Difference between revisions of "Tier1 Operations Report 2015-03-11"
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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 4th to 11th March 2015. | | 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 4th to 11th March 2015. | ||
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− | * | + | * The planned move to a replacement primary router that was scehdiuled on the morning of the 5th March had to be delayed (to the morning of the 12th March). |
− | + | * On Friday (6th March) around 15:00 there was a problem of high packet loss within the Tier1 network following a configuration error. This lasted around 20 minutes. | |
− | + | ||
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Revision as of 11:48, 11 March 2015
RAL Tier1 Operations Report for 11th March 2015
Review of Issues during the week 4th to 11th March 2015. |
- The planned move to a replacement primary router that was scehdiuled on the morning of the 5th March had to be delayed (to the morning of the 12th March).
- On Friday (6th March) around 15:00 there was a problem of high packet loss within the Tier1 network following a configuration error. This lasted around 20 minutes.
Resolved Disk Server Issues |
- GDSS757 (CMSDisk - D1T0) failed again early on Friday morning (27th Feb). As this server has failed multiple times it has been put back readonly and is being drained.
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.
Ongoing Disk Server Issues |
- None
Notable Changes made this last week. |
- Removed DNs from FTS3 monitoring messages
- Cap on maximum number of ALICE batch jobs raised from 3500 to 6000.
- A new Stratum-1 system for the cern.ch domain set-up.
Declared in the GOC DB |
Service | Scheduled? | Outage/At Risk | Start | End | Duration | Reason |
---|---|---|---|---|---|---|
Whole site | SCHEDULED | WARNING | 11/03/2015 10:30 | 11/03/2015 11:00 | 30 minutes | Warning on site access during firmware updates on pair of network switches. |
lcgfts3.gridpp.rl.ac.uk, | SCHEDULED | WARNING | 05/03/2015 10:00 | 05/03/2015 12:00 | 2 hours | Warning on FTS3 service during upgrade to version v3.2.32 |
Whole site | UNSCHEDULED | WARNING | 05/03/2015 07:45 | 05/03/2015 08:30 | 45 minutes | Warning following installation of a replacement network router. |
Advanced warning for other interventions |
The following items are being discussed and are still to be formally scheduled and announced. |
- Investigate problems on the primary Tier1 router. Discussions with the vendor are ongoing. (Swap with replacement unit planned for tomorrow morning, 5th March).
- Update firmware on resilient pair of switches in the Tier1 network - planned for Wednesday 11th March.
- FTS3 update planned for Thursday 5th March.
Listing by category:
- Databases:
- Switch LFC/3D to new Database Infrastructure.
- Update to Oracle 11.2.0.4
- Castor:
- Update SRMs to new version (includes updating to SL6).
- Fix discrepancies were found in some of the Castor database tables and columns. (The issue has no operational impact.)
- Update Castor to 2.1-14-latest.
- Networking:
- Resolve problems with primary Tier1 Router
- Make routing changes to allow the removal of the UKLight Router.
- Enable the RIP protocol for updating routing tables on the Tier1 routers. (Install patch to Router software).
- Fabric
- Firmware updates on remaining EMC disk arrays (Castor, FTS/LFC)
Entries in GOC DB starting since the last report. |
- None
Open GGUS Tickets (Snapshot during morning of meeting) |
GGUS ID | Level | Urgency | State | Creation | Last Update | VO | Subject |
---|---|---|---|---|---|---|---|
112166 | Green | Urgent | In Progress | 2015-03-06 | 2015-03-11 | Atlas | RAL-LCG2 DATATAPE: destination transfer errors like "This SURL does not exist in the original request" |
111699 | Green | Less Urgent | In Progress | 2015-02-10 | 2015-02-27 | Atlas | gLExec hammercloud jobs keep failing at RAL-LCG2 & RALPP |
109694 | Red | Urgent | In Progress | 2014-11-03 | 2015-03-10 | SNO+ | gfal-copy failing for files at RAL |
108944 | Red | Urgent | Waiting Reply | 2014-10-01 | 2015-03-03 | 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 |
---|---|---|---|---|---|---|---|---|
04/03/15 | 100 | 100 | 100 | 100 | 100 | 98 | 100 | |
05/03/15 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | |
06/03/15 | 100 | 100 | 96 | 100 | 96 | 98 | 92 | Tier1 network problem affected tests. |
07/03/15 | 100 | 100 | 100 | 100 | 100 | 98 | 97 | |
08/03/15 | 100 | 100 | 100 | 100 | 100 | 98 | 94 | |
09/03/15 | 100 | 100 | 100 | 100 | 100 | 100 | 93 | |
10/03/15 | 100 | 100 | 100 | 100 | 100 | 98 | 98 |