Copy of 2024-10-31 Meeting Notes

\uD83D\uDDD3 Date

31 Oct 2024

\uD83D\uDC65 Participants

Lancs:
Glasgow:

Apologies:

CC:

\uD83E\uDD45 Goals

List of Epics
New tickets
Consider new functionality / items
Detailed discussion of important topics
Site report activity

\uD83D\uDDE3 Discussion topics

Current status of Echo Gateways / WNs testing

Recent sandbox’s for review / deployments:

Item	Presenter	Notes
Operational Issues Gateways and WNs: - Current status and upcoming changes (Gateway Auth failures)	Thomas, Jyothish (STFC,RAL,SC)
cms-aaa naming convention		cms-aaa is the only remaining personality to use proxy/ceph as the xrootd service names cms proxy cfg ->unified.cfg ceph-> tcp.cfg a separate naming convention would be more appropriate - main/supporting?
Compilation and rollout status with XrdCeph and rocky 8: 5.7.x	Thomas, Jyothish (STFC,RAL,SC)
HTCondor		Pelican - 'Wizard' like webUI for configuration Tokens - non WLCG tokens use different token profiles/protocols
Shoveler	Katy Ellis	Shoveler installation and monitoring
Deletion studies through RDR	Ian Johnson
Deletions	XRD-83 - Getting issue details... STATUS
WN changes	Alexander Rogovskiy	https://github.com/xrootd/xrootd/issues/2308 now in 5.7.1 (and patched 5.7.0). To be deployed over first 2 weeks of October
periodic hackaton?		group coding/testing for specific tasks
Xrootd testing framework		XRootD Site Testing Framework testing VM to be set up and be used for preprod testing Rob C - working on kubernetes deployment component Unit tests for xrootd (added since 5.7.0) ctest -VV -C Release -DCDASH=1 -DCOVERAGE=1 -S test.cmake CDASH sends the test to the xrootd cdash server https://my.cdash.org/index.php?project=XRootD run as non root https://github.com/stfc/xrootd-testing-framework/pulls
XrootD gateway specs		100Gb NICs current usage 25Gb NIC memory use of xrootd process ~25-35GB context switch ~800kHz CPU load ~10-20 Adding NICs to current gateways? Tom B - bonded NICs were hard to set up and operate, especially at scale keeping networking simple preferred on adding 100G NICs to current gws - switches might get overloaded
SKA Gateway box	James Walder	/wiki/spaces/UK/pages/215941180
Future developments ideas planning work	Ian Johnson Thomas, Jyothish (STFC,RAL,SC)	https://stfc.atlassian.net/wiki/spaces/X/pages/459997229/Notes+from+planning+meeting+22-04-2024?atlOrigin=eyJpIjoiNDRmNDEwOWI3Y2NhNDg5MDg4ZmZiYTNhNTliOWUwNmUiLCJwIjoiYyJ9
Tokens Status		To split this into Operational aspects and any development / long-term planning aspects. technical implementation to accept tokens is in place, issues seem to be due to VO use cases on scheduling and accounting accounting - it’s in the pipeline but not coming soon on APEL
Checksums improvements	Alexander Rogovskiy Thomas, Jyothish (STFC,RAL,SC)	There is a github issue open to merge this upstream https://github.com/xrootd/xrootd/issues/2338 streaming checksums

on GGUS:

Site reports

Lancaster: Our CHEP talk was well received. Having a rough time with CEPH the last couple of weeks requiring forcing a switch between the MDS servers. When things settle down and we don’t have CHEP write ups to do we’re whimsically thinking to take a peek at the xrootd-s3 stuff.

✅ Action items