Editing Tier1 Operations Report 2018-04-30
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RAL Tier1 Operations Report for 30t April 2018
| Review of Issues during the week 23rd April to the 30th April 2018.
|
- The proposed emergency chassis intervention was brought forward (23/5/18 - 13:00), when the chassis began to intermittently reboot itself. This intervention was completed successfully and without further incident.
- The scheduled firewall replacement (25/4/18), appeared to be completed successfully. However, during the afternoon the connection between the Tier1 network and the RAL core was failing intermittently. The problem seemed to get worse as the afternoon progressed. Due to disruptions to connectivity both on and off site, caused (we think) by running on the new secondary firewall, we flipped the Master-Slave router pair so that the Master was running on the standby side. The change occurred at approximately 17:00 on the Wednesday and normal service was subsequently restored. There is currently an ongoing investigation as to why the firewalls did not fail-over correctly. There is an "at risk" scheduled outage for the 2nd May 2018 when Networking/DS will be performing another firewall switch-over to ensure that this issue has been resolved.
| Current operational status and issues
|
| Resolved Castor Disk Server Issues
|
| Ongoing Castor Disk Server Issues
|
- gdss737 (lhcbDst- D1T0) - Currently out of production awaiting investigation by the CASTOR and Fabric teams.
| 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
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Severity
|
Description
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| 25263
|
All RAL
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02/05/2018 07:30
|
02/05/2018 08:30
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SCHEDULED WARNING
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Firewall fail-over test. Within this time window there is the expectation of a break in connectivity while connections are moved between the two firewalls.
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| 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 the report)
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| 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
|
28/03/2018
|
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
|
16/04/2018
|
File Transfer
|
Check networking and xrootd RAL-CERN performance
|
EGI
|
| 133992
|
atlas
|
in progress
|
less urgent
|
12/03/2018
|
19/04/2018
|
File Transfer
|
RAL-LCG2-ECHO: No such file or directory
|
EGI
|
| 134468
|
cms
|
waiting for reply
|
top priority
|
09/04/2018
|
24/04/2018
|
CMS_AAA WAN Access
|
Xrootd redirector not seeing some files in ECHO
|
WLCG
|
| 134494
|
atlas
|
waiting for reply
|
urgent
|
11/04/2018
|
29/04/2018
|
Storage Systems
|
json space reporting not updated
|
WLCG
|
| 134619
|
cms
|
in progress
|
urgent
|
19/04/2018
|
26/04/2018
|
CMS_SAM tests
|
Problems reading data from ECHO
|
WLCG
|
| 134685
|
dteam
|
in progress
|
less urgent
|
23/04/2018
|
23/04/2018
|
Middleware
|
please upgrade perfsonar host(s) at RAL-LCG2 to CentOS7
|
EGI
|
| 134769
|
cms
|
in progress
|
urgent
|
26/04/2018
|
27/04/2018
|
CMS_Data Transfers
|
Transfers from RAL_Disk to Florida are failing
|
WLCG
|
| GGUS Tickets Closed Last week
|
| Request id
|
Affected vo
|
Status
|
Priority
|
Date of creation
|
Last update
|
Type of problem
|
Subject
|
Scope
|
| 132589
|
lhcb
|
verified
|
very urgent
|
21/12/2017
|
23/04/2018
|
Local Batch System
|
Killed pilots at RAL
|
WLCG
|
| 134136
|
atlas
|
closed
|
less urgent
|
20/03/2018
|
25/04/2018
|
File Transfer
|
RAL-LCG2: [SE][Ls][SRM_INVALID_PATH] No such file or directory
|
EGI
|
| 134342
|
cms
|
solved
|
urgent
|
29/03/2018
|
26/04/2018
|
CMS_Data Transfers
|
CERN->MSS rate test
|
WLCG
|
| 134413
|
none
|
closed
|
less urgent
|
05/04/2018
|
24/04/2018
|
VO Specific Software
|
/cvmfs/larsoft.opensciencegrid.org not mounting
|
EGI
|
| 134438
|
snoplus.snolab.ca
|
closed
|
less urgent
|
06/04/2018
|
26/04/2018
|
File Transfer
|
FTS - transfer rate success drop
|
EGI
|
| 134488
|
snoplus.snolab.ca
|
solved
|
urgent
|
10/04/2018
|
25/04/2018
|
File Transfer
|
FTS failures to RAL
|
EGI
|
| 134599
|
t2k.org
|
solved
|
less urgent
|
18/04/2018
|
24/04/2018
|
File Access
|
Unable to reach 25 files at RAL which are ONLINE AND NEARLINE
|
EGI
|
| 134627
|
cms
|
solved
|
urgent
|
19/04/2018
|
24/04/2018
|
CMS_Data Transfers
|
Transfer backlogs
|
WLCG
|
| 134703
|
cms
|
solved
|
urgent
|
23/04/2018
|
26/04/2018
|
CMS_Data Transfers
|
Transfer failing from RAL_Disk
|
WLCG
|
| 134731
|
lhcb
|
solved
|
very urgent
|
25/04/2018
|
26/04/2018
|
File Access
|
could not open connection to srm-lhcb.gridpp.rl.ac.uk:8443
|
WLCG
|
| 134737
|
cms
|
solved
|
urgent
|
25/04/2018
|
30/04/2018
|
CMS_SAM tests
|
SAM CE test failing at T1_UK_RAL
|
WLCG
|
| 134744
|
cms
|
solved
|
top priority
|
25/04/2018
|
26/04/2018
|
File Transfer
|
Zero Phedex Transfers - via RAL FTS service on certain links
|
EGI
|
| Target Availability for each site is 97.0%
|
Red <90%
|
Orange <97%
|
| Day
|
ALICE
|
ATLAS
|
ATLAS-ECHO
|
CMS
|
LHCb
|
OPS
|
Comment
|
| 2018-04-22
|
100
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-04-23
|
100
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-04-24
|
100
|
100
|
100
|
99
|
100
|
100
|
|
| 2018-04-25
|
82
|
85
|
100
|
87
|
100
|
79.5053
|
|
| 2018-04-26
|
100
|
99
|
99
|
96
|
100
|
100
|
|
| 2018-04-27
|
100
|
98
|
98
|
96
|
100
|
100
|
|
| 2018-04-28
|
98
|
100
|
100
|
100
|
100
|
100
|
|
| 2018-04-29
|
100
|
100
|
100
|
100
|
100
|
100
|
|
| Target Availability for each site is 97.0%
|
Red <90%
|
Orange <97%
|
Key: Atlas HC = Atlas HammerCloud (Queue RAL-LCG2_UCORE, Template 841); CMS HC = CMS HammerCloud
| Day |
Atlas HC |
CMS HC |
Comment
|
| 2018/04/16 |
100 |
100 |
|
| 2018/04/17 |
100 |
99 |
|
| 2018/04/18 |
97 |
95 |
|
| 2018/04/19 |
82 |
99 |
|
| 2018/04/20 |
100 |
100 |
|
| 2018/04/21 |
100 |
99 |
|
| 2018/04/22 |
100 |
99 |
|
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