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CMS Application :
New network connectivity test
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![]() Send message Joined: 29 Aug 05 Posts: 1084 Credit: 9,230,050 RAC: 6,179 ![]() |
You may have noticed a new test in your task logs: Testing connection to http://cms-frontier.openhtc.io:8080/FrontierProd/ This is to try to circumvent an occasional failure to connect to the Frontier ("conditions database") servers which appears to be related to poorly-configured network connections. We do a rudimentary connectivity test, but that doesn't involve data transfer. Hosts which pass this test can still fail to properly acquire data from the servers, leading them to cycle through the four Frontier servers (first using IPv4 protocol, then with IPv6) before failing. Typically this is repeated many times by the same host (and sometimes other hosts from the same volunteer!). This failure is not obvious in the task log, so we have instituted a slightly more sophisticated test. If this fails, you will then see the message: Check your firewall and your network loadin your log. It will be several days before it becomes obvious to us how effective this test is. ![]() |
![]() Send message Joined: 29 Aug 05 Posts: 1084 Credit: 9,230,050 RAC: 6,179 ![]() |
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![]() Send message Joined: 29 Aug 05 Posts: 1084 Credit: 9,230,050 RAC: 6,179 ![]() |
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Send message Joined: 18 Dec 15 Posts: 1868 Credit: 136,039,509 RAC: 89,765 ![]() ![]() |
there still seems to be a problem - tasks error out after about 2 minutes:OK, that test didn't winkle out the problem connections. We're trying something more complicated. https://lhcathome.cern.ch/lhcathome/result.php?resultid=420976190 "2025-04-03 16:50:34 (8480): VM Completion Message: Could not connect to all required network services" |
![]() Send message Joined: 15 Jun 08 Posts: 2634 Credit: 272,025,947 RAC: 92,648 ![]() ![]() |
Same here. The test (even the most recent modification) cause all tasks to fail. |
![]() Send message Joined: 29 Aug 05 Posts: 1084 Credit: 9,230,050 RAC: 6,179 ![]() |
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![]() Send message Joined: 29 Aug 05 Posts: 1084 Credit: 9,230,050 RAC: 6,179 ![]() |
Same here. OK, new script is in place. Manual test works. Try it! (I don't have a running BOINC machine at home...) ![]() |
![]() Send message Joined: 15 Jun 08 Posts: 2634 Credit: 272,025,947 RAC: 92,648 ![]() ![]() |
Works here. |
![]() Send message Joined: 29 Aug 05 Posts: 1084 Credit: 9,230,050 RAC: 6,179 ![]() |
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