ATLAS UK Cloud Support

Thursday 20 Jan 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

  • 155576 TEAM atlas UKI-SOUTHGRID-RALPP less urgent NGI_UK in progress 2022-01-19 15:48:00 UKI-SOUTHGRID-RALPP frontier squid degraded EGI

    • Reboot of kernel; to be monitored, then close ticket

  • 155460 USER atlas UKI-SOUTHGRID-CAM-HEP less urgent NGI_UK in progress 2022-01-20 14:51:00 Failovers from Cambridge to CERN backup proxy EGI

    • Discussion ongoing on how to monitor the squid in an exception

  • 155430 TEAM atlas UKI-SCOTGRID-ECDF less urgent NGI_UK in progress 2022-01-13 14:27:00 UKI-SCOTGRID-ECDF transfer and deletion errors EGI

    • Awaiting ECDF site outcome of rebuilding the disk server

  • 155141 TEAM atlas UKI-LT2-Brunel less urgent NGI_UK in progress 2022-01-19 17:40:00 Transfers from UKI-LT2-Brunel fail with “Internal Server Error” EGI

    • Needs to be running a consistency checking

  • 154806 TEAM atlas UKI-LT2-QMUL less urgent NGI_UK in progress 2022-01-15 14:43:00 UKI-LT2-QMUL SOURCE transfer failures: [13] Result (Neon): SSL handshake failed EGI

    • JW to try and update; sporadic failures continue

  • 154543 TEAM atlas UKI-SCOTGRID-ECDF urgent NGI_UK in progress 2021-12-08 12:35:00 DPM storage ACL configuration EGI

    • Lower priority

  • 154436 TEAM atlas RAL-LCG2 very urgent NGI_UK in progress 2022-01-19 22:13:00 RAL Echo Davs developments EGI

    • Moved to in progress; closed other tickets, and directed here, where appropriate.

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

    • likely to need to get davs going before this. Noted that both direct Xroot transfer from T0 and multihop will be needed

---

● CPU

• CPU

  • General Rucio issues leading to repeated HC downtimes from last night and ongoing

    • 503 errors when quering rucio database and some networking issues appear related

  • RAL

    • HC issues not setting site online over weekend; improved since

  • Northgrid

    • NTR

  • London

    • NTR; some continuing QMUL volatility

  • SouthGrid

    • Sussex running increased slightly; possibly due to Site tweaks

  • Scotgrid

    • To look at Glasgow

•  

 

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● Ongoing Items

• TPC with http

  • Several ongoing activities started and tuning

• Storageless Site test (Oxford)

  • To understand VP, for perhaps BHAM and Ox
  • Job mix updated to push more IO to Oxford, and through the cache

• LANCS Storage migration

  • Working on OSDs; possibility for next week

 

 

---

● News round-table

- Fairwell to Patrick

10:00 → 10:20 Status

10:20 → 10:40 Ongoing Items

• TPC with http

  • Several ongoing activities started and tuning

• Storageless Site test (Oxford)

  • To understand VP, for perhaps BHAM and Ox
  • Job mix updated to push more IO to Oxford, and through the cache

• LANCS Storage migration

  • Working on OSDs; possibility for next week

 

 

10:40 → 10:50 News round-table

- Fairwell to Patrick

10:50 → 11:00 AOB

ATLAS Monitoring (UK Cloud)