Difference between revisions of "Tier1 Operations Report 2018-12-03"

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{| width="100%" cellspacing="0" cellpadding="0" style="background-color: #ffffff; border: 1px solid silver; border-collapse: collapse; width: 100%; margin: 0 0 1em 0;"
 
{| width="100%" cellspacing="0" cellpadding="0" style="background-color: #ffffff; border: 1px solid silver; border-collapse: collapse; width: 100%; margin: 0 0 1em 0;"
 
|-
 
|-
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| style="background-color: #b7f1ce; border-bottom: 1px solid silver; text-align: center; font-size: 1em; font-weight: bold; margin-top: 0; margin-bottom: 0; padding-top: 0.1em; padding-bottom: 0.1em;" | Review of Issues during the week 20th November to the 27th November 2018.
+
| style="background-color: #b7f1ce; border-bottom: 1px solid silver; text-align: center; font-size: 1em; font-weight: bold; margin-top: 0; margin-bottom: 0; padding-top: 0.1em; padding-bottom: 0.1em;" | Review of Issues during the week 27th November to the 4th December 2018.
 
|}
 
|}
−
* PPD Tier-2 reverted its switch to IPv6.  This resolved a variety of problems for the Tier-2 some of which were being blamed on the Tier-1 (e.g. FTS service failures).
+
* The batch farm was drained and rebooted, to apply the security patch for CVE-2018-18955.
−
 
+
* CMS SAM tests are still appearing as “missing”.  We believe that CMS is aware of this problem and are manually correcting it while working on a fix.
−
* We believe the CMS AAA issues have been resolved.  We will close the tickets but are continuing to look at ways of building more resilience in to the service.  The change that appears to have fixed the problems were made on the 23rd November.  This change reduced the chunk size being requested from Echo from 64MB to 4MB meaning that small data requests would be served much faster, with a slight (~10%) reduction in performance for large data requests.  These changes were only made to the CMS AAA service.    Since then the SAM tests have been all passing.  90% of the the CMS AAA Hammer Cloud test jobs have been passing, which is extremely good.  The Hammer Cloud tests involve jobs at other sites requesting data from RAL.  There can be a significant failure rate that is nothing to do with the site and anything above 70% success rate is considered a pass.  The throughput on the proxy machines is much more balanced with the new chunk size in place.
+
* While completing the weighting up of the ClusterVision 17 storage nodes, the Ceph Manager Daemons crashed and were unavailable for 30 minutes.  This did not impact any production work, as despite their grand name, they simply providing monitoring information about the cluster.  We believe this is a bug in the web dashboard and have disabled it for now and informed the Ceph developers.
−
 
+
−
* The problem report by NA62 in the previous week, when they couldn’t recall data in a timely manner, was the result of a forgotten cron job on the new system.  This cron assigns new media to tape pools as they run short.  The ATLAS tape pool ran out of tapes and a 200 000 file backlog built up before this was noticed.  The tape system priorities writing to tape above recalls (to ensure data is safe), and therefore once the problem was fixed, the next ~48 hours were dominated with clearing this back log.
+
−
 
+
−
* Since 22nd November, SAM tests against the (Old - tape only) CMS Castor instance appear to be "missing" from the reports (and in some plots appear to indicate 100% failure).  If we check the actual results they are passing.  Do not currently understand the issue, migration to new endpoint is only a week away.
+
 
<!-- ***********End Review of Issues during last week*********** ----->
 
<!-- ***********End Review of Issues during last week*********** ----->
 
<!-- *********************************************************** ----->
 
<!-- *********************************************************** ----->
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| style="background-color: #b7f1ce; border-bottom: 1px solid silver; text-align: center; font-size: 1em; font-weight: bold; margin-top: 0; margin-bottom: 0; padding-top: 0.1em; padding-bottom: 0.1em;" | Limits on concurrent batch system jobs.
 
