ATLAS UK Cloud Support

Thursday 10 Feb 2022, 10:00 → 11:00 Europe/London

Zoom

Tim Adye (Science and Technology Facilities Council STFC (GB)), James William Walder (Science and Technology Facilities Council STFC (GB))

https://cern.zoom.us/j/98434450232

Password protected (same as (new) OPs Mtg)

● Outstanding tickets

Outstanding tickets

• 155889 TEAM atlas UKI-NORTHGRID-LANCS-HEP less urgent NGI_UK in progress 2022-02-08 17:39:00 UK UKI-NORTHGRID-LANCS-HEP: Huge transfer failures as destination EGI

  • Probably Issues found with XrootD XrdMacaroons code with RH8 stricter code checking

• 155856 TEAM atlas RAL-LCG2 less urgent NGI_UK in progress 2022-02-04 09:09:00 RAL-LCG2: deletion errors EGI

  • Now closed; problems not reoccured

• 155430 TEAM atlas UKI-SCOTGRID-ECDF less urgent NGI_UK in progress 2022-02-09 22:45:00 UKI-SCOTGRID-ECDF transfer and deletion errors EGI

  • To be followed up, still assuming that lost data needs to be processed.

• 155141 TEAM atlas UKI-LT2-Brunel less urgent NGI_UK in progress 2022-02-08 12:38:00 Transfers from UKI-LT2-Brunel fail with “Internal Server Error” EGI

  • Data declared lost; much less registered in rucio than from the file list.

• 154806 TEAM atlas UKI-LT2-QMUL less urgent NGI_UK in progress 2022-02-07 06:07:00 UKI-LT2-QMUL SOURCE transfer failures EGI

  • Restarting webdav once a day; situation looking much improved.

• 154543 TEAM atlas UKI-SCOTGRID-ECDF urgent NGI_UK in progress 2022-02-08 14:01:00 DPM storage ACL configuration EGI

  • Site updated ticket

• 154436 TEAM atlas RAL-LCG2 very urgent NGI_UK in progress 2022-02-03 16:46:00 RAL Echo Davs developments EGI

  • In progress, additonal Vos are using the endpoints now

• 153367 TEAM atlas RAL-LCG2 urgent NGI_UK on hold 2021-12-01 15:37:00 HTTPS on RAL CTA EGI

  • CTA migration expected in the week of Feb 28th

---

● CPU

• • RAL

    • Looking good; may be underreporting its corepower to ATLAS

  • Northgrid

    • generally fine

  • London

    • QMUL looking better with the daily webdav restarts

  • SouthGrid

    • OK

  • Scotgrid

    • Durham, appears to have had problem with CE’s, better after the restarts
    • Glasgow; Xcache blip, and stage-in problems; working on the xrootd tunings

---

● Ongoing Items

• TPC with http

  • Continuing. Plan for Glasgow to be decided.

• Storageless Site test (Oxford)

  • Switched to prefetch 1 at 1100 today

• LANCS Storage migration

  • Apparent problem with xrootd/libmacaroon in Centos8
  • Issue submitted to github for devs
  • Best current solution is to use Centos 7 for the xrootd box

---

● News round-table

• Alessandra

  • NTR

• Dan

  • Total of 7PB (from ~ 3.5PB) now deployed

• Gerard

  • NTR

• Matt

  • NTR

• Gordon

  • NTR

• Peter

  • NTR

• Sam

  • NTR

• Stephen

  • NTR

• Vip

  • NTR

 

 

---

● AOB

• HS06 talk from S&C week: try to get correct Corepowers by next Q1

 

 

10:00 → 10:20 Status

10:20 → 10:40 Ongoing Items

• TPC with http

  • Continuing. Plan for Glasgow to be decided.

• Storageless Site test (Oxford)

  • Switched to prefetch 1 at 1100 today

• LANCS Storage migration

  • Apparent problem with xrootd/libmacaroon in Centos8
  • Issue submitted to github for devs
  • Best current solution is to use Centos 7 for the xrootd box

10:40 → 10:50 News round-table

• Alessandra

  • NTR

• Dan

  • Total of 7PB (from ~ 3.5PB) now deployed

• Gerard

  • NTR

• Matt

  • NTR

• Gordon

  • NTR

• Peter

  • NTR

• Sam

  • NTR

• Stephen

  • NTR

• Vip

  • NTR

 

 

10:50 → 11:00 AOB

ATLAS Monitoring (UK Cloud)

HS06 on the grid

Next Week S&C

Storage ACLs

• HS06 talk from S&C week: try to get correct Corepowers by next Q1