Difference between revisions of "Tier1 Operations Report 2015-05-06"
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* gfal2 and davix rpms are in the process of being updated across the worker nodes. | * gfal2 and davix rpms are in the process of being updated across the worker nodes. | ||
| + | * Yesterday (5th May) the two remaining CREAM CEs were put into draining mode as the next step in their decommissioning. | ||
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Revision as of 10:09, 6 May 2015
RAL Tier1 Operations Report for 6th May2015
| Review of Issues during the three weeks 15th April to 6th May 2015. |
- On Wednesday 8th April a minor network change triggered a wider problem across the Tier1 network and caused significant disruption of services. The planned Castor upgrade for that day had to be abandoned. A post mortem is being generated for this incident.
| Resolved Disk Server Issues |
- GDSS633 (AtlasTape - D-T1) failed on Sunday 3rd May. It was returned to service late evening the following day (Bank Holiday Monday 4th May).
| Current operational status and issues |
- We are running with a single router connecting the Tier1 network to the site network, rather than a resilient pair.
- The bypass link from the Tier1 to the UKLR has been restored to 2 x 10Gb/s but traffic going outbound is not being correctly balanced across the two links. This is still under investigation.
- Since 27th March there has been sporadic low level packet loss on the OPN primary link to CERN. This is being investigated.
| Ongoing Disk Server Issues |
- None
| Notable Changes made this last week. |
- gfal2 and davix rpms are in the process of being updated across the worker nodes.
- Yesterday (5th May) the two remaining CREAM CEs were put into draining mode as the next step in their decommissioning.
| Declared in the GOC DB |
| Service | Scheduled? | Outage/At Risk | Start | End | Duration | Reason |
|---|---|---|---|---|---|---|
| lcgfts3.gridpp.rl.ac.uk, | SCHEDULED | WARNING | 07/05/2015 11:00 | 07/05/2015 12:00 | 1 hour | Update of Production FTS3 Server to version 3.2.33 |
| cream-ce01.gridpp.rl.ac.uk, cream-ce02.gridpp.rl.ac.uk. | SCHEDULED | OUTAGE | 05/05/2015 12:00 | 02/06/2015 12:00 | 28 days | Decommissioning of CREAM CEs (cream-ce01.gridpp.rl.ac.uk, cream-ce02.gridpp.rl.ac.uk). |
| Advanced warning for other interventions |
| The following items are being discussed and are still to be formally scheduled and announced. |
- Turn off CREAM CEs (planned for 5th May).
- Turn off ARC-CE05. This will leave four ARC CEs (as planned.) This fifth was set-up to temporarily workround a specific problem and is no longer required.
Listing by category:
- Databases:
- Switch LFC/3D to new Database Infrastructure.
- Update to Oracle 11.2.0.4. This will affect all services that use Oracle databases (Castor, LFC and Atlas Frontier)
- Castor:
- Update SRMs to new version (includes updating to SL6).
- Fix discrepancies found in some of the Castor database tables and columns. (The issue has no operational impact.)
- Networking:
- Separate some non-Tier1 services off our network so as to be able to more easily investigate the router problems.
- Resolve problems with primary Tier1 Router
- Enable the RIP protocol for updating routing tables on the Tier1 routers. (Install patch to Router software).
- Increase bandwidth of the link from the Tier1 into the RAL internal site network to 40Gbit.
- Make routing changes to allow the removal of the UKLight Router.
