The Globus Institute Information Service (GIIS) is used to locate resources that are part of the Grid. It contains:
A GIIS runs on a single machine and acts as a central repository for resource information at the site. To this end, it runs a LDAP server with a `shell' back end. The shell back end consists of of scripts to retreive information from per-resource GRIS (GRid Information Service) services. It relays this information to the requesting LDAP client. The GIIS will temporatily cache this information on a per-host basis. The GRIS specifies the time-to-live for each piece of information.
The GRIS service runs on every resource and listens on port 2135.
This GRIS will spawn a shell scripts (grid-info-*) to collect
system information: architecture, current load, network
connectivity, etc.
The GIIS and GRIS will log information to
var/grid-info-system.log. It will not write to
syslog.
PS: The instantaneous load on the GIIS (and GRISs) may become
quite high, most of the processor time being spent in system
and iowait cycles.