131Application Gateway Administration GuideChapter 11Logging and MonitoringApplication Gateway OperationsThe following topics describe how to use Application Gateway logs andmonitoring tools:• Configuring and Working with System Logs, page 131• Enabling and Viewing SNMP and Health Logs, page 138• Viewing the W3C-Formatted HTTP Request Log, page 138• Enabling and Viewing SNMP Logs, page 139• Enabling and Viewing Health Logs, page 139• Monitoring Application Gateway Operations, page 141Configuring and Working with System LogsSystem message logs contain information that can help ApplicationGateway support personnel assist with troubleshooting. The ApplicationGateway uses syslog to generate log files, enabling you to manage andview the system logs with familiar third-party tools. The log levelsincluded are warning, error, and critical.Application Gateway system logging features:• Rotates system log files so that the log will not exceed disk capacity.– Log rotation is based on reaching a maximum file size of 1megabyte.– The log file to which the syslog daemon is currently writing is intext format. When the active log file reaches the threshold for logrotation, the log file is archived on the Application Gateway as atar file compressed with gzip.
