2023-07-27 Meeting Notes
Date
Jul 27, 2023
Participants
@Thomas, Jyothish (STFC,RAL,SC)
@James Walder
Lancaster:
Glasgow:
Apologies:
Goals
List of Epics
New tickets
Consider new functionality / items
Detailed discussion of important topics
Site report activity
Discussion topics
Current status of Echo Gateways / WNs testing
Recent sandbox’s for review / deployments:
Item | Presenter | Notes |
|
---|---|---|---|
XRootD Releases | Sam | xrootd releases 5.6.0 and 5.6.1 have changed behaviour in WebDAV with header handling which means that they fail the "GET" part of the EGI availability tests. (This is covered in issue 2058 in the Xrootd github: [Regression] Chunked PUT creates empty files with 5.6.1 XrdHTTP · Issue #2058 · xrootd/xrootd · GitHub ) This will be fixed in 5.6.2, but if you were thinking of upgrading to 5.6.x for the fixes to SSL handshaking between RHEL7 and 9 releases, you should hold off for now if you care about EGI availability tests. |
|
Prefetch studies |
| Ongoing |
|
CMSD rollout |
| https://stfc.atlassian.net/browse/XRD-41 Status:
Next plans:
|
|
CMSD operations: observations |
| No observed problems on manager hosts. … |
|
CMSD outstanding items |
| Icinga / nags callout tests changes. Improved load balancing / server failover triggering better 'rolling server restart script' Documentation; setup / configuration / operations / troubleshooting / testing Review of Sandbox and deployment to prod. |
|
Other recent observations on Gateways |
| Lots of reads on Gateways using parallel threads (e.g. AIO); most likely coming from offsite XCaches for (only?) atlas VP reads … Occasional crashes in ‘thread’ calls Memory usage increasing (possibly due to the AIO calls) - may want to raise the systemd hard memory limit Gw6 (yesterday), “Forgot” how to do authentication - permission denied on many transfers; not caught by nagios checks |
|
Tokens testing |
| dev-gw4: Simple ‘fix’: needs |
|
AAA Gateways |
| Recent Sandbox updates with Katy: Sandbox ready for review: http://aquilon.gridpp.rl.ac.uk/sandboxes/diff.php?sandbox=jw-xrootd-aaa-5.5.4-3 |
|
Floating IPs for VM test cluster |
| Status:
|
|
SKA Gateway box |
| https://stfc.atlassian.net/wiki/spaces/UK/pages/215941180 Xrootd items:
|
|
on GGUS:
Site reports
Action items