ExtremeCloud IQ- Site Engine & Extreme Management Center

  • 1.  EMC Upgrade 8.0 - OS upgrade problem

    Posted 07-26-2017 05:56

    when starting the installer-file to upgrade EMC from to, the installer tries to update the OS.
    After executing the file, it aborts because "internet connection cannot be established".
    I sniffered the data traffic from the appliance and found out, that he does a name resolution on "security.ubuntu.com" with
    After that a http-Request with get /ubuntu is generated, but that one failes with 503 - service unavailable.

    I accessed this page manually in the web browser and the website is working.
    I also tried other IPs from the pool security.ubuntu.com, but that hasn't worked either.

    Does anyone experienced the same problem?

    Best Regards

  • 2.  RE: EMC Upgrade 8.0 - OS upgrade problem

    Posted 07-26-2017 06:40
    Problem solved: A few firewalls have an intermediation page, which shows the 503 as well.
    So that was related to the firewall, not to the server