Difference between revisions of "Tier1 Operations Report 2018-10-02"
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(Created page with "==RAL Tier1 Operations Report for 2 October 2018== __NOTOC__ ====== ====== <!-- ************************************************************* -----> <!-- ***********Start R...") |
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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 24th September 2018 to the 2nd October 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 24th September 2018 to the 2nd October 2018. | ||
|} | |} | ||
− | * | + | * The on-going LFC issue appeared to have had been resolved early in the week (w/e 30th), as such the service was returned to Production. |
− | * | + | * First breakage of database = 19th August Fixed 21st September Second breakage of database = Tuesday 25th September 1pm. |
− | * | + | * Currently we have reasonable confidence that LFC issues are now understood and there is a fix: |
− | * | + | ** In conjunction with Fabrizio Furano (former LFC code developer at CERN), we have identified a flaw in the Oracle to MySQL migration process. |
− | + | ** An Oracle SEQUENCE had not been migrated into a MySQL table therefore it was only possible to register 6820 new records in the new MYSQL backend each time before a crash. | |
+ | ** This is explanation also accounts for the fact that rolling back the database to an earlier backup also worked | ||
+ | ** Fabrizio provided a simple solution to fix the problem. | ||
+ | * We are now planning to implement the fix and restore the LFC to a full production service by close of business 02/10/2018. | ||
<!-- ***********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;" | Current operational status and issues | | 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;" | Current operational status and issues | ||
|} | |} | ||
− | * | + | * |
<!-- ***********End Current operational status and issues*********** -----> | <!-- ***********End Current operational status and issues*********** -----> | ||
<!-- *************************************************************** -----> | <!-- *************************************************************** -----> | ||
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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. | ||
|} | |} | ||
− | * | + | * |
− | + | ||
<!-- ******************End Limits On Batch System Jobs***************** -----> | <!-- ******************End Limits On Batch System Jobs***************** -----> | ||
<!-- ****************************************************************** -----> | <!-- ****************************************************************** -----> | ||
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! Reason | ! Reason | ||
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|} | |} | ||
<!-- **********************End GOC DB Entries************************** -----> | <!-- **********************End GOC DB Entries************************** -----> | ||
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* Castor: | * Castor: | ||
+ | ** Disk only storage will end in Castor. A new single tape-only Castor instance (called WLCGTape) is being tested. This is using generic Catsor headnodes on SL7 configured by Quattor/Aquilon with a slightly newer Castor version. | ||
** Update systems to use SL7 and configured by Quattor/Aquilon. (Tape servers done) | ** Update systems to use SL7 and configured by Quattor/Aquilon. (Tape servers done) | ||
− | |||
* Internal | * Internal | ||
** DNS servers will be rolled out within the Tier1 network. | ** DNS servers will be rolled out within the Tier1 network. | ||
+ | |||
<!-- ***************End Advanced warning for other interventions*************** -----> | <!-- ***************End Advanced warning for other interventions*************** -----> | ||
<!-- ************************************************************************** -----> | <!-- ************************************************************************** -----> | ||
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! Subject | ! Subject | ||
! Scope | ! Scope | ||
