In my last post, we investigating deployments of IPv6 on the test Cluster, the 1st one of which was using SLAAC to assign addressing to hosts. Interestingly enough it worked, first time out the tin.
An IPv6 Traceroute from the web is shown below:
traceroute to 2001:630:40:ef0:230:48ff:fe5a:4b7 (2001:630:40:ef0:230:48ff:fe5a:4b7), 30 hops max, 40 byte packets
1 2001:1af8:4200:b000::1 (2001:1af8:4200:b000::1) 1.600 ms 1.813 ms 1.882 ms
2 2001:1af8:4100::5 (2001:1af8:4100::5) 1.320 ms 1.392 ms 1.465 ms
3 be11.crs.evo.leaseweb.net (2001:1af8::9) 2.587 ms 2.631 ms 2.619 ms
4 linx-gw1.ja.net (2001:7f8:4::312:1) 8.475 ms 8.466 ms 8.453 ms
5 ae1.lond-sbr4.ja.net (2001:630:0:10::151) 78.338 ms 78.388 ms 78.376 ms
6 2001:630:0:10::109 (2001:630:0:10::109) 9.900 ms 9.479 ms 9.446 ms
7 so-5-0-0.warr-sbr1.ja.net (2001:630:0:10::36) 13.320 ms 13.196 ms 13.317 ms
8 2001:630:0:10::296 (2001:630:0:10::296) 18.705 ms 18.542 ms 18.793 ms
9 clydenet.glas-sbr1.ja.net (2001:630:0:8044::206) 18.947 ms 18.931 ms 18.948 ms
10 2001:630:42:0:3e::9a (2001:630:42:0:3e::9a) 19.434 ms !X 18.214 ms !X 17.682 ms !X
The next phase of testing will be to enable a webserver to speak in both IPv4 and IPv6 using this access mechanism and then onto a Grid services .
I will post up a more detailed explanation of the mechanisms used for this soon.
Showing posts with label HEPiX. Show all posts
Showing posts with label HEPiX. Show all posts
Thursday, August 25, 2011
Tuesday, August 23, 2011
Two Stacks are better than one
Leading on from the last post, we have also re-introduced a new test cluster. This infrastructure is housed within the same rack as our old worker nodes but is completely independent of the production cluster. Supporting a Dell 8024F are 5 servers and a Dell 5000 series switch which are connected via an independent 1 gigabit fibre connection to the University's network.
The purpose of this cluster is to test IPv4/IPv6 dual stack connectivity for grid Services, the testing of switch based security mechanisms and SL6 NAT testing without fear of impacting the real cluster.
The IPv6 connectivity model testing will be in multiple phases which include:
* SLAAC
* IPv6 to IPv4 tunneling
* IPv6 Routing
This framework is designed to comply with the HEPIX IPv6 Project and to look at the possible connection models required by Tier-2s to utilise IPv6. Additionally, we will be testing a wide variety of Grid enabled applications and associated systems such as Nagios to investigate potential issues within a dual stack deployment.
More on this soon.
The purpose of this cluster is to test IPv4/IPv6 dual stack connectivity for grid Services, the testing of switch based security mechanisms and SL6 NAT testing without fear of impacting the real cluster.
The IPv6 connectivity model testing will be in multiple phases which include:
* SLAAC
* IPv6 to IPv4 tunneling
* IPv6 Routing
This framework is designed to comply with the HEPIX IPv6 Project and to look at the possible connection models required by Tier-2s to utilise IPv6. Additionally, we will be testing a wide variety of Grid enabled applications and associated systems such as Nagios to investigate potential issues within a dual stack deployment.
Tuesday, May 01, 2007
HEPiX Summary
This week I 'ave mostly been attending Spring HEPiX 2007
I've summarised below some of the things I picked up on from the talks - Both slides and the video streams are available in the DESY Indico system.
Day 1 - Site Reports
Phew. I'll write up the other days ASAP.
I've summarised below some of the things I picked up on from the talks - Both slides and the video streams are available in the DESY Indico system.
Day 1 - Site Reports
- LAL
- WN's running SL4.4 64 bit with the ability to "fix" a VO to SL3 nodes
- Evaluating LUSTRE
- Lemon/Quattor for monitoring
- Sun Thumper good.
- LAPP (French T3)
- Use GPFS/Woodcrest Blades (HP)
- Cacti / Nagios / Ganglia
- Developing own accounting tools for parsing Torque / Maui logs
- PSI.ch
- FreeNX desktops
- SL5 Live CD
- v12n - Use VMware / Eval Xen.
- Use Lustre (on Cray) and GPFS (Linux clusters)
- CASPUR
- Mix of systems - IBM P5 / 2*Opteron clusters (Infiniband / Qsnet) / NEC SX6 / HP EV7.
- GPFS / AFS / NFS
- Xen / VMware
- BNL
- 2*8500 robots using HPSS
- Linux farm is big (>4700 CPUs, 1.3PB Local disk)
- Nagios / Ganglia / Cacti
- Temp Monitors distributed in datacentre - alert to RT Tickets.
- Use both RT (helpdesk) and AT (assets) - also linked to OSG Footprints
- GSI
- OTRS Ticketing
- Debian
- 1U boxes with 16 cores/32G RAM / 4 SATA Hot Swap disks for 8K Euro
- RAL
- 2nd 8500 silo, perhaps with tape-passing interface
- CASTOR problems
- Disk problems fixed
- Network upgraded
- GridKa
- Procurement via benchmark
- How to connect 10GE to storage.
- PDSF
- HPSS
- New Building
- Blades
- ScotGrid
- Hey, We're great.
- TRIUMF
- Using BGP within the ATLAS network!
- In-Row cooling
- Dirvish / Amanda backups
- Funky Videoconference room
- INFN-T1
- GPFS
- RedEye (DIY) Monitoring System
- Disk0Tape1 is CASTOR-2, D1T0 - GPFS / StoRM, D1T1 probably CASTOR-2
- Nagios / MRTG / ntop
- IN2P3
- 8500 robot
- HPSS
- CERN
- Magnet issues
- Firewall changes (no UDP)
- Procurement via benchmark
- Clampdown on Skype / p2p
- Silent Data corruption
- SLC3 support. SLC5 tests.
- DESY
- New Machine room
- Nagios
- 8500 robot
- Request Tracker / Zope
- SLAC
- Sun BlackBox, Thumpers, 8500
Phew. I'll write up the other days ASAP.
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