Example of an Intranet Site. The following example shows a W3C Extended log file entry from an intranet site, as viewed in a text editor. The log file includes only. Where are my IIS log files stored? The full log path is comprised of the log file directory plus the first part of the log file name.
IIS installs logging module plug-ins to help administrators customize the way that IIS server activity is logged. You can configure IIS logging options in IIS Manager. IIS logging module plug-ins are COM components that implement the or interfaces. The logging module plug-ins that are available with IIS are as follows:.
Centralized binary logging format IIS 5.1 and earlier: The Centralized binary logging plug-in is not available. W3C extended log file format. NCSA common log file format. IIS log file format. ODBC log file format ISAPI Filters.
If you need to generate log files in a format that differs considerably from the manner in which IIS generates log files, you will need to create your own. Custom logging modules are added to IIS by registering a new COM component that implements. The newly registered component can then be established as the logging module for the server by using the administrative user interface, or programmatically by changing properties in the metabase. Your custom logging module will then be called by IIS to log requests, just as if it were one of the built-in logging modules. If you create your own logging module, you also have the option of creating a user interface module, adding reading or configuring capabilities to your logging module. The ODBC logging module for IIS allows you to log to a database.
With ASP.NET, you can use ADO.NET to display and manipulate data from supported data sources such as a database. Use data source controls such as SqlDataSource, AccessDataSource, ObjectDataSource, or a custom control to connect to your data source. Then, to display your data in a formatted, customizable manner, bind the data to a server control such as the GridView, DataGrid, or Table control. For more information, see,.
The Logging Utility Component.
By You can manage the amount of server disk space that Internet Information Services (IIS) log files consume by using compression, remote storage, scripted deletion, and an IIS Log Cleaner Tool. Overview The log files that IIS generates can, over time, consume a large amount of disk space. Logs can potentially fill up an entire hard drive. To mitigate this problem, many users turn off logging completely.
Fortunately, there are alternatives to doing so, such as the following:. The above mitigations are described in the sections below.
You may also want to do the following to control disk usage:. Limit log size by omitting unneeded property fields. Create separate logs for Web sites and applications. Preserve memory resources by using centralized binary logging.
For more information, see. Enable Folder Compression IIS log files compress to about 2% of their original size. Enable compression of a log file as follows. You must be an administrator to perform this procedure.
Click the File Manager icon in the icon bar. Move to the folder containing IIS log files (by default,%SystemDrive% inetpub logs LogFiles). Right-click on the folder and click Properties. On the General tab of the Properties page, click Advanced. Click Compress contents to save disk space, and then click OK. Click Apply, and then select whether to compress the folder only, or the folder, its subfolders, and its files. Verify that the folder contents are compressed.
The name of the folder and the name of each file should be colored blue, and the size of a compression file should be smaller. This is a simple way to lower disk usage.
It is not a final solution, however, because disk usage still grows over time, and could eventually fill up the hard drive. If the folder already contains a significant amount of data, it could take the computer a while to compress its contents. Also note that this one-time process could slow down the computer during the initial compression, so if this is a production server, perform this operation during off-peak hours to prevent service degradation. Move the Log Folder to a Remote System IIS log files are stored by default in the%SystemDrive% inetpub logs LogFiles folder of your IIS server. The folder is configured in the Directory property on the Logging page for either the server or an individual site. To lessen the problem of log disk usage, you can move your IIS log files to a folder on another server that has more space. This server can either be in the same domain as the local IIS server, or a different domain.
You can save log files remotely either for the entire server or for individual Web sites. This solution can help the security of the system, because if a local hard drive crashes, the log data is still available on remote storage.
In addition, the log files can be consumed by analysis systems. Change the location of an IIS log file to a remote share as follows:. Create a log-file directory on a remote server that is in the same domain as your local Web server running IIS. In the folder's Properties page, on the Sharing tab, click Share so that the directory is shared. On the Security tab, assign groups and users with the appropriate permissions. Ensure that the appropriate groups and users are able to read and write to the log files. For more information, see.
Note: If you want to write log files to a remote server in a different domain, see. Open IIS Manager on your local Web server. In IIS Manager, in the Connections pane, click the server or a Web site. Double-click Logging. In the Directory text box, enter the full UNC path of the directory that you created on the remote server.
For example, type servername Logs, where 'servername' represents the name of the remote server, and 'Logs' represents the name of the share where the log files are stored. In the Actions pane, click Apply, and then click OK. All Web sites within the directory should begin logging data to the remote share. For more information, see. Delete Old Log Files by Script You can control disk usage of log files by running a script that automatically deletes log files that are older than a certain age. Running this script in a scheduled task will keep the problem of a disk filling up under control without constant maintenance. The following VBScript will check the age of each log file in a folder and will delete any log file older than a specified age.