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| style="background-color: green;" | 137391 | | style="background-color: green;" | 137391 | ||
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| urgent | | urgent | ||
| 25/09/2018 | | 25/09/2018 | ||
− | | | + | | 03/10/2018 |
| Network problem | | Network problem | ||
| UK RAL-LCG2 transfer errors with Communication error on send | | UK RAL-LCG2 transfer errors with Communication error on send | ||
| WLCG | | WLCG | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
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|- | |- | ||
| style="background-color: green;" | 137195 | | style="background-color: green;" | 137195 | ||
Line 247: | Line 230: | ||
| less urgent | | less urgent | ||
| 14/09/2018 | | 14/09/2018 | ||
− | | | + | | 26/09/2018 |
| Operations | | Operations | ||
| [Rod Dashboard] Issues detected at RAL-LCG2 | | [Rod Dashboard] Issues detected at RAL-LCG2 | ||
Line 260: | Line 243: | ||
| Data Management - generic | | Data Management - generic | ||
| LFC entry has file size 0, preventsw registering of additional replicas | | LFC entry has file size 0, preventsw registering of additional replicas | ||
− | |||
− | |||
− | |||
− | |||
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− | |||
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| EGI | | EGI | ||
|- | |- | ||
Line 277: | Line 250: | ||
| very urgent | | very urgent | ||
| 14/08/2018 | | 14/08/2018 | ||
− | | | + | | 03/10/2018 |
| File Transfer | | File Transfer | ||
| background of transfer errors | | background of transfer errors | ||
Line 284: | Line 257: | ||
| style="background-color: red;" | 136199 | | style="background-color: red;" | 136199 | ||
| lhcb | | lhcb | ||
− | | | + | | on hold |
| very urgent | | very urgent | ||
| 18/07/2018 | | 18/07/2018 | ||
− | | | + | | 01/10/2018 |
| File Transfer | | File Transfer | ||
| Lots of submitted transfers on RAL FTS | | Lots of submitted transfers on RAL FTS | ||
− | |||
− | |||
− | |||
− | |||
− | |||
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| WLCG | | WLCG | ||
|- | |- | ||
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! Scope | ! Scope | ||
|- | |- | ||
− | | | + | | 137434 |
− | | | + | | cms |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
| solved | | solved | ||
| urgent | | urgent | ||
− | | | + | | 26/09/2018 |
− | | | + | | 27/09/2018 |
− | | | + | | CMS_AAA WAN Access |
− | | | + | | xrootd host not reachable at T1_UK_RAL |
| WLCG | | WLCG | ||
+ | |- | ||
+ | | 137169 | ||
+ | | none | ||
+ | | closed | ||
+ | | less urgent | ||
+ | | 13/09/2018 | ||
+ | | 28/09/2018 | ||
+ | | Monitoring | ||
+ | | enable the nagios notifications - CVMFS | ||
+ | | EGI | ||
|- | |- | ||
| 137151 | | 137151 | ||
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| EGI | | EGI | ||
|- | |- | ||
− | | | + | | 137128 |
− | | | + | | snoplus.snolab.ca |
− | | | + | | closed |
− | | | + | | urgent |
− | | | + | | 11/09/2018 |
− | | | + | | 28/09/2018 |
| File Access | | File Access | ||
− | | | + | | RAL remote host name change? |
− | | | + | | EGI |
|- | |- | ||
− | | | + | | 136884 |
| t2k.org | | t2k.org | ||
+ | | verified | ||
+ | | top priority | ||
+ | | 27/08/2018 | ||
+ | | 27/09/2018 | ||
+ | | Data Management - generic | ||
+ | | lcg-cr not working for t2k vo | ||
+ | | EGI | ||
+ | |- | ||
+ | | 136757 | ||
+ | | mice | ||
| solved | | solved | ||
| less urgent | | less urgent | ||
− | | | + | | 17/08/2018 |
− | | | + | | 25/09/2018 |
− | | | + | | Other |
− | | | + | | Missing lsc files for mice VO on lfc.gridpp.rl.ac.uk ? |
| EGI | | EGI | ||
|- | |- | ||
− | | | + | | 136366 |
− | | | + | | mice |
− | | | + | | verified |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
| less urgent | | less urgent | ||
− | | | + | | 25/07/2018 |
− | | | + | | 28/09/2018 |
− | | | + | | Local Batch System |
− | | | + | | Remove MICE Queue from RAL T1 Batch |
| EGI | | EGI | ||
|- | |- | ||
− | | | + | | 136028 |
− | | | + | | cms |
| solved | | solved | ||
| top priority | | top priority | ||
− | | | + | | 10/07/2018 |
− | | | + | | 28/09/2018 |
− | | | + | | CMS_AAA WAN Access |
− | | | + | | Issues reading files at T1_UK_RAL_Disk |
