Red Hat NETWORK SATELLITE SERVER 3.7 Installation Manual

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Red Hat NETWORK SATELLITE SERVER 3.7 Installation Manual Manual pdf 48 page image

44 Chapter 7. Troubleshootingdf -hIn addition to log files, you can obtain valuable information by retrieving the status of your RHNSatellite Server and its various components. This can be done with the command:service rhn-satellite statusIn addition, you can obtain the status of components such as the Apache HTTP Server and the RHNTask Engine individually. For instance, to view the status of the Apache HTTP Server, run the com-mand:service httpd statusIf the Apache HTTP Server isn’t running, entries in your /etc/hosts file may be incorrect. Referto Section 7.3 Host Not Found/Could Not Determine FQDN for a description of this problem andpossible solutions.To obtain the status of the RHN Task Engine, run the command:service taskomatic statusFor more information, see Section 8.7.1.1 Maintaining the RHN Task Engine.To obtain the status of the Satellite’s Embedded Database, if it exists, run the command:service rhn-database statusTo determine the version of your database schema, run the command:rhn-schema-versionTo derive the character set types of your Satellite’s database, run the command:rhn-charsetsIf the administrator isn’t getting email from the RHN Satellite Server, confirm the correct email ad-dresses have been set for traceback_mail in /etc/rhn/rhn.conf.If the traceback mail is marked from dev-null@rhn.redhat.com and you would like the address to bevalid for your organization, include the web.default_mail_from option and appropriate value in/etc/rhn/rhn.conf.If importing/synchronizing a channel fails and you can’t recover it in any other way, run this commandto delete the cache:rm -rf temporary-directoryNote that Section 6.2.2 Preparing for Import suggested this temporary directory be/var/rhn-sat-import/.Then restart the importation or synchronization.7.3. Host Not Found/Could Not Determine FQDNBecause RHN configuration files rely exclusively on fully qualified domain names (FQDN), it isimperative key applications are able to resolve the name of the RHN Satellite Server into an IP address.Red Hat Update Agent, Red Hat Network Registration Client, and the Apache HTTP Server areparticularly prone to this problem with the RHN applications issuing errors of "host not found" and