Operations Bulletin Latest

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Bulletin archive

Week commencing 23rd November 2015
Task Areas
General updates

Tuesday 24th November

  • Some ATLAS sites (as of Monday) still had PRODDISK listed in the BDII.
  • ATLAS DPM 'dump' - a list of files?
  • An agenda for December's GDB is developing - see here. Tier-2 representation has wained recently. Perhaps someone attending the DPM meeting could attend the GDB too?
  • Andrew's BDII patch used in relation to LSST job breakdown issues.
  • Installing a UI on SL6.

Tuesday 17th November

Tuesday 10th November

  • There was a WLCG GDB last week: Agenda. Minutes.
  • ATLAS is going to move the brokering to use maxrss value rather than maxrss+maxswap (called maxmemory in the ATLAS panda queues). Reminder notes.
  • There is an EGI meeting in Bari this week. The OMB agenda/slides can be seen here.
  • An update from John Gordon on the CPU efficiency accounting discussion of last week."Stuart has the database merge under way now. We had hoped it would be done by the end of October but it isn’t complete yet. When done and we send an integrated dataset to the portal they will put the current dev view in the production portal alongside the current one. They are currently developing a major rewrite of the portal and don’t want to mess about with it too much."
  • J Perkin: Weird user error when reading LFC. Led to a reminder that the CA team are currently best efforts - please be patient.
  • J Hill: ATLAS consistency checks at Tier2s requires sites to upload stiorage dumps - please can we have a clear statement of what parameters ATLAS wants us to use for these dumps?
  • Simon G: Asked about Tier3 access to Tier2 storage.
  • LCG-ROLLOUT: TOP BDII issues with CentOS 6.7 (openldap-servers-2.4.40-5.el6.x86_64). It basically breaks but is being followed up with RH.
  • For those interested in the ARGUS working group meeting last week please see their summary.
  • There was a GridPP Technical Meeting last Friday: Agenda.
WLCG Operations Coordination - AgendasWiki Page

Tuesday 24th November

  • There was a WLCG ops coordination meeting last Thursday: Agenda | Minutes.
  • Baselines: dCache 2.6.x decommissioned deadline was end of September.
  • News: Critical Vulnerability broadcast by SVG on Friday 06 affecting NSS.
  • T0 news: IPv6 enabled in MyProxy and VOMS for testing purposes, in dual-stack mode (IPv4 and IPv6). LSF 9 upgrade of the WNs is in QA testing.
  • ALICE: Good activity. Preparations for heavy ion reco jobs. At CERN ALICE jobs can request 2 cores and hence have twice the memory but with an impact on efficiency.
  • ATLAS: new record in parallel running slots: 250k. Some mc15b campaign jobs were requesting an excessive amount of conditions data. Deletion agents: deletion agents were switched off for a few days for operational reasons but once on again struggled to keep up.PRODDISK has been decommissioned on all the Tier2s.
  • CMS: High loads:~120k parallel jobs. Multi-billion events MC RECO campaign ahead.
  • LHCb: Very high activity. Several days of failures at SARA when srm was overloaded by a local user. Working on interface to HTCondor-CE.
  • glexec TF: NTR
  • HTTP TF: [ https://indico.cern.ch/event/459419 Meeting on 5th November]. Have a working Nagios probe, endpoint lists from the experiments, regular monitoring of the infrastructure (see links on agenda) and a GGUS support unit.
  • IS evolution: The first draft of the Future Use Cases document is now available for comments. Deadline to provide input is on 24th November. There was a TF meeting on 12th November. Looking at options for publishing a subset of the current GLUE schema that is useful for WLCG in JSON/HTTPS.
  • IPv6: NTR
  • MW readiness: Tests reported for EOS, DPM, dCache, BDII, MW readiness app. Next meeting 2nd December.
  • Multicore: NTR
  • Network and transfer metrics: perfSONAR collector, datastore, publisher and dashboard in production (stable operations). ALL sites are encouraged to enable auto-updates for perfSONAR. Pilots: ATLAS Panda, perfSONAR stream now in ATLAS Network Analytics. LHCb DIRAC bridge is now functional.
  • RFC proxies: NTR
  • Squid monitoring and proxy discovery: NTR.
  • AOB: Andrew McNab will take over the coordination of the Machine/Job Features task force.

