mirror of https://github.com/apache/druid.git
Merge pull request #1140 from housejester/jde-log4j2
Update docs and examples for log4j2 usage.
This commit is contained in:
Xavier Léauté
commit
49eae0fb70
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@ -6,34 +6,31 @@ Logging
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Druid nodes will emit logs that are useful for debugging to the console. Druid nodes also emit periodic metrics about their state. For more about metrics, see [Configuration](Configuration.html). Metric logs are printed to the console by default, and can be disabled with `-Ddruid.emitter.logging.logLevel=debug`.
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Druid uses [log4j](http://logging.apache.org/log4j/2.x/) for logging, and console logs can be configured by adding a log4j.xml file. Add this xml file to your classpath if you want to override default Druid log configuration.
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Druid uses [log4j2](http://logging.apache.org/log4j/2.x/) for logging. Logging can be configured with a log4j2.xml file. Add the path to the directory containing the log4j2.xml file (eg a config dir) to your classpath if you want to override default Druid log configuration. Note that this directory should be earlier in the classpath than the druid jars. The easiest way to do this is to prefix the classpath with the config dir. For example, if the log4j2.xml file is in config/_common:
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An example log4j.xml file is shown below:
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```bash
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java -Xmx512m -Duser.timezone=UTC -Dfile.encoding=UTF-8 \
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-Ddruid.realtime.specFile=examples/indexing/wikipedia.spec \
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-classpath "config/_common:config/realtime:lib/*" \
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io.druid.cli.Main server realtime
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```
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Note the "-classpath" in this example has the config dir before the jars under lib/*.
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An example log4j2.xml ships with Druid under config/_common/log4j2.xml, and a sample file is also shown below:
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```
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<?xml version="1.0" encoding="UTF-8" ?>
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<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
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<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
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<appender name="ConsoleAppender" class="org.apache.log4j.ConsoleAppender">
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<layout class="org.apache.log4j.PatternLayout">
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<param name="ConversionPattern" value="%d{ISO8601} %-5p [%t] %c - %m%n"/>
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</layout>
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</appender>
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<!-- ServerView-related stuff is way too chatty -->
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<logger name="io.druid.client.BatchServerInventoryView">
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<level value="warn"/>
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</logger>
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<logger name="io.druid.curator.inventory.CuratorInventoryManager">
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<level value="warn"/>
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</logger>
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<root>
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<priority value="info" />
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<appender-ref ref="ConsoleAppender"/>
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</root>
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</log4j:configuration>
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<Configuration status="WARN">
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<Appenders>
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<Console name="Console" target="SYSTEM_OUT">
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<PatternLayout pattern="%d{ISO8601} %p [%t] %c - %m%n"/>
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</Console>
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</Appenders>
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<Loggers>
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<Root level="info">
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<AppenderRef ref="Console"/>
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</Root>
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</Loggers>
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</Configuration>
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```
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@ -19,19 +19,19 @@ Note: If Zookeeper and metadata storage aren't running, you'll have to start the
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To start a Coordinator node:
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```bash
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath lib/*:config/_common:config/coordinator io.druid.cli.Main server coordinator
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath config/_common:config/coordinator:lib/* io.druid.cli.Main server coordinator
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```
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To start a Historical node:
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```bash
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath lib/*:config/_common:config/historical io.druid.cli.Main server historical
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath config/_common:config/historical:lib/* io.druid.cli.Main server historical
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```
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To start a Broker node:
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```bash
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath lib/*:config/_common:config/broker io.druid.cli.Main server broker
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath config/_common:config/broker:lib/* io.druid.cli.Main server broker
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```
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Querying Your Data
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@ -66,19 +66,19 @@ Note: If Zookeeper and MySQL aren't running, you'll have to start them again as
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To start the Indexing Service:
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```bash
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java -Xmx2g -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath lib/*:<hadoop_config_path>:config/_common:config/overlord io.druid.cli.Main server overlord
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java -Xmx2g -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath config/_common:config/overlord:lib/*:<hadoop_config_path> io.druid.cli.Main server overlord
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```
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To start the Coordinator Node:
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```bash
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath lib/*:config/_common:config/coordinator io.druid.cli.Main server coordinator
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath config/_common:config/coordinator:lib/* io.druid.cli.Main server coordinator
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```
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To start the Historical Node:
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```bash
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath lib/*:config/_common:config/historical io.druid.cli.Main server historical
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath config/_common:config/historical:lib/* io.druid.cli.Main server historical
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```
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#### Index the Data
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@ -169,7 +169,7 @@ druid.coordinator.startDelay=PT70s
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To start the coordinator node:
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```bash
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath lib/*:config/_common:config/coordinator io.druid.cli.Main server coordinator
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath config/_common:config/coordinator:lib/* io.druid.cli.Main server coordinator
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```
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Note: we will be running a single historical node in these examples, so you may see some warnings about not being able to replicate segments. These can be safely ignored, but in production, you should always replicate segments across multiple historical nodes.
