Open Stack

When you manually setup IP addressing on the VMs, are they able to ping
each other?
The issue you are describing is compatible with a scenario where both the
dhcp agent and the l3 agent on the same "network node", and that node gets
disconnected from the rest of the fabric.

This could be for several reasons. At the control plane level, the l2 agent
might be not operating correctly (even if its reports an "up" status); at
the data plane level instead l3 connectivity with the network node might be
interrupted. The l2 agent log on the network node might be able to answer
the question concerning whether dhcp and router interface are being wired
correctly.

Salvatore


On 23 July 2015 at 09:49, Ignazio Cassano <ignaziocassano at gmail.com> wrote:

> Hi guys,
> I installed openstack kilo last week and it worked fine for some days.
> On yesterday my virtual machines stop to aquire dhcp address and if I set
> address
> manually they cannot ping either dhcp server or gateway.
>
> My environment is made up of:
>
> 1 controller node
> 1 neutron netork node
> 1 kvm  computing node
> 2 object storage nodes
> 2 lvm iscsi block storage nodes
>
> If I run "neutron agent-list" on controller node it reports the following
> lines:
>
> +--------------------------------------+--------------------+-----------------+-------+----------------+---------------------------+
> | id                                   | agent_type         |
> host            | alive | admin_state_up | binary                    |
>
> +--------------------------------------+--------------------+-----------------+-------+----------------+---------------------------+
> | 7e18abbf-8c6b-4463-9833-44b45dc7fec8 | Open vSwitch agent |
> OpStk-NetNode   | :-)   | True           | neutron-openvswitch-agent |
> | 7e67678a-5eb1-4d8b-9a44-f084187ddb03 | Open vSwitch agent |
> OpStk-CompNode1 | :-)   | True           | neutron-openvswitch-agent |
> | 87ebbf56-8405-4b0d-84b4-a3ad7e3c7a0c | L3 agent           |
> OpStk-NetNode   | :-)   | True           | neutron-l3-agent          |
> | ac6d21c3-ab38-451e-9393-9d38ea1058ec | DHCP agent         |
> OpStk-NetNode   | :-)   | True           | neutron-dhcp-agent        |
> | ebb2b82e-1cba-4a69-b943-bf69e7c8a478 | Metadata agent     |
> OpStk-NetNode   | :-)   | True           | neutron-metadata-agent    |
>
> +--------------------------------------+--------------------+-----------------+-------+----------------+---------------------------+
>
> Could anyone help me ?
>
> Many thanks and regards
> Ignazio
>
>
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>
>
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