CODEWITHSUNDEEP
javaspring-bootintellij-ideaslf4j
Zag Gol
Zag Gol

Reputation: 1076

Unique log file for each process instance

I have a server that I developed in Java around intellij. I created a number of different configurations (node1, node2, etc.), each representing another server and another port, and then via spring boot I run them all together.

The problem is that the logs of all the servers write to the same slf4j log file, and according to the requirements of my team leader, I need each server to write logs to a separate file.

Here is the definition in the logback.xml file of the error printing file:

<property name="LOGS_PATH" value="./logs" />
<appender name="ERROR_LOG_FILE"
          class="ch.qos.logback.core.rolling.RollingFileAppender">
    <filter class="ch.qos.logback.classic.filter.LevelFilter">
        <level>ERROR</level>
        <onMatch>ACCEPT</onMatch>
        <onMismatch>DENY</onMismatch>
    </filter>
    <file>${LOGS_PATH}/fullNode_error.log</file>
    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
        <charset>UTF-8</charset>
        <Pattern>
            %d{dd/MM/yyyy HH:mm:ss.SSS} [%thread][%-5level][%logger{0}] %msg%n
        </Pattern>
    </encoder>
    <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
        <fileNamePattern>${LOGS_PATH}/archived/fullNode_error.%d{yyyy-MM-dd}.%i.log.zip</fileNamePattern>
        <maxFileSize>10MB</maxFileSize>
        <maxHistory>30</maxHistory>
    </rollingPolicy>
</appender>

What am I doing wrong?

Upvotes: 1

Views: 891

Answers (1)

mikeb
mikeb

Reputation: 11267

You can do this:

<file>${LOGS_PATH}/node-${env.NODE_NAME}_error.log</file>

That will take the NODE_NAME variable from the environment and use it in the filename.

Set NODE_NAME when you start your app instance and off you go.

You can also use:

<file>${LOGS_PATH}/node-${NODE_NAME}_error.log</file>

and when you run your app, do java -DNODE_NAME=node1 ... when you start.

Upvotes: 2

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