Operations Bulletin Latest

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Bulletin archive


Week commencing 10th August 2015
Task Areas
General updates

Tuesday 11th August

Tuesday 4th August

  • There was an EGI OMB meeting last Thursday (Agenda).
    • NGI A/R trends: Availability typically 87%-90%. 250 of 290 sites ok. Up to 6 NGIs failing A/R target. UK no failing months.
    • Security update: SVG procedure update. Because software used changing.Close working with CSIRT. No longer set 3 day Target Date (TD). Some vulnerabilities are policy violation issues - risk assess only. VM endorser should follow checklist. VM operator responsible for patching in VM. Both roles should receive updates. 29 RAT (Risk Advisory Team) members.
    • ARGO updates: test environment; removed components (e.g. MyEGI) from SAM; production instance from September. Central results will use from October.
    • UMD-4 & MW updates: UMD 3.13.0 released 1st July. Minor releases during July to fix bugs. Goal to have latest products ready for release within 2 months. UMD-4 - several packages EPEL7 ready. Integrating FedCloud products ongoing.Looking for early adopters for: ARC clients; DPM-mysql; gfal2; squid; CVMFS; CentOS7....


Tuesday 28th July

  • Science Board has convened... but the GridPP outcome will not be announced for some weeks. We should know by the GridPP35 meeting.
  • GGUS was down at the weekend due to an unscheduled downtime.
  • Winnie: minor VOs sending to queues they're not allowed to after re-YAIM of CREAM CE. (24/07)
  • Brian: automating storage dumps and uploads for ATLAS to be extended to T2s ( possibly)
  • LSST French CVMFS does not 'UK' software so is of limited use.
  • The DIRAC server outage (also IC top BDII) - lessons learned and resilience options.
  • Dan: how would you set up an xrootd server for another vo like snoplus? (22/07). Relates to Remote loading of Grid files for SNO+.

Tuesday 21st July

  • Various requests (e.g. via EGI) to express interest in "Compute Resources for PanCancer Analysis of Whole Genomes" call.
  • MM raised a question about remote loading of Grid files for SNO+ (email 20th July).
  • From Winnie: yaim on CREAM-CE - no update of var/lib/bdii/gip/ldif/ files. Should it?
  • From Catalin (16th July): The decommissioning process of the 'gridpp.ac.uk' CVMFS space is about halfway, and it came to my attention the fact that sites are defining the CVMFS_REPOSITORIES variable at WN level. Whilst this variable was mandatory with cvmfs v2.0.X, this is not case with v2.1.Y. I would ask site admins to remove the 'gridpp.ac.uk' repository names from there, except the regional UK VO repositories (londongrid, scotgrid, southgrid, north grid)
  • /cvmfs/gridpp-vo help. Down to the repository? Is more documentation needed here?
  • Atlas ADC meeting containing discussion of the future of cloud support is at 4.30 on the 21st of July, and sites are welcome to attend.
  • For those who missed it: [arxiv.org/abs/1507.03414 observation of a new particle with LHCb]! Also see the press release.
  • Minutes of the last EGI operations meeting are now available.
  • Process for uploading files to CVMFS.
WLCG Operations Coordination - Agendas

