KOLKATA Grid Tier-2 Centre BACK UP SLIDES Vikas S Singhal, V VECC, I INDIA
KOLKATA Grid Tier-2 Centre AliEn + LCG services WMS JA File catalogue JA JA SE LFN GUID Meta CM data LCG CE CE Job CREAM FTD TaskQueue CE Manager Proxy Job renewal Broker Site A Jobs Packman BDII MonALISA Splitting Expired Zombies Priorities Merging Site B CE Central services Job optimizers MonALISA Site services Packman SE LCG services FTD
KOLKATA Grid Tier-2 Centre Xrootd Architecture Global redirector (not in picture) – intra-site storage collaboration Redirector A (Head Node) open file X Redirectors go to C Cache file Who has file X? 2 nd open X B location go to C o p e n f i l e X C CERN Global Data Servers Redirector Kolkata Storage Redirctor sees all servers as xrootd data servers All storages are on WAN 3
KOLKATA Grid Tier-2 Centre Bandwidth Tests 950Mbps Bandwidth Between Kolkata and Kolkata-cream
KOLKATA Grid Tier-2 Centre Software Development work � Developing Monitoring software with ALICE-Grid team. � Developed LCG VOBOX test suite for SAM environment with proper documentation. � SAM Monitoring Test Suite Successfully implemented and running since 2007. � Developed VOBOX test for Nagios Monitoring environment. � Implemented on the actual system and running in Testing Mode. � Cream Test Suite is under development. Vikas S Singhal, V VECC, I INDIA
KOLKATA Grid Tier-2 Centre Cabling Arrangement Do Cabling in proper manner. Label the cables. Make a logical diagram. Temporarily things will harmful for maintenance. Proper cabling help many folds to debug the problem. Use different Netmask (Different network zone) will reduce packet broadcasting. ping, traceroute, etc command will help to find out the network or cabling related problem . Remove KVM from each individual server and try to manage remotely.
KOLKATA Grid Tier-2 Centre Expectations from System Administrator GRID site should run Successfully. GRID site should be UP and Running. GRID site availability and reliability should be more than 99%. GRID site should perform as per SLAs. GRID site should provide local computing power to Tier3 users. Vikas S Singhal, V VECC, I INDIA
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