| General updates
Tuesday 15th March
- Critical bug in DPM 1.18.10 - new drain commands causing data loss
- The DPM team strongly recommends disabling https on the disk servers.
- GridPP36 registration closes on 23rd March.
- EGI now has a timeline for deployment of the ARGO central monitoring system.
- CHEP 2016 abstract submission (via Indico) will open soon - the target is March 23, 2016.
- Winnie raised a question last week about EGI Pakiti. Is any further discussion needed/useful?
- Brian asked on DIRAC-USERS: Do we need to create different groups within voms for different sites?
- The final reliability & availability reports for January, with corrections applied, are now available.
- DCache Workshop, April, 11-12, 2016, Barcelona.
Tuesday 8th March
| Tier-1 - Status Page
Tuesday 15th March
A reminder that there is a weekly Tier-1 experiment liaison meeting. Notes from the last meeting here
- There was an At Risk on the whole Tier1 yesterday (Monday 14th March) for a network reconfiguration followed by the firmware update of a pair of network switches. No service problems encountered.
- We had some problems with packet loss across our network a week ago. It was traced to a component in OpenStack which is being used to develop new cloud infrastructure.
- Castor 2.1.15 update is waiting. This is pending resolution of a problem around memory usage by the Oracle database behind Castor.
- "GEN Scratch" storage in Castor will be decommissioned.
- Catalin is organizing the CernVM Users Workshop at RAL on the 6-8 June 2016.
- Patching ongoing.
| Storage & Data Management - Agendas/Minutes
Monday 14th March
- Topics that we would want covered at the next DPM Collaboration Meeting
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
Tuesday 15 Mar
- Vac 00.21 deployed at some level at all 5 production Vac sites
- 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.
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.
See the worst KeyDocs list for documents needing review now and the names of the responsible people.
| On-duty - Dashboard ROD rota
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.
Tuesday 16th February
- Team membership discussed at yesterday's PMB. We will need to look to the larger GridPP sites for more support.
| 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.
Monday 14th March 2015, 14.00 GMT
27 Open UK Tickets.
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...
| 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
- 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.