[Bug 1898886] Re: Can't establish BGP session with password authentication

Felipe Alencastro 1898886 at bugs.launchpad.net
Wed Oct 14 13:42:12 UTC 2020


Refiled this here, as Focal currently doesn't provide python3-os-ken >=
1.2 which includes the fix mentioned by @j-harbott

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https://bugs.launchpad.net/bugs/1898886

Title:
  Can't establish BGP session with password authentication

Status in charm-neutron-dynamic-routing:
  New
Status in neutron:
  Invalid
Status in python-os-ken package in Ubuntu:
  New

Bug description:
  Creating a neutron BGP peer with password authentication leads to an
  error reported on neutron-bgp-dragent.log.

  2020-10-06 18:58:51.861 125213 DEBUG bgpspeaker.peer [-] Started peer Peer(ip: 100.94.2.2, asn: 65200) _run /usr/lib/python3/dist-packages/os_ken/services/protocols/bgp/peer.py:676                                                                                            
  2020-10-06 18:58:51.861 125213 DEBUG bgpspeaker.peer [-] start connect loop. (mode: active) _on_update_connect_mode /usr/lib/python3/dist-packages/os_ken/services/protocols/bgp/peer.py:582                                                                                    
  2020-10-06 18:58:52.862 125213 DEBUG bgpspeaker.peer [-] Peer 100.94.2.2 BGP FSM went from Idle to Connect bgp_state /usr/lib/python3/dist-packages/os_ken/services/protocols/bgp/peer.py:236                                                                                   
  2020-10-06 18:58:52.863 125213 DEBUG bgpspeaker.peer [-] Peer(ip: 100.94.2.2, asn: 65200) trying to connect to ('100.94.2.2', 179) _connect_loop /usr/lib/python3/dist-packages/os_ken/services/protocols/bgp/peer.py:1292                                                      
  2020-10-06 18:58:52.863 125213 DEBUG bgpspeaker.base [-] Connect TCP called for 100.94.2.2:179 _connect_tcp /usr/lib/python3/dist-packages/os_ken/services/protocols/bgp/base.py:412                                                                                            
  2020-10-06 18:58:52.864 125213 ERROR os_ken.lib.hub [-] hub: uncaught exception: Traceback (most recent call last):                                                                                                                                                             
    File "/usr/lib/python3/dist-packages/os_ken/lib/hub.py", line 69, in _launch                                                                                                                                                                                                  
      return func(*args, **kwargs)                                                                                                                                                                                                                                                
    File "/usr/lib/python3/dist-packages/os_ken/services/protocols/bgp/peer.py", line 1296, in _connect_loop                                                                                                                                                                      
      self._connect_tcp(peer_address,                                                                                                                                                                                                                                               File "/usr/lib/python3/dist-packages/os_ken/services/protocols/bgp/base.py", line 422, in _connect_tcp                                                                                                                                                                        
      sockopt.set_tcp_md5sig(sock, peer_addr[0], password)                                                                                                                                                                                                                          File "/usr/lib/python3/dist-packages/os_ken/lib/sockopt.py", line 71, in set_tcp_md5sig                                                                                                                                                                                       
      impl(s, addr, key)                                                                                                                                                                                                                                                            File "/usr/lib/python3/dist-packages/os_ken/lib/sockopt.py", line 38, in _set_tcp_md5sig_linux                                                                                                                                                                                
      sa = sockaddr.sa_in4(addr)                                                                                                                                                                                                                                                    File "/usr/lib/python3/dist-packages/os_ken/lib/sockaddr.py", line 63, in sa_in4                                                                                                                                                                                              
      return _pad_to(hdr + data, _SIN_SIZE)                                                                                                                                                                                                                                         File "/usr/lib/python3/dist-packages/os_ken/lib/sockaddr.py", line 57, in _pad_to                                                                                                                                                                                             
      return data + pad_len * '\0'                                                                                                                                                                                                                                                
  TypeError: can't concat str to bytes                                                                                                                                                                                                                                            

  The log is reported after peer is created and associated to speaker.
  Ex.:

  #openstack bgp speaker create --ip-version 4 --local-as 65211 --no-advertise-floating-ip-host-routes bgpspeaker
  #openstack bgp speaker add network bgpspeaker provider-network
  #openstack bgp peer create --peer-ip 100.94.2.2 --remote-as 65200 --auth-type md5 --password cisco bgppeer
  #openstack bgp speaker add peer bgpspeaker bgppeer
  #openstack bgp dragent add speaker 27f6b5bc-4b0d-466c-957e-34059bd2cc2b bgpspeaker

  If you create a BGP peer without password, everything works just fine.

  Opesntack version: Ussuri
  Deployed using Juju
  Distro: Ubuntu Focal Fossa
  The environment is a full deployment with all core services running in multi-node.

  This looks a lot with the already reported and fixed bug #1592982.

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