- Fabric
- Firmware updates on remaining EMC disk arrays (Castor, FTS/LFC)
| Entries in GOC DB starting since the last report. |
| Service | Scheduled? | Outage/At Risk | Start | End | Duration | Reason |
|---|---|---|---|---|---|---|
| cream-ce01.gridpp.rl.ac.uk, cream-ce02.gridpp.rl.ac.uk | SCHEDULED | OUTAGE | 05/05/2015 12:00 | 02/06/2015 12:00 | 28 days, | Decommissioning of CREAM CEs (cream-ce01.gridpp.rl.ac.uk, cream-ce02.gridpp.rl.ac.uk). |
| lcgft-atlas.gridpp.rl.ac.uk, | SCHEDULED | WARNING | 05/05/2015 09:00 | 05/05/2015 11:55 | 2 hours and 55 minutes | Regular patching of Oracle Database behind the Atlas Frontier service. |
| lfc.gridpp.rl.ac.uk | SCHEDULED | OUTAGE | 28/04/2015 09:00 | 28/04/2015 14:03 | 5 hours and 3 minutes | Update of Oracle Database behind the LFC service. There will be an initial outage of up to 90 minutes. Following this the LFC will be available READ-ONLY for some (up to five) hours. At the end of the upgrade the LFC will again be unavailable for a period of up to 90 minutes. |
| All Castor (all SRM endpoints) | SCHEDULED | OUTAGE | 15/04/2015 09:30 | 15/04/2015 11:57 | 2 hours and 27 minutes | Castor upgrade to 2.1.14-15 as this was postponed last week. |
| Open GGUS Tickets (Snapshot during morning of meeting) |
| GGUS ID | Level | Urgency | State | Creation | Last Update | VO | Subject |
|---|---|---|---|---|---|---|---|
| 113010 | Green | Very Urgent | Waiting Reply | 2015-04-13 | 2015-04-14 | SNO+ | Job statuses reported by WMS not updating |
| 112977 | Green | Very Urgent | In Progress | 2015-04-10 | 2015-04-13 | CMS | High failure rate for RAL! |
| 112896 | Green | Urgent | In Progress | 2015-04-09 | 2015-04-09 | CMS | Please check this dataset |
| 112866 | Green | Less Urgent | In Progress | 2015-04-02 | 2015-04-07 | CMS | Many jobs are failed/aborted at T1_UK_RAL |
| 112819 | Green | Less Urgent | In Progress | 2015-04-02 | 2015-04-07 | SNO+ | ArcSync hanging |
| 112721 | Green | Less Urgent | waiting for reply | 2015-03-28 | 2015-04-06 | Atlas | RAL-LCG2: SOURCE Failed to get source file size |
| 112713 | Green | Urgent | In Progress | 2015-03-27 | 2015-03-31 | CMS | Please clean up unmerged area - RAL |
| 111699 | Yellow | Less Urgent | In Progress | 2015-02-10 | 2015-03-23 | Atlas | gLExec hammercloud jobs keep failing at RAL-LCG2 & RALPP |
| 109694 | Red | Urgent | In Progress | 2014-11-03 | 2015-03-31 | SNO+ | gfal-copy failing for files at RAL |
| 108944 | Red | Less Urgent | In Progress | 2014-10-01 | 2015-03-30 | CMS | AAA access test failing at T1_UK_RAL |
| Availability Report |
Key: Atlas HC = Atlas HammerCloud (Queue ANALY_RAL_SL6, Template 508); CMS HC = CMS HammerCloud
| Day | OPS | Alice | Atlas | CMS | LHCb | Atlas HC | CMS HC | Comment |
|---|---|---|---|---|---|---|---|---|
| 15/04/15 | 97.9 | 100 | 90.0 | 90.0 | 90.0 | 100 | 98 | Castor 2.1.14-15 upgrade. |
| 16/04/15 | 100 | 100 | 94.0 | 100 | 100 | 100 | 99 | Couple of SRM Test errors around half an hour apart. |
| 17/04/15 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
| 18/04/15 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
| 19/04/15 | 100 | 100 | 100 | 100 | 100 | 98 | 100 | |
| 20/04/15 | 100 | 100 | 100 | 100 | 100 | 100 | n/a | |
| 21/04/15 | 100 | 100 | 100 | 100 | 100 | 100 | n/a | |
| 22/04/15 | 100 | 100 | 100 | 100 | 100 | 100 | n/a | |
| 23/04/15 | 100 | 100 | 100 | 100 | 100 | 100 | n/a | |
| 24/04/15 | 100 | 100 | 100 | 100 | 100 | 100 | n/a | |
| 25/04/15 | 100 | 100 | 100 | 100 | 100 | 100 | n/a | |
| 26/04/15 | 100 | 100 | 100 | 100 | 100 | 100 | n/a | |
| 27/04/15 | 100 | 100 | 100 | 99.0 | 99.0 | 100 | 100 | Argus problem - job sumbissions failed for a while. |
| 28/04/15 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
| 29/04/15 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
| 30/04/15 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
| 01/05/15 | 100 | 100 | 100 | 100 | 96.0 | 95 | 100 | Single SRM test failure. Error listing file. |
| 02/05/15 | 100 | 100 | 100 | 100 | 100 | 96 | 100 | |
| 03/05/15 | 100 | 100 | 100 | 100 | 100 | 83 | 100 | |
| 04/05/15 | 100 | 100 | 100 | 100 | 100 | 90 | 99 | |
| 05/05/15 | 100 | 100 | 100 | 52.0 | 100 | 93 | 100 | CMS CE SAM tests are failed at many sites due to an expired proxy. |
