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[Bug 1478925] Re: Instances on the same compute node unable to connect to each other's ports

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: "Davanum Srinivas \(DIMS\)" <davanum@xxxxxxxxx>
Date: Wed, 29 Jul 2015 20:09:01 -0000
Reply-to: Bug 1478925 <1478925@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Is this a Nova issue or Neutron issue? :)

** Also affects: neutron
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1478925

Title:
  Instances on the same compute node unable to connect to each other's
  ports

Status in neutron:
  New
Status in OpenStack Compute (nova):
  New

Bug description:
  Openstack version: Icehouse 2014.1.5
  Nova version: 2.17.0

  I have two instances created on the same compute node connected to a
  virtual network. I am trying to connect via the virtual network from
  one instance to another to some port to which no process is listening
  to and I am expecting to get a 'Connection refused' message from the
  kernel.

  This works as expected with any two instances on the same virtual
  network that are located on different compute nodes, however, if the
  instances are created on the same compute node, the connection times
  out.

  I have noticed that a temporary fix has been to tamper with the input
  iptables rules by moving the rule which drops packets in an invalid
  state after the rules for the other instances are defined, as such:

  From:
  -A neutron-openvswi-ic05bb97b-2 -m state --state INVALID -j DROP
  -A neutron-openvswi-ic05bb97b-2 -m state --state RELATED,ESTABLISHED -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -p tcp -m tcp --dport 22 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -p tcp -m tcp --dport 35357 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -p tcp -m tcp --dport 80 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -p tcp -m tcp --dport 5000 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -p tcp -m tcp -m multiport --dports 9000:9999 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.41/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.25/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.45/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.17/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 4.0.0.12/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.36/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.43/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.40/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.35/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 6.0.0.3/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.28/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 4.0.0.10/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.22/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.44/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.47/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.44/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.39/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.20/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.26/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.38/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.29/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.48/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 6.0.0.6/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.15/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.24/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 4.0.0.11/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.45/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.54/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.13/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.43/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.33/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.42/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.46/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.42/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.23/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.50/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.12/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.16/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.14/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.37/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 5.0.0.7/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.41/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.46/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.48/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.30/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.21/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.27/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 5.0.0.8/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 6.0.0.5/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 5.0.0.6/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.49/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -p icmp -j RETURN

  To:
  -A neutron-openvswi-ic05bb97b-2 -m state --state RELATED,ESTABLISHED -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -p tcp -m tcp --dport 22 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -p tcp -m tcp --dport 35357 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -p tcp -m tcp --dport 80 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -p tcp -m tcp --dport 5000 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -p tcp -m tcp -m multiport --dports 9000:9999 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.41/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.25/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.45/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.17/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 4.0.0.12/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.36/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.43/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.40/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.35/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 6.0.0.3/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.28/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 4.0.0.10/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.22/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.44/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.47/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.44/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.39/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.20/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.26/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.38/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.29/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.48/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 6.0.0.6/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.15/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.24/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 4.0.0.11/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.45/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.54/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.13/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.43/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.33/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.42/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.46/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.42/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.23/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.50/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.12/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.16/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.14/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.37/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 5.0.0.7/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.41/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 3.0.0.46/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.48/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.30/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.21/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.27/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 5.0.0.8/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 6.0.0.5/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 5.0.0.6/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -s 9.0.0.49/32 -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -p icmp -j RETURN
  -A neutron-openvswi-ic05bb97b-2 -m state --state INVALID -j DROP

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References

[Bug 1478925] [NEW] Instances on the same compute node unable to connect to each other's ports
From: Ioana-Madalina Patrichi, 2015-07-28