RAL Tier1 Operations Report for 24th January 2018
| Review of Issues during the week 18th January 2018 to 24th January 2018
|
| Current operational status and issues
|
- Ongoing security patching.
| Resolved Castor Disk Server Issues
|
- gdss736 (lhcbDst - D1T0) – rebuilt and back in production (RO)
- gdss776 (lhcbDst - D1T0) - Failed Wednesday afternoon (17th). Returned to service on Friday.)
| Ongoing Castor Disk Server Issues
|
- gdss717 (CMSTape - D0T1) – multiple drive failure
| Limits on concurrent batch system jobs.
|
| Notable Changes made since the last meeting.
|
- Security patching done or underway.
- The WMS service has been declared as not in production in the GOC DB.
- Updating Echo CEPH to the "Luminous" version underway. The service will continue to operate during this intervention.
| Entries in GOC DB starting since the last report.
|
| Service
|
Scheduled?
|
Outage/At Risk
|
Start
|
End
|
Duration
|
Reason
|
| srm-alice.gridpp.rl.ac.uk, srm-atlas.gridpp.rl.ac.uk, srm-cms.gridpp.rl.ac.uk, srm-lhcb.gridpp.rl.ac.uk, srm-mice.gridpp.rl.ac.uk,
|
UNSCHEDULED
|
WARNING
|
24/01/2018 22:00
|
25/01/2018 10:03
|
12 hours and 3 minutes
|
We have a problem with our tape library controller and cannot mount tapes. Writes to tape will succeed in that they will be stored on the disk buffers in front of the tape system. Recalls from tape will fail (unless the file is already on the disk buffer). Access to disk-only storage is unaffected.
|
| srm-atlas.gridpp.rl.ac.uk,
|
UNSCHEDULED
|
OUTAGE
|
23/01/2018 15:45
|
24/01/2018 14:00
|
22 hours and 15 minutes
|
emergency downtime of Castor Atlas while rebuilding some database tables
|
| 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:
- Update to next CEPH version ("Luminous"). Ongoing.
Listing by category:
- Castor:
- Update systems to use SL7 and configured by Quattor/Aquilon. (Tape servers done)
- Move to generic Castor headnodes.
- Echo:
- Update to next CEPH version ("Luminous"). Ongoing.
- 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).
- 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
|
| 117683
|
none
|
on hold
|
less urgent
|
18/11/2015
|
03/01/2018
|
Information System
|
CASTOR at RAL not publishing GLUE 2
|
| 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
|
| 127597
|
cms
|
on hold
|
urgent
|
07/04/2017
|
29/01/2018
|
File Transfer
|
Check networking and xrootd RAL-CERN performance
|
| 132589
|
lhcb
|
in progress
|
very urgent
|
21/12/2017
|
30/01/2018
|
Local Batch System
|
Killed pilots at RAL
|
| 133139
|
ops
|
in progress
|
less urgent
|
30/01/2018
|
30/01/2018
|
Operations
|
[Rod Dashboard] Issue detected : org.nordugrid.ARC-CE-sw-csh-ops@arc-ce01.gridpp.rl.ac.uk
|
| Day |
OPS |
Alice |
Atlas |
CMS |
LHCb |
Atlas Echo |
Comment
|
| 17/01/18 |
87.15 |
100 |
100 |
100 |
100 |
100 |
|
| 18/01/18 |
100 |
100 |
100 |
100 |
98 |
100 |
|
| 19/01/18 |
100 |
100 |
100 |
100 |
100 |
100 |
|
| 20/01/18 |
100 |
92 |
100 |
100 |
100 |
100 |
|
| 21/01/18 |
100 |
0 |
100 |
100 |
100 |
100 |
|
| 22/01/18 |
100 |
49 |
65 |
100 |
89 |
100 |
|
| 23/01/18 |
100 |
94 |
0 |
100 |
94 |
100 |
|
Key: Atlas HC = Atlas HammerCloud (Queue ANALY_RAL_UCORE, Template 841); CMS HC = CMS HammerCloud
| Day |
Atlas HC |
CMS HC |
Comment
|
| 17/01/18 |
92 |
100 |
|
| 18/01/18 |
100 |
100 |
|
| 19/01/18 |
100 |
99 |
|
| 20/01/18 |
100 |
99 |
|
| 21/01/18 |
100 |
100 |
|
| 22/01/18 |
59 |
100 |
|
| 23/01/18 |
100 |
99 |
|
- There was a discussion around performance of the Tier1 when accessing off-site data from the worker nodes. This data path goes through the site firewall which is causing some restrictions.
