Operations Bulletin Latest

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Bulletin archive


Week commencing Monday 7th March 2016
Task Areas
General updates

Tuesday 8th March


Tuesday 1st March


Tuesday 23rd February

  • site advice on how to deal with umbrella VOs
  • gridpp.ac.uk has no AAAA record
  • From the 29th Feb the WLCG Operation meeting will be held only on Monday (the Thursday meeting will be cancelled). In addition sites are asked to pre-fill their report or to send an email to the SCOD list.
  • The WLCG MB has decided to stop further deployment of glexec. Current deployments are expected to continue with support.
  • Steve's tests - are they still useful... could they be made more relevant?
  • Reminder: Registration for GridPP36 is now open.
  • Lisbon follow-up. Ian Bird's MB summary.
WLCG Operations Coordination - AgendasWiki Page

Tuesday 1st March

  • The next WLCG Ops Coord meeting originally planned for this Thursday 3rd March (1st Thursday of the month) will be postponed since it clashes with the ATLAS S&C and CMS Data Management 2-day workshop.
  • MJF technical note and Torque/PBS implementation available.

Tuesday 23rd February

  • There was an ops coordination meeting on Thursday 18th.
  • The new Experiments Test Framework (ETF) will be tentatively ready in April. It will contain few user changes.
  • The WLCG workshop and the MB decided to freeze the gLExec deployment.
  • LHCb to discuss with Multicore deployment TF experts about the future of the TF and advise the sites.
  • The T0 and T1s to install the patches for the critical vulnerability https://wiki.egi.eu/wiki/SVG:Advisory-SVG-CVE-2015-7547 announced Wednesday.

Tuesday 9th February

  • The next ops coordination meeting will be on 18th February.


Tier-1 - Status Page

Tuesday 8th March A reminder that there is a weekly Tier-1 experiment liaison meeting. Notes from the last meeting here

  • We are working a refresh of the database system behind the LFC.
  • We are preparing to put a HAProxy load-balancer in front of the FTS service. Initially this will be for our "test" FTS3 service (used by Atlas).
  • Should have updated FTS3 (Test and Production) by the time of this meeting.
  • Castor 2.1.15 update is waiting. This is pending resolution of a problem found during testing showing slow file access.
  • Lots of patching and rebooting (for glibc) done.
Storage & Data Management - Agendas/Minutes

Wednesday 02 Mar

  • GridPP as a data infrastructure - towards the science DMZ?

Wednesday 24 Feb

  • Snoplus data model. Looks a lot like DiRAC? (so far?)
  • The write up is in the minutes!

Wednesday 17 Feb

  • Report from the secret ATLAS meeting on Monday
    • Sites to run cache with RUCIO and ARC CEs?
    • Dynafed or RUCIO redirect?
  • Which goals if any should we set for achieving interesting things to be reported at GridPP36?

Wednesday 10 Feb

  • Duncan and Sam reporting from the WLCG workshop, Elena from ATLAS Jamboree
    • Grid as object store, fewer SRM endpoints
    • Caching and metadata management implementations/strategies
Tier-2 Evolution - GridPP JIRA

Monday 29 Feb

  • Vac 00.21 released, with new MJF
  • EGI operations MB presentation positively received

Tuesday 23 Feb

  • Vacuum Platform draft HSF technical note, setting out interfaces between VMs and VM lifecycle managers, in particular user_data templates, the $JOBOUTPUTS mechanism, and the VacQuery UDP protocol.
  • Submitted first step of Vacuum Platform as an EGI community platform. Slot at EGI Operations MB this week.
  • Next Vac release (00.21) with new MJF ready for release.

Monday 8 Feb

  • Cloud Init ATLAS VMs successfully running production jobs at Manchester. Looking at logging and VM lifetime.


Accounting - UK Grid Metrics HEPSPEC06 Atlas Dashboard HS06

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

Tuesday 23rd February

  • Tom has converted (most of) the DIRAC tutorial on job submission to work with the GridPP DIRAC service. You can find the guide here.


Tuesday 9th February

  • Guidelines for using the DIRAC command line tools and the DIRAC File Catalog metadata functionality to the UserGuide.

Tuesday 12th January

  • The VOID cards (and hence the Yaim records) for CDF, PLANCK, SUPERBVO, LSST, MAGIC and ENMR have changed a bit. Sites that support any of these may want to have a look. See the GridPP approved VOs page.

General note

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

Interoperation - EGI ops agendas

Monday 8th January


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

Tuesday 16th February

  • Team membership discussed at yesterday's PMB. We will need to look to the larger GridPP sites for more support.


Tuesday 26th January

  • On Friday, one of the message brokers was in downtime and due to a bug, nagios probes were not failing over to the working one.
  • There was another issue which prevented applying a workaround in the gridppnagios server.
  • A new rota is being compiled.

Monday 11th January

  • There was a problem with the dashboard during the week, where alarms wouldn't clear even though they had cleared in the nagios. The portal people are aware of this.
  • The current alarms in Manchester (vomsserver) are thought to be fixed - the dashboard just hasn't caught up.


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 1st March

Tuesday 23rd February

  • "Critical" risk glibc remote code execution SVG-CVE-2015-7547
  • IGTF has released a regular update to the trust anchor repository (1.72) - for distribution ON OR AFTER February 29th

Tuesday 16th February

  • Vulnerabilities CVE-2015-7181/2/3 in nss, nss-util, nspr libraries subject of EGI-SVG Advisory on 11-Nov-2015 rated as HIGH risk are still showing in EGI Pakiti monitoring at a number of UK sites. Please check and update as appropriate or let IanN know if this is a monitoring error.

