1. Hussam Nasir

Hussam Nasir

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Viewing 15 posts - 16 through 30 (of 94 total)
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  • in reply to: FABRIC CLEM Dataplane link is currently down #7408
    Hussam Nasir
    Moderator

      This Issue has been resolved. Please continue your work as normal.

      in reply to: FABRIC MICH – Network Outage #7331
      Hussam Nasir
      Moderator

        This outage has been resolved

        in reply to: Connectivity dead after maintenance #7268
        Hussam Nasir
        Moderator

          Can you p;lease provide us with more details like slice name sites used and slice id ?

          in reply to: Resource for running fablib on my local machine #7145
          Hussam Nasir
          Moderator

            Have you tried uploading your files directly to your FABRIC VMs ?

            Transferring data to and from your VMs

            in reply to: MFLIB error in instrumentazion #7136
            Hussam Nasir
            Moderator

              Do you mean that firs t instrumentized the slice, then logged out and came back and tried to re-instrumentize the same slice ?

              in reply to: MFLIB error in instrumentazion #7109
              Hussam Nasir
              Moderator

                Hello,

                I looked at your nodes, but as I mentioned earlier, the relevant log files are on your jupyterhub session in /tmp/mflib/*. We would require those to look into the cause. I tried the same slice using my account and have not encountered the error you mentioned.

                in reply to: Power outage on FABRIC-SALT – RESOLVED #7107
                Hussam Nasir
                Moderator

                  All slices have been recovered and the site is functional again—apologies for the inconvenience caused.

                  in reply to: Lost Access to Node #7105
                  Hussam Nasir
                  Moderator

                    Try now. My colleague Mert Cevik has restored all VMs. But FYI any data-plane interface config that was not persistent may need to be re-created

                    in reply to: Lost Access to Node #7102
                    Hussam Nasir
                    Moderator

                      The FABRIC SALT suffered a power outage last night. We are in the process of recovering the VMs. I will update you once they are up again.

                      in reply to: MFLIB error in instrumentazion #7099
                      Hussam Nasir
                      Moderator

                        Is this slice still active? If so, could you please let us know which rack it is on ?. Also it would be good if you can also send us  your MFlib log file which should be in /tmp/mflib/* on your jupyterhub session.

                        in reply to: Slice Configuration Failure #7068
                        Hussam Nasir
                        Moderator

                          This is just a guess, but in your commands to delete IPs, you are deleting the IP/interface that you SSH into thus killing your SSH connection to the VM.

                          in reply to: Recent issues with SRI, BRIST, TACC #7045
                          Hussam Nasir
                          Moderator

                            Hello,

                            TACC being our of IP is out of our hands for now due to the limited IPv4 space available. Hopefully, by Fall, the rack will be converted to using IPv6 which would resolve this issue.

                            BRIST had a data plane outage today (07:00 BST and 09:00 BST Tuesday 4th June 2024.). Apart from these, we are unaware of any other issues. We will need more details about the nature of the error to investigate further.

                            in reply to: NAT64 Issues #7037
                            Hussam Nasir
                            Moderator

                              Hello vaiden,

                              Firstly you no longer need to run any script for NAT64. FABRIC DNS servers provided to your VMS now can do NAT64. With that said, the other is misunderstanding of how NAT64 service works. Most of the time when they say NAT64, it is meant to work in conjunction with DNS64.

                              When a hostname (with an IPv4-only address) is resolved for an IP at the DNS servers and the DNS server does a DNS64, it will create a fake IPV6 address for that host which will be sent to your application. Your application then uses that fake IPv6 address which is an IP that is managed by the NAT64/DNS64 server. The server will then route your traffic by converting from IPv6 to ipv4 and then back in reverse.

                              In your case, you are directly trying the IPv4 address which will not work. If you don’t have a hostname that was resolved to that IPv4 address, there is a complex workaround for this issue.  You must create your own fake IPv6 address using the NAT64 server’s IPv6 prefix. If this is really needed, I can provide more details on how to do it.

                              Hussam Nasir
                              Moderator

                                The maintenance is complete and the site is now open again for use.

                                in reply to: rutg-w2 down due to hardware issues #7025
                                Hussam Nasir
                                Moderator

                                  worker is up again.

                                Viewing 15 posts - 16 through 30 (of 94 total)