Tuesday 4th August

  • There was a WLCG ops coordination meeting on Thursday 30th July: Agenda Minutes.
  • News: Reminder of GGUS documentation (and features like SOAP interface and report generator). There is a new ops portal. See this explanation. Feedback welcome/requested.
  • MIddleware: dCache 2.6.x support ended in May. Decommission by 21st September (Calendar). Critical vulnerability affecting RedHat 5, 6 and 7 (access via local user account). Workaround until patched.
  • T0/1 services: JINR, NL-T1 and PIC reported SE upgrades.
  • T0 news: CMS & ATLAS assigned tickets to T0 by mistake. Upgrades for vulnerability underway. Clarification on support units requested.
  • T1 feedback: None.
  • T2 feedback: None.
  • ALICE: High activity. Raw data copies in CASTOR timing out at CERN and job submissions have become slow a few times. NDGF reported inefficient data transfers.
  • ATLAS: Tier-0 studies of "slow" nodes (1/2 to 1/3 others). Reviewing Central Service monitoring. Concern at GGUS unscheduled downtime. Kibana was down.
  • CMS: DIGI-RECO using all T1s and 15T2s. Undertaking assignment of custodial location of Primary Datasets to T1 sites. Ops issues: PIC disk oversubscribed. SAM test dataset removed at several sites. HammerCloud monitoring issue affecting several sites. User tickets now in SNOW.
  • LHCb: Ops: Finishing restripping of Run1 data and Run2 50s ramp. Problems with LSF and DIRAC. Looking at Hammercloud testing and perfSONAR data extraction.
  • glexec: NTR
  • RFC proxies: NTR
  • Machine/Job features: Nagios probe running for LHCb SAM. Includes Imperial.
  • MW readiness: ECDF and Grid to will look at CentOS7/SL7 in autumn. Next meeting 16th September.
  • Multicore: No report.
  • IPv6: No report.
  • Squid monitoring (& HTTP proxy discovery): Alastair has implemented next step.
  • Network & Transfer metrics: Tested publishing perfSONAR to message bus directly for OSG collector. OSG datastore expected to be in production end July; Testing proximity service; Expt. use cases reviewed; FTS performance studies.
  • HTTP: NTR
  • Info system: Implementing REBUS set of easy fixes. Set of actions defined.


Tuesday 27th July

  • The next WLCG ops meeting is this Thursday 30th July. Agenda.


Tier-1 - Status Page

Tuesday 11th August A reminder that there is a weekly Tier-1 experiment liaison meeting. Notes from the last meeting here

  • the outages of the previous week preceded a long-planned scheduled intervention on 4th August when an engineer from the router vendor company was present. As a result of this intervention and associated discussions we believe these router problems are now largely understood and we are again running with a resilient pair of network routers.
  • There was a problem with a core switch and router on the morning of Saturday 8th August. The RAL site was offline from approx 7:30 until 10:00.
  • Looking upgrading Castor disk servers OS during second half of August and updating the Castor Oracle database during September.
  • Ongoing testing of worker nodes running a new configuration where they obtain the grid middleware via cvmfs. Will now move to rollout across more nodes.
Storage & Data Management - Agendas/Minutes

Wednesday 08 July

  • Huge backlog of ATLAS data from Glasgow waiting to go to RAL, and oddly varying performance numbers - investigating
  • How physics data is like your Windows 95 games

Wednesday 01 July

  • Feedback on CMS's proposal for listing contents of storage
  • Simple storage on expensive raided disks vs complicated storage on el cheapo or archive drives?

Wednesday 24 June

  • Heard about the Indigo datacloud project, a H2020 project in which STFC is participating
  • Data transfers, theory and practice
    • Somewhat clunky tools to set up but perform well when they run
    • Will continue to work on recommendations/overview document
    • Worth having recommendations/experiences for different audiences - (potential) users, decision makers, techies


Accounting - UK Grid Metrics HEPSPEC06 Atlas Dashboard HS06

Monday 20th July

  • Oxford publishing 0 cores from Cream today. Maybe they forgot to switch one off. Check here.

Tuesday 14th July

  • QMUL and Sheffield appear to be lagging with publishing by a week.
  • Please check your multicore publishing status (especially those sites mentioned in June).

Tuesday 16th June

  • Region not publishing accounting by number of cores.
    • "0" core submission hosts:
    • ce3.dur.scotgrid.ac.uk
    • ce4.dur.scotgrid.ac.uk
    • cetest02.grid.hep.ph.ic.ac.uk
    • hepgrid5.ph.liv.ac.uk
    • hepgrid6.ph.liv.ac.uk
    • hepgrid97.ph.liv.ac.uk
    • svr009.gla.scotgrid.ac.uk
    • t2ce06.physics.ox.ac.uk

Tuesday 9th June

  • Delay noted for Sheffield


Documentation - KeyDocs

Tuesday 28th July

  • Ewan: /cvmfs/gridpp-vo help ... there's a lot of historical stuff on the GridPP wiki that makes it look a lot more complicated than it is now. We really should have a bit of a clear out at some point.

