Red Hat NETWORK - USER 3.0 Przewodnik Instalacji Pobierz pdf (Strona 61)

General Problems

Component/Task Log File Location

RHN Satellite Synchronization

Tool

/var/log/rhn/rhn_server_satellite.log

Monitoring infrastructure /var/log/nocpulse/ directory

Monitoring notifications /var/log/notification/ directory

RHN DB Control - Embedded

Database

/var/log/rhn/rhn_database.log

RHN Task Engine (taskomatic) /var/log/messages

yum /var/log/yum.log

XML-RPC transactions /var/log/rhn/rhn_server_xmlrpc.log

7.3. General Problems

To begin troubleshooting general problems, examine the log file or files related to the component

exhibiting failures. A useful exercise is to issue the tail -f command for all log files and then run

yum list on Red Hat Enterprise Linux 5 (or up2date --list on earlier Red Hat Enterprise Linux

versions). You should then examine all new log entries for potential clues.

A common issue is full disk space. An almost sure sign of this is the appearance of halted writing

in the log files. If logging stopped during a write, such as mid-word, you likely have filled disks. To

confirm this, run this command and check the percentages in the Use% column:

df -h

In addition to log files, you can obtain valuable information by retrieving the status of your RHN

Satellite and its various components. This can be done with the command:

/usr/sbin/rhn-satellite status

In addition, you can obtain the status of components such as the Apache Web server and the

RHN Task Engine individually. For instance, to view the status of the Apache Web server, run the

command:

service httpd status

If the Apache Web server isn't running, entries in your /etc/hosts file may be incorrect. Refer

to Section 7.4, “Host Not Found/Could Not Determine FQDN” for a description of this problem and

possible solutions.

To obtain the status of the RHN Task Engine, run the command:

service taskomatic status

For more information, see Section 8.8.1.1, “Maintaining the RHN Task Engine”.

To obtain the status of the Satellite's Embedded Database, if it exists, run the command:

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Red Hat NETWORK - USER 3.0 Przewodnik Instalacji Strona 61