1. Komal Thareja

Komal Thareja

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Viewing 15 posts - 151 through 165 (of 434 total)
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  • Komal Thareja
    Participant

      Hi Sourya,

      You will need permission for FabNetv*Ext services to enable public connections to your VMs. This request can be made by your Project Lead. For more details, please check here!

      Thanks,
      Komal

      in reply to: Increasing lease time causing issues #7477
      Komal Thareja
      Participant

        Hi Prateek,

        This looks like a bug, we have a race condition which is preventing the updates to the Slice Graph Model. I will work on addressing this. For now as a workaround, you can determine the IP Addresses via slice commander using show commands. Refer https://learn.fabric-testbed.net/knowledge-base/using-slicecommander-with-fabric/ for slice-commander usage.

        Alternatively, you can get the sliver information also via

        for s in slice.get_slivers():

        print(s._sliver) # This is a json object will provide the needed information

        Thanks,

        Komal

        in reply to: Increasing lease time causing issues #7475
        Komal Thareja
        Participant

          Hi Prateek,

          Could you please share your slice ID?

          Thanks,

          Komal

          in reply to: Unable to reserve slice #7455
          Komal Thareja
          Participant

            Hi Kriti,

            This looks like a version mismatch for the fabrictestbed-extensions. Are you running into this any of the JH containers? If so, please ensure you have no entries in /home/fabric/work/fabric_config/requirements.txt and then restart your JH container via File -> Hub Start Control Panel -> Stop My Server -> Start My Server.

             

            If you are running into this on you local environment, please consider updating to the latest fablib via

            pip install fabrictestbed-extensions==1.7.3

            Thanks,

            Komal

            in reply to: Traffic traces from middle of the network #7451
            Komal Thareja
            Participant

              Thank you, @yoursunny, for the excellent suggestion!

              @Jestus,

              In addition to @yoursunny’s point, the Project Lead for your project will need to request permissions to enable FabNetv*Ext services. You can find more details here.

              Additionally, we recommend avoiding the use of the management interface for data transfer and instead utilizing the FABNetv4Ext/FABNetv6Ext services. Please feel free to reach out if you have any questions or comments.

              Thanks,
              Komal

              in reply to: Token issue #7446
              Komal Thareja
              Participant

                Just closing the loop here as the issue was resolved over a short zoom call.

                The error message “The token is not yet valid (iat)” indicates that the token’s “issued at” (iat) timestamp is set in the future compared to the current time. This can happen if there is a clock discrepancy between the system where the token was generated and the system validating the token.

                Time on the server was behind current time, synching the clock with NTP server resolved the error.

                Thanks,

                Komal

                in reply to: Token issue #7440
                Komal Thareja
                Participant

                  Hi Yu,

                  I created a token and successfully validated it using the Credential Manager, but I am unable to reproduce the issue you’re experiencing. This error can sometimes occur due to stale cookies in the browser. Could you please try opening https://cm.fabric-testbed.net/ in an incognito window, then generate and validate the token? Let me know if the error persists.

                  Thanks,

                  Komal

                  • This reply was modified 9 months, 3 weeks ago by Komal Thareja.
                  in reply to: homogeneous or heterogeneous GPU type? #7427
                  Komal Thareja
                  Participant

                    Also, could you please post queries in this channel instead https://learn.fabric-testbed.net/forums/forum/fabric-general-questions-and-discussion/

                    Thanks,

                    Komal

                    in reply to: homogeneous or heterogeneous GPU type? #7426
                    Komal Thareja
                    Participant

                      Hi Yuanjun,

                      You can check the GPU types from the portal. For example information about STAR can be found here: https://portal.fabric-testbed.net/sites/STAR

                      Thanks,

                      Komal

                      in reply to: Increase space on jupyterhub #7423
                      Komal Thareja
                      Participant

                        Hi Prateek,

                        I recommend setting up your own FABRIC environment on your laptop or machine to run your experiments. This approach will allow you to capture more data and reduce reliance on Jupyter Hub. Consider configuring a local Python environment for the FABRIC API as described here, and run the notebooks locally.