Tuesday 23rd June

  • Reminder that documents need reviewing!

Tuesday 9th June

LSST voms2 records are not present in VOID cards yet. As a workaround, a temporary note of the actual values has been added to the LSST section of Approved VOs.

https://www.gridpp.ac.uk/wiki/GridPP_approved_VOs

General note

See the worst KeyDocs list for documents needing review now and the names of the responsible people.

Interoperation - EGI ops agendas

Monday 13th July

  • SR updates (small because it's summer):
      • gfal2 2.9.1
      • storm 1.11.9
      • srm-ifce 1.23.1....
      • gfal2-python 1.8.1
    • In Verification
      • gfal2-plugin-xrootd 0.3.4
  • Accounting
    • [John Gordon] "Of the WLCG sites we now have 97%+ of cpu reported with cores. I expect you all saw my recent email to GDB naming 16 sites. If one German and one Spanish site and the four Russians start publishing we will jump to 99%+"
    • New list of sites needing to update multicore accounting being prepared this evening (Monday) by Vincenzo
  • SL5 decommissioning date March 2016;
  • Next meeting 10th August

Monday 15th June

  • There was an EGI operations meeting today: agenda.
  • New Action: for the NGIs: please start tracking which sites are still using SL5 services: how many services, and for each service if still needed on SL5, if upgrades on SL5 services are expected). A wiki has been provided to record updates. Also interesting to understand who is using Debian.


Monitoring - Links MyWLCG

Tuesday 16th June

  • F Melaccio & D Crooks decided to add a FAQs section devoted to common monitoring issues under the monitoring page.
  • Feedback welcome.


Tuesday 31st March

Monday 7th December

On-duty - Dashboard ROD rota

Monday 3rd August

  • Quiet week. Next Gareth.

Monday 13th July

  • Quiet week, once the (unofficial) ARC fix was implemented on the nagios side.
  • Low/best efforts ROD effort after this week for 1-2 weeks.

Monday 6th July

  • DB: Between the fake ARC alarms and the fake bdii alarms it's hard to see the real alarms.
Rollout Status WLCG Baseline

Tuesday 12th May

  • MW Readiness WG meeting Wed May 6th at 4pm. Attended by Raul, Matt, Sam and Jeremy.

Tuesday 17th March

  • Daniela has updated the [ https://www.gridpp.ac.uk/wiki/Staged_rollout_emi3 EMI-3 testing table]. Please check it is correct for your site. We want a clear view of where we are contributing.
  • There is a middleware readiness meeting this Wednesday. Would be good if a few site representatives joined.
  • Machine job features solution testing. Fed back that we will only commence tests if more documentation made available. This stops the HTC solution until after CHEP. Is there interest in testing other batch systems? Raul mentioned SLURM. There is also SGE and Torque.

References


Security - Incident Procedure Policies Rota

Tusday 11th August

  • Update 2 - EGI SVG Advisory 'Critical' risk libuser local root exploit CVE-2015-3245
  • CVE-2015-3245 - EGI-CSIRT issued update or be suspended notices to 100+ sites. (None in the UK so thanks to all - IanN)

Tuesday 4th August

  • Update on Critical vulnerability affecting RedHat 5, 6, 7 broadcast by EGI CSIRT EGI CSIRT are intending to turn on monitoring for vulnerable machines (libuser version and mitigation) in next days. Schedule depends on develop/testing the probe. It is understood SL6 library update is due out 3/7/15(Monday). Discussions following this alert are likely to result in some changes/clarification to the alert template.


Next UK Security Team meeting is Weds 19th Aug.

The EGI security dashboard.


Services - PerfSonar dashboard | GridPP VOMS

- This includes notifying of (inter)national services that will have an outage in the coming weeks or will be impacted by work elsewhere. (Cross-check the Tier-1 update).