| style="background-color: #b7f1ce; border-bottom: 1px solid silver; text-align: center; font-size: 1em; font-weight: bold; margin-top: 0; margin-bottom: 0; padding-top: 0.1em; padding-bottom: 0.1em;" | Limits on concurrent batch system jobs.
 
|}
 
|}
−
* None currently enforced.
+
* ALICE - 1000
 
<!-- ******************End Limits On Batch System Jobs***************** ----->
 
<!-- ******************End Limits On Batch System Jobs***************** ----->
 
<!-- ****************************************************************** ----->
 
<!-- ****************************************************************** ----->
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| style="background-color: #d8e8ff; border-bottom: 1px solid silver; text-align: center; font-size: 1em; font-weight: bold; margin-top: 0; margin-bottom: 0; padding-top: 0.1em; padding-bottom: 0.1em;" | Declared in the GOC DB
 
| style="background-color: #d8e8ff; border-bottom: 1px solid silver; text-align: center; font-size: 1em; font-weight: bold; margin-top: 0; margin-bottom: 0; padding-top: 0.1em; padding-bottom: 0.1em;" | Declared in the GOC DB
 
|}
 
|}
−
{| border=1 align=center
 
−
|- bgcolor="#7c8aaf"
 
 
{| border=1 align=center
 
{| border=1 align=center
 
|- bgcolor="#7c8aaf"
 
|- bgcolor="#7c8aaf"
 
! Service
 
! Service
−
! ID
 
 
! Scheduled?
 
! Scheduled?
 
! Outage/At Risk
 
! Outage/At Risk
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! Reason
 
! Reason
 
|-
 
|-
−
| -
+
| srm-cms-disk.gridpp.rl.ac.uk
−
| -
+
| SCHEDULED
−
| -
+
| OUTAGE
−
| -
+
| 06/12/2018 08:00
−
| -
+
| 06/12/2018 12:00
−
| -
+
| 4 hours
−
| -
+
| Downtime while migrating to new instance
−
| -
+
−
 
+
 
|}
 
|}
 
* No ongoing downtime  
 
* No ongoing downtime  
−
* No downtime scheduled in the GOCDB for next 2 weeks
 
 
<!-- **********************End GOC DB Entries************************** ----->
 
<!-- **********************End GOC DB Entries************************** ----->
 
<!-- ****************************************************************** ----->
 
<!-- ****************************************************************** ----->
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! Subject
 
! Subject
 
! Scope
 
! Scope
 +
|-
 +
| style="background-color: lightgreen;" | 138665
 +
| mice
 +
| in progress
 +
| urgent
 +
| 04/12/2018
 +
| 05/12/2018
 +
| Middleware
 +
| Problem accessing LFC at RAL
 +
| EGI
 
|-
 
|-
 
| style="background-color: lightgreen;" | 138613
 
| style="background-color: lightgreen;" | 138613
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| urgent
 
| urgent
 
| 29/11/2018
 
| 29/11/2018
−
| 03/12/2018
+
| 05/12/2018
 
| CMS_Data Transfers
 
| CMS_Data Transfers
 
| RAL Staging request
 
| RAL Staging request
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| urgent
 
| urgent
 
| 28/11/2018
 
| 28/11/2018
−
| 30/11/2018
+
| 04/12/2018
 
| CMS_AAA WAN Access
 
| CMS_AAA WAN Access
 
| T1_UK_RAL xrootd reads timing out
 
| T1_UK_RAL xrootd reads timing out
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| urgent
 
| urgent
 
| 26/11/2018
 
| 26/11/2018
−
| 28/11/2018
+
| 04/12/2018
 
| CMS_Data Transfers
 
| CMS_Data Transfers
 
| Transfers failing from T2_PL_Swierk to RAL
 
| Transfers failing from T2_PL_Swierk to RAL
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| cms
 
