XCache DevOps Meeting Oct 15, 2020

US/Central
Derek Weitzel (University of Nebraska - Lincoln), Marian Zvada (US CMS)
Description

Time: 11AM PT/1PM CT/2PM ET/8PM CET
Where: ZOOM.US

Join from PC, Mac, Linux, iOS or Android: https://unl.zoom.us/j/651969661
Meeting is password-protected: ask #xcache slack channel or xcache@opensciencegrid.org

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    US: +16699006833,,651969661#  or +14086380968,,651969661#
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    Dial(for higher quality, dial a number based on your current location):
        US: +1 669 900 6833  or +1 408 638 0968  or +1 646 876 9923
    Meeting ID: 651 969 661
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Attendees: Derek, Marian, Andy, Edgar, Ilija, JohnH, Matevz, Mat, Riccardo

News
----
- no news good news

XRootD development for XCache
-----------------------------
- Scitoken moving into submodules status in order to build when we want to
- LSST is becoming a big Kubernetes setup but there would be some loose control of DNS, it's complicated
- RC for 4 series our and soon for 5 series
- lot of backporting done for r4, mostly because people don't want to move to 5
- discussion on DPM degrading support in the near future, reduced manpower on develepment, it my have an impact on several things, there is around 600 sites that runs DPM

XCache issues
-------------
- nothing new
- StashCache in PIC is using new image that is stable, would need help run v5 at CNAF
- PIC people wants to be part of xcache meetings, we will add them to the list!

ATLAS XCache deployment
-----------------------
- investigating some gfal issues

CMS XCache deployment
---------------------
- no report
- CMS data is landing to GRACC accidentally? Will investigate...

OSG StashCache deployment
-------------------------
- SW: asking Ilija to help with upstreaming changes to ATLAS StashCache containers; Ilija comments better tagging would be more appropriate
- SW: Are people interested in build of xcache packages for EL8? We should be at least start testing it
- Andy: EL6 support no longer than end of January, official statement will be posted on the website so we can pass it to sites as well as contact CMS O&C computing coordinators, ATLAS will be informed by Ilija
- I2: US nodes are up, still waiting for some pieces at Amsterdam

XRootD transfers monitoring
---------------------------
- changed to send streams from http to https
- xrootd works with TPC!

AOB
---
Riccardo:
- migrating RUCIO instance to a new service which is top-notch at CERN, - xroot is currently more complicated than http, still under investigation, not enough details to provide yet

There are minutes attached to this event. Show them.
    • 13:00 13:05
      News
      Conveners: Dr Derek Weitzel (University of Nebraska - Lincoln), Mr Marian Zvada (US CMS)
    • 13:05 13:10
      XRootD development for XCache

      General status of development, XRootD releases with new cache features, bug fixes, etc...

      Conveners: Mr Andrew Hanushevsky (SLAC National Accelerator Laboratory), Matevz Tadel (UCSD), Wei Yang (SLAC)
    • 13:10 13:15
      XCache issues

      XCache issues experienced during the deployment, configuration or otherwise causing problems in production or development.

    • 13:15 13:20
      ATLAS XCache deployment
      Conveners: Dr Ilija Vukotic (LAL), Wei Yang (SLAC)
    • 13:20 13:25
      CMS XCache deployment
      Conveners: Diego Ciangottini (Universita e INFN, Perugia (IT)), Mr Edgar Fajardo Hernandez (UCSD), Prof. Frank Wuerthwein (UCSD)
    • 13:25 13:35
      OSG StashCache deployment

      Status of OSG deployment, origin/caches operations, stashcp, usage, etc...

      Conveners: Brian Bockelman, Brian Lin (University of Wisconsin-Madison), Dr Derek Weitzel (University of Nebraska - Lincoln), Mr Edgar Fajardo Hernandez (UCSD), John Hicks (Internet2), Mr John Thiltges (University of Nebraska - Lincoln), Mr Marian Zvada (US CMS), Mr Matyas Selmeci (University of Wisconsin-Madison)
    • 13:35 13:40
      XRootD transfers monitoring
      Conveners: Dr Derek Weitzel (University of Nebraska - Lincoln), Diego Davila (CMS), Mr Edgar Fajardo Hernandez (UCSD)
    • 13:40 13:45
      AOB