Tuesday 14th July

  • GridPP35 in September will have a part focus on networking and IPv6. This will include a review of where sites are with their deployment. Please try to firm up dates for your IPv6 availability between now and September. Please update the GridPP IPv6 status table.

Tuesday 23rd June

  • GridPP issued a position statement regarding LHCONE.
    • ...Concerning LHCONE for both T1 and T2. The high level summary is that the UK is not in favour, as within the UK we have no explicit need for LHCONE for any reason of T1 capacity planning, but to implement it involves additional complexity and possibly cost. The current system works fine and we therefore see no overriding reason to remove T1-T1 transit via LHCOPN. ...The UK is sensitive to the “collective” needs of the community, and as a general statement we would always seek to address any legitimate request agreed by the WLCG MB in order to play our role in meeting international expectations.

Tuesday 12th May

  • LHCOPN & LHCONE joint meeting at LBL June 1st & 2nd. Agenda taking shape.

Tuesday 31st March

Tickets

Monday 10th August 2015, 15.00 BST

T'Other VO Nagios looks alright at time of writing.

24 Open UK tickets this week.

Tier 1
115512 (5/8)
An interesting ticket - where a banned user is still banned after moving to LHCB from Biomed (no, he's not called Heinz). In Progress (6/8) Update - Andrew has asked that the ticket be reassigned to the argus devs as the pepd logs are showing oddness. Waiting for reply now.

Bristol
115565 (7/8)
Bristol's phedex agents are down, and have been for a few days. I might have dreamt this, but thought that the Bristol Phedex service might not be hosted at Bristol, especially after RALPP had a similar ticket (115566) at the same time. Assigned (7/8) Update - solved

Manchester
115504 (ROD Ticket)
Solved 115399 (Wiki Ticket)
Still Open Both these tickets look like they can be closed.

115525 (5/8)
Atlas deletion errors after a a disk server fell over- nothing wrong with the ticket handling, but Alessandra brings up a point that always niggles me - the emphasis on the total number of transaction errors and not the number of affected unique files. In progress (8/8)

QMUL
114573 (23/6)
LHCB ticket sparked by those IPv6 problems. Still no word from Vladimir; Raja - could you comment? I suspect there's been plenty of room for LHCB jobs in QM's (and everyone else who mainlines atlas jobs) queues this weekend. Waiting for reply (21/7)

Tools - MyEGI Nagios

Tuesday 09 June 2015

  • ARC CEs were failing nagios test becuase of non-availability of egi repository. Nagios test compare CA version from EGI repo. It started on 5th June and one of the IP addresses behind webserver was not responding. Problem went away in approximately 3 hours. The same problem started again on 6th June. Finally it was fixed on 8th June. No reason was given in any of the ticket opened regarding this outage.

Tuesday 17th February

  • Another period where message brokers were temporarily unavailable seen yesterday. Any news on the last follow-up?

Tuesday 27th January

  • Unscheduled outage of the EGI message broker (GRNET) caused a short-lived disruption to GridPP site monitoring (jobs failed) last Thursday 22nd January. Suspect BDII caching meant no immediate failover to stomp://mq.cro-ngi.hr:6163/ from stomp://mq.afroditi.hellasgrid.gr:6163/


VOs - GridPP VOMS VO IDs Approved VO table

Tuesday 19th May

  • There is a current priority for enabling/supporting our joining communities.

Tuesday 5th May

  • We have a number of VOs to be removed. Dedicated follow-up meeting proposed.

Tuesday 28th April

  • For SNOPLUS.SNOLAB.CA, the port numbers for voms02.gridpp.ac.uk and voms03.gridpp.ac.uk have both been updated from 15003 to 15503.

Tuesday 31st March

  • LIGO are in need of additional support for debugging some tests.
  • LSST now enabled on 3 sites. No 'own' CVMFS yet.
Site Updates

Tuesday 24th February

  • Next review of status today.

