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Figure 3-2 syslog-ng Log Consolidator Configuration

syslog-ng

fifo

syslog-ng

syslogd

cmcld

TCP/IP

or UDP

Log

reader

+/var/log/

messages

mail log

A B

Consolidated Logs:

+ /clog/syslog

-syslog.log

-mail.log

-syslog-ng.log

+/clog/packages

-clog.log

-csync.log

-xclock.log

NOTE: Actual path for cmcluster may be different

+ /usr/local/cmcluster/conf/<package>/

-clog.log

-csync.log

-xclock.log

1. The syslog-ng server reads the incoming log data from the UDP or TCP connected clients.

Note: gray arrows indicate a read operation; black arrows, a write.

2. The gray area is identical to the client configuration in Figure 3-1: “syslog-ng Log-Forwarding

Configuration”. In terms of the local system, syslog-ng acts as client and is processing

locally forwarded clog_tail messages.

3. The syslog-ng server processes all messages and filters them into the appropriate

consolidated log files. In this specific example, the administrator has created a filesystem

named “/clog” to house the consolidated logs. /clog/syslog/ would contain the

consolidated syslog-related file. /clog/packages would contain consolidated package

logs for a Serviceguard cluster.

3.3 Log Consolidation Configuration

The following sections describe how to configure log consolidation servers and log forwarding

clients. Configuring a consolidation server is a multi-step process. The clog_wizard tool vastly

simplifies the configuration process. If you choose not to use the wizard, the manual configuration

steps are also described below.

3.3 Log Consolidation Configuration 49

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