− | | | + | | WLCG |
− | |}<!-- **********************End Availability Report************************** -----> | + | |} |
+ | <!-- **********************End Availability Report************************** -----> | ||
<!-- *********************************************************************** -----> | <!-- *********************************************************************** -----> | ||
<!-- **********************End GGUS Tickets************************** -----> | <!-- **********************End GGUS Tickets************************** -----> | ||
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! Comments | ! Comments | ||
|- | |- | ||
− | | 2018-09- | + | | 2018-09-24 |
+ | | 100 | ||
| 100 | | 100 | ||
| 100 | | 100 | ||
− | |||
| 100 | | 100 | ||
| 100 | | 100 | ||
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− | | 2018-09- | + | | 2018-09-25 |
| 100 | | 100 | ||
| 100 | | 100 | ||
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− | | 2018-09- | + | | 2018-09-26 |
| 100 | | 100 | ||
| 100 | | 100 | ||
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− | | 2018-09- | + | | 2018-09-27 |
| 100 | | 100 | ||
| 100 | | 100 | ||
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|- | |- | ||
− | | 2018-09- | + | | 2018-09-28 |
+ | | 100 | ||
| 100 | | 100 | ||
| 100 | | 100 | ||
− | |||
| 100 | | 100 | ||
| 100 | | 100 | ||
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− | | 2018-09- | + | | 2018-09-29 |
+ | | 100 | ||
| 100 | | 100 | ||
| 100 | | 100 | ||
− | |||
| 100 | | 100 | ||
| 100 | | 100 | ||
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− | | 2018-09- | + | | 2018-09-30 |
| 100 | | 100 | ||
| 100 | | 100 | ||
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− | | 2018- | + | | 2018-10-01 |
− | | | + | | style="background-color: red;" | 53 |
| 100 | | 100 | ||
| 100 | | 100 | ||
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! Day !! Atlas HC !! CMS HC !! Comment | ! Day !! Atlas HC !! CMS HC !! Comment | ||
|- | |- | ||
− | | 2018-08- | + | | 2018-08-24 || 100 || 99 || |
|- | |- | ||
− | | 2018-08- | + | | 2018-08-25 || 100 || 99 || |
|- | |- | ||
− | | 2018-08- | + | | 2018-08-26 || 100 || 100 || |
|- | |- | ||
− | | 2018-08- | + | | 2018-08-27 || 100 || 100 || |
|- | |- | ||
− | | 2018-08- | + | | 2018-08-28 || 100 || 100 || |
|- | |- | ||
− | | 2018-08- | + | | 2018-08-29 || 100 || 99 || |
|- | |- | ||
− | | 2018-08- | + | | 2018-08-30 || 100 || 99 || |
|- | |- | ||
− | | 2018-08- | + | | 2018-08-01 || 100 || 99 || |
|- | |- | ||
|} | |} |
Latest revision as of 14:01, 3 October 2018
RAL Tier1 Operations Report for 2 October 2018
Review of Issues during the week 24th September 2018 to the 2nd October 2018. |
- The on-going LFC issue appeared to have had been resolved early in the week (w/e 30th), as such the service was returned to Production.
- First breakage of database = 19th August Fixed 21st September Second breakage of database = Tuesday 25th September 1pm.
- Currently we have reasonable confidence that LFC issues are now understood and there is a fix:
- In conjunction with Fabrizio Furano (former LFC code developer at CERN), we have identified a flaw in the Oracle to MySQL migration process.
- An Oracle SEQUENCE had not been migrated into a MySQL table therefore it was only possible to register 6820 new records in the new MYSQL backend each time before a crash.
- This is explanation also accounts for the fact that rolling back the database to an earlier backup also worked
- Fabrizio provided a simple solution to fix the problem.
- We are now planning to implement the fix and restore the LFC to a full production service by close of business 02/10/2018.
Current operational status and issues |
Resolved Castor Disk Server Issues |
Machine | VO | DiskPool | dxtx | Comments |
---|---|---|---|---|
- | - | - | - | - |
Ongoing Castor Disk Server Issues |
Machine | VO | DiskPool | dxtx | Comments |
---|---|---|---|---|
gdss747 | Atlas | atlasStripInput | d1t0 | Currently in intervention. |
gdss753 | Atlas | atlasStripInput | d1t0 | Currently in intervention. |
Limits on concurrent batch system jobs. |
Notable Changes made since the last meeting. |
- None.