| cms
 
| reopened
 
| reopened
−
| urgent
+
| very urgent
 
| 26/11/2018
 
| 26/11/2018
−
| 03/12/2018
+
| 04/12/2018
 
| CMS_Data Transfers
 
| CMS_Data Transfers
−
| Transfers failing from RAL to T2_CH_CERN
+
| All Transfers failing from RAL_Disk
 
| WLCG
 
| WLCG
 
|-
 
|-
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| EGI
 
| EGI
 
|-
 
|-
−
| style="background-color: lightgreen;" | 138033
+
| style="background-color: yellow;" | 138033
 
| atlas
 
| atlas
 
| in progress
 
| in progress
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| EGI
 
| EGI
 
|-
 
|-
−
| style="background-color: lightgreen;" | 137897
+
| style="background-color: yellow;" | 137897
 
| enmr.eu
 
| enmr.eu
 
| in progress
 
| in progress
Line 282: Line 282:
 
| EGI
 
| EGI
 
|}
 
|}
 +
 +
 
<!-- **********************End Availability Report************************** ----->
 
<!-- **********************End Availability Report************************** ----->
 
<!-- *********************************************************************** ----->
 
<!-- *********************************************************************** ----->
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! Subject
 
! Subject
 
! Scope
 
! Scope
 +
|-
 +
| 138549
 +
| atlas
 +
| solved
 +
| top priority
 +
| 28/11/2018
 +
| 28/11/2018
 +
| Other
 +
| This TEST ALARM has been raised for testing GGUS alarm work flow after a new GGUS release.
 +
| WLCG
 
|-
 
|-
 
| 138331
 
| 138331
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| CMS_Data Transfers
 
| CMS_Data Transfers
 
| Posible expired proxy at RAL
 
| Posible expired proxy at RAL
 +
| WLCG
 +
|-
 +
| 138327
 +
| cms
 +
| solved
 +
| urgent
 +
| 16/11/2018
 +
| 27/11/2018
 +
| CMS_Data Transfers
 +
| RAL FTS reporting connection issue with many hosts
 
| WLCG
 
| WLCG
 
|-
 
|-
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| CMS_Data Transfers
 
| CMS_Data Transfers
 
| Transfers failing from T2_US_Wisconsin to T1_UK_RAL_Disk
 
| Transfers failing from T2_US_Wisconsin to T1_UK_RAL_Disk
 +
| WLCG
 +
|-
 +
| 138218
 +
| cms
 +
| closed
 +
| urgent
 +
| 09/11/2018
 +
| 28/11/2018
 +
| CMS_Data Transfers
 +
| Transfers failing from RAL_Buffer to TIFR
 
| WLCG
 
| WLCG
 
|-
 
|-
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! Comments
 
! Comments
 
|-
 
|-
−
| 2018-11-14
+
| 2018-11-28
−
| 100
+
−
| 100
+
 
| 100
 
| 100
 
| 100
 
| 100
 +
| 99
 
| 100
 
| 100
 
| 100
 
| 100
 +
| -1
 
|  
 
|  
 
|-
 
|-
−
| 2018-11-15
+
| 2018-11-29
 
| 100
 
| 100
 
| 100
 
| 100
 +
| 98
 +
| 99
 
| 100
 
| 100
−
| 100
+
| -1
−
| style="background-color: orange;" | 96
+
−
| 100
+
 
|  
 
|  
 
|-
 
|-
−
| 2018-11-16
+
| 2018-11-30
−
| 100
+
−
| 100
+
 
| 100
 
| 100
 
| 100
 
| 100
 +
| 98
 
| 100
 
| 100
 
| 100
 
| 100
 +
| -1
 
|  
 
|  
 
|-
 
|-
−
| 2018-11-17
+
| 2018-12-01
−
| 100
+
−
| 100
+
 
| 100
 
| 100
 
| 100
 
| 100
 +
| style="background-color: orange;" | 95
 
| 100
 
| 100
 
| 100
 
| 100
 +
| -1
 
|  
 
|  
 
|-
 
|-
−
| 2018-11-18
+
| 2018-12-02
 
| 100
 
| 100
 
| 100
 
| 100
−
| style="background-color: red;" | 35
+
| style="background-color: orange;" | 95
 
