RAL Tier1 Operations Report for 16th July 2018
Review of Issues during the week 9th July to the 16th July 2018.
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Current operational status and issues
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* None.
Resolved Castor Disk Server Issues
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- gdss747 - Atlas - d1t0. Drive lost and not recoverable, data loss declared.
Ongoing Castor Disk Server Issues
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Limits on concurrent batch system jobs.
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Notable Changes made since the last meeting.
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- Worker nodes and CONDOR. We are now running new Docker containers running Singularity. Further changes include an update to use UMD4. This new container is currently being tested and is running on arc-ce04.
- The new Docker container image (stfc/grid-workernode-c6:2018-07-09.2 and stfc/grid-workernode-c7:2018-07-09.2), has been rolled out across the entire batch farm.
Entries in GOC DB starting since the last report.
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- No downtime scheduled in the GOCDB for next 2 weeks
Advanced warning for other interventions
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The following items are being discussed and are still to be formally scheduled and announced.
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Listing by category:
- Castor:
- Update systems to use SL7 and configured by Quattor/Aquilon. (Tape servers done)
- Move to generic Castor headnodes.
- Internal
- DNS servers will be rolled out within the Tier1 network.
- Infrastructure
- There is currently a scheduled three day period (July 24th - July 26th), where RAL Tier-1 will be undertaking server room circuit breaker testing. Although it is believed that these tests should not effect our services, such is the nature of these tests all Tier-1 production services should be considered "At Risk" during this time. All VOs are asked to give consideration with respect to possible unexpected outage to any high priority/critical jobs they may wish to run during this period.
Open
GGUS Tickets (Snapshot taken during morning of the meeting).
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Request id
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Affected vo
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Status
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Priority
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Date of creation
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Last update
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Type of problem
|
Subject
|
Scope
|
136110
|
atlas
|
in progress
|
urgent
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13/07/2018
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16/07/2018
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File Transfer
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RAL-LCG2: Transfer errors as source with "SRM_FILE_UNAVAILABLE"
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WLCG
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136104
|
ops
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in progress
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less urgent
|
13/07/2018
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13/07/2018
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Operations
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[Rod Dashboard] Issues detected at RAL-LCG2
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EGI
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136097
|
other
|
waiting for reply
|
urgent
|
13/07/2018
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16/07/2018
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Operations
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Please restart frontier-squid on RAL cvmfs stratum 1
|
EGI
|
136028
|
cms
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in progress
|
urgent
|
10/07/2018
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12/07/2018
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CMS_AAA WAN Access
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Issues reading files at T1_UK_RAL_Disk
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WLCG
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134685
|
dteam
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in progress
|
less urgent
|
23/04/2018
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09/07/2018
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Middleware
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please upgrade perfsonar host(s) at RAL-LCG2 to CentOS7
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EGI
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124876
|
ops
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reopened
|
less urgent
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07/11/2016
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28/06/2018
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Operations
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[Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk
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EGI
|
GGUS Tickets Closed Last week
|
Request id
|
Affected vo
|
Status
|
Priority
|
Date of creation
|
Last update
|
Type of problem
|
Subject
|
Scope
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136045
|
lhcb
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verified
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very urgent
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11/07/2018
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13/07/2018
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File Transfer
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Connection issue from RAL FTS?
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WLCG
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136002
|
cms
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solved
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urgent
|
09/07/2018
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09/07/2018
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CMS_Facilities
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T1_UK_RAL SE Xrootd read failure
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WLCG
|
135723
|
lhcb
|
closed
|
top priority
|
19/06/2018
|
12/07/2018
|
File Transfer
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lcgfts3 FTS server fails all transfers
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WLCG
|
135455
|
cms
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closed
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less urgent
|
31/05/2018
|
09/07/2018
|
File Transfer
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Checksum verification at RAL
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EGI
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Target Availability for each site is 97.0%
|
Red <90%
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Orange <97%
|
Day
|
Atlas
|
Atlas-Echo
|
CMS
|
LHCB
|
Alice
|
OPS
|
Comments
|
2018-07-09
|
100
|
100
|
100
|
100
|
100
|
100
|
|
2018-07-10
|
100
|
100
|
97
|
100
|
100
|
100
|
|
2018-07-11
|
100
|
100
|
100
|
100
|
100
|
100
|
|
2018-07-12
|
100
|
100
|
98
|
100
|
100
|
100
|
|
2018-07-13
|
100
|
100
|
99
|
100
|
100
|
100
|
|
2018-07-14
|
100
|
100
|
100
|
100
|
100
|
100
|
|
2018-07-15
|
100
|
100
|
100
|
92
|
100
|
100
|
|
Target Availability for each site is 97.0%
|
Red <90%
|
Orange <97%
|
Day |
Atlas HC |
CMS HC |
Comment
|
2018-07-10 |
100 |
99 |
|
2018-07-11 |
98 |
99 |
|
2018-07-12 |
97 |
99 |
|
2018-07-13 |
96 |
99 |
|
2018-07-14 |
100 |
91 |
|
2018-07-15 |
100 |
91 |
|
2018-07-16 |
- |
- |
|
Key: Atlas HC = Atlas HammerCloud (Queue RAL-LCG2_UCORE, Template 841); CMS HC = CMS HammerCloud
- GGUS ticket this morning ref xrootd - failing request were hitting the external gateway - it shouldn't.
- Lots of transfers with similar failures. All failing requests hitting xrootd servers are from CMs - None from Atlas.
- Not enough resource to handle requests.
- 1. If they talk to the internal gateway will be redirected to the external - though this is not confirmed
- 2. Mapping within the node/docker container is failing. A failing config somewhere, but TB doesn't think it's our fault as Atlas is running ok for the same config.