In the directory FULL_TAG_DIRECTORY/examples , a set of templates of the files needed to configure a default, very basic, LCG site can be found.
If your site has a more complex configuration (e.g. you use disk servers or have more than one batch system) then node configuration files will have to be modified accordingly. Please refer to the LCFG objects man pages to find out how to do this.
It's worth noticing explicitly that the site configuration template site-cfg.h.template contains only example values for the various parameters. It needs extensive editing before being actually usable at your site. Of course, a general prerequisite for site configuration is to have a clear view of how you want to organize your LCG site.

STEP DESCRIPTION

• Create a directory, referred from now on as LOCAL_DIR , where to keep your local configuration files.

    
  > mkdir <LOCAL_DIR> 
        \end{vebatim} 
  \item from the tag directory make a copy of the up-to-date version of the 
        templates for the configuration files and rename them from 
        \em xxx.h.template \em to \em xxx.h \em into the $<$LOCAL\_DIR$>$
         \begin{verbatim} 
  > cp <FULL_TAG_DIRECTORY>/examples/* <LOCAL_DIR>
  > cp <LOCAL_DIR>/xxx.h.template <LOCAL_DIR>/xxx.h
  > ...
  

• cd to LOCAL_DIR

• Edit the file cfgdir-cfg.h
  Uncomment the define line of CFGDIR macro, after modifying the directory path in

  
  #define CFGDIR "<FULL_TAG_DIRECTORY>/source
  

  WARNING: CFGDIR has to be defined starting with a " but then the string must be left open and must be closed when the macro is used to define a full file name, e.g.

  
  #include CFGDIR/macros-cfg.h"
  

  Be very careful not to leave blank spaces after the last character in the definition of CFGDIR. Opening the cfgdir-cfg.h with 'vi' and moving the cursor on the right, it has to stay on the last character (the 'e' in the example)
• Edit the file local-cfg.h
  Unless you have changed the position of the rpmlist directory (see and ) you do not need to make any change in this file for this configuration example.

• Edit the file private-cfg.h
  You must add here your own root password or you will not be able to log on your nodes as root
  Encode your desired root password in MD5 format by the command

  
  > openssl passwd -1
  

  you will be required to enter the new password and you will be given an encrypted value in output.
  Copy the output encrypted password in the file private-cfg.h modifying the +auth.rootpwd attribute as follows:

  
  +auth.rootpwd <Your_encrypted_root_password_here>
  

• Edit the file site-cfg.h
  For this simple configuration example, you can leave the template unchanged and set up just the macros in the section 'COMMON SITE DEFINITIONS' of the file. The template assumes you want to run the PBS batch system without sharing the /home directory between the CE and all the WNs. This is the recommended setup.
  Namely, the macros to change are:

  
  #define GRID_TRUSTED_BROKERS "<Subject-of-the-RB-host-certificate>"
  
  Note: the host certificate is stored, by default, in the file 
        /etc/grid-security/hostcert.pem on the machine
        
  #define CE_HOSTNAME             <ComputingElement hostname>
  #define SE_HOSTNAME             <StorageElement hostname>
  #define SITE_LOCALDOMAIN        <local domain>
  #define SITE_MAILROOT           <address-to-send-root-mail>
  #define SITE_ALLOWED_NETWORKS   <list-of-comma-separated-network-addresses>
  #define SITE_GATEWAYS           <default-gateway>
  #define SITE_NAMESERVERS        <list-of-space-separated-dne-server>
  #define SITE_NETMASK            <net-mask>
  #define SITE_NETWORK            <site-network-address>
  #define SITE_BROADCAST          <site-broadcast-address>
  #define SITE_NTP_HOSTNAME       <NTP-time-server-hostname>
  #define SITE_TIMEZONE           <time-zone>
  #define SITE_NAME_              <site-name-for-the-information-server>
  #define SITE_EDG_VERSION        <current-tag-name>
  #define SITE_INSTALLATION_DATE_ <installation-date-YYYYmmDDhhmissZ>
  #define SITE_LCFG_SERVER        <LCFGng-server-hostname>
  #define SITE_WN_HOSTS           <space-separated-list-of-WN-hostnames>
  #define SITE_GIIS               <site-giis-name-for-the-information-server>
  #define SITE_BDII_HOST          <BDII-hostname>
  #define SITE_BDII_PASSWD        \"<BDII-encrypted-root-passwd>\"
  #define SITE_BDII_PASSWD_PLAIN  <BDII-plain-passwd>
  #define SITE_BDII_URL           <url-of-the-new-BDII-configuration-file>
  

  EXAMPLE

     
  > mkdir /root/source/LCG2_SIMPLE_SITE_040419
  > cp /root/tags/LCG-2_0_0/examples/*.template \
                     /root/source/LCG2_SIMPLE_SITE_040419 
  > cd /root/source/LCG2_SIMPLE_SITE_040419 
  > cp cfgdir-cfg.h.template cfgdir-cfg.h
  > cp local-cfg.h.template local-cfg.h
  > cp private-cfg.h.template private-cfg.h
  > cp site-cfg.h.template site-cfg.h
  
  > vi cfgdir-cfg.h
  -------------------------------------------
  #define CFGDIR "/root/tags/LCG-2_0_0/source
  ------------------------------------------- 
  > openssl passwd -1
  Password: new_root_password
          $1$8eKiuqo2$eZI/zygW6chJ7zDkVYIDn/
  
  > vi private-cfg.h
  -------------------------------------------
  +auth.rootpwd $1$8eKiuqo2$eZI/zygW6chJ7zDkVYIDn/
  -------------------------------------------
  
  > vi site-cfg.h
  -------------------------------------------
  ...
  #define GRID_TRUSTED_BROKERS "/O=Grid/O=CERN/OU=cern.ch/CN=host/lxshare0410.cern.ch"
  ...
  #define CE_HOSTNAME             adc0025.cern.ch
  #define SE_HOSTNAME             adc0016.cern.ch
  #define SITE_LOCALDOMAIN        cern.ch
  #define SITE_MAILROOT           Antonio_Retico@cern.ch
  #define SITE_ALLOWED_NETWORKS   127.0.0.1, 137.138., 128.141.
  #define SITE_GATEWAYS           137.138.1.1
  #define SITE_NAMESERVERS        137.138.16.5 137.138.17.5
  #define SITE_NETMASK            255.255.0.0
  #define SITE_NETWORK            137.138.0.0
  #define SITE_BROADCAST          137.138.255.255
  #define SITE_NTP_HOSTNAME       ip-time-1.cern.ch
  #define SITE_TIMEZONE           Europe/Zurich
  #define SITE_NAME_              LCG2-SIMPLE-TEST-SITE
  #define SITE_EDG_VERSION        LCG-2_0_0beta
  #define SITE_INSTALLATION_DATE_ 20040419115700Z
  #define SITE_LCFG_SERVER        adc0013.cern.ch
  #define SITE_WN_HOSTS           adc*.cern.ch
  #define SITE_GIIS               lcg2manualtestlcfg
  ...
  #define SITE_BDII_HOST         adc0009.cern.ch
  #define SITE_BDII_PASSWD       \"{SSHA}z2q23+xm9n7MFj1l+T9nYUAO27TtCyUH\"
  #define SITE_BDII_PASSWD_PLAIN nevertotell
  #define SITE_BDII_URL          http://grid-deployment.web.cern.ch/ \
                                     grid-deployment/gis/lcg2-bdii-update.conf
  ...