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WLCGOpsMinutes200702
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WLCG Operations Coordination Minutes, July 2, 2020
Highlights
Agenda
Attendance
Operations News
Special topics
WLCG Critical Services proposal followup
CERN Grid CA OCSP incident
SAM migration progress
Middleware News
Tier 0 News
Tier 1 Feedback
Tier 2 Feedback
Experiments Reports
ALICE
ATLAS
CMS
LHCb
Task Forces and Working Groups
GDPR and WLCG services
Accounting TF
Archival Storage WG
Containers WG
CREAM migration TF
dCache upgrade TF
DPM upgrade TF
StoRM upgrade TF
Information System Evolution TF
IPv6 Validation and Deployment TF
Machine/Job Features TF
Monitoring
MW Readiness WG
Network Throughput WG
Traceability WG
Action list
Specific actions for experiments
Specific actions for sites
AOB
Highlights
Agenda
https://indico.cern.ch/event/933764/
Attendance
local:
remote:
apologies:
Operations News
After a few years of inactivity, we propose to close the
Machine / Job Features TF
The next meeting is planned for Sep 3
Special topics
WLCG Critical Services proposal followup
CERN Grid CA OCSP incident
After a scheduled intervention on June 24, the CERN Grid CA OCSP service
became inaccessible from outside CERN (
OTG:0057432
)
Requests to the service were dropped by the CERN perimeter firewall
A CREAM CE will try to check a client certificate's status via OCSP,
if the existence of such an endpoint is indicated in the certificate details
It appears other CE flavors rely on CRLs only and just ignore OCSP services
Checks of CERN Grid CA certificates were then hanging until a timeout was reached
The CREAM client code would time out first, thus failing job submissions that
used CERN Grid CA certificates
This affected the 4 experiments and, through the SAM tests, sites running CREAM
Some A/R recomputations may be needed
The service was restored about 24h later on June 25
Some improvements are foreseen to make reoccurrence a lot less probable
Further details
here
SAM migration progress
Middleware News
Useful Links
WLCGBaselineTable
MW Issues
Storage Deployment
Baselines/News
Tier 0 News
Tier 1 Feedback
Tier 2 Feedback
Experiments Reports
ALICE
Mostly business as usual, no major issues
ATLAS
CMS
Covid-19 compute contributions being returned to experiment use
main proccessing activities:
Run 2 ultra-legacy Monte Carlo
Run 2 pre-UL Monte Carlo
migration to Rucio ongoing
production of nanoAOD samples configured for
PhEDEx
being bumped up to complete more quickl
LHCb
Task Forces and Working Groups
GDPR and WLCG services
Updated list of services
Accounting TF
Archival Storage WG
Containers WG
CREAM migration TF
Details
here
Summary:
90 tickets
14 done: 7 ARC, 7 HTCondor
16 sites plan for ARC, 15 are considering it
20 sites plan for HTCondor, 14 are considering it, 8 consider using SIMPLE
14 tickets on hold, to be continued in the coming weeks / months
7 tickets without reply
response times possibly affected by COVID-19 measures
dCache upgrade TF
DPM upgrade TF
StoRM upgrade TF
Information System Evolution TF
IPv6 Validation and Deployment TF
Detailed status
here
.
Machine/Job Features TF
Monitoring
MW Readiness WG
Network Throughput WG
perfSONAR infrastructure status - 4.2.4 versions was released - please upgrade
Release notes:
https://www.perfsonar.net/releasenotes-2020-04-01-4-2-4.html
100 Gbps perfSONAR mesh was established
with 6 participating sites (TRIUMF, CERN, BNL, KIT, IC, AGLT2, Prague)
100G testing/tuning resources added to WG Twiki (
https://twiki.cern.ch/twiki/bin/view/LCG/NetworkTransferMetrics#perfSONAR_100G
)
Testbed mailing list to join:
http://cern.ch/simba3/SelfSubscription.aspx?groupName=wlcg-perfsonar-100g
New LHCONE mesh established testing from sites to R&E
perfSONAR endpoints (on LHCONE)
OSG/WLCG infrastructure
Discussing plan of migration to the push model - direct publishing of results from toolkits to
RabbitMQ
ESnet (router) traffic feed now available, working on its integration to our pipeline - prototype already working
WLCG Network Throughput Support Unit: see
twiki
for summary of recent activities.
Traceability WG
Action list
Creation date
Description
Responsible
Status
Comments
Specific actions for experiments
Creation date
Description
Affected VO
Affected TF/WG
Deadline
Completion
Comments
Specific actions for sites
Creation date
Description
Affected VO
Affected TF/WG
Deadline
Completion
Comments
AOB
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Topic revision: r7 - 2020-07-02
-
StephanLammel
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