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Configuring Xprint V7.0 Administering hosts
As a guideline, experience has shown that there is a practical limit of 50
potential masters/slave hosts in a single domain. If there are too many potential
master/slave hosts, it is difficult to keep all the databases updated. If more than
50 hosts are needed then parasite hosts can be defined, or the domain can be
divided into a number of smaller domains.
Parasite hosts import the database from their supporting host (potential master
or slave) by means of a file sharing utility (e.g. NFS) which needs to be set up
by the administrator. Parasite hosts depend on the supporting hosts, as Xprint
V7.0 cannot run on the parasite if it hasn’t been started on the supporting host.
If you divide the original domain into several smaller domains, printers that are
now in a different domain can be accessed by prefixing their names with a
gateway name. If the devices must be accessed with the same name from every
host, independently of which host they belong to, then this can be achieved by
replicating the definition of the network devices in each domain. A physical
printer can then be defined with the same logical name in each network. A user
can then access the printer by using this name from any host in the system
Procedure
Once at least the primary master host is defined, you can add all the other
systems to Xprint V7.0. The order in which you configure them also determines
the order of the host hierarchy. If one computer is entered after another
computer it also ranks below this one in the hierarchy (see section “Xprint V7.0
objects” on page 9).
To add a new host to the Xprint V7.0 configuration, you must perform steps on
both the active host and the host to be added. First the new host must be regis-
tered in the existing Xprint V7.0 configuration, then it can import the Xprint V7.0
database and become part of the Xprint V7.0 network.
To configure a new host, proceed as follows:
● Log in to an active host. If the Xprint V7.0 administrator is defined as a user
there, log in as the Xprint V7.0 administrator, otherwise as root.
● Enter the following command to add the new host to the database:
xpadd -hos host_name -re host_type [-sh supporting_host]
where host_name is the name of the relevant host and host_type the value you
have entered in the worksheet. The option -re host_type (re stands for
responsibility) may be omitted for potential masters. If the value PARASITE is
specified for host_type, the value supporting_host for -sh specifies on which
system the database for this parasite host can be found.