A public IP for the Fabric node

[Xusheng Ai]

Hello,

We want to align Open Science Grid (OSG) workflow with Fabric. If it is possible that we can assign a public IP for Fabric node that can interact with external network, or if there is another way that we can achieve the goal.

Thanks,
Best Regards,
Xusheng

[yoursunny]

Yes, you can request public IPv4/IPv6 address with FABNetv4Ext/FABNetv6Ext network service:

Network Services in FABRIC

There are some examples in my FABRIC scripts repository:

https://github.com/yoursunny/fabric

[Komal Thareja]

@yoursunny – Thank you for sharing the example scripts. Appreciate it!

@Xusheng – You can use FabNetv4Ext or FabNetv6Ext services as explained here.

Also, we have two example notebooks one each for FabNetv4Ext or FabNetv6Ext available via start_here.ipynb:

• FABNet IPv4 Ext (Layer 3): Connect to FABRIC’s IPv4 internet with external access (manual)
• FABNet IPv6 Ext (Layer 3): Connect to FABRIC’s IPv6 internet with external access (manual)

Thanks,
Komal

[Xusheng Ai]

Hello yoursunny and Komal,

Thanks for the replies. We just got the Net.FABNetv4Ext tag added to the project.
I did try both of the methods mentioned above. However, it showed the same error when I submit the slice request. Please see the error detail below:

Cell In[18], line 7
      5 iface1 = node.add_component(model='NIC_Basic', name = node_nic_name).get_interfaces()[0]
      6 # Network
----> 7 net1 = slice.add_l3network(name=network_name, interfaces=[iface1], type= 'IPv4Ext')
      8 slice.submit()

File ~/work/Long_liveslice/plugins.py:71, in Plugins.add_l3network(self, name, interfaces, type, technology)
     68 def add_l3network(
     69     self, name: str = None, interfaces: List[Interface] = [], type: str = "IPv4",
     70     technology: str = None) -> NetworkService:
---> 71     return NetworkService.new_l3network(
     72         slice=self, name=name, interfaces=interfaces, type=type, technology=technology
     73     )

File ~/work/Long_liveslice/plugins.py:104, in Plugins.new_l3network(slice, name, interfaces, type, technology)
     96     raise Exception(
     97         "Invalid L3 Network Type: Allowed values [IPv4, IPv4Ext, IPv6, IPv6Ext, L3VPN]"
     98     )
    100 # TODO: need a fabnet version of this
    101 # validate nstype and interface List
    102 # NetworkService.validate_nstype(nstype, interfaces)
--> 104 return NetworkService.new_network_service(
    105     slice=slice, name=name, nstype=nstype, interfaces=interfaces, technology=technology
    106 )

File ~/work/Long_liveslice/plugins.py:146, in Plugins.new_network_service(slice, name, nstype, interfaces, user_data, technology)
    139 fim_network_service = slice.topology.add_network_service(
    140     name=name, nstype=nstype, interfaces=fim_interfaces, technology=technology
    141 )
    143 network_service = NetworkService(
    144     slice=slice, fim_network_service=fim_network_service
    145 )
--> 146 network_service.set_user_data(user_data)
    147 network_service.init_fablib_data()
    149 return network_service

AttributeError: 'NetworkService' object has no attribute 'set_user_data'

[Xusheng Ai]

The problem is solved by updating the fabrictestbed-extensions to 1.5.0.

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