- Log4net Rolling File Appender Configuration Example
- Log4net Rollingstyle
- Rolling File Box
- Log4net Rolling File Appender Config
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Active2 years, 8 months ago
I have the following configuration, but I have not able to find any documentation on how to set a maximum backup files on date rolling style. I know that you can do this with size rolling style by using the maxSizeRollBackups.
Ryan Gates3,6704 gold badges41 silver badges76 bronze badges
Ricky SupitRicky Supit1,7205 gold badges18 silver badges20 bronze badges
8 Answers
You can't.
fromlog4net SDK Reference
RollingFileAppender Class
RollingFileAppender Class
CAUTION
Log4net Rolling File Appender Configuration Example
A maximum number of backup files when rolling on date/time boundaries is not supported.
Myster11.6k13 gold badges54 silver badges82 bronze badges
ChaslerChasler2,8827 gold badges33 silver badges55 bronze badges
Even though its not supported, here is how I handled this situation:
This is my configuration:
On application start up I do:
The Sub Method is an Extension Method, it basically wraps string.format like so:
Thomas2,7024 gold badges29 silver badges43 bronze badges
Log4net Rollingstyle
JeffJeff
I spent some time looking into this a few months ago. v1.2.10 doesn't support deleting older log files based on rolling by date. Efi on mac. It is on the task list for the next release. I took the source code and added the functionality myself, and posted it for others if they are interested. The issue and the patch can be found at https://issues.apache.org/jira/browse/LOG4NET-27 .
Mafu JoshMafu Josh
To limit the number of logs, do not include the year or month in the datepattern,e.g. Cnet mozilla firefox download free. datePattern value='_dd'.log'
This will create a new log each day, and it will get overwritten next month.
PhilPhil
Not sure exactly what you need. Below is an extract from one of my lo4net.config files:
wcmwcm7,4685 gold badges34 silver badges61 bronze badges
I recently came across this need when attempting to clean up log logs based on a maxAgeInDays configuration value passed into my service.. As many have before me, I became exposed to the NTFS 'feature' Tunneling, which makes using FileInfo.CreationDate problematic (though I have since worked around this as well)..
Since I had a pattern to go off of, I decided to just roll my own clean up method.. My logger is configured programmatically, so I merely call the following after my logger setup has completed..
Probably not the prettiest approach, but working pretty well for our purposes..
mattezellmattezell4471 gold badge4 silver badges12 bronze badges
NLog, which is set up nearly the same way as Log4Net (& is actively maintained - even has support for .NET Core), supports rolling logs based on date.
Coruscate5Coruscate5
It's fairly easy to inherit from a log4net appender and add say your own override method which performs the clean up of files. I overrode OpenFile to do this. Here's an example of a custom log4net appender to get you started: https://stackoverflow.com/a/2385874/74585
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Matthew LockMatthew Lock8,6547 gold badges68 silver badges113 bronze badges
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Active5 years, 11 months ago
I have a rolling file appender and every night it rolls the file. However, when it rolls it, the new file only has one log entry. It seems that file is not appending log entries anymore. If I restart the service it logs correctly.
Here are my settings:
Philipp M1,6897 gold badges25 silver badges37 bronze badges
Rolling File Box
JoeRodJoeRod
2 Answers
I found what the issue was. I removed this line in the configuration and it started to append correctly after it rolled the file:
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JoeRodJoeRod
Set
maxSizeRollBackups
to a value perhaps (maxSizeRollBackups set to negative 1 to allow an infinite number of backup files)This example show how to configure the RollingFileAppender to roll log files once per program execution. The appendToFile property is set to false to prevent the appender from overwriting the existing files. The maxSizeRollBackups is set to negative 1 to allow an infinite number of backup files. The file size does have to be limited but here it is set to 50 Gigabytes which, if a log file exceeds this size limit during a single run then it will also be rolled.
Ref.
Philipp M1,6897 gold badges25 silver badges37 bronze badges
Log4net Rolling File Appender Config
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