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Chapter 3. Example Topologies
3.2. Multiple Proxy Horizontally Tiered Topology
For larger networks, a more distributed method may be needed, such as having multiple
RHN Proxy Servers all connecting to Red Hat Network individually. This horizontally
tiered configuration balances the load of client requests while enabling each Proxy to si-
multaneously synchronize with RHN.
A disadvantage of this horizontal structure is that custom packages loaded to an individual
Proxy must be distributed to its sibling servers. This situation can be addressed in one of
two ways:
•
The
rsync
file transfer program can be used to synchronize packages between the Prox-
ies
•
A Network File System (NFS) share can be established between the Proxies and the
custom channel repository.
Either of these solutions will allow any client of any RHN Proxy Servers to have all custom
packages delivered to them.
Figure 3-2. Multiple Proxy Horizontally Tiered Topology
3.3. Multiple Proxy Vertically Tiered Topology
An alternative method for multiple RHN Proxy Servers is to establish a primary Proxy
that the others connect to for RPMs from Red Hat Network and custom packages created
locally. In essence, the secondary Proxies act as clients of the primary. This alleviates the
