- Sans - mailman3.inf.ethz.ch

No meeting in December
by Steven Armstrong 17 Dec '10

17 Dec '10

Hi Sysadmins It seems most of us are away playing in the snow anyway so we wont organize a meeting in December. Next meeting will take place end of January - we'll send an invitation for that in the new year. Happy Holidays & don't eat too much cookies ;-) Cheers, Steven -- Steven Armstrong Institute of Computational Science, ETH Zurich IT Management & Support Universitaetsstrasse 6, CAB/H/88 8092 Zurich, Switzerland Phone: +41 44 632 25 24

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[ID#1033085] Kerberos / AD configuration documented
by Nico Schottelius 24 Nov '10

24 Nov '10

Liebe Systemadministratoren, die aktuelle Kerberos / AD-Serverliste der ID befindet sich auf https://sans.ethz.ch/services/#index11h3 Gruß, Nico -- Systems Group Sysadmin Tel: +41 (0) 44 632 76 09 D-INFK/ETH Zurich

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Slow wiki due to missing Kerberos server
by Nico Schottelius 19 Nov '10

19 Nov '10

Hello systems, sans, ID, our wiki has been pretty slow in the last weeks. The reason for that is that someone disabled the kdc 82.130.116.12 (novo.d.ethz.ch), which we are using in the krb5.conf on our wiki server sgssr240003.ethz.ch. As our Apache uses mod_krb5, every request checks for a valid ticket. Unfortunately though it seems that ID does not publish their Kerberos / AD server list nor does answer requests on that topic. That said, I removed novo.d.ethz.ch from the krb5.conf manually and the wiki runs fast again. Cheers, Nico -- Systems Group Sysadmin Tel: +41 (0) 44 632 76 09 D-INFK/ETH Zurich

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November meeting: 2010-11-24: Sysadmin nightmares
by Nico Schottelius 27 Oct '10

27 Oct '10

Good evening sysadmins, after todays fun meeting, there's a big meeting upcoming, discussing very serious issues: Your nightmares: https://sans.ethz.ch/meetings/2010-11-24/ As a lot of people are affected by topic, we would like to invite people from both sides: the consuming and providing sysadmin sides. Thus, we would like everybody on this list to forward this mail (*) to his/her providers/consumers (not end users though!), so we get a big picture and detailled information on what's going on. Cheers, Nico (*) yes, this is exactly the chain-mail principle I'm trying to use here, though not for distributing half funny jokes but a serious topic. -- Systems Group Sysadmin Tel: +41 (0) 44 632 76 09 D-INFK/ETH Zurich

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Sans-Meeting tomorrow [27.10.2010]: Have fun, sysadmins!
by Nico Schottelius 27 Oct '10

27 Oct '10

Dear sysadmin community, we had a great meeting last time, with many serious speeches. This time, we are not going to do all the serious stuff, but pull in a session of fun: Tomorrow at 15oo, we do a sans-meeting with the topic RETRO GAMING You're welcome to bring your own notebooks + emulators + whatever is still existing, including talks about your favourite game. Don't be too serious, you're still sysadmins, aren't you? Cheers, Nico p.s.: the usual meeting point cab/e/79, no website yet, but having dosbox running... -- Systems Group Sysadmin Tel: +41 (0) 44 632 76 09 D-INFK/ETH Zurich

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Dell server purchase@D-BSSE
by Palinkas Janos 08 Oct '10

08 Oct '10

Dear colleagues, Steven asked me to send you this information. We are going to buy some Dell Power Edge R815 machines at the D-BSSE. Actually we have a "project" price and are still in negotiations but the setup below would be ~12 kCHF without tax which is approx 50% of the list price. Mr. Beffa, our Dell account manager, confirmed me that if you want to participate you would get the same conditions - AFAIK even with other configurations, as long as the purchase stays ETHZ internal. However, we internally have to proceed latest next week. Best regards, j. PowerEdge R815 Rack-Gehäuse für bis zu 6x 2,5Zoll Festplatten Components 1 2HE Rack Blende (R715/R810/R815) 2 2M Rack Power Cord C13/C14 12A 1 Redundante Stromversorgung (2 Netzteile) 1100W 1 Ready Rack Gleitschienen mit Kabelführungsarm 1 2x AMD Opteron 6174 (2,2GHz, 12x512KB L2 Cache, 115W TDP, 12C) 1 Zusätzlich 2x AMD Opteron 6174 (2,2GHz, 12x512K L2 Cache, 115W TDP, 12C), Upgrade auf 4CPU 1 128GB Arbeitsspeicher für 4CPU (32x4GB Dual Rank RDIMMs) 1333MHz 2 146GB SAS 6Gbit/s 10k 2,5Zoll Festplatte Hot Plug 1 PERC H700 Integrated RAID Controller, 1GB NV Cache 1 16X DVD+/-RW ROM Drive SATA 1 iDRAC6 Enterprise mit VFlash 1GB SD-Karte 1 C3 - R1 für PERC H200/H700, Genau 2 Laufwerke 2 10GbE SR SFP+ Transceiver for Intel X520 10GbE Dual Port Server Adapter 1 Intel X520 DA2 10GbE Dual Port SFP+ Server-Adapter, Optisch, PCIe x8, EX Software 1 Dell Verwaltungskonsole DVD 1 PE R815 Elektronische Systemdokumentation und OpenManage DVD Service 1 Base Warranty 1 3Yr Basic Warranty - Next Business Day - Minimum Warranty 1 5Yr ProSupport for IT and 4hr Mission Critical __ Janos Palinkas IT Manager D-BSSE ETH Zurich Mattenstrasse 26 4058 Basel phone: ++41 61 387 31 28 mobile: ++41 79 334 6851 fax: ++41 61 387 39 94 email: janos.palinkas(a)bsse.ethz.ch web: www.bsse.ethz.ch