Tuesday 17th November

Tuesday 10th November

  • There was a WLCG ops coordination meeting last Thursday: Minutes. (Alessandra chaired and might be able to talk over the main items at our ops meeting).
Tier-1 - Status Page

Tuesday 24th November A reminder that there is a weekly Tier-1 experiment liaison meeting. Notes from the last meeting here

  • We are investigating why LHCB batch jobs sometimes fail to write results back to Castor (and the sometimes fail to write remotely as well).
  • We are continuing with some detailed network changes needed to remove our old core switch from the network. On Wednesday morning (18th) the link to the Atlas building (R26) was successfully moved. (There was a site 'warning' in the GOC DB for this.)
  • A week or so ago we saw some Atlas Hammercloud tests failing (loss of heartbeat) - although the problem seems to have gone away now. This is not understood yet.
  • We have found a problem on some disk servers of one particular batch that have been updated to SL6. The servers can run slowly and individual commands hang (until a timeout) while making name look-ups. So far a total of three servers have been affected spread over a couple of weeks. We can easily fix the problem but do not yet know why it occurs.
  • The tenders for the next round of Disk and CPU purchases are now out.
  • All of the Tier1's Castor tape servers are now running Castor version 2.1.15. (The rest of Castor is still at 2.1.14 - with the aim of upgrading early-ish in 2016).
  • We have seen some saturation of the 'bypass' link that transfers data to non-Tier1 sites a week ago. This is currently a 10Gbit link which was very busy for about a three-day period. The amount of traffic using the OPN link has also been rising.
Storage & Data Management - Agendas/Minutes

Wednesday 28 Oct

  • Summary of "UK T0" workshop - GridPP well represented
  • Sites should not upgrade to DPM 1.8.10 just yet

Wednesday 02 Sep

  • Catch up with MICE
  • How to do transfers of lots of files with FTS3 without the proxy timing out (in particularly if you need it vomsified)

Wednesday 12 Aug

  • sort of housekeeping: data cleanups, catalogue synchronisation - in particular namespace dumps for VOs
  • GridPP storage/data at future events; GridPP35 and Hepix and Cloud data events

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?

Tier-2 Evolution - GridPP JIRA

Tuesday 24 Nov

  • Cloud Init version of (old) GridPP DIRAC VMs
  • Cloud Init support in Vac 0.20pre
  • Progress on VMs for new GridPP DIRAC service: multi-VO config currently preventing matching. (GRIDPP-9)

Tuesday 17 Nov

  • New depo.gridpp.ac.uk service for uploading files to via HTTPS
  • ATLAS VMs now upload log files to depo.gridpp.ac.uk for debugging (GRIDPP-24)

Monday 9 Nov

  • Vac 0.19.0 released last week: new VacQuery protocol
  • Prototyping Vcycle(/Vac) GLUE2 publishing: talk at WLCG InfoSys Evolution TF on Thursday
  • Please now use https://repo.gridpp.ac.uk/vacproject/ URLs for user_data and cernvm3.iso files (in preparation for move to new www.gridpp.ac.uk website.)
  • See Laurence's GDB talk "Helix Nebula Price Enquiry Results" for more use of Vcycle

Tuesday 3 Nov

  • LHCb prototype of GOCDB pointers to resource BDII done
  • T2C tests at Oxford ongoing

Tuesday 20 Oct

  • LHCb multipilot VMs now in production
  • Support for APEL-Sync records in Vac, but need to co-ordinate with APEL team to validate it. This is to allow pure-VM sites like UCL to pass APEL SAM tests (GRIDPP-10)
  • Last GridPP Technical Meeting decided to test disk-less operation at Oxford for CMS (GRIDPP-20) and LHCb (GRIDPP-21).

Tuesday 6 Oct

  • UCL Vac site now running LHCb test of two payloads per dual processor VM. Total of dual processor VMs at UCL now 120.

Accounting - UK Grid Metrics HEPSPEC06 Atlas Dashboard HS06

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 24th November Steve J: problems with voms server at fnal, voms.fnal.gov, resolved. Approved VOs document updated with newest records for those VOs affected, CDF, DZERO, LSST. Also, note changes to CA_DN for PLANCK and CDF. https://www.gridpp.ac.uk/wiki/GridPP_approved_VOs

Friday 6th Nov, 2015

SteveJ: Advice to admins published about a common GSS error, globus_gsi_callback_module: Could not verify credential etc.


