Enabling logs in Camunda

Camunda 7 Topics Discussion & Questions
1

Hi,

I want to enable logs in camunda in tomcat or wildfly in specific pattern using logback.xml.

I have put logback-classic-1.1.2.jar , logback-core-1.1.2.jar in tomcat/lib and camunda-webapp/lib and engine-rest/lib and put the logabck.xml in WEB-INF/classes of both camunda and engine-rest webapp.

I am getting the logs of camunda in catalina.out but not in the pattern i mentioned in logback.xml.

Logback.xml is below:

Please let me know if I need to include something more.

<?xml version="1.0" encoding="UTF-8"?> 
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
    <pattern>{"type":"${TYPE}", "host":"${HOST}", "level":"%replace(%level){TRACE,DEBUG}", "neid":"${NEID}", "system":"${SYSTEM}", "time":"%d{yyyy-MM-dd'T'HH:mm:ss.SSS'Z', UTC}", "timezone":"${TIMEZONE}", "log":"%msg"}%n</pattern>
 </encoder>
    </appender>

    <!-- Send debug/info messages to a file-->
    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>/opt/tomcat/test.log</file>
    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
    <pattern>{"type":"${TYPE}", "host":"${HOST}", "level":"%replace(%level){TRACE,DEBUG}", "neid":"${NEID}", "system":"${SYSTEM}", "time":"%d{yyyy-MM-dd'T'HH:mm:ss.SSS'Z', UTC}", "timezone":"${TIMEZONE}", "log":"%msg"}%n</pattern>
</encoder>

    <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
    <FileNamePattern>/opt/tomcat/test.%i.log.zip</FileNamePattern>
    <MinIndex>1</MinIndex>
    <MaxIndex>10</MaxIndex>
    </rollingPolicy>

    <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
    <MaxFileSize>2MB</MaxFileSize>
    </triggeringPolicy>
    </appender>

    <root level="DEBUG">
    <appender-ref ref="STDOUT" />
    <appender-ref ref="FILE" />
    </root>

Regards,
Durga

2

Hi Durga,

What about the logback dependency?, please check
https://docs.camunda.org/manual/7.9/user-guide/logging/#example-using-logback

Best regards,
Yana

3

Hi Yana,

I did the same.

I have added logback.xml in camunda.war in WEB-INF/classes and added logback jars in WEB-INF/lib and jboss-deployment-structure.xml in META-INF.

Content of jboss-deployment:

  <exclusions>
  <module name="org.apache.commons.logging" />
  <module name="org.apache.log4j" />
  <module name="org.jboss.logging" />
  <module name="org.jboss.logging.jul-to-slf4j-stub" />
  <module name="org.jboss.logmanager" />
  <module name="org.jboss.logmanager.log4j" />
  <module name="org.slf4j" />
  <module name="org.slf4j.impl" />
</exclusions>

The same configurations works for tomcat but not in Jboss EAP or Wildfly.

Could you please let me know what more needs to be done.

Regards,
Durga

4

If you figure out the pattern, can you share it in: Camunda JSON Logging for shared engine: solved! so we can add it

7

Hi,

Can someone kindly provide an update.

Regards,
Durga

8