| Element Name |
Description |
|
One log file per
|
Specifies whether the Web server maintains one log file for the
whole server or one log file for each site on the server.
When you select Site, the settings that you specify on
the Logging page at the server level are default values for
all sites on your server. You can then open the Logging page
at the site level to configure specific settings for a site.
|
|
Format
|
Specifies the format of the log file that is created when a
request is logged.
When you configure the Web server to have one log file, you can
select one of the following log file formats:
| Value |
Description |
|
Binary
|
Configures IIS to use the binary centralized logging format. By
using this format, IIS creates one log file for all sites on the
Web server. Every site writes request hit log information as binary
unformatted data to this log file. Because this kind of logging
conserves valuable memory and CPU resources, it is appropriate for
use in an ISP environment, where Web servers can host many sites,
or in any high-traffic situation.
|
Note |
|
|
To extract data from this log file format, you must use a tool,
such as LogParser 2.2.
|
|
|
W3C
|
Configures IIS to use the centralized W3C log file format to log
information about all sites on the server. This format is handled
by HTTP.sys, and is a customizable ASCII text-based format, which
means that you specify the fields that are logged. Specify the
fields that are logged on the W3C Logging Fields dialog box
by clicking Select Fields on the Logging page. Fields
are separated by spaces, and time is recorded in Coordinated
Universal Time (UTC).
|
When you configure the Web server to have one log file per site,
you can select one of the following log file formats:
| Value |
Description |
|
IIS
|
Configures IIS to use the Microsoft IIS log file format to log
information about a site. This format is handled by HTTP.sys, and
is a fixed ASCII text-based format, which means that you cannot
customize the fields that are logged. Fields are separated by
commas, and time is recorded as local time.
The following list is a list of fields that are logged when you
use the IIS log file format:
- Client IP address
- User name
- Date
- Time
- Service and instance
- Server name
- Server IP address
- Time taken
- Client bytes sent
- Server bytes sent
- Service status code (A value of 200
indicates that the request was fulfilled successfully.)
- Windows status code (A value of 0
indicates that the request was fulfilled successfully.)
- Request type
- Target of operation
- Parameters (the parameters that are
passed to a script.)
Not all fields will contain data. When a field does not contain
data, a hyphen (-) appears as a placeholder. When a field contains
a non-printable character, HTTP.sys replaces it with a plus sign
(+) to preserve the log file format.
|
|
NCSA
|
Configures IIS to use the National Center for Supercomputing
Applications (NCSA) Common log file format to log information about
a site. This format is handled by HTTP.sys, and is a fixed ASCII
text-based format, which means that you cannot customize the fields
that are logged. Fields are separated by spaces, and time is
recorded as local time with the Coordinated Universal Time (UTC)
offset.
The following list is a list of fields that are logged when you
use the NCSA Common log file format:
- Remote host address
- Remote log name (This value is always
a hyphen.)
- User name
- Date, time, and UTC offset
- Request and protocol version
- Service status code (A value of 200
indicates that the request was fulfilled successfully.)
- Bytes sent
Not all fields will contain data. When a field does not contain
data, a hyphen (-) appears as a placeholder. When a field contains
a non-printable character, HTTP.sys replaces it with a plus sign
(+) to preserve the log file format.
|
|
W3C
|
Use the W3C Extended log file format to log information about a
site. This format is handled by HTTP.sys, and is a customizable
ASCII text-based format, which means that you specify the fields
that are logged. Specify the fields that are logged on the W3C
Logging Fields dialog box by clicking Select Fields on
the Logging page. Fields are separated by spaces, and time
is recorded in Coordinated Universal Time (UTC).
|
|
Custom
|
Configures IIS to use a custom format for a custom logging
module. When you select this option, the Logging page
becomes disabled, because custom logging cannot be configured in
IIS Manager.
|
|
|
Select Fields
|
Opens the W3C Logging Fields dialog box in which you can
select which fields to log. This button is available only when the
W3C log file format is selected.
|
|
Directory
|
Specifies the physical path where the log file or files are
stored. The default value is
%SystemDrive%\inetpub\logs\LogFiles.
|
|
Encoding
|
Specifies how the log file or log files are encoded: UTF-8 or
ANSI.
Select UTF-8 when you want to enable both single-byte and
multibyte characters in one string. This encoding enables you to
read text-based logs, for example, W3C Extended, IIS, and National
Center for Supercomputing Applications (NCSA) Common formats, in a
language other than English. Additionally, if your Web server
serves URLs in a language other than the one supported by the
server's default code page, you should enable UTF-8 encoding for
log content.
By default, IIS tries to serve URLs in code pages other than the
server's default code page. For security reasons, you might want to
enable the UTF-8 format to reduce the effect of an attack that
could cause UTF-8 URLs not to translate correctly to the default
code page.
|
|
Schedule
|
Configures IIS to create new log files based one of the
following values:
- Hourly: a new log file is created each
hour.
- Daily: a new log file is created each
day.
- Weekly: a new log file is created each
week.
- Monthly: a new log file is created
each month.
|
|
Maximum file size (in bytes)
|
Configures IIS to create a new log file when the file reaches a
certain size (in bytes).
The minimum file size is 1048576 bytes. If this attribute is set
to a value less than 1048576 bytes, the default value is implicitly
assumed as 1048576 bytes.
|
|
Do not create new log files
|
Configures IIS to not create new log files. This means that
there is a single log file that will continue to grow as
information is logged.
|
|
Use local time for file naming and rollover
|
Specifies that log file naming and time for log file rollover
uses the local server time. When this is not selected, Coordinated
Universal Time (UTC) is used.
|
|
Note |
|
|
Regardless of this setting, timestamps in the actual log file
will use the time format for the log format that you select from
the Format list. For example, NCSA and W3C log file formats
use UTC time format for timestamps.
|
|