Tuesday 20th October, 2015

Approved VOs document updated with temporary section for LZ

Tuesday 29nd September Steve J: problems with voms server at fnal, voms.fnal.gov, have been detected; I will resolve them soon and may issue an update to Approved VOs, alerting sites with TB_SUPPORT should that occur. Approved VOs potentially affected are CDF, DZERO, LSST. Please do not act act yet.

Tuesday 22nd September

  • Steve J is going to undertake some GridPP/documentation usability testing.

Tuesday 18th August

  • Lydia's document - Setup a system to do data archiving using FTS3

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!

General note

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

Interoperation - EGI ops agendas

Tuesday 10th November

Meeting yesterday was cancelled in favour of OMB; next meeting scheduled for 14/12.

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 23rd November

  • Still seeing the alarms for systems at QMUL and RHUL that are not in production.
  • Closed some tickets for the rolling availabilities. Confused by the rolling availability plots. It seems the "rolling average" period was cut back to 20 days.

Tuesday 3rd November

  • The long-standing UCL availability alarm went green yesterday on 29th October. We are not sure why!
  • Quite a lot of activity on the dashboard this week, but only one or two new tickets.
  • Tickets: Five for availability / reliability: Sussex, Sheffield, Liverpool, Lancaster and UCL. Two for GLUE2 validation: Liverpool and QMUL. One for the CEs at QMU

Tuesday 20th October

Lots of bits here and there, but no big pattern. Tickets about CE and storage problems open at several sites. QMUL notable as going on for a while, probably with some kind of configuration problem they're not identifying.

Rollout Status WLCG Baseline

Tuesday 15th September

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.


Security - Incident Procedure Policies Rota

Tuesday 24th November

  • Call on NGIs to participate in "Security Threat Risk Assessment - with Cloud Focus" work.
  • Check Pakiti for CVE-2015-7183 issues.

Tuesday 17th November

  • Advisory-SVG-2015-CVE-2015-7183 issued 06/11/2015: a few UK sites show as unpatched in EGI monitoring. WNs, as tested by the monitoring, may be less vulnerable than affected middleware services but they could be taken as an indication of general site readiness and sites are encouraged to check their status.

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 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.


Monday 23rd November 2015, 15.00 GMT
There were just 18 Open UK Tickets - now we're up to 37...

ATLASPRODDISK Deletion (20/11)
117740 (RALPP)
117739 (Sussex)
117737 (Birmingham)

Brian (as an agent of atlas) has asked sites to delete the data from proddisk and remove the tokens. Chris has sorted it already for RALPP and the ticket has mutated to a generic atlas cleanout. No news on the other two.

In another round of Pilot wrangling by Daniela sites have been asked to implement pilots for the Pheno VO (or where they are enabled find out why they're not working!): 117706 (GLASGOW)
117710 (Brunel)
117711 (RALPP)
117723 (QMUL)

For completeness the older pilot tickets:
114460 (Sheffield)
116866 (TIER 1) The Tier 1 is at the "debugging" stage, no news from Sheffield though.

Atlas have ticketed everyone and their grandmother asking to implement the automated storage consistency check stuff. Which I think is a little unfair as I'm unconvinced of the maturity of the tools after spending a day with them last week.

I've updated Lancaster's ticket to see if we've set this up right during our mucking about last week: 117883
Update- Atlas have replied to say things are looking good at Lancaster so we just need a few more tweaks (such as using Alessandra's updated and polished version of the dpm_dump.py script and creating dumps that are only a day old and we're done.

Brunel have been asked by CMS to upgrade their DPM to 1.8.10 in 117922 - however Raul reports that things aren't working all that well, suggesting CMS need to have a natter with the DPM devs.

Tools - MyEGI Nagios

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.

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


GridPP ops meeting - Agendas Actions Core Tasks


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


NGI UK - Homepage CA


UK ATLAS - Shifter view News & Links

Atlas S&C week 2-6 Feb 2015


• 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 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


Main page

DDM Accounting




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





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To note

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