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 | ID | Scheduled? | Outage/At Risk | Start | End | Duration | Reason |
---|---|---|---|---|---|---|---|
- | - | - | - | - | - | - | - |
- No ongoing downtime
- No downtime scheduled in the GOCDB for next 2 weeks
Advanced warning for other interventions |
The following items are being discussed and are still to be formally scheduled and announced. |
Listing by category:
- Castor:
- Disk only storage will end in Castor. A new single tape-only Castor instance (called WLCGTape) is being tested. This is using generic Catsor headnodes on SL7 configured by Quattor/Aquilon with a slightly newer Castor version.
- Update systems to use SL7 and configured by Quattor/Aquilon. (Tape servers done)
- Internal
- 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 |
---|---|---|---|---|---|---|---|---|
137391 | atlas | in progress | urgent | 25/09/2018 | 03/10/2018 | Network problem | UK RAL-LCG2 transfer errors with Communication error on send | WLCG |
137195 | ops | in progress | less urgent | 14/09/2018 | 26/09/2018 | Operations | [Rod Dashboard] Issues detected at RAL-LCG2 | EGI |
137153 | t2k.org | in progress | urgent | 12/09/2018 | 25/09/2018 | Data Management - generic | LFC entry has file size 0, preventsw registering of additional replicas | EGI |
136701 | lhcb | waiting for reply | very urgent | 14/08/2018 | 03/10/2018 | File Transfer | background of transfer errors | WLCG |
136199 | lhcb | on hold | very urgent | 18/07/2018 | 01/10/2018 | File Transfer | Lots of submitted transfers on RAL FTS | WLCG |
124876 | ops | in progress | less urgent | 07/11/2016 | 23/07/2018 | Operations | [Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk | EGI |
GGUS Tickets Closed Last week |
Request id | Affected vo | Status | Priority | Date of creation | Last update | Type of problem | Subject | Scope |
---|---|---|---|---|---|---|---|---|
137434 | cms | solved | urgent | 26/09/2018 | 27/09/2018 | CMS_AAA WAN Access | xrootd host not reachable at T1_UK_RAL | WLCG |
137169 | none | closed | less urgent | 13/09/2018 | 28/09/2018 | Monitoring | enable the nagios notifications - CVMFS | EGI |
137151 | t2k.org | solved | urgent | 12/09/2018 | 24/09/2018 | File Transfer | Cannot upload files to grid an register replica | EGI |
137128 | snoplus.snolab.ca | closed | urgent | 11/09/2018 | 28/09/2018 | File Access | RAL remote host name change? | EGI |
136884 | t2k.org | verified | top priority | 27/08/2018 | 27/09/2018 | Data Management - generic | lcg-cr not working for t2k vo | EGI |
136757 | mice | solved | less urgent | 17/08/2018 | 25/09/2018 | Other | Missing lsc files for mice VO on lfc.gridpp.rl.ac.uk ? | EGI |
136366 | mice | verified | less urgent | 25/07/2018 | 28/09/2018 | Local Batch System | Remove MICE Queue from RAL T1 Batch | EGI |
136028 | cms | solved | top priority | 10/07/2018 | 28/09/2018 | CMS_AAA WAN Access | Issues reading files at T1_UK_RAL_Disk | WLCG |
Availability Report |
Day | Atlas | Atlas-Echo | CMS | LHCB | Alice | OPS | Comments |
---|---|---|---|---|---|---|---|
2018-09-24 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-09-25 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-09-26 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-09-27 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-09-28 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-09-29 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-09-30 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-10-01 | 53 | 100 | 100 | 100 | 100 | 100 |
Hammercloud Test Report |
Target Availability for each site is 97.0% | Red <90% | Orange <97% |
Day | Atlas HC | CMS HC | Comment |
---|---|---|---|
2018-08-24 | 100 | 99 | |
2018-08-25 | 100 | 99 | |
2018-08-26 | 100 | 100 | |
2018-08-27 | 100 | 100 | |
2018-08-28 | 100 | 100 | |
2018-08-29 | 100 | 99 | |
2018-08-30 | 100 | 99 | |
2018-08-01 | 100 | 99 |
Key: Atlas HC = Atlas HammerCloud (Queue RAL-LCG2_UCORE, Template 841); CMS HC = CMS HammerCloud
Notes from Meeting. |