SURAgrid Account Mgmt Tool Case Study: Kennesaw State University Graduate Research Assistant – Kennesaw State University

Overall Experience Good Approximately 3 weeks from Rocks ‘jumbo’ install to Bridge Cross-Certification Documentation fairly good Had to get a few answers from SURA support team Perl scripts are well-commented A bit of bouncing between web sites

Which Tools We Use All of them e.g. –SURA simpleCA Bundle –bridge.pl –homedir.pl –web interface –LDAP callout

KSU Starting Point Hardware –Dell PowerEdge 1855 –Intel Xeon x86_64 Software –Rocks 4.1 ‘jumbo’ DVD –CentOS –Rocks Grid Roll Zero Users Skills –5+ years experience with certificates –10+ years UNIX experience

Install Bumps in the Road Perl Open::LDAP Installation Fails –Scripts require Open::LDAP module –Solution: cpan>install Net::SSLeay gsissh prompts for password – unresolved Users made by homedir.pl –get no /etc/passwd entry –If you want to assign a password, manually edit /etc/passwd and then run pwconv

Web Interface Worked well Wasn’t sure about ‘user password’ field Sites with lots of existing users may want a bulk add feature. Right now web interface only permits 1 user add at a time.

scratch.pl - Example LDAP Extension Automates SCRATCH creation using LDAP Modified homedir.pl Perl code $search = $ldap->search( "base" => $LDAP_BASE, "scope" => "one", "filter" => "(uid=*)", "attrs" => [ "uid", "uidNumber", "gidNumber", "homeDirectory" ] );...snip… # populate SURAGRID_SCRATCH_PARENT and SURAGRID_SHARED_SCRATCH_PARENT foreach $entry ($search->entries) { $loginid = $entry->get_value("uid"); $scatchhomedir = $entry->get_value("homeDirectory"); $uid = $entry->get_value("uidNumber"); $gid = $entry->get_value("gidNumber"); next if -d "$SURAGRID_SCRATCH_PARENT/$loginid/."; &make_scratchhomedir($scatchhomedir, $loginid, $uid, $gid); }

scratch.pl - continued Automates scratch directory creation on head and compute nodes Uses Rocks-specific ‘cluster-fork’ python script

Additional Feedback Unclear if current verification steps match typical grid use –Current verification: gsissh / globus-url-copy –Versus, typical use: myproxy and portal Automate installation filesystem path setting Perl scripts and ldap_authz_callout-0.2.tar.gz Code repository –Promote sharing of locally developed improvements and enhancements –Version control Suggest –user under which homedir.pl should run –CRON entries Unclear if when using Globus LDAP callout if the text “add your DN to /etc/grid-security/grid-mapfile” still applies.

Questions or comments? For more information…

Acct Mgmt Web - Page 1

Acct Mgmt Web - Page 2

Web Interface – Page 3

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