Difference between revisions of "Tier1 Operations Report 2018-10-02"
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| CMS_AAA WAN Access | | CMS_AAA WAN Access | ||
| xrootd host not reachable at T1_UK_RAL | | xrootd host not reachable at T1_UK_RAL | ||
+ | | WLCG | ||
+ | |- | ||
+ | | 137416 | ||
+ | | none | ||
+ | | verified | ||
+ | | top priority | ||
+ | | 26/09/2018 | ||
+ | | 01/10/2018 | ||
+ | | Other | ||
+ | | This TEST ALARM has been raised for testing GGUS alarm work flow after a new GGUS release. | ||
+ | | WLCG | ||
+ | |- | ||
+ | | 137398 | ||
+ | | cms | ||
+ | | solved | ||
+ | | urgent | ||
+ | | 26/09/2018 | ||
+ | | 03/10/2018 | ||
+ | | CMS_Data Transfers | ||
+ | | Transfers failing from SPRACE to RAL - No data available | ||
| WLCG | | WLCG | ||
|- | |- | ||
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| Monitoring | | Monitoring | ||
| enable the nagios notifications - CVMFS | | enable the nagios notifications - CVMFS | ||
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| EGI | | EGI | ||
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| EGI | | EGI | ||
|- | |- | ||
− | | | + | | 136840 |
− | | | + | | snoplus.snolab.ca |
| solved | | solved | ||
− | | | + | | very urgent |
− | | | + | | 23/08/2018 |
− | | | + | | 03/10/2018 |
| Other | | Other | ||
− | | | + | | Cannot upload files to LFN from Storage node |
| EGI | | EGI | ||
|- | |- |
Revision as of 09:33, 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 |
- Tier-1 encountered another IPv6 issue 17/9/18 - 23:00), however Digital Solutions were able to resolve this issue within 2 hours
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. |
- GROUP_CMS_LIMIT = 4000
- GROUP_ATLAS_LIMIT = 8000
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:
- 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.
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 |
---|---|---|---|---|---|---|---|---|
137498 | cms | in progress | urgent | 01/10/2018 | 03/10/2018 | CMS_AAA WAN Access | Xrootd FileOpenErrors in production jobs | WLCG |
137391 | atlas | in progress | urgent | 25/09/2018 | 03/10/2018 | Network problem | UK RAL-LCG2 transfer errors with Communication error on send | WLCG |
137254 | ops | in progress | less urgent | 18/09/2018 | 01/10/2018 | Operations | [Rod Dashboard] Issue detected : ch.cern.LFC-Write-ops@lfc.gridpp.rl.ac.uk | EGI |
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 |
137416 | none | verified | top priority | 26/09/2018 | 01/10/2018 | Other | This TEST ALARM has been raised for testing GGUS alarm work flow after a new GGUS release. | WLCG |
137398 | cms | solved | urgent | 26/09/2018 | 03/10/2018 | CMS_Data Transfers | Transfers failing from SPRACE to RAL - No data available | WLCG |
137169 | none | closed | less urgent | 13/09/2018 | 28/09/2018 | Monitoring | enable the nagios notifications - CVMFS | 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 |
136840 | snoplus.snolab.ca | solved | very urgent | 23/08/2018 | 03/10/2018 | Other | Cannot upload files to LFN from Storage node | 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. |