Presentation on theme: "24th May 2004Hepix Edinburgh - Oxford Site Report1 Oxford University Particle Physics Site Report Pete Gronbech Systems Manager."— Presentation transcript:
24th May 2004Hepix Edinburgh - Oxford Site Report1 Oxford University Particle Physics Site Report Pete Gronbech Systems Manager
24th May 2004Hepix Edinburgh - Oxford Site Report2
24th May 2004Hepix Edinburgh - Oxford Site Report3 Particle Physics Strategy The Server / Desktop Divide Win 2K PC Linux System Desktops Servers General Purpose Unix Server Group DAQ Systems Mail Server Web Server Windows File Server Win 2K PC Win XP PC Approx 200 Windows 2000 Desktop PCs with Exceed used to access central Linux systems
24th May 2004Hepix Edinburgh - Oxford Site Report4 Central Physics Computing Services l E-Mail hubs n In last year 7.3M messages were relayed, 73% rejected and 5% were viruses. n Anti-virus and anti-spam measures increasingly important in email hubs. Some spam inevitably leaks through and clients need to deal with this in a more intelligent way. l Windows Terminal Servers n Use is still increasing 250 users in last three months out of 750 staff/students. Now Win2k and 2003. n Introduced an 8 CPU server (TermservMP). Much more powerful system but still awaiting updated versions of some applications which will run properly on OS. l Web / Database n New web server (Windows 2003) in service. n New web applications for lecture lists, Computer inventory, admissions and finals l Exchange Servers n Running two new servers using Exchange 2003 running on Windows server 2003. Much better Web interface, support for mobile devices (oma) and for tunnelling through firewalls. l NFS gateway n Runs on windows file server, mounts linux disks and makes them available to windows users via windows DFS. Windows account name mapped onto linux username. Will replace Samba. l Desktops n Windows XP pro is default OS for new desktops and laptops.
24th May 2004Hepix Edinburgh - Oxford Site Report5 Linux / Unix Systems l Central Unix systems are Linux based n Red Hat Linux 7.3 is the standard n Treat Linux as just another Unix and hence a server OS to be managed centrally. n Wish to avoid badly managed desktop PCs running Linux. l Linux based file server (April 2002) l General purpose Linux server (August 2002) l Batch farm installed (Autumn 02, Autumn 03) l Solaris 8 systems used for Electronics CAD
24th May 2004Hepix Edinburgh - Oxford Site Report6 pplx1morpheus pplxfs1pplxgen pplx2 1Gb/s ppcresst1ppcresst2 ppatlas1atlassbc ppminos1ppminos2 gridtbwn01 pptb01 pptb02 Grid Development pplx3 CDF minos DAQ Atlas DAQ cresst DAQ General Purpose Systems tblcfgsece RH 7.3 Fermi 7.3.1 RH 7.3 Fermi 7.3.1 PBS Batch Farm 4*Dual 2.4GHz systems RH 7.3 Autumn 2002 4*Dual 2.4GHz systems RH 7.3 Autumn 2003 matrix 7.3.1 LCG2 7.3.1 LCG2 Oxford Tier 2 - LCG2 Summer 2004
24th May 2004Hepix Edinburgh - Oxford Site Report7 The Linux File Server: pplxfs1 8*146GB SCSI disks Dual 1GHz PIII, 1GB RAM
24th May 2004Hepix Edinburgh - Oxford Site Report8 New Eonstor IDE RAID array added in April 04. 16* SATA 250GB disks gives approx 4TB for around £6k. This unit was supplied by Sweet Valley, but is also available from transtec. The controller is from Infortrend. This is our second foray into IDE storage. So far so good.
24th May 2004Hepix Edinburgh - Oxford Site Report9 General Purpose Linux Server : pplxgen pplxgen is a Dual 2.2GHz Pentium 4 Xeon based system with 2GB ram. It is running Red Hat 7.3 It was brought on line at the end of August 2002. Provides interactive login facilities for code development and test jobs. Long jobs should be sent to the batch queues. Up to 50 users. Memory to be upgraded to 4GB next week.
24th May 2004Hepix Edinburgh - Oxford Site Report10 PP batch farm running Red Hat 7.3 with Open PBS can be seen below pplxgen This service became fully operational in Feb 2003. Additional 4 worker nodes were installed in October 2003. These are 1U servers and are mounted at the top of the rack. Miscellaneous other nodes bring a total of 21 cpus available to PBS.
24th May 2004Hepix Edinburgh - Oxford Site Report11 http://www-pnp.physics.ox.ac.uk/ganglia-webfrontend-2.5.4/
24th May 2004Hepix Edinburgh - Oxford Site Report12 CDF Linux Systems Morpheus is an IBM x370 8 way SMP 700MHz Xeon with 8GB RAM and 1TB Fibre Channel disks Installed August 2001 Purchased as part of a JIF grant for the CDF group Runs Fermi Red Hat 7.3.1 Uses CDF software developed at Fermilab and Oxford to process data from the CDF experiment.
