| General updates
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- Critical bug in DPM 1.18.10 - new drain commands causing data loss
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.
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| WLCG Operations Coordination - AgendasWiki Page
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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.
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| Tier-1 - Status Page
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Tuesday 15th March
A reminder that there is a weekly Tier-1 experiment liaison meeting. Notes from the last meeting here
- There will be an At Risk on the whole Tier1 while a network reconfiguration is made followed by the firmware update in a pair of network switches. Date to be announced in GOC DB.
- Castor 2.1.15 update is waiting. This is pending resolution of a problem found during testing showing slow file access.
- "GEN Scratch" storage in Castor will be decommissioned.
- Catalin is organizing the CernVM Users Workshop at RAL on the 6-8 June 2016.
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| Storage & Data Management - Agendas/Minutes
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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
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| Tier-2 Evolution - GridPP JIRA
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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.
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| Accounting - UK Grid Metrics HEPSPEC06 Atlas Dashboard HS06
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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
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| Documentation - KeyDocs
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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.
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| Monitoring - Links MyWLCG
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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
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| On-duty - Dashboard ROD rota
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Tuesday 16th February
- Team membership discussed at yesterday's PMB. We will need to look to the larger GridPP sites for more support.
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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.
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| Rollout Status WLCG Baseline
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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
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| Services - PerfSonar dashboard | GridPP VOMS
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- 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.
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| Tickets
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Monday 14th March 2015, 14.00 GMT
27 Open UK Tickets.
The Highlight(s):
The HTTP TF Tickets to DPM sites have mostly been reborn, seemingly changing tack from "http ain't working on your DPM" to "this ain't working all that well on your DPM - probably due to https".
The take home message from these tickets is:
"The DPM team strongly recommends disabling https on the disk servers. It is frequently a source of problems and has a significant performance penalty. Access is still authenticated and authorised on the head node which passes a token to the disk, so the setup is secure."
An example of one of these tickets (Manchester, by virtue of being the most recently updated): 120139
And um, that's it for interesting tickets AFAICS (over 50% of our tickets fall under atlas consistency checks, http TF tickets or rolling out pilot accounts). Let me know if I'm missing some excitement somewhere.
Looking at the other VO nagios... nope, that looks fine too (at time of writing). How peaceful...
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| Tools - MyEGI Nagios
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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.
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| VOs - GridPP VOMS VO IDs Approved VO table
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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.
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| Site Updates
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Tuesday 23rd February
ALICE:
All okay.
RHUL 89%:89%
Lancaster 0%:0%
RALPP: 80%::80%
RALPP: 77%:77%
- 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.
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