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XCache DevOps Meeting Aug 13, 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

Or iPhone one-tap :
    US: +16699006833,,651969661#  or +14086380968,,651969661#
Or Telephone:
    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
    International numbers available: https://unl.zoom.us/zoomconference?m=wxCNSgMZiA-cVKSNowGYlQ

Attendees: Marian, Diego, Derek, Andy, BrianL, Diego, Edgar, Georg, Mat, Matevz, Riccardo, Ilija, JohnH

News
----
* no news always good news!

XRootD Development
------------------
* full release 5.0.1 available (see webpage), opportunity start pushing to EPEL
* gfal that doesn't work with release 5 in EPEL along with another development track where gfal works (compatlib is required if moving to 5), still some work needed for compatlib, OSG can provide this
* more gstream stuff work in progress
* no backport release announcement yet but wait for another 4.12.x with fixes

Issues
------
* no issues so far, ESNet cache mounting the logs directly to the nodes and keeps only -k 7 of logs while they want 2 weeks, looking at ENVAR option would work and override the defaults -k 7
* discussion on high availability, how it sacrifice performance and what other approach may be doable as new feature request

ATLAS
-----
* Ilija is on vacation next week
* working on reinforcement learning, xgboost vector
* running collectors in kubernetes cluster and intended to keep it that way, with fixed names (after the reboot/restart)

CMS
---
* no news other than discussion on high availability

Monitoring
----------
* validation document soon to share

OSG
---
* lot of stuff in progress for EL8 right now
* Houston I2 cache on the way back from vendor
* Amsterd I2 cache still stuck at customs in Amsterdam

AOB
---
* Goerg and his colleagues work in progress and may give a presentation some day
* Riccardo is resuming test after coming back from vacation, still struggling get xcache work in data-lake
* we may not have meeting next week, just stay tuned with annoucements
 

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