Operations Bulletin 040716

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Bulletin archive


Week commencing Monday 27th June 2016
Task Areas
General updates

Monday 28th June

  • WLCG weekly operations meeting update.
  • SG/DPM: Possible WLCG demonstrator on caching storage.
  • European Grid Infrastructure EGI Trust Anchor release 1.75
  • AL: a batch system used entirely by non-LHC users?
  • Next DiRAC sites under discussion.
  • Deletion of GridPP-CSIRTS list.
  • Decommissioning of the regional Nagioses postponed until 1st of July.
  • HPC-SIG "scheduling" workshop - Wednesday 14th Sep 2016 (Warwick University).
  • Decommissioning of the EFDA-JET (NGI_UK) site has started.


Monday 20th June

  • There is no GridPP ops this week due to the security training and HEPSYSMAN meeting.
  • John B: Heavy writes starving reads

Monday 13th June


Monday 6th June

WLCG Operations Coordination - AgendasWiki Page

Monday 28th June

  • Next MWRG is 6th July.
  • Next ops coordination group meeting 7th July - focus on IPv6

Monday 7th June

  • There was a WLCG ops coordination meeting last Thursday: Agenda | Minutes
    • some of May's events:
    • The decision to create a WLCG Accounting Task Force was approved at the May 24th MB.
    • PIC published on May 18th the SIR on the T10KD problems they were experiencing since last December.
    • Web info around certificates was updated to reflect changes around the OSG PKI.
    • GGUS Release on June 1st. Release notes available.

Tuesday 24th May

  • There was a middleware readiness meeting on 18th May. Agenda | Minutes
  • The next WLCG ops coordination meeting will be on 2nd June (focus monitoring consolidation).

Monday 1st May

  • There was a WLCG ops coordination meeting last Thursday. Agenda | Minutes.
    • SL5 decommissioning (EGI, April 30, 2016). SL5 'ops' service probes will get CRITICAL. The whole retirement process is tracked here.
    • New Traceability and isolation working group will have a dedicated session in May pre-GDB.
    • New Task Force on Accounting review is under preparation to start addressing accounting issues.
    • A detailed review of the Networking and Transfers WG was done. This includes a status report, ongoing actions and future R&D projects. More details in the agenda slides.
Tier-1 - Status Page

Tuesday 28th June A reminder that there is a weekly Tier-1 experiment liaison meeting. Notes from the last meeting here

  • We are still investigating problems with the stability of the tape library control software. However, this has been stable for the last six days now.
  • All access to "GEN Scratch" storage in Castor has now been stopped.
  • One of our three WMS systems (lcgwms06) is being decommissioned - and all access to this WMS has now stopped.
  • One of our CEs (ARC-CE02) has been reinstalled on a different virtual infrastructure.
Storage & Data Management - Agendas/Minutes

Wednesday 29 June

  • Data/storage highlights from last week's hepsysman - Marcus' ZFS talk
  • Oliver proposes pre-GDB on data in September

Wednesday 15 June

  • Are we any closer to writing up (or down) what a future T2 will look like? Five years from now?

Wednesday 08 June

  • An audience with Brian Bockelman!
  • Special thanks to Alastair Dewhurst for "lending" us Brian (during the visit of the latter to the former) and to Sam for taking additional notes.

Wednesday 01 June

  • LSST experiences with using GridPP - what is the minimal effort to get started? Are the data features useful/known/used?
  • Lots of interesting submissions to CHEP
  • IPv6 - time to showcase our work? Can we still show interesting IPv6 work in a post-ewanian infrastructure?


Tier-2 Evolution - GridPP JIRA

Mon 6 Jun

  • GridPP VM vs DIRAC version mismatch found and worked-around.

Friday 29 Apr

  • Vac 01.00 released.

Tuesday 5 Apr

  • Vac 00.22 release (01.00 pre-release) ready. Includes Squid-on-hypervisor config in Puppet module.
  • Aim to do Vac 01.00 release immediately after Pitlochry.

