Cisco Cisco Packet Data Gateway (PDG) Manuale Di Manutenzione

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Generally Available    06-30-2010
GSS Features in Release 9.0
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GSS Features in Release 9.0
This section provides information for new GSS features for Release 9.0 
Multiple Instance GSS
Release 9.0 enables support for multiple data streams from one server or a single cluster 
setup to utilize multiple instances of GSS with a single installation and multiple databases.
In a cluster setup, there is only one installation per node. During installation, GSS is 
installed at a fixed location (/opt/gss_global directory). The initial GSS installation does not 
create any GSS instance. Once GSS is installed on both the nodes, the 
/opt/gss_global/make_gss_instance script utility creates instances as an when needed and 
validates the conflicting ports/username across the instances.
For all instances on the node, only one set of binaries and scripts are used. Each instance 
will have its own configuration file, log directory, tools directory and separate PostgreSQL 
database. The alarms and events generated by each instance are sent to its corresponding 
chassis. Individual GSS instance can also be stopped, started or switched over. Upgrade is 
smooth and will involve minimum down time as possible.
Each GSS instance can be uninstalled separately and will not have any impact on the other 
instances. Global installation can be only uninstalled if there are no instances configured or 
running on the system.
The advantages of this feature include:
Only one installation required for multiple instances
One binary used across all the instances on the node
Upgrading one set of binaries would upgrade all the instances
In cluster mode resource groups, instances can be balanced across the nodes
For more information on the installation, uninstallation and upgrade procedures for multiple 
GSS instances, refer to Multiple Instances of GSS section in GSS Installation Management 
chapter of GSS Installation and Administration Guide.
Monitoring of Disk Partitions
This feature enables support for disk monitoring of shared postgres and gss installation disk 
partition along with GSS data files disk partition. This feature is supported only for single 
instance GSS, and for GSS in cluster mode.