[Xusheng Ai]

Thanks for replying. We figured out that incorrect IP link setups caused the problem.

[Xusheng Ai]

Thanks for the reply. I will keep a look at the new Fablib interface.

[Xusheng Ai]

Fixed the problem by re-configure the environment.

[Xusheng Ai]

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

[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]

Xusheng Ai wrote:

On step 4, do we need to generate the ssh keys on the node itself or use the keys associated with the slice?

Never mind, thank you very much.

[Xusheng Ai]

On step 4, do we need to generate the ssh keys on the node itself or use the keys associated with the slice?

[Xusheng Ai]

This is the updated code but it still does not work with the same error:

try:
    for node in slice.get_nodes():
        stdout, stderr = node.execute('curl -O -L "https://golang.org/dl/go1.19.5.linux-amd64.tar.gz"')
        stdout, stderr = node.execute('tar -xf "go1.19.5.linux-amd64.tar.gz"')              
        stdout, stderr = node.execute('sudo mv -v go /usr/local')
        stdout, stderr = node.execute('echo "export GOPATH=$HOME/go" >> ~/.bashrc')
        stdout, stderr = node.execute('echo "export PATH=$PATH:/usr/local/go/bin:$GOPATH/bin" >> ~/.bashrc')
        stdout, stderr = node.execute('echo "export PATH=$PATH:/usr/local/go/bin" >> ~/.bashrc')
        stdout, stderr = node.execute('source ~/.bashrc')
        stdout, stderr = node.execute('go install github.com/named-data/YaNFD/cmd/yanfd@latest')  
        
except Exception as e:
    print(f"Exception: {e}")

• This reply was modified 1 year, 8 months ago by Xusheng Ai.

[Xusheng Ai]

We are trying to upload one 1G bio-related file to the slice nodes through JupyterHub. Since there is no way to upload files from local to Fabric nodes directly. I checked the disk space that we have 1G available disk space in total. If it was possible to create a persistent storage volume in the testbed, it will be much appreciated.

[Xusheng Ai]

Is there any chance that we could have a larger disk on JupyterHub?

[Xusheng Ai]

I delete some old files, and it works well right now. Thank you so much for the hints.

[Xusheng Ai]

Thank you so much for the information.

[Xusheng Ai]

Yes, The information can be printed.
When we create layer 3 network connection, we ran the command:

slice.get_nodes()[2].execute('nfdc face create udp6://[%s]' %slice.get_nodes()[1].get_management_ip())

So we didn’t have to copy and past the network information.

We was wondering if we could do the same for Layer 2 network connection like:

slice.get_nodes()[1].execute('nfdc face create remote ether://[%s] local dev://[%s]' [MAC address],[interface.get_os_interface()])

But we are not sure how to acquire MAC address through FABlib API

• This reply was modified 1 year, 11 months ago by Xusheng Ai.
• This reply was modified 1 year, 11 months ago by Xusheng Ai.
• This reply was modified 1 year, 11 months ago by Xusheng Ai.

[Xusheng Ai]

Is it possible that we can get the MAC address with corresponding NIC?
For example, below is the information of node 1:

Name	        Node   Network Bandwidth VLAN	MAC	                Device	Device
Node1-nic1_4-p1	Node1	net4	100	None	06:AC:16:7B:38:FF	ens7	ens7
Node1-nic1_2-p1	Node1	net2	100	None	06:BA:BC:72:F8:34	ens8	ens8
Node1-nic1_3-p1	Node1	net3	100	None	0A:ED:E0:7F:C2:B5	ens10	ens10
Node1-nic1_1-p1	Node1	net1	100	None	0A:70:23:DD:1F:B7	ens9	ens9

If there is a way that we can get the MAC address of these four NICs?

• This reply was modified 1 year, 11 months ago by Xusheng Ai.

[Xusheng Ai]

Durbek Gafurov wrote:

For some reason, now we have to manually turn up the interface.
You can first install
sudo apt install -y net-tools

and

sudo ifconfig ens7 up && sudo ifconfig ens8 up && sudo ifconfig ens9 up && sudo ifconfig ens10 up

Alternatively you can use the code below, to turn on all interfaces
try:
for node in slice.get_nodes():
print(“—-“)
print(“Node:”)
print(f” Name : {node.get_name()}”)
for component in node.get_components():
print(f” Name : {component.get_name()}”)
for interface in node.get_interfaces():
print(f” Name : {interface.get_name()}”)
stdout, stderr = node.execute(f’sudo apt install -y net-tools && sudo ifconfig {interface.get_os_interface()} up ‘)
except Exception as e:
print(f”Fail: {e}”)
traceback.print_exc()

Thanks for the information!
Both methods work well — manually turn up the interface and the code turns on all interfaces.

[Author]

Posts