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 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.

Tuesday 6th October

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.


Tickets

Monday 7th March 2016, 14.30 GMT

28 Open UK Tickets this month.

NGI
119995 (7/3)
In some kind of clean up operation 5 old NGS sites that are uncertified have been identified for the "chopping block". Assigned (7/3)

ATLAS CONSISTENCY CHECKING SCRIPTS
SUSSEX 117894 On Hold (25/1)
OXFORD 117892 On Hold (12/1)
SHEFFIELD 117886 On Hold (29/1)
MANCHESTER 117885 On Hold (10/1)
RHUL 117881 On Hold (1/2)
QMUL 117880 Waiting for reply (25/2)

SUSSEX
119383 (5/2)
Low availability ticket - site recovering. On Hold (25/2)

118289 (10/12/15)
gridpp pilots, grounded after Matt RB left. Daniela has reiterated the need for this (as banning the site for the gridpp VO will ban it for snoplus too). On Hold (3/3)

118337 (14/12/15)
Sno+ having problems with the Sussex SE. The Sussex SE has been replaced, which will require some work with the Sno+ LFC (or aliasing magic). On Hold (15/2)

RALPP
118628 (5/1)
Getting LZ pilots working at RALPP. After trying out a patched version of ARC on a test CE there still appears to be a few problems with submission- no update for a few weeks though. In progress (15/2)

120006 (7/3)
A freshly squeezed ROD ticket. In progress (7/3) Update - dcache ws restarted just in case, but not sure what's going wrong. Nagios error messages aren't helpful.

BRISTOL
119930 (3/3)
A CMS user having trouble getting a file - it appears GFAL worked where xrdcp didn't. I suspect this ticket can be closed, the user seemed happy (and very polite!). Assigned (can be closed) (4/3) Update - solved

BIRMINGHAM
118155 (4/12/15)
Biomed problems with the Birmingham SE, ending with them greenlighting the removal of all their dark data (which I believe is all the biomed data still left on the SE). Matt's started the purge. In progress (7/7)

GLASGOW
118052 (30/11/15)
HTTP TF ticket - things seem to be intermittently working, Georgios spotted some interesting issues - but at least right now the SE looks all green. In progress (16/2)

117706 (19/11/15)
A pilot ticket, this one pheno-centric. Waiting on some infrastructure work at Glasgow. On hold (15/1)

ECDF
120004 (7/3)
A ROD ticket to the ARCHER facing ARC CE. Andy knows this will be a problem child, and has asked if there's a way to pull it from the ROD monitoring in a way that will still allow it to look in-production to ATLAS? Waiting for reply (7/3)

SHEFFIELD
118764 (12/1)
HTTP TF ticket. Things look a little odd on the probe page, but there's a fair amount of green. Any news? In progress (25/1)

114460 (18/6/15)
Pilot ticket - Elena rolled out the pilots but things didn't seem to work as intended. Any luck with this last week? In progress (29/2)

LIVERPOOL
119983 (4/3)
Some hardware (RAID) faults on a few pool nodes having been causing problems for some atlas users, but the Liver-lads are fighting the good fight. In progress (7/3) Update - solved. But I personally would like to hear about what hardware was failing in the Storage meeting.

RHUL
119795 (28/2)
Atlas transfer error ticket - fallout from the files lost during RHUL's draining troubles. Being declared lost. In progress (28/2) Update - spawned a ticket to track the cleanup: 120009

119509 (12/2)
Sno+ jobs are occasionally failing at RHUL with what looks to be premature sandbox cleanup problems. Govind is back in the saddle, and asked that some jobs be sent his way for testing. In progress (3/3)

QMUL
119013 (21/1)
CMS enabling QM and Glasgow as T3s - although the buck seems to have stopped at QM. After a lot of work it looks like we're waiting on the production team to greenlight the two sites. We might want to chase them up sooner rather then later. Waiting for reply (29/2).

IMPERIAL
119617 (19/2)
The CMS multicore adventure at Imperial. The jobs have run, so that looks good - CMS have asked if there is any form of reservation at the site, to which Simon replied with a resonating "kind of". Waiting for reply (7/3)

100IT
116358 (22/9/15)
Ongoing problems with missing images - work is still continuing this, but I won't go into it. In progress (2/3)

TIER 1
116864 (12/10/15)
CMS AAA test problems. CMS report that things seem to look better this week (EU redirector open and read tests are OK), and wonder if anything has changed? Has it? In progress (23/2) Update - Andrew L reports nothing changed. Maybe it was the nice Grid Pixies? We don't see them very often!

117683 (18/11/15)
CASTOR not publishing GLUE2. Jens reports that there's not been slow progress due to lack of time and ongoing CASTOR upgrade work, but slow progress is better then no progress! In progress (17/2)


Tools - MyEGI Nagios

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.


Tuesday 6 Oct 2015

Moved Gridppnagios instance back to Oxford from Lancaster. It was kind of double whammy as both sites went down together. Fortunately Oxford site was partially working so we managed to start SAM Nagios at Oxford. Sam tests were unavailable for few hours but no affect on egi availibilty/reliability. Sites can have a look at https://mon.egi.eu/myegi/ss/ for a/r status.

Tuesday 29 Sep 2015

Following an air-conditioning problem at machine room in Oxford Tier-2 site on 26 September, gridppnagios(OX) was shut down and gridppnagios(Lancs) became active instance. Oxford site is in downtime until 1st Oct and it may be extended depending on the situation. VO-Nagios was also unavailable for two days but we have started it yesterday as it is running on a VM. VO-nagios is using oxford SE for replication test so it is failing those tests. I am looking to change to some other SE.

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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