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VM can't ping to tenant router gateway

asked 2016-10-06 02:45:26 -0600

Steve Jobs gravatar image

updated 2016-10-07 05:34:14 -0600

Hi,

I've deplyoed openstack KILO in three VMs.

controller Node : eth0: 192.168.122.74
compute Node    : eth0: 192.168.122.168  eth1: 10.0.1.31
network Node    : eth0: 192.168.122.126  eth1: 10.0.1.21  eth2: unnumbered

I followed all the steps with successful result as per : http://docs.openstack.org/kilo/install-guide/install/apt/content/ch_basic_environment.html (http://docs.openstack.org/kilo/instal...)

I'm having an issue that the created VM is not able to ping it's tenant router gateway. Ping to external router works from external network.

root@controller:/home/user# nova service-list

+----+------------------+------------+----------+---------+-------+----------------------------+-----------------+
| Id | Binary           | Host       | Zone     | Status  | State | Updated_at                 | Disabled Reason |
+----+------------------+------------+----------+---------+-------+----------------------------+-----------------+
| 1  | nova-cert        | controller | internal | enabled | up    | 2016-10-05T10:42:34.000000 | -               |
| 2  | nova-consoleauth | controller | internal | enabled | up    | 2016-10-05T10:42:25.000000 | -               |
| 3  | nova-scheduler   | controller | internal | enabled | up    | 2016-10-05T10:42:26.000000 | -               |
| 4  | nova-conductor   | controller | internal | enabled | up    | 2016-10-05T10:42:26.000000 | -               |
| 6  | nova-compute     | compute    | nova     | enabled | up    | 2016-10-05T10:42:29.000000 | -               |
+----+------------------+------------+----------+---------+-------+----------------------------+-----------------+

root@controller:/home/user# neutron agent-list

+--------------------------------------+--------------------+---------+-------+----------------+---------------------------+
| id                                   | agent_type         | host    | alive | admin_state_up | binary                    |
+--------------------------------------+--------------------+---------+-------+----------------+---------------------------+
| 1819bade-aa9b-4465-a0f3-ce0b233f6334 | Open vSwitch agent | network | :-)   | True           | neutron-openvswitch-agent |
| 2e3489df-3ec7-426e-97db-3d8b62a8d59a | Metadata agent     | network | :-)   | True           | neutron-metadata-agent    |
| 74fad5b9-ae8d-48eb-abb5-9eac20b94b81 | DHCP agent         | network | :-)   | True           | neutron-dhcp-agent        |
| e408958f-fefa-42c1-86fa-1744eedc7b63 | L3 agent           | network | :-)   | True           | neutron-l3-agent          |
| f77f3c24-13c1-4a57-9ef3-45e1241d461e | Open vSwitch agent | compute | :-)   | True           | neutron-openvswitch-agent |
+--------------------------------------+--------------------+---------+-------+----------------+---------------------------+

root@controller:/home/user# neutron net-list

+--------------------------------------+----------+---------------------------------------------------+
| id                                   | name     | subnets                                           |
+--------------------------------------+----------+---------------------------------------------------+
| cf99345f-4f1d-4ab9-a959-8d5f9db6424c | demo-net | 313b8642-b3d7-49df-af1e-c9e10529fdae 19.16.1.0/24 |
| d31bb7e0-ecf2-4c4c-ab53-6ee9c63a9f5e | ext-net  | 42ba2b5d-3b30-4136-8086-c0103faff475 200.1.0.0/24 |
+--------------------------------------+----------+---------------------------------------------------+

root@controller:/home/user# nova list

+--------------------------------------+----------------+--------+------------+-------------+---------------------------------+
| ID                                   | Name           | Status | Task State | Power State | Networks                        |
+--------------------------------------+----------------+--------+------------+-------------+---------------------------------+
| 5bc3773c-9054-4963-a13d-d13dc65af467 | demo-instance1 | ACTIVE | -          | Running     | demo-net=19.16.1.7, 200.1.0.102 |
+--------------------------------------+----------------+--------+------------+-------------+---------------------------------+

