Technical data

Using DNS to Balance Work Load
6.6 Metric Server Startup and Shutdown
• SYS$STARTUP:TCPIP$METRIC_SHUTDOWN.COM allows you to shut down
the metric service.
To preserve site-specific parameter settings and commands, create the following
files. These files are not overwritten when you reinstall TCP/IP Services:
• SYS$STARTUP:TCPIP$METRIC_SYSTARTUP.COM can be used as a
repository for site-specific definitions and parameters to be invoked when the
metric service is started.
• SYS$STARTUP:TCPIP$METRIC_SYSHUTDOWN.COM can be used as a
repository for site-specific definitions and parameters to be invoked when the
metric service is shut down.
6.7 Solving Load Broker Problems
TCP/IP Services provides the following tools to assist in solving load broker
problems:
• The Metric View utility, to display metric information regarding DNS cluster
members.
• Diagnostic log files.
6.7.1 Metric View Utility
Two images in the TCP/IP Services software distribution kit perform the metric
functions:
• TCPIP$METRIC.EXE — does the computing
• TCPIP$METRICVIEW.EXE — reads the metric ratings
The Metric View utility, SYS$COMMON:[SYSEXE]TCPIP$METRICVIEW.EXE,
displays the metric rating of the member hosts in the TCP/IP DNS cluster.
To run Metric View, enter the following command:
$ RUN SYS$SYSTEM: TCPIP$METRICVIEW
Host Rating
---- ------
10.10.2.11 rufus.lkg.dec.com 47
10.10.2.255 peach.lkg.dec.com 51
6.7.2 Viewing Diagnostic Messages
If you define the logical TCPIP$METRIC_LOG_LEVEL, the METRIC server
writes diagnostic messages to the TCPIP$METRIC_RUN.LOG file. If you
are experiencing problems with the metric server, define TCPIP$METRIC_
LOG_LEVEL and after a period of operation, review the messages in the
TCPIP$METRIC_RUN.LOG file for an indication of what the problem could
be. See Section 6.5.3 for a description of the logical.
Using DNS to Balance Work Load 6–9