dosubot[bot] commented on issue #2581:
URL:
https://github.com/apache/incubator-hugegraph/issues/2581#issuecomment-2225129792
<!-- Answer -->
The log file defined by the `OUTPUT` variable in the `start-hugegraph-pd.sh`
script does not scroll according to the rules defined by `log4j2.xml` because
the `OUTPUT` variable is not referenced or used within the `log4j2.xml`
configuration file. The log4j2 configuration specifies log file paths using the
`${LOG_PATH}` and `${FILE_NAME}` properties, but there is no mention of an
`OUTPUT` variable.
To ensure the log file scrolls according to the rules defined in
`log4j2.xml`, you need to make sure that the `OUTPUT` variable in your script
matches the log file paths specified in the `log4j2.xml` configuration.
For example, if `OUTPUT` is intended to be the main log file, it should
match `${LOG_PATH}/${FILE_NAME}.log`:
```sh
OUTPUT="logs/hugegraph-pd.log"
```
Ensure that the script and the log4j2 configuration are aligned in terms of
log file paths. The `log4j2.xml` configuration uses the following properties
for log file paths:
```xml
<properties>
<property name="LOG_PATH">logs</property>
<property name="FILE_NAME">hugegraph-pd</property>
</properties>
```
The main log file is defined as:
```xml
<RollingRandomAccessFile name="file" fileName="${LOG_PATH}/${FILE_NAME}.log"
filePattern="${LOG_PATH}/$${date:yyyy-MM}/${FILE_NAME}-%d{yyyy-MM-dd}-%i.log"
bufferedIO="true" bufferSize="524288"
immediateFlush="false">
<ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY" />
<PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} -
%m%n" />
<Policies>
<SizeBasedTriggeringPolicy size="128MB" />
<TimeBasedTriggeringPolicy interval="1" modulate="true" />
</Policies>
<DefaultRolloverStrategy max="16">
<Delete basePath="${LOG_PATH}" maxDepth="2">
<IfFileName glob="*/*.log" />
<IfAny>
<IfAccumulatedFileSize exceeds="2GB" />
<IfAccumulatedFileCount exceeds="100" />
</IfAny>
</Delete>
</DefaultRolloverStrategy>
</RollingRandomAccessFile>
```
Make sure the `OUTPUT` variable in your script is set to
`logs/hugegraph-pd.log` to match the log file path defined in `log4j2.xml`
<sup>[[1]](https://github.com/apache/incubator-hugegraph/blob/master/hugegraph-pd/hg-pd-service/src/test/resources/log4j2.xml)</sup><sup>[[2]](https://github.com/apache/incubator-hugegraph/blob/master/hugegraph-pd/hg-pd-service/src/main/resources/log4j2.xml)</sup>.
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