Cisco 11503 Administration Guide - Page 133

Chapter 4 Using the CSS Logging Features Specifying a Log File Destination Specifying a Log File Destination To specify a destination where the CSS logs subsystem activity, use the logging command. You can specify the following locations for log files: • disk filename - New or existing filename in the disk log directory • host ip or host - IP address of the syslog daemon on the host or a host name • log line - CSS active session Logging to a CSS disk causes the performance of the CSS to degrade.If logging requires frequent writes to disk (that is, several hundred log messages per day), the most reliable configuration is to log to a hard disk and store all other system files on a Flash disk. Although Flash disks generally provide the most reliable way to store information over time, hard disks endure frequent writes to disk better than the Flash disks currently available. To prevent excessive writes to the CSS disk, consider disabling logging to the sys.log file on disk (see the "Disabling Logging to the sys.log File on the Disk" section). You can continue sending CSS log information to the sys.log file at an alternate location. To do this, use either the logging host command to send log information to a syslog daemon on a host system (see the "Specifying a Host for a Log File Destination" section) or the logging line command to send (but not save) log information to an active CSS line (see the "Specifying a Line for a Log File Destination" section). This section includes the following topics: • Specifying a Log File on the Disk • Disabling Logging to the sys.log File on the Disk • Specifying a Host for a Log File Destination • Specifying a Line for a Log File Destination OL-5647-02 Cisco Content Services Switch Administration Guide 4-13