| 100
 
| 100
 
| 100
 
| 100
−
| 100
+
| -1
−
| CMS problem was the CE tests not running, see GGUS#138351.
+
|  
 
|-
 
|-
−
| 2018-11-19
+
| 2018-12-03
 
| 100
 
| 100
 
| 100
 
| 100
−
| style="background-color: red;" | 45
+
| style="background-color: orange;" | 95
 
| 100
 
| 100
 
| 100
 
| 100
−
| 100
+
| style="background-color: red;" | 66.4
−
| CMS problem was the CE tests not running, see GGUS#138351.
+
|
 
|-
 
|-
−
| 2018-11-20
+
| 2018-12-04
 
| 100
 
| 100
 
| 100
 
| 100
−
| style="background-color: red;" | 56
+
| style="background-color: orange;" | 96
 
| 100
 
| 100
 
| 100
 
| 100
−
| style="background-color: red;" | 87
+
| style="background-color: orange;" | 90.625
−
| CMS problem was the CE tests not running, see GGUS#138351.
+
|
 
|}
 
|}
  
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! Day !! Atlas HC !! CMS HC !! Comment
 
! Day !! Atlas HC !! CMS HC !! Comment
 
|-
 
|-
−
| 2018-11-06 || 98 || 100||   
+
| 2018-11-28 || 100 || 100||   
−
|-
+
−
| 2018-11-07 || 100 || 99 ||
+
 
|-
 
|-
−
| 2018-11-08 || 100 || 99 ||  
+
| 2018-11-29 || 100 || 99 ||  
 
|-
 
|-
−
| 2018-11-09 || 100 || 98 ||  
+
| 2018-11-30 || 100 || 99 ||  
 
|-
 
|-
−
| 2018-11-10 || 100 || style="background-color: orange;" | 96 ||  
+
| 2018-12-01 || 100 || 100 ||  
 
|-
 
|-
−
| 2018-11-11 || 100 || style="background-color: orange;" | 92 ||  
+
| 2018-12-02 || 100 || 99 ||  
 
|-
 
|-
−
| 2018-11-12 || 100 || 99 ||  
+
| 2018-12-03 || 100 || 99 ||  
 
|-
 
|-
−
| 2018-11-13 || 100 || 99 ||  
+
| 2018-12-04 || 100 || 99 ||  
 
|-
 
|-
 
|}  
 
|}  

Latest revision as of 12:59, 5 December 2018

RAL Tier1 Operations Report for 27th November 2018

Review of Issues during the week 27th November to the 4th December 2018.
  • The batch farm was drained and rebooted, to apply the security patch for CVE-2018-18955.
  • CMS SAM tests are still appearing as “missing”. We believe that CMS is aware of this problem and are manually correcting it while working on a fix.
  • While completing the weighting up of the ClusterVision 17 storage nodes, the Ceph Manager Daemons crashed and were unavailable for 30 minutes. This did not impact any production work, as despite their grand name, they simply providing monitoring information about the cluster. We believe this is a bug in the web dashboard and have disabled it for now and informed the Ceph developers.
Current operational status and issues
  • NTR
Resolved Castor Disk Server Issues
Machine VO DiskPool dxtx Comments
- - - - -
Ongoing Castor Disk Server Issues
Machine VO DiskPool dxtx Comments
- - - - -
Limits on concurrent batch system jobs.
  • ALICE - 1000
Notable Changes made since the last meeting.
  • NTR
Entries in GOC DB starting since the last report.
Service ID Scheduled? Outage/At Risk Start End Duration Reason
- - - - - - - -
Declared in the GOC DB
Service Scheduled? Outage/At Risk Start End Duration Reason
srm-cms-disk.gridpp.rl.ac.uk SCHEDULED OUTAGE 06/12/2018 08:00 06/12/2018 12:00 4 hours Downtime while migrating to new instance
  • No ongoing downtime
Advanced warning for other interventions
The following items are being discussed and are still to be formally scheduled and announced.

