RAL Tier1 Operations Report for 28th February 2018
| Review of Issues during the week 28th February 2018 to 7th March 2018
|
- The Castor intervention scheduled for last Thursday (1st March) was cancelled owing to staff availability in the poor weather. (It was to apply Oracle patches to the database systems behind Castor). It is being re-scheduled possibly towards the end of March.
- As planned the Echo gateways were dual stacked – so providing IPv6 access – last Tuesday (27th Feb). This change itself went well – however, it revealed problems with transfers to/from Echo via our FTS service. One issue was identified – the load balancers in front of the FTS system were not dual stacked. This was fixed quickly but the problem persists. Some VOs are making use of other FTS servers as a workaround. (LHCb seem to be the only one using our FTS server significantly at the moment).
| 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.
- After the Echo Gateway Dual Stack upgrade RAL FTS is still broken. Currently CERN FTS is being used as a stop-gap solution. This issues is still on-going at time of writing.
| Resolved Castor Disk Server Issues
|
- gdss776 (d1t0) - Back in production (RO)
- gdss762 (d1t0) - Back in production (RO)
| Ongoing Castor Disk Server Issues
|
| Limits on concurrent batch system jobs.
|
| Notable Changes made since the last meeting.
|
| Entries in GOC DB starting since the last report.
|
| Downtime ID
|
Hosts
|
Start time
|
End time
|
Severity
|
Description
|
| 24947
|
srm-biomed.gridpp.rl.ac.uk (SRM),srm-dteam.gridpp.rl.ac.uk (SRM), srm-cms.gridpp.rl.ac.uk (SRM),srm-atlas.gridpp.rl.ac.uk (SRM),srm-lhcb.gridpp.rl.ac.uk (SRM), srm-minos.gridpp.rl.ac.uk (SRM), srm-alice.gridpp.rl.ac.uk (SRM), srm-ilc.gridpp.rl.ac.uk (SRM), srm-mice.gridpp.rl.ac.uk (SRM), srm-t2k.gridpp.rl.ac.uk (SRM),srm-preprod.gridpp.rl.ac.uk (SRM), srm-cert.gridpp.rl.ac.uk (SRM), srm-na62.gridpp.rl.ac.uk (SRM), srm-snoplus.gridpp.rl.ac.uk (SRM), srm-lhcb.gridpp.rl.ac.uk (SRM.nearline), srm-cms-disk.gridpp.rl.ac.uk (SRM), srm-pheno.gridpp.rl.ac.uk (SRM), srm-solid.gridpp.rl.ac.uk (SRM)
|
01/03/2018 11:00
|
01/03/2018 17:00
|
SCHEDULED OUTAGE
|
Patching Castor Neptune and Pluto Primary Environments (GI+DB PSU + OJVM PSU OCT 2017)
|
| Advanced warning for other interventions
|
| The following items are being discussed and are still to be formally scheduled and announced.
|
Listing by category:
- Echo
- Applying minor CEPH update to fix the "backfill" bug. Increase number of placement groups and add more capacity.
- 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).
- 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
|
23/02/2018
|
Local Batch System
|
Killed pilots at RAL
|
WLCG
|
| 133619
|
cms
|
in progress
|
top priority
|
21/02/2018
|
27/02/2018
|
CMS_Central Workflows
|
T1_UK_RAL Unmerged files missing
|
WLCG
|
| 133717
|
cms
|
in progress
|
very urgent
|
27/02/2018
|
27/02/2018
|
CMS_Data Transfers
|
RAL FTS3 Service: Significant Drop in Transfer Efficiency
|
WLCG
|
| 133719
|
atlas
|
in progress
|
urgent
|
27/02/2018
|
27/02/2018
|
File Transfer
|
Transfers to RAL-LCG2-ECHO failing
|
WLCG
|
| GGUS Tickets Closed Last week
|
| Day
|
ALICE
|
ATLAS
|
ATLAS-ECHO
|
CMS
|
LHCb
|
OPS
|
Comment
|
| 2018-02-22
|
100
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-02-23
|
100
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-02-24
|
100
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-02-25
|
100
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-02-26
|
100
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-02-27
|
100
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-02-28
|
100
|
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
|
| 2018/02/21 |
95 |
99 |
|
| 2018/02/22 |
98 |
99 |
|
| 2018/02/23 |
97 |
99 |
|
| 2018/02/24 |
100 |
99 |
|
| 2018/02/25 |
96 |
99 |
|
| 2018/02/26 |
100 |
100 |
|
| 2018/02/27 |
95 |
100 |
|
