------------+
| id | name | subnets |
+--------------------------------------+---------+----------------------------------------------------------+
| 376357b1-6abe-46c1-844b-548a051391d5 | public | 41b86431-41d6-4503-8329-767f84bad4d5 172.24.4.0/24 |
| | | 79f0bf72-8c98-478b-a463-b6e3a101e6b7 2001:db8::/64 |
| ebe713c9-5064-48ec-9094-e44e150d36ad | private | c7ebd45c-5a1f-4d97-a90e-b221f19c7177 10.0.0.0/24 |
| | | d7aac86f-0b2c-4dd4-88cf-246bfb58006e fd69:7a94:27b7::/64 |
+--------------------------------------+---------+—————————————————————————-----------------------------————+
$ neutron router-list
+--------------------------------------+---------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+-------+
| id | name | external_gateway_info | distributed | ha |
+--------------------------------------+---------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+-------+
| 46715086-3f9c-4fb1-91b4-b41da24baa2f | router1 | {"network_id": "376357b1-6abe-46c1-844b-548a051391d5", "enable_snat": true, "external_fixed_ips": [{"subnet_id": "41b86431-41d6-4503-8329-767f84bad4d5", "ip_address": "172.24.4.2"}, {"subnet_id": "79f0bf72-8c98-478b-a463-b6e3a101e6b7", "ip_address": "2001:db8::1"}]} | True | False |
+--------------------------------------+---------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+-------+
$ neutron security-group-rule-list
+--------------------------------------+----------------+-----------+-----------+---------------+-----------------+
| id | security_group | direction | ethertype | protocol/port | remote |
+--------------------------------------+----------------+-----------+-----------+---------------+-----------------+
| 1cfb9a69-61e0-4df3-b04c-f9f9f4a54cc3 | default | egress | IPv4 | any | any |
| 4afe5008-c192-4582-95c8-21b1f64ab2a5 | default | ingress | IPv6 | any | default (group) |
| 5ce1e34d-7b9d-41d8-9a15-94711824ae68 | secgroup1 | ingress | IPv4 | 22/tcp | any |
| 6b3a8008-b446-4004-a72a-6ea2c9bbf375 | default | egress | IPv6 | any | any |
| 7feb5969-5f9d-4525-93a3-a108db59f65b | default | egress | IPv6 | any | any |
| 7ff6a82f-6c8c-4bb5-b893-d06272b0d69b | default | ingress | IPv4 | any | default (group) |
| 90f385c9-de19-4ede-b4ef-bf199537b49b | secgroup1 | egress | IPv6 | any | any |
| c21ed80d-fbee-4db6-8518-60a1070aff20 | secgroup1 | egress | IPv4 | 22/tcp | any |
| c3d1f6ea-b7c4-47ea-ace3-f9b3b1bf8d25 | default | egress | IPv4 | any | any |
| dc09a10a-37db-4a33-9abc-00798221254e | secgroup1 | egress | IPv4 | any | any |
| df4d7930-6ce0-43c8-996f-ced126c7cba0 | default | ingress | IPv4 | any | default (group) |
| e0d84fea-e47c-48f6-a29b-d41231674256 | default | ingress | IPv6 | any | default (group) |
+--------------------------------------+----------------+-----------+-----------+---------------+-----------------+
$ nova show node1
+--------------------------------------+-----------------------------------------------------------------+
| Property | Value |
+--------------------------------------+-----------------------------------------------------------------+
| OS-DCF:diskConfig | MANUAL |
| OS-EXT-AZ:availability_zone | nova |
| OS-EXT-SRV-ATTR:host | ubuntu |
| OS-EXT-SRV-ATTR:hostname | node1 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | ubuntu |
| OS-EXT-SRV-ATTR:instance_name | instance-00000002 |
| OS-EXT-SRV-ATTR:kernel_id | |
| OS-EXT-SRV-ATTR:launch_index | 0 |
| OS-EXT-SRV-ATTR:ramdisk_id | |
| OS-EXT-SRV-ATTR:reservation_id | r-nokf6xx0 |
| OS-EXT-SRV-ATTR:root_device_name | /dev/vda |