24th May 2004Hepix Edinburgh - Oxford Site Report13 Approx 7.5 TB for SCSI RAID 5 disks are attached to the master node. Each shelf holds 14 * 146GB disks. These are shared via NFS with the worker nodes. OpenPBS batch queuing software is used. Second round of CDF JIF tender: Dell Cluster - MATRIX 10 Dual 2.4GHz P4 Xeon servers running Fermi Linux 7.3.1 and SCALI cluster software. Installed December 2002
24th May 2004Hepix Edinburgh - Oxford Site Report14 Plenty of space in the second rack for expansion of the cluster. Additional Disk Shelf with 14*146GB plus an extra node was installed in Autumn 2003.
24th May 2004Hepix Edinburgh - Oxford Site Report15 Oxford Tier 2 centre for LHC Two racks each containing 20 Dell dual 2.8GHz Xeons with SCSI system disks. Total of 80 CPUs. 1.6TB SCSI disk array in each rack. Systems will be loaded with LCG2 software. SCSI disks and Broadcom Gigabit Ethernet causes some problems with installation. Slow progress being made.
24th May 2004Hepix Edinburgh - Oxford Site Report16 Problems of Space, Power and Cooling. Second rack currently temporarily located in theoretical physics computer room. A proposal for a new purpose built computer room on Level 1 (underground) in progress. False floor, large Air conditioning units and power for approx 20-30 racks to be provided. 1200W/sq m max air cooling, a rack full of 1U servers can create 10KW of heat. Water cooling??
24th May 2004Hepix Edinburgh - Oxford Site Report17 OLD Grid development systems. EDG Test bed setup, currently 2.1.13
24th May 2004Hepix Edinburgh - Oxford Site Report18 Tape Backup is provided by a Qualstar TLS4480 tape robot with 80 slots and Dual Sony AIT3 drives. Each tape can hold 100GB of data. Installed Jan 2002. Netvault 7.1 Software from BakBone is used, running on morpheus, for backup of both cdf and particle physics systems. Main userdisks backed up every weekday night data disks not generally backed up BUT weekly backups to OUCS HFS service provide some security.
Physics Backbone Upgrade to Gigabit Autumn 2002 desktop Server switch Physics Firewall Physics Backbone Switch 1Gb/s 100Mb/s Particle Physics desktop 100Mb/s 1Gb/s 100Mb/s Clarendon Lab 1Gb/s Linux Server Win 2k Server Astro 1Gb/s Theory 1Gb/s Atmos 1Gb/s
24th May 2004Hepix Edinburgh - Oxford Site Report21 Network l Gigabit network installed for the physics backbone. l Most PP servers are now interconnected via gigabit. l Many switches have been upgraded to provide 100 mpbs to almost every port with gigabit uplinks to the core network. l Connection to campus remains at 100 mbps, campus upgrade to 10Gbps core not expected till end of 2004. l Virtual Private Network (VPN) server getting increased usage, overcomes problems getting some protocols through firewalls. Allows authorised users to get into the Physics network from remote sites, but it has its own security risks…..
24th May 2004Hepix Edinburgh - Oxford Site Report22 Network Security l Constantly under threat from worms and viruses. Boundary Firewalls dont solve the problem entirely as people bring infections in on laptops. l New firewall based on stateful inspection. Policy is now `default closed`. Some teething problems as we learnt what protocols were required but there has been a very significant improvement in security. l Main firewall passes average 5.8GB/hour (link saturates at peak). Rejects 26,000 connection per hour (7 per second). Mischievous connects rejected 1500/hour, one every 2.5 secs. During blaster worm this reached 80/sec. l Additional firewalls installed to protect the Atlas construction area and to protect us from attacks via dialup or VPN. l Need better control over how laptops access our network. Migrating to a new Network Address Translation system so all portables connect through a managed `gateway`. l Have made it easier to keep Anti-Virus software (Sophos) uptodate via simply connecting to a web page. Important that everyone managing their own machines takes advantage of this. Very useful for both laptops and home systems l Keeping OSs patched is a major challenge. Easier when machines are all inside one management domain but is still very time consuming. Must compare to perhaps 1-few man months of IT support staff effort to clean out a successful worm from the network.
24th May 2004Hepix Edinburgh - Oxford Site Report23 Goals for 2004 (Computing) l Continue to improve Network security n Need better tools for OS patch management n Need users to help with their private laptops –Use automatic updates (e.g. Windows Update) –Update Antivirus software regularly n Segment the network by levels of trust n All the above without adding an enormous management overhead ! l Reduce number of OSs n Remove last NT4 machines and exchange 5.5 n Digital Unix and VMS very nearly gone. n Standardising on RH 7.3. l Supporting laptops by having a standard clone and recommend IBM laptops. l What version of Linux to run ? Currently all 7.3 but what next? l Looking into Single Sign On for Particle Physics systems