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Starting and Setting Up RTR
2.6 Router Load Balancing
• Use
/balance
on frontend nodes only. Use of
/balance
on routers is supported
only to enable RTR Version 2 balancing. Use this qualifier only when you are
connecting frontend nodes running RTR Version 2. See CREATE FACILITY
and SET FACILITY for more information on
/balance
.
• Commands to set/show load balancing are:
create facility /balance
Enables load balancing attribute on the executor node
Significant only on router and frontend nodes
Disabled, by default
set facility /[no]balance
Toggles the attribute setting on the executor node
show facility /configuration
Shows the current setting of the load balance attribute
show facility /link
On a frontend, shows the current router node
On a router, shows the frontends connected, and the current load
coordinating backend node
show facility /balance
On a router node, shows the current number of frontends connected,
and the current credit
On the coordinating backend node, shows the total number of routers,
frontends and credit given out
Useful for troubleshooting frontend connection problems
2.7 RTR Privileges
RTR supports two levels of rights or privileges,
rtroper
and
rtrinfo
(on UNIX®
platforms), RTR$OPERATOR and RTR$INFO (on OpenVMS) and RtrOperator
and RtrInfo on Windows NT. In general,
rtroper
or RTR$OPERATOR is required
to issue any command that affect the running of the system, and
rtrinfo
or
RTR$INFO is required for using monitor and display commands.
Setting RTR Privileges on UNIX Systems
On UNIX machines RTR privileges are determined by the user id and group
membership. For RTR users and operators, create the group
rtroper
and add
RTR operators and users as appropriate.
The root user has all privileges need to run RTR. Users in the group
rtroper
also
have all privileges with respect to RTR, but may not have sufficient privilege to
access resources used by RTR, such as shared memory or access to RTR files.
The
rtrinfo
group is currently only used to allow applications to call
rtr_request_info( )
.
Depending on your UNIX system, see the
addgroup
,
groupadd
or
mkgroup
commands or the System Administration documentation for details on how to
add new groups to your system.
Starting and Setting Up RTR 2–9