Difference between revisions of "Tier1 Operations Report 2018-08-20"
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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. | ||
|} | |} | ||
− | * | + | * GROUP_CMS_LIMIT = 4000 |
+ | * GROUP_ATLAS_LIMIT = 8000 | ||
<!-- ******************End Limits On Batch System Jobs***************** -----> | <!-- ******************End Limits On Batch System Jobs***************** -----> | ||
<!-- ****************************************************************** -----> | <!-- ****************************************************************** -----> | ||
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! Reason | ! Reason | ||
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+ | * 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: green;" | 136757 | ||
+ | | mice | ||
+ | | in progress | ||
+ | | less urgent | ||
+ | | 17/08/2018 | ||
+ | | 21/08/2018 | ||
+ | | Other | ||
+ | | Missing lsc files for mice VO on lfc.gridpp.rl.ac.uk ? | ||
+ | | EGI | ||
|- | |- | ||
| style="background-color: green;" | 136701 | | style="background-color: green;" | 136701 | ||
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| very urgent | | very urgent | ||
| 14/08/2018 | | 14/08/2018 | ||
− | | | + | | 21/08/2018 |
| File Transfer | | File Transfer | ||
| background of transfer errors | | background of transfer errors | ||
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| WLCG | | WLCG | ||
|- | |- | ||
| style="background-color: green;" | 136366 | | style="background-color: green;" | 136366 | ||
| mice | | mice | ||
− | | | + | | in progress |
| less urgent | | less urgent | ||
| 25/07/2018 | | 25/07/2018 | ||
− | | | + | | 20/08/2018 |
| Local Batch System | | Local Batch System | ||
| Remove MICE Queue from RAL T1 Batch | | Remove MICE Queue from RAL T1 Batch | ||
| EGI | | EGI | ||
|- | |- | ||
− | | style="background-color: | + | | style="background-color: orange;" | 136199 |
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| lhcb | | lhcb | ||
| in progress | | in progress | ||
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| top priority | | top priority | ||
| 10/07/2018 | | 10/07/2018 | ||
− | | | + | | 21/08/2018 |
| CMS_AAA WAN Access | | CMS_AAA WAN Access | ||
| Issues reading files at T1_UK_RAL_Disk | | Issues reading files at T1_UK_RAL_Disk | ||
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! Scope | ! Scope | ||
|- | |- | ||
− | | | + | | 136655 |
− | | | + | | lhcb |
| verified | | verified | ||
| less urgent | | less urgent | ||
− | | | + | | 10/08/2018 |
− | | | + | | 15/08/2018 |
− | | | + | | File Access |
− | | | + | | Missing File At RAL |
− | | | + | | WLCG |
|- | |- | ||
− | | | + | | 136460 |
− | | | + | | cms |
| closed | | closed | ||
− | | | + | | urgent |
− | | | + | | 30/07/2018 |
− | | | + | | 15/08/2018 |
− | | | + | | CMS_Data Transfers |
− | | | + | | Transfers failing to RAL_Buffer |
| WLCG | | WLCG | ||
|- | |- | ||
− | | | + | | 136427 |
− | | | + | | atlas |
| closed | | closed | ||
| urgent | | urgent | ||
− | | | + | | 28/07/2018 |
− | | | + | | 13/08/2018 |
− | | | + | | File Transfer |
− | | | + | | UK RAL-LCG2: Transfer errors as destination |
| WLCG | | WLCG | ||
|- | |- | ||
− | | | + | | 136408 |
− | | | + | | cms |
− | | | + | | closed |
− | | | + | | urgent |
− | | | + | | 27/07/2018 |
− | | | + | | 15/08/2018 |
− | | | + | | CMS_Data Transfers |
− | | | + | | missing files at RAL |
− | | | + | | WLCG |
|} | |} | ||
<!-- **********************End Availability Report************************** -----> | <!-- **********************End Availability Report************************** -----> | ||
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! Comments | ! Comments | ||
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! Day !! Atlas HC !! CMS HC !! Comment | ! Day !! Atlas HC !! CMS HC !! Comment | ||
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− | | 2018-08- | + | | 2018-08-13 || 0 || 0 || |
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− | | 2018-08- | + | | 2018-08-14 || 0 || 0 || |
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− | | 2018-08- | + | | 2018-08-15 || 0 || 0 || |
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− | | 2018-08- | + | | 2018-08-16 || 0 || 0 || |
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− | | 2018-08- | + | | 2018-08-17 || 76 || 60|| |
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− | | 2018-08- | + | | 2018-08-18 || 100 || 100|| |
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− | | 2018-08- | + | | 2018-08-19 || 100 || 100 || |
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− | | 2018-08- | + | | 2018-08-20 || 100 || 100 || |
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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;" | Notes from Meeting. | | 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;" | Notes from Meeting. | ||
|} | |} | ||
− | * | + | * The recent problems with Echo were discussed. A summary is also in the Operations report. Several points: |
+ | * Current situation is that we have “production” access running | ||
+ | * Atlas and CMS have upper limits on batch jobs about equal to pledge. | ||
+ | * The additional memory for the Dell storage nodes has arrived. This will be added – at least initially in a rolling upgrade. However, it is expected this may take up to something like 2 weeks. (At which point we expect to be able to give full access to Echo). Discussions on the best way to do the memory upgrades is ongoing. | ||
+ | * Before the problem we had noted that the LHCb files came from Castor in a “bursty” way. It was suggested last week that we limit the FTS to smooth out this burstiness. | ||
+ | * When discussing GGUS tickets: LHCb are seeing some file transfer failures between worker nodes and Castor. This to be escalated. | ||
+ | * The requirement for us to be able to easily contact all users of Echo in the event of a problem was noted. |
Latest revision as of 13:24, 22 August 2018
RAL Tier1 Operations Report for 20th August 2018
Review of Issues during the week 13th August to the 20th August 2018. |
- The upgrade of Echo was completed successfully on Thursday (16/8/18), with a greatly reduced memory usage. The cluster was allowed to recover overnight. Everything appeared to be working well on the Friday (17/8/18), and there is currently no evidence of data loss. We therefore ended the downtime at Friday 12:00 UTC (17/8/18). As a precaution for the weekend, we limited the ATLAS (and CMS), quota on our batch farm to 50% of its nominal amount. Assuming we encounter no problems we intend to lift this on Monday (20/8/18).
