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EMI Tutorial for Resource Administrators - Installation and Configuration Guide

Learn how to install and configure A-REX components, GridFTPd, Grid Manager, ARIS, and more. Manage jobs, submit to LRMS, interact with WS interface, and utilize testing clients in this comprehensive tutorial. The guide covers supported platforms and essential files locations. Get ready to optimize your resource management!

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EMI Tutorial for Resource Administrators - Installation and Configuration Guide

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  1. Installation and Configuration of A-REX Iván Márton (NIIFI) Zsombor Nagy (NIIFI)

  2. Components to be installed • GridFTPd • Grid Manager / A-REX • ARIS EMI Tutorial for Resource Administrators

  3. GridFTPd • Receives job description document and proxy-certificate • Validates proxy-certificate • Accepts the job EMI Tutorial for Resource Administrators

  4. Grid Manager / A-REX • Goes through accepted jobs, starts downloaders for requested files • Caches files and manages the cache • Executes plugins • Transforms job description to LRMS-specific shell-scripts • Submits job to LRMS (SGE, PBS/Torque, SLURM, LoadLeveler, LSF, Condor) • Regularly polls LRMS to see if jobs has completed • Finishes jobs, starts uploaders for output-files • Writes information for URLogger that reports to SGAS • Can provide WS interface to submit and manage jobs and handle related data EMI Tutorial for Resource Administrators

  5. ARIS (Arc Resource Information Service) • ARIS is the local information system • it contains information about cluster, queues, jobs • (started by the ‘grid-infosys’ init script) EMI Tutorial for Resource Administrators

  6. Tutorial environment • OS: SL5 (EMI supported) • Other supported platforms: • Fedora / Redhat • Debian / Ubuntu • Solaris • Mac OS X • Gentoo • etc. EMI Tutorial for Resource Administrators

  7. Discover your disc! • Installed software: /usr/ • Configuration files: e.g. /etc/ • Log files: e.g. /var/log/arc/ • The location of additional files is configurable: e.g. /var/spool/arc • session directory • stores working directories • control directory • job metadata (states, etc.) EMI Tutorial for Resource Administrators

  8. Clients for testing • arcproxy • creating and managing proxy certificates • arcsub • communicate with infosys • do brokering • move input files • submit jobs to cluster • arcstat • query cluster for job status • arccat • print standard output and error of job • arcget • get results of a job and clean from cluster EMI Tutorial for Resource Administrators

  9. Ready… steady… go! http://bit.ly/arc-egi Password: NA59::gf8 Survey: http://www.surveymonkey.com/s/TLQ9BHZ www.nordugrid.org nordugrid-discuss@nordugrid.org EMI Tutorial for Resource Administrators

  10. Thank you!

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