Tuesday 22 Mar

  • GridPP DIRAC SAM tests now have gridpp and vo.northgrid.ac.uk pages
  • Some pheno jobs have been run on VAC.Manchester.uk
  • ATLAS cloud init VMs now running at Liverpool too

Tuesday 15 Mar

  • Vac 00.21 deployed on all/some machines at all 5 production Vac sites
  • Oxford Vac-in-a-Box set up in production
  • ATLAS pilot factory at CERN configured for our ATLAS cloud init VMs
  • ATLAS cloud init VMs running production jobs at Manchester and Oxford; being enabled at other sites
  • vo.northgrid.ac.uk DIRAC jobs running in GridPP DIRAC VMs: should work for any GridPP DIRAC VO, since a parameter to the VM config.
  • Multipayload LHCb pilot scripts tested in VMs: same pilot scripts can be used on VM or batch sites in multiprocessor slots.


Accounting - UK Grid Metrics HEPSPEC06 Atlas Dashboard HS06

Tuesday 14th June

  • GridPP accounting switched to use the 'new' EGI accounting portal.
  • APEL delays from UK sites look about 'normal' (i.e. delays are typical).

Tuesday 9th February

  • 4th Feb: The data from the APEL summariser that was fixed yesterday has now propagated through the data pipeline and the Accounting Portal views and the Sync and Pub tests are all working again.
  • Sheffield is slightly behind other sites (but looks normal) and so is QMUL.

Tuesday 24th November

  • Slight delay for Sheffield.

Tuesday 3rd November

  • APEL delay (normal state) Lancaster and Sheffield.

Tuesday 20th October The WLCG MB decided to create a Benchmarking Task force led by Helge Meinhard see talk

Documentation - KeyDocs

Friday 27th May

  • New Approved VOs published; icecube and fermilab

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

Tuesday 17th May

  • TW implementing use-cases summary matrix according to these:
    • CERN@school - LUCID (full workflow with DIRAC)
    • GalDyn (full workflow with DIRAC)
    • PRaVDA (full workflow with DIRAC)
    • LSST (full workflow with Ganga + DIRAC)
    • EUCLID (full workflow at the RAL T1)
    • DiRAC (data storage/transfer)
    • SNO+ (data transfer/networking)

Wednesday 4th May

Introduction added to explain _why_ CGROUPS are desired when using ARC/Condor.

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


Tuesday 26th April

Statement on recent history of LSST VOMS records. To be discussed at Ops Meeting.

  • Feb 16: 3 x VOMS servers, port 1503, names: voms.fnal.gov (DigiCert-Grid, admin), voms1.fnal.gov (DigiCert-Grid, not admin), voms2.fnal.gov (opensciencegrid , admin).
  • Apr 18: 1 x VOMS server. port 15003, names: voms.fnal.gov (opensciencegrid, admin). Caused by a hitch with security that caused the omission of some data. GGUS: https://ggus.eu/?mode=ticket_info&ticket_id=120925. Fixed.
  • Apr 21: 3 x VOMS servers, port 15003, names: voms.fnal.gov (opensciencegrid, admin), voms1.fnal.gov (opensciencegrid, not admin), voms2.fnal.gov opensciencegrid admin

So, similar to how it was in feb, but DNs (and CA_DNs) of 2 certs changed. But other things to note:

Please discuss. 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 June

Monday 9th May

  • There was an EGI ops meeting today.
    • SL5 status was reviewed. Services remaining: WMS/LB being decommissioned at Glasgow; Lanacaster BDII scheduled for upgrade; Oxford SAM/VO Nagios. This is only on SL5 and plans across all NGIs to move to a central ARGO service are in place; RAL T1 Castor SRM systems. SRM upgrade waiting on Castor upgrade.


Monday 18th April


Monitoring - Links MyWLCG

Tuesday 1st December


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 28th June

  • The ROD rota needs to be updated.