Current operational status and issues |
- The new siny O2 SIM for the SMS service has been delivered and installed
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. |
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 |
---|---|---|---|---|---|---|---|---|
136757 | mice | in progress | less urgent | 17/08/2018 | 21/08/2018 | Other | Missing lsc files for mice VO on lfc.gridpp.rl.ac.uk ? | EGI |
136701 | lhcb | in progress | very urgent | 14/08/2018 | 21/08/2018 | File Transfer | background of transfer errors | WLCG |
136366 | mice | in progress | less urgent | 25/07/2018 | 20/08/2018 | Local Batch System | Remove MICE Queue from RAL T1 Batch | EGI |
136199 | lhcb | in progress | very urgent | 18/07/2018 | 07/08/2018 | File Transfer | Lots of submitted transfers on RAL FTS | WLCG |
136028 | cms | in progress | top priority | 10/07/2018 | 21/08/2018 | CMS_AAA WAN Access | Issues reading files at T1_UK_RAL_Disk | 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 |
---|---|---|---|---|---|---|---|---|
136655 | lhcb | verified | less urgent | 10/08/2018 | 15/08/2018 | File Access | Missing File At RAL | WLCG |
136460 | cms | closed | urgent | 30/07/2018 | 15/08/2018 | CMS_Data Transfers | Transfers failing to RAL_Buffer | WLCG |
136427 | atlas | closed | urgent | 28/07/2018 | 13/08/2018 | File Transfer | UK RAL-LCG2: Transfer errors as destination | WLCG |
136408 | cms | closed | urgent | 27/07/2018 | 15/08/2018 | CMS_Data Transfers | missing files at RAL | WLCG |
Availability Report |
Target Availability for each site is 97.0% | Red <90% | Orange <97% |
Day | Atlas | Atlas-Echo | CMS | LHCB | Alice | OPS | Comments |
---|---|---|---|---|---|---|---|
2018-08-13 | 100 | 100 | 0 | 100 | 100 | 100 | |
2018-08-14 | 100 | 100 | 0 | 100 | 100 | 100 | |
2018-08-15 | 100 | 100 | 0 | 100 | 100 | 100 | |
2018-08-16 | 100 | 100 | 0 | 100 | 100 | 100 | |
2018-08-17 | 100 | 100 | 60 | 100 | 100 | 100 | |
2018-08-18 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-08-19 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-08-20 | 100 | 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 |
---|---|---|---|
2018-08-13 | 0 | 0 | |
2018-08-14 | 0 | 0 | |
2018-08-15 | 0 | 0 | |
2018-08-16 | 0 | 0 | |
2018-08-17 | 76 | 60 | |
2018-08-18 | 100 | 100 | |
2018-08-19 | 100 | 100 | |
2018-08-20 | 100 | 100 |
Key: Atlas HC = Atlas HammerCloud (Queue RAL-LCG2_UCORE, Template 841); CMS HC = CMS HammerCloud
Notes from Meeting. |
- The recent problems with Echo were discussed. A summary is also in the Operations report. Several points:
- Current situation is that we have “production” access running
- Atlas and CMS have upper limits on batch jobs about equal to pledge.
- The additional memory for the Dell storage nodes has arrived. This will be added – at least initially in a rolling upgrade. However, it is expected this may take up to something like 2 weeks. (At which point we expect to be able to give full access to Echo). Discussions on the best way to do the memory upgrades is ongoing.
- Before the problem we had noted that the LHCb files came from Castor in a “bursty” way. It was suggested last week that we limit the FTS to smooth out this burstiness.
- When discussing GGUS tickets: LHCb are seeing some file transfer failures between worker nodes and Castor. This to be escalated.
- The requirement for us to be able to easily contact all users of Echo in the event of a problem was noted.