[FLINK-36192][log] instruct how to change log level dynamically

Author: showuon

docs/content.zh/docs/operations/metrics-logging.md

@@ -193,9 +193,13 @@ defaultConfiguration:
   log4j-operator.properties: |+
     # Flink Operator Logging Overrides
     # rootLogger.level = DEBUG
+    # Uncomment this if you want to allow dynamically change logging level
+    # monitorInterval = 30
   log4j-console.properties: |+
     # Flink Deployment Logging Overrides
     # rootLogger.level = DEBUG
+    # Uncomment this if you want to allow dynamically change logging level
+    # monitorInterval = 30
 ```
 
 {{< hint info >}}

docs/content/docs/operations/metrics-logging.md

@@ -193,9 +193,13 @@ defaultConfiguration:
   log4j-operator.properties: |+
     # Flink Operator Logging Overrides
     # rootLogger.level = DEBUG
+    # Uncomment this if you want to allow dynamically change logging level
+    # monitorInterval = 30
   log4j-console.properties: |+
     # Flink Deployment Logging Overrides
     # rootLogger.level = DEBUG
+    # Uncomment this if you want to allow dynamically change logging level
+    # monitorInterval = 30
 ```
 
 {{< hint info >}}

helm/flink-kubernetes-operator/conf/log4j-console.properties

@@ -60,3 +60,6 @@ appender.rolling.strategy.max = 10
 # 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
+
+# Uncomment this if you want to allow dynamically change logging level
+# monitorInterval = 30

helm/flink-kubernetes-operator/conf/log4j-operator.properties

@@ -32,3 +32,6 @@ logger.conf.level = WARN
 # Avoid logging fallback key INFO messages
 logger.conf.name = org.apache.flink.configuration.Configuration
 logger.conf.level = WARN
+
+# Uncomment this if you want to allow dynamically change logging level
+# monitorInterval = 30