Flink 1.13.1使用log4j.properties定義了jobmanager、taskmanager等的日志輸出：
# Allows this configuration to be modified at runtime. The file will be checked every 30 seconds. monitorInterval=30 # This affects logging for both user code and Flink rootLogger.level = INFO rootLogger.appenderRef.file.ref = MainAppender # Uncomment this if you want to _only_ change Flink's logging #logger.flink.name = org.apache.flink #logger.flink.level = INFO # The following lines keep the log level of common libraries/connectors on # log level INFO. The root logger does not override this. You have to manually # change the log levels here. logger.akka.name = akka logger.akka.level = INFO logger.kafka.name= org.apache.kafka logger.kafka.level = INFO logger.hadoop.name = org.apache.hadoop logger.hadoop.level = INFO logger.zookeeper.name = org.apache.zookeeper logger.zookeeper.level = INFO # Log all infos in the given file appender.rolling.name = MainAppender appender.rolling.type = RollingFile appender.rolling.append = false appender.rolling.fileName = ${sys:log.file} appender.rolling.filePattern = ${sys:log.file}.%i appender.rolling.layout.type = PatternLayout appender.rolling.layout.pattern = %d{yyyy-MM-dd HH:mm:ss,SSS} %-5p %-60c %x - %m%n appender.rolling.policies.type = Policies appender.rolling.policies.size.type = SizeBasedTriggeringPolicy appender.rolling.policies.size.size = 50MB appender.rolling.strategy.type = DefaultRolloverStrategy appender.rolling.strategy.max = 7 # Suppress the irrelevant (wrong) warnings from the Netty channel handler logger.netty.name = org.apache.flink.shaded.akka.org.jboss.netty.channel.DefaultChannelPipeline logger.netty.level = OFF
日志文件的輸出路徑，使用了變量${sys:log.file}的值，默認輸出到了Flink安裝路徑下的log目錄下。
由於Flink一般安裝在系統盤，這種日志配置，存在把磁盤打爆的隱患，因此需要調整日志輸出文件的路徑。
經過查詢Flink官方的配置文檔，可以在flink-conf.yaml中增加如下配置以調整日志文件的輸出目錄：
配置項：env.log.dir 配置項說明：Defines the directory where the Flink logs are saved.
It has to be an absolute path.
(Defaults to the log directory under Flink’s home)
比如：
