About log files

The server maintains several different types of logs. The server outputs statistics about client connections and stream activity to access logs. The server also maintains diagnostic logs and application logs for application activities.

access.XX.log

Tracks information about users accessing the server.

application.XX.log

Tracks information about activities in application instances.

diagnostic logs

Track information about server operations.

Note: In Adobe Flash Player 9 Update 3, Flash Player no longer notifies the server about pause events.

Configuration files for logging

Use the Server.xml and Logger.xml configuration files to configure logging. The Server.xml file contains a Logging section that controls logging behavior for the entire server. The Logging section includes an Enable tag that determines whether the server logs events. The Logging section also contains a Scope tag that determines whether the server writes separate log files for each virtual host or one file for the entire server. The location of each log file is determined by the Directory and FileName tags in the Logger.xml files.

If the Scope tag is set to server, the Logger.xml file in the rootinstall/conf folder determines the logging configuration for the whole server.

If the Scope tag is set to vhost, you can place Logger.xml files in virtual host root folders to control the behavior of each virtual host. If the Scope tag is set to vhost and a virtual host Logger.xml file doesn’t exist, the root Logger.xml file controls the logging behavior. If the Scope tag is set to server, virtual host Logger.xml files are ignored.

For more information, see comments in the Server.xml and Logger.xml files installed in the rootinstall/conf directory.

Working with web server log files

Adobe Media Server installs with the Apache HTTP Server.

The default location of the ApachAdobe Mediae log files is RootInstall/Apache2.4/logs. The logs are in the default Apache error and combined access log formats. To change the location of the log files, edit the RootInstall/Apache2.4/conf/httpd.conf file.

The Apache logs are named access_log and error_log. Adobe Media Server handles log rotation for the Apache logs.

For more information about Apache log files, see the Apache documentation at www.apache.org.

Rotating and backing up log files

Log files grow larger over time, but there are methods for managing log file size.

One option is to rotate log files, moving or deleting the oldest files. Use the rotation element in the Logger.xml file to specify a rotation schedule for log files. Two types of rotation schedules can be established. The first option is to set a daily rotation at a certain time. For example, setting daily at 00:00 rotates files every 24 hours at midnight. Alternatively, set a rotation that occurs when the log exceeds a specified length. Name, maximum file size in kilobytes, and maximum number of log files to keep can also be customized using the rotation element. For an example, see the Logger.xml file installed in the /conf directory.

Note:

Log file rotation cannot be disabled. However, you can set values in the Logger.xml configuration files that effectively turn off rotation. Choose a large value for the MaxSize tag. Set the Schedule type to "duration" and choose a long maximum duration. For more information about the Logger.xml configuration files, see Configuration files for logging.

You can write an operating system script to delete or back up the log regularly. For important log files, move the log directory to a backup location. You can move the current active file; the server creates a new file on the next log event.

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