I'm having an issue where IIS 8.5 on Server 2012 R2 is not logging requests properly. It was working fine up until about a week ago - producing log files >10mb. This information was useful for our analytics processing. Currently, the log files contain very little information, with the occasional request that is logged - producing log files <100kb. I'm unsure what changed to cause it to stop.
I copy these files periodically and analyze them at a separate location. The log files for last month were all between 1mb and 14mb each. The same log files were later shown as <100kb files. The
Date Modified for each does not appear to have changed. I have copies of both sets of files.
Reading through other similar-sounding issues with IIS6 and IIS7 led me to check comparable settings:
- Permissions on logging directories match between my test server and production server. This does not appear to have changed.
- Settings have not changed -
dontLog = False,
selectiveLogging = logAll
Use local time for file naming and rolloveris unchecked.
- W3C logging settings are default
Log Event Destinationto
Both log file and ETW eventproduces same results. Limited requests logged.
- Restarting services & IIS yielded no changes
- Restarting server resulted in no changes.
W3C Logging Service set to
#Software: Microsoft Internet Information Services 8.5 #Version: 1.0 #Date: 2015-10-08 15:22:58 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken 2015-10-08 15:22:58 x.x.x.x GET / - 80 - x.x.x.x MSIE+6.0 - 200 0 0 187 2015-10-08 15:27:58 x.x.x.x GET / - 80 - x.x.x.x MSIE+6.0 - 200 0 0 78 2015-10-08 15:32:58 x.x.x.x GET / - 80 - x.x.x.x MSIE+6.0 - 200 0 0 93