1. Komal Thareja

Komal Thareja

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Viewing 15 posts - 271 through 285 (of 475 total)
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  • in reply to: No route to host: Connect failed #6889
    Komal Thareja
    Participant

      Hi Vaiden,

      VM is up and accessible via SSH. Could you please check if your bastion keys are expired?

      Thanks,

      Komal

      in reply to: Unable to log interface down in /var/log/messages – OSPF #6883
      Komal Thareja
      Participant

        Hi Kriti,

        By default, fablib marks the dataplane interfaces as unmanaged by NetworkManager. So NetworkManager is not logging the interface down operation. This was done deliberately as having an interface managed by NetworkManager kept overriding the IP address configuration applied by fablib. Please note this behavior is specific to rocky images which enables NetworkManager by default. Ubuntu doesn’t use NetworkManager by default.

        We disable NetworkManager on rocky to be consistent with Ubuntu and leave it to the user to change this behavior as they see fit.

         

        Thanks,

        Komal

        in reply to: Failed to initiate “fablib_manager()” #6881
        Komal Thareja
        Participant

          Hello Yifang,

          Could you please share the output of the following commands? This seems to be an issue local to your environment.

          cat /home/fabric/work/fabric_config/fabric_rc and ls -ltr /home/fabric/work/fabric_config

          Also, please try to Restart your JH container via File -> Hub Control Panel -> Stop My Container followed by Start My Container.

          Thanks,

          Komal

          Komal Thareja
          Participant

            Maintenance is complete and the network model has been updated.

            in reply to: Fablib can not list resources via jupyterhub #6801
            Komal Thareja
            Participant

              Hello Khawar,

              Could you please check if you have any entries for fabrictestbed-extensions in /home/fabric/work/fabric_config/requirements.txt ? If so, please remove those entries and restart your container via File -> Hub Control Panel -> Stop My container followed by Start My Container.

              This should clear the issue. Please let us know if the problem persists.

              Thanks,

              Komal

              in reply to: JupyterHub can’t find Config file and Bastion key file #6668
              Komal Thareja
              Participant

                Could you please remove the file /home/fabric/work/fabric_config/ssh_config and re-run the jupyter-examples-rel1.6.1/configure_and_validate.ipynb notebook? This shall fix the config issue.

                Thanks,
                Komal

                in reply to: JupyterHub can’t find Config file and Bastion key file #6665
                Komal Thareja
                Participant

                  Could you please share the output of the command cat /home/fabric/work/fabric_config/ssh_config ?

                  If this file already existed, the notebook wouldn’t have made any changes to it. Looks like line 5 has some issues.

                  Sharing example contents of this file below with BASTION USERNAME MASKED:

                  
                  UserKnownHostsFile /dev/null
                  StrictHostKeyChecking no
                  ServerAliveInterval 120
                  Host bastion.fabric-testbed.net
                  User YOUR_BASTION_USER_NAME
                  ForwardAgent yes
                  Hostname %h
                  IdentityFile /home/fabric/work/fabric_config/fabric_bastion_key
                  IdentitiesOnly yes
                  Host * !bastion.fabric-testbed.net
                  ProxyJump YOUR_BASTION_USER_NAME@bastion.fabric-testbed.net:22
                  
                  in reply to: JupyterHub can’t find Config file and Bastion key file #6661
                  Komal Thareja
                  Participant

                    The error observed is because of the incomplete config. You can run the configure notebook from the path jupyter-examples-rel1.6.1/configure_and_validate.ipynb without impacting your experiments.

                    This only sets up your environment. Experiments from rel-1.5.4 would still work after the config.

                    Thanks,

                    Komal

                    1 user thanked author for this post.
                    in reply to: JupyterHub can’t find Config file and Bastion key file #6657
                    Komal Thareja
                    Participant

                      Hi Robin,

                      Config notebook has been updated to avoid such errors.

                      Could you please run the notebook: jupyter-examples-rel1.6.1/configure_and_validate.ipynb ?

                      This should update your bastion keys if expired or do not exist. Please try creating a slice and SSH access again after that from console as well as the notebook. Please restart the notebook kernel after the keys are updated.

                      Thanks,

                      Komal

                      Komal Thareja
                      Participant

                        Attaching the screenshot for Chameleon Lease

                        Komal Thareja
                        Participant

                          Please create a Lease to reserve a host on Chameleon via Project -> Reservations -> Leases -> Create Lease.

                          Once the lease is created, click on the lease, you will Reservation section on it, Copy the Id from there.

                          This is the Id you need to use in the notebook. Hope this helps.

                          If you create the Server on Chameleon manually. Please set the IP address and the routes on the server as below:

                          ip addr add 10.130.162.2/24 dev eth1

                          Add route: route add -net 10.130.162.0/24 dev eth1

                          Change the IP and interface as per your FabNet subnet.

                          in reply to: OpenVSwitch link under Complex Recipes doesn’t go anywhere #6639
                          Komal Thareja
                          Participant

                            The fix for BasicNICs is planned to be made available in the next software release 1.7 planned to be available by end of Spring semester.

                            Thanks,

                            Komal

                            Komal Thareja
                            Participant
                              Komal Thareja
                              Participant

                                MASS is working as well. We checked your FABRIC nodes, Fabnet services seems to be connected properly and we can ping the gateway. FABRIC VMs in your slice can ping each other too.

                                Not sure how your Chameleon Server is setup.

                                You should see routes and interface setup something similar to below on your Chameleon Node:

                                
                                cc@kthare10-fabric-stitch-server-1:~$ ip route list
                                default via 10.130.163.2 dev eno1np0 proto dhcp src 10.130.163.10 metric 100
                                10.128.0.0/10 via 10.130.163.1 dev eno1np0 proto dhcp src 10.130.163.10 metric 100
                                10.130.163.0/24 dev eno1np0 proto kernel scope link src 10.130.163.10
                                169.254.169.254 via 10.130.163.3 dev eno1np0 proto dhcp src 10.130.163.10 metric 100
                                cc@kthare10-fabric-stitch-server-1:~$
                                cc@kthare10-fabric-stitch-server-1:~$
                                cc@kthare10-fabric-stitch-server-1:~$
                                cc@kthare10-fabric-stitch-server-1:~$ ifconfig
                                eno1np0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
                                inet 10.130.163.10 netmask 255.255.255.0 broadcast 10.130.163.255
                                inet6 fe80::be97:e1ff:fec4:8e0 prefixlen 64 scopeid 0x20<link>
                                ether bc:97:e1:c4:08:e0 txqueuelen 1000 (Ethernet)
                                RX packets 4937 bytes 1058216 (1.0 MB)
                                RX errors 0 dropped 0 overruns 0 frame 0
                                TX packets 4804 bytes 410390 (410.3 KB)
                                TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
                                

                                P.S: I did execute the cell indicated as “(Optionally) Add a Router and Attach it to the Subnet”.

                                 

                                in reply to: OpenVSwitch link under Complex Recipes doesn’t go anywhere #6623
                                Komal Thareja
                                Participant

                                  Hello Violet,

                                  Thank you for informing us about this. The OpenVswitch notebook has been uploaded to the Jupyter Examples and is now accessible on GitHub here.

                                  Please be aware that, due to limitations imposed by NVIDIA/Mellanox on how bridging is managed, the VM running the OVS switch must utilize dedicated NICs instead of BasicNICs. This example assumes that condition. We have identified an alternative solution currently undergoing testing. We will keep you updated once a solution is deployed to make this work with BasicNICs.

                                  Appreciate your understanding.

                                  Best regards,

                                  Komal

                                Viewing 15 posts - 271 through 285 (of 475 total)