Scope

Rotating the log depending on the time

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• For general information about JobScheduler Master and Agent logging see What logging possibilities does JobScheduler provide?
• This article is focused on log configuration settings that are applied in some typical scenarios, log rotation and compression.
• Detailed information on log configuration is available from Apache Log4j.
• Modifications of the log configuration are applied with the configuration file 

• $SCHEDULER_HOME/lib/log4j.xml

Log Rotation

Rotating the log depending on

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a period

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration debug="false" xmlns:log4j="http://jakarta.apache.org/log4j/">
    <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss,SSS Z} [%-5p] %c - %m%n" />
        </layout>
    </appender>
      <appender name="FILE" class="org.apache.log4j.DailyRollingFileAppender">
        <!-- not supported by DailyRollingFileAppender param name="MaxBackupIndex" value="7"/-->
        <param name="Append" value="true" />
        <param name="File" value="${LOGFILE}.log" />
        <param name="DatePattern" value="'.'yyyy-MM-dd" />
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss,SSS Z} [%-5p] %c - %m%n"/>
        </layout>
    </appender>
      <root>
        <priority value="debug"/>
        <appender-ref ref="FILE"/>
    </root>
</log4j:configuration>

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The entry <param name="DatePattern" value="'.'yyyy-MM-dd"/>  describes >  specifies the rotation frequenzyfrequency:

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Rotating the log depending on the size

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration debug="false" xmlns:log4j="http://jakarta.apache.org/log4j/">
    <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss,SSS Z} [%-5p] %c - %m%n" />
        </layout>
    </appender>
      <appender name="FILE" class="org.apache.log4j.RollingFileAppender">
        <param name="Append" value="true" />
        <param name="File" value="${LOGFILE}.log" />
        <param name="MaxFileSize" value="2KB" />
        <param name="MaxBackupIndex" value="5" />
        
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss,SSS Z} [%-5p] %c - %m%n"/>
        </layout>
    </appender>
      <root>
        <priority value="debug"/>
        <appender-ref ref="FILE"/>
    </root>
</log4j:configuration>

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This will create a new file .log.n (n=1..5) when the size exceeds 2KB. You also can specify 20MB etc. The maximum value for n is 13.

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Log Rotation and Compression

If you want to compress the rotated logs, please check in the $SCHEDULER_HOME/lib/3rd-party the existens of the file apache-log4j-extras-1.2.17.jar
If the file is not available, log/log4j folder for availability of the file apache-log4j-extras-1.2.xx.jar.
It should be provided with

Rotating and compressing the log depending on

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a period

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration debug="false" xmlns:log4j="http://jakarta.apache.org/log4j/">
    <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss,SSS Z} [%-5p] %c - %m%n" />
        </layout>
    </appender>
      <appender name="FILE" class="org.apache.log4j.rolling.RollingFileAppender">
        <param name="Append" value="true" />
        <param name="File" value="${LOGFILE}.log" />
        
        <rollingPolicy class="org.apache.log4j.rolling.TimeBasedRollingPolicy">
            <param name="ActiveFileName" value="${LOGFILE}.log"/>
            <param name="FileNamePattern" value="${LOGFILE}.%d{yyyyMMdd-hh}.log.gz" />        
        </rollingPolicy>
        
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss,SSS Z} [%-5p] %c - %m%n"/>
        </layout>
    </appender>
      <root>
        <priority value="debug"/>
        <appender-ref ref="FILE"/>
    </root>
</log4j:configuration>

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The entry <param name="FileNamePattern" value="${LOGFILE}.%d{yyyyMMdd-hh}.log" />  describes the rotation frequenzy>  specifies the rotation frequency:

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Rotating and compressing the log depending on the size

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Code Block
language xml title Rotating and compressing the log depending on the size collapse true
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"> <log4j:configuration debug="false" xmlns:log4j="http://jakarta.apache.org/log4j/"> <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender"> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss,SSS Z} [%-5p] %c - %m%n" /> </layout> </appender> <appender name="FILE" class="org.apache.log4j.rolling.RollingFileAppender"> <param name="Append" value="true" /> <param name="File" value="${LOGFILE}.log" /> <rollingPolicy class="org.apache.log4j.rolling.FixedWindowRollingPolicy"> <param name="ActiveFileName" value="${LOGFILE}.log"/> <param name="maxIndex" value="5"/> <param name="FileNamePattern" value="${LOGFILE}.%i.log.gz"/> </rollingPolicy> <triggeringPolicy class="org.apache.log4j.rolling.SizeBasedTriggeringPolicy"> <param name="maxFileSize" value="2048"/> </triggeringPolicy> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss,SSS Z} [%-5p] %c - %m%n"/> </layout> </appender> <root> <priority value="debug"/> <appender-ref ref="FILE"/> </root> </log4j:configuration>

 

This will create a new file .n.log (n=1..5) when whenever the size exceeds 20KB. You also can specify 20MB etc. The max value for n ist 13. 

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group sos-members
Deleting old log files

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As log4j does not provide deleting of old files (maxBackupIndex does not work for all appenders), you should implement a file deletion job on the master. For each agent, you have do define a seperate job. Code Block language xml title Deleting old files <job title="Remove temporary files" order="no " tasks="1 " process_class="vmubuntu2" name="CleanupLogFiles"> <description > <include file="jobs/JobSchedulerCleanupFiles.xml"/> </description> <params > <param name="file_path" value="./logs"/> <param name="file_spec" value="^.*\.log.gz$"/> <param name="file_age" value="00:03"/> </params> <script language="java" java_class="sos.scheduler.job.JobSchedulerCleanupFiles"/> <run_time > <weekdays > <day day="1 2 3 4 5 6 7"> <period single_start="23:00"/> </day> </weekdays> </run_time> </job>

 

 

 

 

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