1. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 Ariel Garcia - IWR LCG Cluster Installation Forschungszentrum Karlsruhe in der Helmholtz-Gemeinschaft

2. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 Grid cluster installation Grid nodes – LCG2 – Computing Element + Worker Nodes – Storage Element – User Interface – other “TB-wide” nodes: – Resource Broker – Information Catalog – Replica Location Server – VO server

3. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 Installation methods Manual installation (fully documented, release-notes & manual-install cvs folder) Automated installations – LCFG (EDG/LCG standard) – NPACI tools for WNs (GridKA) – Root-less WN's

4. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 Manual installation Common installation – install RH7.3 (SUSE, MD,... ) – install LCG2 packages – configure the node: ld.so.conf, paths, copy/create config files set up Globus NTPd for time sync proceed with node specific configuration

5. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 Manual installation UI – configure ReplicaMan – configure WorkLoad WN – create pool users – (mount /home) – configure PBSmom – ssh keys – configure ReplicaMan – configure WorkLoad CE – create pool & special users – create & fill in gridmapfile – configure LCAS (allowed users) – configure MDS's – start gatekeeper & gridftp – start locallogger – ssh keys – (NFS export shared /home) – configure PBS – install host certificate

6. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 LCFG Local ConFiGuration system LCFG LCFG v.2 LCFGng Edinburgh University EU DataGrid... Quattor (LCG2 port)

7. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 LCFG LCFG architecture PERL scripts /* UI template */ #define HOSTNAME my-ui #include site-cfg.h #include common/lcg2/redhat73-cfg.h #include redhat73-local-cfg.h +hardware.mod_eth0 alias eth0 e1000 #include common/lcg2/UI-cfg.h

8. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 /* UI template */ #define HOSTNAME my-ui #include site-cfg.h #include common/lcg2/redhat73-cfg.h #include redhat73-local-cfg.h +hardware.mod_eth0 alias eth0 e1000 #include common/lcg2/UI-cfg.h Source & rpmlist files Sources /* redhat73-cfg.h */ EXTRA(auth.groups) sshd auth.groupid_sshd 74 EXTRA(auth.users) sshd auth.userhome_sshd /var/sshd auth.usergroup_sshd sshd auth.usershell_sshd /bin/false auth.useruid_sshd 74

9. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 Source & rpmlist files RPMlists /* UI-rpm */ #include common/lcg2/BASE-rpm.h... #include common/lcg2/RM-client-rpm.h... #include local-rpm.h /* RM-client-rpm.h */ #include java-utils.h #include ROS-client-rpmh... xerces-1.7.0-* edg-replica-manager-1.6.13-1 edg-replica-manager-config-1.6.13-1

10. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 LCFG node installation schema LCFG server client nodes DHCP TFTP NFSd Apache NFSd Apache Kernel rc-install LCFG (start) PXE BIOS /install-root mount bootloader, kernel IP # LCFG server LCFG modules updaterpms... auth fstab profile.xml RPM lists & RPMs LCFG (end) ACK

11. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 Installation steps Set up server Check out release files from CVS – source – source templates – rpmlist – (rpmlist templates) Edit templates Compile profiles Download the req'd RPMs Start the nodes with PXE enabled / floppy Do a few manual config steps (PBS, host certificates) :-)

12. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 Comments LCFG somewhat inflexible but powerful – cpp #include's, #define's, #ifdef's allow for a hierarchical structure with common files – new PERL scripts can be added – whole config in CVS User-Mode-Linux LCFG server => avoid physical server

13. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 Issues DNS entries for the nodes (private also) NTP not running => Globus GSI fails => everything fails :-) LCFG paths for RPMs/profiles/etc are “fragile” default works, care required when changing Must update server's RPMs (object-defaults) if new config variables

14. Ariel Garcia LCG cluster installation, EGEE training, 6.7.2004 Resources Cluster Installation in CrossGrid (LCFG, server + nodes) http://cgi.di.uoa.gr/~xgrid/cgfiles/LCFGng_v2.0b1.pdf LCG2 CVS & Release Notes http://lcgdeploy.cvs.cern.ch/cgi-bin/lcgdeploy.cgi/lcg2/ Manual installation notes in subfolder: manual-install UML LCFG server http://gridportal.fzk.de/websites/crossgrid/site-fzk/UML- LCFG.txt