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Add comment and hostname field in nacctl
by Mosebach Kai 07 Oct '10

07 Oct '10

Dear Admins, Wir haben hier einen kleinen aenderungswunsch fuers nacctl. Unsere mac/windows admins arbeiten mit dem komcenter, was wir ja auch tun wollen, aber eben via shell … Der wunsch unserer mausschubser ist aber (nachvollziehbar), dass bei unseren NAC eintraegen auch der FQDN sowie das kommentarfeld genutzt wird. Dies geht im moment leider nicht via nacctl (Usage: nacctl create mac:value [isg:value currentProfile:value]) , ist aber denke ich nicht so aufwendig zu implementieren (glaub ich;). Waere super, wenn ihr das mal bei gelegenheit reincoden koenntet, Danke + Gruesse, Kai

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Possible topics for future /sans/ meetings
by Steven Armstrong 03 Oct '10

03 Oct '10

Hi all At the last meeting we talked a bit about possible topics for future meetings. Here's the list so far. - High Performance Computing, e.g. - scheduler/resource manager (e.g SGE, SLURM, Torque/Maui) - cluster file systems (e.g. Lustre, glusterfs) - Follow up on Kerberos, NFS V4, CIFS - usefull unix tools - cloud management tools - Virtualization - N-ETHZ/User Authentication, Authorization - ETH (infra)structure, environment, workflows - how is it now - how (could|should) it be Any other ideas/interests please chime in and send 'em to the list. Cheers, Steven -- Steven Armstrong Institute of Computational Science, ETH Zurich IT Management & Support Universitaetsstrasse 6, CAB/H/88 8092 Zurich, Switzerland Phone: +41 44 632 25 24

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[Sans] /sans/: Meeting #4: 2010-09-29, Monitoring & puppet follow up
by Steven Armstrong 29 Sep '10

29 Sep '10

Hi Sysadmins On Wednesday, 29th of September the next sysadmin meeting will take place! You can find more information on http://sans.ethz.ch/meetings/2010-09-29/ Hope to see you all there. Cheers & happy kernel patching ;-), Steven -- Steven Armstrong Institute of Computational Science, ETH Zurich IT Management & Support Universitaetsstrasse 6, CAB/H/88 8092 Zurich, Switzerland Phone: +41 44 632 25 24

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Call for Datacenter Management/Troubleshooting Scenarios
by Simon Peter 03 Sep '10

03 Sep '10

Hi, I am writing to the list to ask for input from real sysadmins on datacenter management and troubleshooting scenarios. The context is a research paper on a comprehensive datacenter tracing framework I am writing together with Microsoft Research Silicon Valley. The framework allows you to write concise queries that can execute over the whole datacenter and trace detailed information across all layers of the software stack down to the operating system kernel. Tracepoints are automatically deployed and trace data is automatically aggregated and stored with low overhead for (real-time) presentation. In the paper, we would like to include case studies of datacenter management and troubleshooting scenarios that really occurred and which could be done easier with such a tracing framework. Examples of cases I am looking for are (all of these really occurred): * Troubleshooting misconfigurations or software bugs. Eg. DHCP server overloaded as an unknown host in the datacenter is generating lots of traffic through a misconfigured Ethernet bridge driver. * Detecting known problems. Eg. An application periodically hangs because glibc tries to communicate with a credentials caching daemon that doesn't respond. * Analyzing the impact of changes. Eg. have to find out which applications are affected by the new kernel patch I just installed because something is running mysteriously slow. Especially cases where multiple hosts were involved and the answer wasn't obvious are interesting. If there's something really crazy that happened, I'd like to hear about it as well. I'd be very glad for some of your experiences. Thank you! Simon

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