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[Hang Yang <1862703@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Steps to reproduce the issue using Neutron Rocky with OVS:

# create bastion-sec-grp to allow ssh from anywhere
openstack security group create bastion-sec-grp
openstack security group rule create --ethertype=IPv4 --protocol tcp --remote-ip 0.0.0.0/0 --ingress --dst-port=22 bastion-sec-grp

# create application-sec-grp
openstack security group create application-sec-grp

# Allow ssh to egress from the bastion group to the application group
openstack security group rule create --ethertype=IPv4 --protocol tcp --remote-group application-sec-grp --egress --dst-port=22 bastion-sec-grp

# Allow ssh to ingress to the application group from the bastion group
openstack security group rule create --ethertype=IPv4 --protocol tcp --remote-group bastion-sec-grp --ingress --dst-port=22 application-sec-grp

# create servers and associate with security groups
openstack server create --wait --image rhel7 --flavor small --security-group bastion-sec-grp bastion-server
openstack server create --wait --image rhel7 --flavor small --security-group application-sec-grp application-server

After boot, bastion-server and application-server are landed on
different HVs and we can ssh to bastion-server but cannot ssh to
application-server from there. Neutron debug log from application-
server's HV shows:

2020-02-05 22:57:05,825 DEBUG
[neutron.agent.linux.openvswitch_firewall.firewall]
/opt/openstack/venv/neutron/lib/python2.7/site-
packages/neutron/agent/linux/openvswitch_firewall/firewall.py:_build_addr_conj_id_map:297
No member for SG <BASTION_SEC_GRP_ID>


Suspect this is related to: https://bugs.launchpad.net/neutron/+bug/1854131 and after reverting the change https://review.opendev.org/#/c/696976/ locally then remote security group started to work again.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1862703

Title:
  Neutron remote security group does not work

Status in neutron:
  New

Bug description:
  Steps to reproduce the issue using Neutron Rocky with OVS:

  # create bastion-sec-grp to allow ssh from anywhere
  openstack security group create bastion-sec-grp
  openstack security group rule create --ethertype=IPv4 --protocol tcp --remote-ip 0.0.0.0/0 --ingress --dst-port=22 bastion-sec-grp

  # create application-sec-grp
  openstack security group create application-sec-grp

  # Allow ssh to egress from the bastion group to the application group
  openstack security group rule create --ethertype=IPv4 --protocol tcp --remote-group application-sec-grp --egress --dst-port=22 bastion-sec-grp

  # Allow ssh to ingress to the application group from the bastion group
  openstack security group rule create --ethertype=IPv4 --protocol tcp --remote-group bastion-sec-grp --ingress --dst-port=22 application-sec-grp

  # create servers and associate with security groups
  openstack server create --wait --image rhel7 --flavor small --security-group bastion-sec-grp bastion-server
  openstack server create --wait --image rhel7 --flavor small --security-group application-sec-grp application-server

  After boot, bastion-server and application-server are landed on
  different HVs and we can ssh to bastion-server but cannot ssh to
  application-server from there. Neutron debug log from application-
  server's HV shows:

  2020-02-05 22:57:05,825 DEBUG
  [neutron.agent.linux.openvswitch_firewall.firewall]
  /opt/openstack/venv/neutron/lib/python2.7/site-
  packages/neutron/agent/linux/openvswitch_firewall/firewall.py:_build_addr_conj_id_map:297
  No member for SG <BASTION_SEC_GRP_ID>

  
  Suspect this is related to: https://bugs.launchpad.net/neutron/+bug/1854131 and after reverting the change https://review.opendev.org/#/c/696976/ locally then remote security group started to work again.

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