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@ -204,7 +204,7 @@ druid.server.maxSize=10000000000
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To start the historical node:
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```bash
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath lib/*:config/_common:config/historical io.druid.cli.Main server historical
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath config/_common:config/historical:lib/* io.druid.cli.Main server historical
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```
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#### Start a Broker Node
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@ -236,7 +236,7 @@ druid.processing.numThreads=1
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To start the broker node:
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```bash
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath lib/*:config/_common:config/broker io.druid.cli.Main server broker
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java -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath config/_common:config/broker:lib/* io.druid.cli.Main server broker
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```
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#### Start a Realtime Node
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@ -282,7 +282,7 @@ Now we should be handing off segments every 6 minutes or so.
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To start the realtime node that was used in our first tutorial, you simply have to issue:
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```
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java -Xmx512m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -Ddruid.realtime.specFile=examples/wikipedia/wikipedia_realtime.spec -classpath lib/*:config/_common:config/realtime io.druid.cli.Main server realtime
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java -Xmx512m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -Ddruid.realtime.specFile=examples/wikipedia/wikipedia_realtime.spec -classpath config/_common:config/realtime:lib/* io.druid.cli.Main server realtime
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```
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The configurations are located in `config/realtime/runtime.properties` and should contain the following:
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@ -55,11 +55,11 @@ JAVA_ARGS="${JAVA_ARGS} -Ddruid.realtime.specFile=${SPEC_FILE}"
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DRUID_CP=${EXAMPLE_LOC}
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#For a pull
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DRUID_CP=${DRUID_CP}:${SCRIPT_DIR}/../config/realtime
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DRUID_CP=${SCRIPT_DIR}/../config/realtime:${DRUID_CP}
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#For the kit
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DRUID_CP=${DRUID_CP}:${SCRIPT_DIR}/lib/*
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DRUID_CP=${DRUID_CP}:${SCRIPT_DIR}/config/_common
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DRUID_CP=${DRUID_CP}:${SCRIPT_DIR}/config/realtime
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DRUID_CP=${DRUID_CP}:${SCRIPT_DIR}/lib/*
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echo "Running command:"
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@ -0,0 +1,30 @@
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<?xml version="1.0" encoding="UTF-8" ?>
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<!--
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~ Druid - a distributed column store.
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~ Copyright 2012 - 2015 Metamarkets Group Inc.
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~
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~ Licensed under the Apache License, Version 2.0 (the "License");
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~ you may not use this file except in compliance with the License.
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~ You may obtain a copy of the License at
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~
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~ http://www.apache.org/licenses/LICENSE-2.0
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~
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~ Unless required by applicable law or agreed to in writing, software
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~ distributed under the License is distributed on an "AS IS" BASIS,
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~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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~ See the License for the specific language governing permissions and
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~ limitations under the License.
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-->
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<Configuration status="WARN">
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<Appenders>
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<Console name="Console" target="SYSTEM_OUT">
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<PatternLayout pattern="%d{ISO8601} %p [%t] %c - %m%n"/>
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</Console>
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</Appenders>
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<Loggers>
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<Root level="info">
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<AppenderRef ref="Console"/>
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</Root>
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</Loggers>
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</Configuration>
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@ -15,7 +15,7 @@
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* limitations under the License.
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*/
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package io.druid.guice;;
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package io.druid.guice;
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import com.google.common.base.Charsets;
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import com.google.common.base.Throwables;
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