root@controller:/home/user/firefox# nova console-log demo-instance1

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 3.2.0-80-virtual (buildd@batsu) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #116-Ubuntu SMP Mon Mar 23 17:28:52 UTC 2015 (Ubuntu 3.2.0-80.116-virtual 3.2.68)
[    0.000000] Command line: LABEL=cirros-rootfs ro console=tty1 console=ttyS0
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   Centaur CentaurHauls
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
[    0.000000]  BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
[    0.000000]  BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
[    0.000000]  BIOS-e820: 0000000000100000 - 000000001ffe0000 (usable)
[    0.000000]  BIOS-e820: 000000001ffe0000 - 0000000020000000 (reserved)
[    0.000000]  BIOS-e820: 00000000feffc000 - 00000000ff000000 (reserved)
[    0.000000]  BIOS-e820: 00000000fffc0000 - 0000000100000000 (reserved)
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] SMBIOS 2.8 present.
[    0.000000] No AGP bridge found
[    0.000000] last_pfn = 0x1ffe0 max_arch_pfn = 0x400000000
[    0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
[    0.000000] found SMP MP-table at [ffff8800000f0eb0] f0eb0
[    0.000000] init_memory_mapping: 0000000000000000-000000001ffe0000
[    0.000000] RAMDISK: 1fc72000 - 1ffd0000
[    0.000000] ACPI: RSDP 00000000000f0cb0 00014 (v00 BOCHS )
[    0.000000] ACPI: RSDT 000000001ffe181b 00030 (v01 BOCHS  BXPCRSDT 00000001 BXPC 00000001)
[    0.000000] ACPI: FACP 000000001ffe0e48 00074 (v01 BOCHS  BXPCFACP 00000001 BXPC 00000001)
[    0.000000] ACPI: DSDT 000000001ffe0040 00E08 (v01 BOCHS  BXPCDSDT 00000001 BXPC 00000001)
[    0.000000] ACPI: FACS 000000001ffe0000 00040
[    0.000000] ACPI: SSDT 000000001ffe0ebc 008E7 (v01 ...
(more)
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Comments

please share nova-compute.log & neutron server logs

Praveen N gravatar imagePraveen N ( 2016-10-07 03:04:34 -0600 )edit

Hi Praveen N. Thanks for reply,

Question is edited with the logs you've aked.

Steve Jobs gravatar imageSteve Jobs ( 2016-10-07 05:35:43 -0600 )edit

3 answers

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answered 2018-06-24 04:56:06 -0600

novainfinite gravatar image

updated 2018-09-11 01:12:19 -0600

ip netns should show 3 ports

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answered 2017-10-25 03:23:35 -0600

mrshaggis gravatar image

I have the same problem, using GRE tenant network. I have noticed in my setup that the vif-bind fails. You can see this in server.log, dhcp_agent.log. Basically OVS fails to create the dnsmasq listening process....still not sure why.....did you ever resolve this problem?

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answered 2016-10-06 16:36:55 -0600

VSR gravatar image

updated 2016-10-06 20:44:35 -0600

Looks like the Cirros VM dod not get IP address assigned. Can you login to the instance and check? ifconfig -a arp -a ping from the VM. Ensure DHCP is enabled for the Private network. -VJ.

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Hi, VSR Thanks for reply.

I logged in VM through novnc and checked, but VM doesn't get ant IP, no arp entry present at all. Ping from VM to gateway not working as I raised in a question.

Steve Jobs gravatar imageSteve Jobs ( 2016-10-07 05:39:09 -0600 )edit

Can you please go back and chack if you have enabled DNS service when created the tenant private network?

VSR gravatar imageVSR ( 2016-10-09 16:03:26 -0600 )edit

Yes, This is how I create tenant network.

neutron subnet-create demo-net 19.16.1.0/24 \
--name demo-subnet --dns-nameserver 8.8.4.4 --gateway 19.16.1.1
Steve Jobs gravatar imageSteve Jobs ( 2016-10-11 01:49:06 -0600 )edit

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Asked: 2016-10-06 02:43:52 -0600

Seen: 543 times

Last updated: Sep 11