                        Thanks,

                        Komal

                        in reply to: Increase space on jupyterhub #7420
                        Komal Thareja
                        Participant

                          Sharing the SSH and SCP commands again, due to an error in the above:

                          ssh -i /path/to/vm/private/key -J bastion.fabric-testbed.net [username]@[VM_IP]

                          scp -i /path/to/vm/private/key -o "ProxyJump bastion.fabric-testbed.net" [username]@[VM_IP]:file.txt .

                          scp -i /path/to/vm/private/key -o "ProxyJump bastion.fabric-testbed.net" ubuntu@[2001:400:a100:3030:f816:3eff:fe93:a1a0]:file.txt .

                          • This reply was modified 9 months, 4 weeks ago by Komal Thareja.
                          in reply to: Increase space on jupyterhub #7419
                          Komal Thareja
                          Participant

                            Hi Prateek,

                            The /home/fabric/work directory in the JupyterHub environment serves as persistent storage for code, notebooks, scripts, and other materials related to configuring and running experiments, including the addition of extra Python modules. However, it is not designed to handle large datasets.

                            **Transfer via the Bastion Host**
                            All virtual machines (VMs) are connected to a management network that you use for SSH access. You may have noticed that accessing your VMs requires jumping through a bastion host for enhanced security.
                            The simplest method for transferring data to and from a VM is by using scp (or a similar tool). However, you must still route through the bastion host. To do this, you will need to configure your external machine (such as your laptop) to use the bastion host for standard SSH connections.
                            You can find SSH configuration details here: [Logging into FABRIC VMs](https://learn.fabric-testbed.net/knowledge-base/logging-into-fabric-vms/).
                            The key takeaway from that document is to create (or modify) your ~/.ssh/config file to include the bastion host configuration. A basic setup might look like this:


                            #### Bastion
                            UserKnownHostsFile /dev/null
                            StrictHostKeyChecking no
                            ServerAliveInterval 120


                            Host bastion-?.fabric-testbed.net
                            User
                            ForwardAgent yes
                            Hostname %h
                            IdentityFile /path/to/bastion/private/key
                            IdentitiesOnly yes


                            Host bastion-*.fabric-testbed.net
                            User
                            IdentityFile /path/to/bastion/private/key

                            After configuring, you should be able to SSH with the following command:


                            ssh -i /path/to/vm/private/key [username]@[VM_IP]

                            For SCP, you can use the command:


                            scp -i /path/to/vm/private/key [username]@[VM_IP]:file.txt .

                            Keep in mind that if the VM IP address uses IPv6, colons can interfere with parsing. In this case, you need to escape the characters (escaping is necessary on macOS but not in Bash; however, using escapes works in both environments). Here’s an example:


                            scp -i /path/to/vm/private/key ubuntu@[2001:400:a100:3030:f816:3eff:fe93:a1a0]:file.txt .

                            Thanks,
                            Komal

                            Komal Thareja
                            Participant

                              Maintenance has been completed!

                              Thanks,
                              Komal

                              Komal Thareja
                              Participant

                                Hi Sunjay,

                                We did have an dataplane outage at SALT since Friday. It has been resolved now. FabNetv4Ext service on SALT should pass traffic. Thank you for sharing your observations and helping us address this quickly.

                                Thanks,
                                Komal

                                Komal Thareja
                                Participant

                                  Apologies, you are right that sliver is definitely Active I did notice dataplane issue for SALT, I will reach out to Tom and share updates.


                                  Reservation ID: 7dafe47e-3058-4282-9d09-66fe74588e1c Slice ID: 1c057890-bc44-450f-b109-995fef665216
                                  Resource Type: FABNetv4Ext Notices: Reservation 7dafe47e-3058-4282-9d09-66fe74588e1c (Slice qbss-tester(1c057890-bc44-450f-b109-995fef665216) Graph Id:b097687e-9cd9-45ac-89bb-d12a73c2da46 Owner:scauligi@icsi.berkeley.edu) is in state (Active,None_)
                                  Start: 2024-08-09 19:42:09 +0000 End: 2025-02-04 20:38:01 +0000 Requested End: 2025-02-04 20:38:01 +0000
                                  Units: 1 State: Active Pending State: None_

                                Viewing 15 posts - 151 through 165 (of 434 total)