OSG Technology Area Meeting, 18 May 2021¶

Coordinates: Conference: +1-415-655-0002, PIN: 146 266 9392, https://morgridge.webex.com/webappng/sites/morgridge/meeting/info/791d9dddc5464eb6a73fc7746331d06c (password sent separately)
Attending: Brian, Carl, Derek, Marco, Marian, Mat, Tim

Announcements¶

Kubernetes Hackathon this afternoon: https://opensciencegrid.atlassian.net/secure/RapidBoard.jspa?rapidView=34&sprint=32
- AI (Carl): Production Koji builder
Release
- AI (Mat): osg-xrootd and documentation need to be updated to use the voms-xrootd-plugin for 3.6
- AI (Mat): XRootD for EL8
- AI (Carl): Gratia probe Hosted CE quarantine issues
- AI (Carl): Gratia probe collection of VO data for token-based pilots
- Do we need to update the Gratia dirs for OSG 3.6? https://opensciencegrid.atlassian.net/browse/SOFTWARE-4621

Nightly XRootD multistream TPC tests are still failing; Derek will investigate since it might be related to xrootd-multiuser. However, this may have only been used for performance tests; Derek will ask Brian B. about real-world use cases and adjust priority accordingly.
xrootd-multiuser 1.0.1 expected soon.
SciTokens VO mapping: right now, pilots contain both X.509 and SciTokens credentials; Gratia prefers the former, so it may be difficult to do an integration test; adding unit tests will provide sufficient coverage for now.
AI (Carl): Run VMU tests for GlideinWMS 3.7.4.

Hosted CEs (BrianL): cert-manager changes (?) resulted in a slightly different LE chain being advertised from the CEs, requiring an update to osg-ca-certs-1.96 on the client side
XRootD (Derek): Justas opened tickets with XRootD, watching to see if OSG can contribute to debugging / development for fixes.
OzStar (Marian): Debugging Singularity; this may be due to attempting to run unprivileged Singularity without user namespaces. The ticket should be reassigned to the Software group; Dave Dykstra may be able to help.
CalTech (Mat): Problem with long lines in STARTD_CRON output causing startd ads not to get updated; created HTCondor ticket to fix and gave Justas a workaround.
LBL (Carl): Continuing to support LBL with setting up Squid. Dave Dykstra may be able to help.

GRACC ITB Collector k8s on Tiger Jira
GRACC S3 (CEPH) backup coming up, will coordinate a disaster recovery drill.
XRootD Multiuser: One more comment from Andy, so there will be a 1.0.1 (sorry)
- Known not to work with xrootd async io. But that might be ok.
StashCP go client is working, just waiting on effort from Derek on how to package / deliver it. As a reminder, compiling on EL7 makes it work on EL7, 8, ubuntu… Go is great!
XRootD accounting information (from Frank):
- May need help with automating the process of generating these reports. A month only takes a few minutes. Longer periods take much longer.
- Table of working set, read, and re-read for monthly, quarterly, and year.

None this week

3.5.35	Δ	Both	Δ	3.6	Δ	Total	Δ	Status
9	+0	2	+1	5	+2	16	+3	Open
5	+3	1	+0	1	+0	7	+3	Selected for Development
0	+0	2	-1	2	-1	4	-2	In Progress
3	+1	1	-2	0	+0	4	-1	Development Complete
5	-3	2	-10	0	-1	7	-14	Ready for Testing
0	+0	0	+0	0	+0	0	+0	Ready for Release
22	+1	8	-12	8	+0	38	-11	Total

None this week