Tuesday 27th January

  • Squids not in GOCDB for: UCL; ECDF; Birmingham; Durham; RHUL; IC; Sussex; Lancaster
  • Squids in GOCDB for: EFDA-JET; Manchester; Liverpool; Cambridge; Sheffield; Bristol; Brunel; QMUL; T1; Oxford; Glasgow; RALPPD.

Tuesday 2nd December

  • Multicore status. Queues available (63%)
    • YES: RAL T1; Brunel; Imperial; QMUL; Lancaster; Liverpool; Manchester; Glasgow; Cambridge; Oxford; RALPP; Sussex (12)
    • NO: RHUL (testing); UCL; Sheffield (testing); Durham; ECDF (testing); Birmingham; Bristol (7)
  • According to our table for cloud/VMs (26%)
    • YES: RAL T1; Brunel; Imperial; Manchester; Oxford (5)
    • NO: QMUL; RHUL; UCL; Lancaster; Liverpool; Sheffield; Durham; ECDF; Glasgow; Birmingham; Bristol; Cambridge; RALPP; Sussex (14)
  • GridPP DIRAC jobs successful (58%)
    • YES: Bristol; Glasgow; Lancaster; Liverpool; Manchester; Oxford; Sheffield; Brunel; IC; QMUL; RHUL (11)
    • NO: Cambridge; Durham; RALPP; RAL T1 (4) + ECDF; Sussex; UCL; Birmingham (4)
  • IPv6 status
    • Allocation - 42%
    • YES: RAL T1; Brunel; IC; QMUL; Manchester; Sheffield; Cambridge; Oxford (8)
    • NO: RHUL; UCL; Lancaster; Liverpool; Durham; ECDF; Glasgow; Birmingham; Bristol; RALPP; Sussex
  • Dual stack nodes - 21%
    • YES: Brunel; IC; QMUL; Oxford (4)
    • NO: RHUL; UCL; Lancaster; Glasgow; Liverpool; Manchester; Sheffield; Durham; ECDF; Birmingham; Bristol; Cambridge; RALPP; Sussex, RAL T1 (15)


Tuesday 21st October

  • High loads seen in xroot by several sites: Liverpool and RALT1... and also Bristol (see Luke's TB-S email on 16/10 for questions about changes to help).

Tuesday 9th September

  • Intel announced the new generation of Xeon based on Haswell.



Meeting Summaries
Project Management Board - MembersMinutes Quarterly Reports

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GridPP ops meeting - Agendas Actions Core Tasks

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RAL Tier-1 Experiment Liaison Meeting (Wednesday 13:30) Agenda Meeting takes place on Vidyo.

Wednesday 8th July 2015 Operations report

  • Lots of preparation for the RAL Open Days. These start today (8th) and culminate in the public day on Saturday (11th).
  • Intervention on faulty router being prepared for 4th August.
WLCG Grid Deployment Board - Agendas MB agendas

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NGI UK - Homepage CA

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Events
UK ATLAS - Shifter view News & Links

Atlas S&C week 2-6 Feb 2015

Production

• Prodsys-2 in production since Dec 1st

• Deployment has not been transparent , many issued has been solved, the grid is filled again

• MC15 is expected to start soon, waiting for physics validations, evgen testing is underway and close to finalised.. Simulation expected to be broadly similar to MC14, no blockers expected.

Rucio

• Rucio in production since Dec 1st and is ready for LHC RUN-2. Some fields need improvements, including transfer and deletion agents, documentation and monitoring.

Rucio dumps available.

Dark data cleaning

files declaration . Only Only DDM ops can issue lost files declaration for now, cloud support needs to fill a ticket.

• Webdav panda functional tests with Hammercloud are ongoing

Monitoring

Main page

DDM Accounting

space

Deletion

ASAP

• ASAP (ATLAS Site Availability Performance) in place. Every 3 months the T2s sites performing BELOW 80% are reported to the International Computing Board.


UK CMS

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UK LHCb

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UK OTHER
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To note

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