RAL Tier1 Operations Report for 14th February 2018
Review of Issues during the week 7th February 2018 January 2018 to 14th February 2018
|
- We had an incident with our disk servers that deal with tape recalls/migrations on our Gen instance. A network misconfiguration was introduced after they had been physically move to a new rack location last Thursday. As a result, tape transfers were not running over the weekend, with this issue being resolved on Monday morning. We are holding a post-mortem review on this incident with the view of improving the relevant processes and to ensure we reduce the risk of this problem happening again.
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
|
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.
|
- No downtime scheduled in the GOCDB between 2018-02-07 and 2018-02-14
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
|
133399
|
atlas
|
in progress
|
less urgent
|
09/02/2018
|
12/02/2018
|
File Transfer
|
Transfers to RAL-LCG2-ECHO fail with "Address already in use"
|
WLCG
|
133421
|
snoplus.snolab.ca
|
in progress
|
urgent
|
12/02/2018
|
12/02/2018
|
File Transfer
|
Failed Transfers since Friday 10:00
|
EGI
|
GGUS Tickets Closed Last week
|
Request id
|
Affected vo
|
Status
|
Priority
|
Date of creation
|
Last update
|
Type of problem
|
Subject
|
Scope
|
132802
|
cms
|
closed
|
urgent
|
11/01/2018
|
09/02/2018
|
CMS_AAA WAN Access
|
Low HC xrootd success rates at T1_UK_RAL
|
WLCG
|
132935
|
atlas
|
closed
|
less urgent
|
18/01/2018
|
07/02/2018
|
Storage Systems
|
UK RAL-LCG2: deletion errors
|
WLCG
|
133092
|
atlas
|
closed
|
top priority
|
29/01/2018
|
12/02/2018
|
Other
|
RAL FTS server in troubles
|
WLCG
|
133425
|
ops
|
verified
|
less urgent
|
12/02/2018
|
13/02/2018
|
Operations
|
[Rod Dashboard] Issue detected : org.nordugrid.ARC-CE-sw-csh-ops@arc-ce02.gridpp.rl.ac.uk
|
EGI
|
Day
|
ALICE
|
ATLAS
|
ATLAS-ECHO
|
CMS
|
LHCb
|
OPS
|
Comment
|
2018-02-07
|
100
|
100
|
100
|
100
|
100
|
100
|
|
2018-02-08
|
100
|
100
|
100
|
100
|
100
|
100
|
|
2018-02-09
|
100
|
100
|
100
|
100
|
100
|
100
|
|
2018-02-10
|
91
|
100
|
100
|
100
|
100
|
100
|
|
2018-02-11
|
99
|
100
|
100
|
100
|
100
|
100
|
|
2018-02-12
|
79
|
98
|
100
|
100
|
100
|
100
|
|
2018-02-13
|
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
|
2018/02/07 |
100 |
100 |
|
2018/02/08 |
98 |
100 |
|
2018/02/09 |
100 |
100 |
|
2018/02/10 |
90 |
100 |
|
2018/02/11 |
100 |
100 |
|
2018/02/12 |
94 |
100 |
|
2018/02/13 |
96 |
100 |
|
- 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.