RAL Tier1 Operations Report for 7th February 2018
| Review of Issues during the week 31st January 2018 to 7th February 2018
|
- Atlas have moved their FTS transfers from our "test" FTS service to the Production one. This change was made (on 30th January) at our request and effectively consolidates us with a single production FTS service. However, there were problems over the weekend when disk space on the FTS servers ran out. Atlas submitted a GGUS alarm ticket on Sunday (4th Jan). The problem was resolved by the on-call team.
- We have noticed disproportionately large numbers of Alice jobs running on the batch farm – blocking out other VOs. Steps have been taken to correct this.
- Alice, CMS and LHCb VOBOXes are now dual stack IPv4/6.
- The Hyper-K VO has been enabled on the batch farm.
- We await further updates regarding an ongoing problem with one of the BMS (Building Management Systems) in the R89 machine room. This has an intermittent fault.
| Current operational status and issues
|
- The problems with data flows through the site firewall being restricted is still present. New firewall kit has be purchased and delivered, awaiting deployment.
| Resolved Castor Disk Server Issues
|
- gdss762 (atlasStripInput - D0T1) – Back in production RO
- gdss761 (LHCbDst - D1T0) - Back in production RO
| Ongoing Castor Disk Server Issues
|
| Limits on concurrent batch system jobs.
|
- CMS Multicore 550
- ALICE jobs 750. (Attempt to re-balance farm)
| Notable Changes made since the last meeting.
|
- The Upgrade of Echo to the latest CEPH release (“Luminous”) was carried out successfully during the second half of last week. This was done as a rolling update with the service available throughout.
- ALICE VOBOXes (lcgvo07 and lcgvo09) and LHCb VOBOX (lcgvo10) are now dual stack IPv4/6.
- The Hyper-K VO has been enabled on the batch farm.
- Atlas have moved their FTS transfers from our "test" FTS service to the Production one. This change was made at our request and effectively consolidates us with a single production FTS service.
| Entries in GOC DB starting since the last report.
|
| Advanced warning for other interventions
|
| The following items are being discussed and are still to be formally scheduled and announced.
|
Ongoing or Pending - but not yet formally announced:
- Move IPv6 connectivity - currently on 10Gbit links - to share the higher bandwidth (40Gbit) links used by IPv4.
Listing by category:
- Castor:
- Update systems to use SL7 and configured by Quattor/Aquilon. (Tape servers done)
- Move to generic Castor headnodes.
- Networking
- Extend the number of services on the production network with IPv6 dual stack. (Done for Perfsonar, FTS3, all squids and the CVMFS Stratum-1 servers).
- Move IPv6 connectivity - currently on 10Gbit links - to share the higher bandwidth (40Gbit) links used by IPv4.
- Replacement (upgrade) of RAL firewall.
- Internal
- DNS servers will be rolled out within the Tier1 network.
- Infrastructure
- Testing of power distribution boards in the R89 machine room is being scheduled for some time late July / Early August. The effect of this on our services is being discussed.
| Open GGUS Tickets (Snapshot during morning of meeting)
|
| Request id
|
Affected vo
|
Status
|
Priority
|
Date of creation
|
Last update
|
Type of problem
|
Subject
|
Scope
|
| 117683
|
none
|
on hold
|
less urgent
|
18/11/2015
|
03/01/2018
|
Information System
|
CASTOR at RAL not publishing GLUE 2
|
EGI
|
| 124876
|
ops
|
on hold
|
less urgent
|
07/11/2016
|
13/11/2017
|
Operations
|
[Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk
|
EGI
|
| 127597
|
cms
|
on hold
|
urgent
|
07/04/2017
|
29/01/2018
|
File Transfer
|
Check networking and xrootd RAL-CERN performance
|
EGI
|
| 132589
|
lhcb
|
in progress
|
very urgent
|
21/12/2017
|
31/01/2018
|
Local Batch System
|
Killed pilots at RAL
|
WLCG
|
| GGUS Tickets Closed Last week
|
| Request id
|
Affected vo
|
Status
|
Priority
|
Date of creation
|
Last update
|
Type of problem
|
Subject
|
Scope
|
| 111477
|
cms
|
closed
|
less urgent
|
29/01/2015
|
01/02/2018
|
CMS_Data Transfers
|
RAL Staging Test for Run2
|
WLCG
|
| 112662
|
none
|
closed
|
top priority
|
25/03/2015
|
31/01/2018
|
Other
|
This TEST ALARM has been raised for testing GGUS alarm work flow after a new GGUS release.
|
EGI
|
| 133066
|
atlas
|
verified
|
top priority
|
26/01/2018
|
02/02/2018
|
File Transfer
|
Unable to contact fts3-test.gridpp.rl.ac.uk
|
WLCG
|
| 133139
|
ops
|
verified
|
less urgent
|
30/01/2018
|
01/02/2018
|
Operations
|
[Rod Dashboard] Issue detected : org.nordugrid.ARC-CE-sw-csh-ops@arc-ce01.gridpp.rl.ac.uk
|
EGI
|
| 133154
|
ops
|
verified
|
less urgent
|
31/01/2018
|
02/02/2018
|
Operations
|
[Rod Dashboard] Issue detected : org.nordugrid.ARC-CE-sw-csh-ops@arc-ce02.gridpp.rl.ac.uk
|
EGI
|
| 133196
|
none
|
verified
|
top priority
|
31/01/2018
|
05/02/2018
|
Other
|
This TEST ALARM has been raised for testing GGUS alarm work flow after a new GGUS release.
|
WLCG
|
| 133265
|
atlas
|
solved
|
top priority
|
04/02/2018
|
04/02/2018
|
File Transfer
|
Transfers to all UK, NL, and ND sites are failing with "No space left on device"
|
WLCG
|
| Day
|
ALICE
|
ATLAS
|
CMS
|
LHCb
|
OPS
|
Comment
|
| 2018-02-01
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-02-02
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-02-03
|
100
|
100
|
98
|
100
|
100
|
|
| 2018-02-04
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-02-05
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-02-06
|
100
|
98
|
100
|
100
|
100
|
|
| 2018-02-07
|
100
|
100
|
100
|
100
|
100
|
|
Key: Atlas HC = Atlas HammerCloud (Queue RAL-LCG2_UCORE, Template 841); CMS HC = CMS HammerCloud
| Day |
Atlas HC |
CMS HC |
Comment
|
| 31/01/2018 |
98 |
98 |
|
| 1/02/2018 |
100 |
99 |
|
| 2/02/2018 |
100 |
98 |
|
| 3/02/2018 |
100 |
99 |
|
| 4/02/2018 |
100 |
98 |
|
| 5/02/2018 |
98 |
100 |
|
| 6/02/2018 |
100 |
99 |
|
- It was noted that one morning this week Echo was delivering data to teh worker nodes at around 15GBytes/sec.
- The MICE experiment is coming to an end. Future acess to MICE data was briefly discussed.
- It was noted that there are plans to connect the RAL network to JANET at 100Gbit.
