log4net in my project creates new log file every minute. I would like to have just one file per instance of my application, but every instance that runs should create new log file.
This is from my app.config file:
<appender name="file" type="log4net.Appender.RollingFileAppender">
<file value="C:\\Logs\\log2_"/>
<rollingStyle value="Date"/>
<datePattern value="MMdd_HHmmss.\tx\t"/>
<staticLogFileName value="false"/>
<appendToFile value="true"/>
<maximumFileSize value="500MB"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %-5level %message%newline"/>
</layout>
</appender>
What is the error here?
Your rolling style is set to Date meaning it will rotate on a time based interval. The datePattern element appears to be misused but it set to roll every minute (the ./tx/t) seem extraneous.
From the documentation the following is the example for once per app instance (with a 50G hard limit):
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="logfile.txt" />
<appendToFile value="false" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="-1" />
<maximumFileSize value="50GB" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
See here for the documentation
exclude dateTime minutes from file layout
Related
This question already has answers here:
Having a log per day
(3 answers)
Closed 5 years ago.
I've inherited an application that I need to keep more than a single days of logs.
It is using log4net for it's logging, and I have the log4net.config file contents below:
<?xml version="1.0"?>
<log4net>
<appender name="Console" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="logs\connector.log" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<datePattern value="yyyyMMdd" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="5MB" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<root>
<level value="INFO" />
<appender-ref ref="Console" />
<appender-ref ref="RollingFileAppender" />
</root>
</log4net>
The file in the log directory never has a date in it and is always called connector.log.
It's created date is from a long time ago, so I think it is simply emptying the file when it ticks over to a new day (and the timestamp of logs in that file prove that).
How would I change this so that it keeps a log file per day.
<appender name="SysAppender" type="log4net.Appender.RollingFileAppender,log4net">
<param name="File" value="App_Data/" />
<param name="AppendToFile" value="true" />
<param name="RollingStyle" value="Date" />
<param name="DatePattern" value=""Logs_"yyyyMMdd".htm"" />
<param name="StaticLogFileName" value="false" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="<HR COLOR=red>%n异常时间：%d [%t] <BR>%n异常级别：%-5p <BR>%n异 常 类：%c [%x] <BR>%n%m <BR>%n <HR Size=1>" />
<!--<conversionPattern value="%newline %n记录时间：%date %newline %n 线程ID:[%thread] %n日志级别： %-5level %n跟踪描述：%message%newline %n"/>-->
</layout>
</appender>
needn't define log file's name
I am trying to do something that I thought was simple.
To have a FileAppender in log4net with a date in the filename.
Before you rush to answer this, I need to make clear that I don't need a RollingFileAppender, because I know it's possible with that one.
I want to produce 1 log file every time I run my console app. So I don't need a rolling file appender, just 1 file each time, with a timestamp on it.
This is where it gets tricky because this configuration:
<log4net>
<root>
<level value="ALL" />
<appender-ref ref="MyFileAppender" />
</root>
<appender name="MyFileAppender" type="log4net.Appender.FileAppender">
<file value="logs\" />
<datePattern value="dd.MM.yyyy'.log'" />
<appendToFile value="true" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %level %logger - %message%newline" />
</layout>
</appender>
</log4net>
Gives this error:
log4net:ERROR XmlHierarchyConfigurator: Cannot find Property [datePattern] to se
t object on [log4net.Appender.FileAppender]
It works if I don't have a pattern and just have a static file that keeps getting overriden each time the app.
So is this not possible with a file appender?
I am using version 1.2.15.0.
that did it:
<appender name="FileAppender" type="log4net.Appender.FileAppender">
<file type="log4net.Util.PatternString" value="logs\App-%date{yyyy-MM-dd_HH-mm-ss}.log" />
<appendToFile value="true" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%2thread] %-5level - %message%newline" />
</layout>
</appender>
This question already has answers here:
Log4net rolling daily filename with date in the file name
(11 answers)
Closed 8 years ago.
I want to create a log file using Log4Net. It should have daily activities log till midnight and resets for the next day. What appender to use and how?
EDIT:
I forgot to mention, it should not create a different file each day but only one file.
Something like this ?
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
<file value="logs\" />
<datePattern value="dd.MM.yyyy'.log'" />
<staticLogFileName value="false" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="50MB" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
It should do what you expect.
I've included all settings to help you to tweak it to reach your final needs. There are many samples like this one on the web with explanations.
Refered the post
Why is log4net creating two separate log files when using RollingFileAppender?
I want to know if creation of new log files whe current file exceeds certain size is possible.
Look at RollingFileAppender in the log4net config examples. The example given there does have a max file size, and a new file is generated once the old one hits the cap.
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="log.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="100KB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
Im trying to create a log file using log4net.
I have it create a log file. But i can't get the name of the log file to be the current date.
I have tried this:
<file value="log\\$date.txt"/>
But this just leans me with a file called "$date.txt" in the log folder.
I would like the file to be named "25-04-2012.txt"
Anyone know the little trick to make this work?
From the documentation, you should use a RollingFileAppender
This example show how to configure the RollingFileAppender to roll log
files on a date period. This example will roll the log file every
minute! To change the rolling period adjust the DatePattern value. For
example, a date pattern of "yyyyMMdd" will roll every day. See
System.Globalization.DateTimeFormatInfo for a list of available
patterns.
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="logfile" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<datePattern value="yyyyMMdd-HHmm" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
Documentation (search for rollingFileappender)
<appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender" >
<param name="File" value="C:\Akhila\logger\logger\bin\Debug\log-" />
<param name="AppendToFile" value="true" />
<rollingStyle value="Date" />
<datePattern value="yyyy-MM-dd" />
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%-5p%d{yyyy-MM-dd hh:mm:ss} – %m%n" />
</layout>
</appender>