| OS-EXT-SRV-ATTR:user_data | - |
| OS-EXT-STS:power_state | 1 |
| OS-EXT-STS:task_state | - |
| OS-EXT-STS:vm_state | active |
| OS-SRV-USG:launched_at | 2015-11-09T21:59:13.000000 |
| OS-SRV-USG:terminated_at | - |
| accessIPv4 | |
| accessIPv6 | |
| config_drive | True |
| created | 2015-11-09T21:59:03Z |
| flavor | m1.tiny (1) |
| hostId | 3cd3087bf1edbd27ef36a03a5b862b810aa8653fed924c9efd6dca8b |
| id | c936d684-5a20-4842-b47d-f6c336eb4e96 |
| image | cirros-0.3.3-x86_64-disk (cc56d0b4-d143-4859-971d-5ef6ba9e2820) |
| key_name | - |
| metadata | {} |
| name | node1 |
| os-extended-volumes:volumes_attached | [] |
| private network | 10.0.0.4, fd69:7a94:27b7:0:f816:3eff:fe39:59ac, 172.24.4.5 |
| progress | 0 |
| security_groups | default, secgroup1 |
| status | ACTIVE |
| tenant_id | 5a93452f68c04785aff04fb4572f7472 |
| updated | 2015-11-09T21:59:13Z |
| user_id | 124d5155bc9742d2a3f7e018ada5bd07 |
+--------------------------------------+——————————————————————————---------------------------------——————+
$ sudo ip route add 172.24.4.0/24 dev br-ex
$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.2.2 0.0.0.0 UG 0 0 0 eth0
10.0.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
172.24.4.0 0.0.0.0 255.255.255.0 U 0 0 0 br-ex
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
$ ip netns
snat-46715086-3f9c-4fb1-91b4-b41da24baa2f
qrouter-46715086-3f9c-4fb1-91b4-b41da24baa2f
qdhcp-ebe713c9-5064-48ec-9094-e44e150d36ad
$ sudo ip netns exec qrouter-46715086-3f9c-4fb1-91b4-b41da24baa2f ssh cirros at 10.0.0.4
cirros at 10.0.0.4's password:
$ exit
Connection to 10.0.0.4 closed.
$ sudo ip netns exec qrouter-46715086-3f9c-4fb1-91b4-b41da24baa2f ssh cirros at 172.24.4.5
The authenticity of host '172.24.4.5 (172.24.4.5)' can't be established.
RSA key fingerprint is 4a:96:f0:ea:1f:d0:4e:bb:0f:3f:74:f8:b4:3c:7e:75.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '172.24.4.5' (RSA) to the list of known hosts.
cirros at 172.24.4.5's password:
$ exit
Connection to 172.24.4.5 closed.
$ sudo ip netns exec qrouter-46715086-3f9c-4fb1-91b4-b41da24baa2f ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: rfp-46715086-3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether ca:fb:c6:7d:05:36 brd ff:ff:ff:ff:ff:ff
inet 169.254.31.28/31 scope global rfp-46715086-3
valid_lft forever preferred_lft forever
inet 172.24.4.5/32 brd 172.24.4.5 scope global rfp-46715086-3
valid_lft forever preferred_lft forever
inet6 fe80::c8fb:c6ff:fe7d:536/64 scope link
valid_lft forever preferred_lft forever
6: qr-f97ba294-61: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default
link/ether fa:16:3e:db:4e:c1 brd ff:ff:ff:ff:ff:ff
inet6 fd69:7a94:27b7::1/64 scope global
valid_lft forever preferred_lft forever
inet6 fe80::f816:3eff:fedb:4ec1/64 scope link
valid_lft forever preferred_lft forever
8: qr-2eedb07a-73: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default
link/ether fa:16:3e:36:70:4d brd ff:ff:ff:ff:ff:ff
inet 10.0.0.1/24 brd 10.0.0.255 scope global qr-2eedb07a-73
valid_lft forever preferred_lft forever
inet6 fe80::f816:3eff:fe36:704d/64 scope link
valid_lft forever preferred_lft forever
$ sudo ip netns exec qrouter-46715086-3f9c-4fb1-91b4-b41da24baa2f route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 qr-2eedb07a-73
169.254.31.28 0.0.0.0 255.255.255.254 U 0 0 0 rfp-46715086-3
Can some one please point out what is going wrong here? Thank you!
-Aishwarya.
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