To customize the script for your purposes, simply change the name and path of the folder in line 1 of the script, and change the maximum age to the desired value in days, in line 2. SLogFolder = 'c: inetpub logs LogFiles' iMaxAge = 30 'in days Set objFSO = CreateObject('Scripting.FileSystemObject') set colFolder = objFSO.GetFolder(sLogFolder) For Each colSubfolder in colFolder.SubFolders Set objFolder = objFSO.GetFolder(colSubfolder.Path) Set colFiles = objFolder.Files For Each objFile in colFiles iFileAge = now-objFile.DateCreated if iFileAge (iMaxAge+1) then objFSO.deletefile objFile, True end if Next Next The script above will scan all subfolders, so it will process logs for ALL sites in and under the folder specified. If you want to limit the process to just a single site, change the path appropriately. To run the script manually, execute the following script in an administrator command line: cscript.exe c: scripts retentionscript.vbs Using a script to delete log files is a long-term, reliable solution to the problem of log files consuming disk space. If you automate the process, as shown below, it doesn't require constant maintenance. Run the script as a scheduled task You can automate the task of deleting log files by script by creating a Windows task schedule to run the script periodically.
You can schedule the script to run at any time using the Windows Task Scheduler. How you configure the scheduled task should be coordinated with the configuration of the log file rollover options. Open Server Manager, click the Tools menu, and then click Task Scheduler. In the Actions pane of the Task Scheduler dialog box, click Create Task. On the General tab of the Create Task dialog box, enter a name for the task, such as 'Delete Log Files'. Set the security properties, selecting a user account with sufficient privileges to run the script.
Click the Triggers tab, and then click New. In the New Trigger dialog box, set Begin the task to On a schedule. Select the periodicity, for example, Daily.
Enter the Start date, select more advanced settings, and ensure that Enabled is selected if you are ready to initiate the schedule. Click the Actions tab, and then click New. In the New Action dialog box, select a value for Action, in this case, Start a program. In Program/script, enter cscript, and in Add arguments (optional), enter the path and name of the script file, for example, C: iis Log File Deletion.vbs.
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Verify that the task has been added to the Active Tasks pane. Right-click on the new task, and select Run. Navigate to the folder that the script ran on, and verify that the appropriate log files were deleted. Navigate back to the Task Scheduler, right-click on the task, and click End so the status returns to Ready and the task is ready for scheduled runs. Delete Old Log Files by the IIS Log Cleaner Tool IIS Log Cleaner is a simple tool for enacting a log retention policy for IIS. The tool runs in the background (once every hour) and cleans up the IIS log folder automatically, deleting log files older than a maximum age that you set. The log files are moved to the Recycle bin to avoid potential data loss.
You can also run the cleaning process manually, and you can pause the automated process. This is a third-party tool that is not supported by Microsoft. Cleaner Tool Files The IIS Log Cleaner consists of the following:. The IISLogCleaner.exe application that executes the log cleaning process. The application is stored in a local folder that you select when you download the tool.
The settings.txt file that specifies the log file folder to be cleaned and the maximum age at which a log file is deleted. The default settings are the default IIS log folder (ex: c: inetpub logs LogFiles), and a maximum age (in days) of 30. These settings are configurable by either opening settings.txt in a text editor or by using a command in the notification area (see below).
Delete Iis Log Files
The settings.txt file is created automatically when IISLogCleaner.exe is first run. The settings.txt file is stored in the same folder as IISLogCleaner.exe. The IIS Log Cleaner icon in the notification area (labeled IIS). Right-clicking the IIS notification icon displays a list of action commands and status settings:. Clean Now executes the cleaning process immediately instead of on a timed basis. Paused stops the automated cleaning process. If Paused is selected, you can click it to re-start the automated cleaning process.
Settings enables you to configure the settings in settings.txt. Exit to exit the tool. Use the Cleaner Tool To download, configure, and run the IIS Log Cleaner tool, proceed as follows:. Download the executable by executing and saving the executable in a folder of your choice on the server (there is no installer). Click through the security popups. Execute IISLogCleaner.exe in the folder. This creates the settings.txt file in the same folder.
To make changes to the settings.txt file, open the file with a text editor, or right-click the IIS icon in the notification area, and then click Settings. If you change the settings file, exit the tool by right-clicking the IIS notification icon and then clicking Exit, and then launch the tool again. Right-click the IIS icon in the notifications area, and then click Paused to un-pause the application. The application will run once an hour and move log files older than the specified period to the recycle bin. To run the cleaning tool manually, right-click the IIS icon in the notifications area, and then click Clean Now. Optionally, adjust the recycle bin size to control how much log data is kept before being purged from the recycle bin by the operating system.
Usage notes:. The application is set by default for the IIS root log folder, so it will scan the logs for all sites (all subfolders). If you want it to clean up only a specific site, point it at the site's folder. The application will only move files with the.LOG extension. The application is not a service, so the user must remain logged on to use it. The application requires that the logged-on user have write permissions to the log folder to work correctly.
If the system is restarted, the application needs to be re-run. You can drag it to your Startup folder to make it run on boot.