Friday 17th June

  • The ROD Dashboard has been slow to update one ticket: 122190 against RHUL. This I verified some time (hours) ago and it is still showing up. Hopefully the dashboard will catch up over the weekend.


Monday 13th June

  • Quiet week.
  • Still problems at Brunel due to there being two bdiis.


Tuesday 31st May

  • EFDA Jet : EFDA admin's certificate has expired. He has applied for new certificate.
  • Brunel: Brunel is running two site bdii's and it is confusing EGI status dashboard. A ticket has been opened.
  • RHUL: It had some network issues and it seems that it hasn't been solved yet.
  • Liverpool, Sussex and ECDF has an availability ticket

Tuesday 15th March

  • Normal week with few alarms which were fixed in time. Birmingham has a low availability ticket. ECDF has ticket on hold as it test ARC CE and putting this CE in downtime might effect proper job test from ATLAS.
Rollout Status WLCG Baseline

Tuesday 7th December

  • Raul reports: validation of site BDII on Centos 7 done.

Tuesday 15th September

Tuesday 12th May

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


References


Security - Incident Procedure Policies Rota

Tuesday 28th June

  • Updated IGTF distribution version 1.75 available for download
  • Pre-GDB Security Operations Centre (SOC) Working Group F2F meeting - 12th July @ CERN

Tuesday 21st June

Tuesday 14th June

Tuesday 7th June

  • Reminder - HEP SYSMAN Security training Tues Jun 21st
  • EGI SVG advisory for 'critical' risk vulnerability in one product
  • EGI SVG advisory for 'high' risk vulnerability in Nova API for OpenStack


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 10th May

  • Next LHCOPN and LHCONE meeting: Helsinki (FI) 19-20 of September 2016: Agenda.

Tuesday 22nd March

Tuesday 8th December

  • Given the recent network issues and role of GridPP DIRAC, there are plans to have a slave DNS for gridpp.ac.uk at Imperial and hopefully the T1 too. Andrew will seek an update to the whois records and name servers once the other host sites are confirmed.
  • Looking at the network problems this week will be of interest. Duncan supplied this link and Ewan the one for the dual stack instance.
Tickets
Tools - MyEGI Nagios

Monday 13th June

  • Active Nagios instance moved to Lancaster

Tuesday 5th April 2016

Oxford had a scheduled network warning so active nagios instance was moved from Oxford to Lancaster. I am not planning to move it back to Oxford for the time being.


Tuesday 26th Jan 2016

One of the message broker was in downtime for almost three days. Nagios probes picks up a random message broker and failover is not working so a lot of ops jobs hanged for long time. Its a known issue and unlikely to be fixed as SAM Nagios is in its last leg. Monitoring is moving to ARGO and many things are not clear at the moment.

Monday 30th November

  • The SAM/ARGO team has created a document describing Availability reliability calculation in ARGO tool.
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 23rd February

  • For January:

ALICE: All okay.

RHUL 89%:89% Lancaster 0%:0%

RALPP: 80%::80%

RALPP: 77%:77%

  • Site responses:
    • RHUL: The largest problem was related to the SRM. The DPM version was upgraded and it took several weeks to get it working again (13 Jan onwards). Several short-lived occurrences of running out of space on the SRM for non-ATLAS VOs. For around 3 days (15-17 Jan) the site suffered from a DNS configuration error by their site network manager which removed their SRM from the DNS, causing external connections such as tests and transfers to fail. For one day (25 Jan) the site network was down for upgrade to the 10Gb link to JANET. Some unexpected problems occurred extending the interruption from an hour to a day. The link has been successfully commissioned.
    • Lancaster: The ASAP metric for Lancaster for January is 97.5 %. There is a particular problem with ATLAS SAM tests which doesn’t affect the site activity in production and analysis and this relates to the path name being too long. A re-calculation has been performed.
    • RALPP: Both CMS and LHCb low figures are due to specific CMS jobs overloading the site SRM head node. The jobs should have stopped now.



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.

Highlights from this meeting are now included in the Tier1 report farther up this page.

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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