Listing by category:

  • DNS servers will be rolled out within the Tier1 network.
Open

GGUS Tickets (Snapshot taken during morning of the meeting).

Request id Affected vo Status Priority Date of creation Last update Type of problem Subject Scope
138665 mice in progress urgent 04/12/2018 05/12/2018 Middleware Problem accessing LFC at RAL EGI
138613 cms in progress urgent 29/11/2018 05/12/2018 CMS_Data Transfers RAL Staging request WLCG
138584 cms in progress urgent 28/11/2018 04/12/2018 CMS_AAA WAN Access T1_UK_RAL xrootd reads timing out WLCG
138500 cms in progress urgent 26/11/2018 04/12/2018 CMS_Data Transfers Transfers failing from T2_PL_Swierk to RAL WLCG
138493 cms reopened very urgent 26/11/2018 04/12/2018 CMS_Data Transfers All Transfers failing from RAL_Disk WLCG
138461 lhcb in progress less urgent 22/11/2018 26/11/2018 Information System RAL Top-BDII has OLD RETIRED Bristol Site-BDII not new Production GOC-DB Site-BDII in its info EGI
138361 t2k.org in progress less urgent 19/11/2018 01/12/2018 Other RAL-LCG2: t2k.org LFC to DFC transition EGI
138033 atlas in progress urgent 01/11/2018 30/11/2018 Other singularity jobs failing at RAL EGI
137897 enmr.eu in progress less urgent 23/10/2018 28/11/2018 Accounting enmr.eu accounting at RAL EGI


GGUS Tickets Closed Last week
Request id Affected vo Status Priority Date of creation Last update Type of problem Subject Scope
138549 atlas solved top priority 28/11/2018 28/11/2018 Other This TEST ALARM has been raised for testing GGUS alarm work flow after a new GGUS release. WLCG
138331 cms closed urgent 16/11/2018 03/12/2018 CMS_Data Transfers Posible expired proxy at RAL WLCG
138327 cms solved urgent 16/11/2018 27/11/2018 CMS_Data Transfers RAL FTS reporting connection issue with many hosts WLCG
138315 cms closed urgent 15/11/2018 03/12/2018 CMS_Data Transfers Transfers failing from T2_US_Wisconsin to T1_UK_RAL_Disk WLCG
138218 cms closed urgent 09/11/2018 28/11/2018 CMS_Data Transfers Transfers failing from RAL_Buffer to TIFR WLCG
137822 lhcb solved top priority 18/10/2018 04/12/2018 File Transfer FTS server seems in bad state. WLCG

Availability Report

Target Availability for each site is 97.0% Red <90% Orange <97%
Day Atlas Atlas-Echo CMS LHCB Alice OPS Comments
2018-11-28 100 100 99 100 100 -1
2018-11-29 100 100 98 99 100 -1
2018-11-30 100 100 98 100 100 -1
2018-12-01 100 100 95 100 100 -1
2018-12-02 100 100 95 100 100 -1
2018-12-03 100 100 95 100 100 66.4
2018-12-04 100 100 96 100 100 90.625
Hammercloud Test Report
Target Availability for each site is 97.0% Red <90% Orange <97%
Day Atlas HC CMS HC Comment
2018-11-28 100 100
2018-11-29 100 99
2018-11-30 100 99
2018-12-01 100 100
2018-12-02 100 99
2018-12-03 100 99
2018-12-04 100 99

Key: Atlas HC = Atlas HammerCloud (Queue RAL-LCG2_UCORE, Template 841); CMS HC = CMS HammerCloud

Notes from Meeting.
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