本篇文章为大家展示了如何实现Spark on Yarn配置日志Web UI，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
1.进入spark目录和配置文件
[root@sht-sgmhadoopnn-01 ~]# cd /root/learnproject/app/spark/conf
[root@sht-sgmhadoopnn-01 conf]# cp spark-defaults.conf.template spark-defaults.conf
2.创建spark-history的存储日志路径为hdfs上(当然也可以在linux文件系统上)
[root@sht-sgmhadoopnn-01 conf]# hdfs dfs -ls /
Found 3 items
drwxr-xr-x - root root 0 2017-02-14 12:43 /spark
drwxrwx--- - root root 0 2017-02-14 12:58 /tmp
drwxr-xr-x - root root 0 2017-02-14 12:58 /user
You have new mail in /var/spool/mail/root
[root@sht-sgmhadoopnn-01 conf]# hdfs dfs -ls /spark
Found 1 items
drwxrwxrwx - root root 0 2017-02-15 21:44 /spark/checkpointdata
[root@sht-sgmhadoopnn-01 conf]# hdfs dfs -mkdir /spark/historylog
#在HDFS中创建一个目录，用于保存Spark运行日志信息。Spark History Server从此目录中读取日志信息
3.配置
[root@sht-sgmhadoopnn-01 conf]# vi spark-defaults.conf
spark.eventLog.enabled true
spark.eventLog.compress true
spark.eventLog.dir hdfs://nameservice1/spark/historylog
spark.yarn.historyServer.address 172.16.101.55:18080
#spark.eventLog.dir保存日志相关信息的路径，可以是hdfs://开头的HDFS路径，也可以是file://开头的本地路径，都需要提前创建
#spark.yarn.historyServer.address : Spark history server的地址(不加http://).
这个地址会在Spark应用程序完成后提交给YARN RM，然后可以在RM UI上点击链接跳转到history server UI上.
4.添加SPARK_HISTORY_OPTS参数
[root@sht-sgmhadoopnn-01 conf]# vi spark-env.sh
#!/usr/bin/env bash
export SCALA_HOME=/root/learnproject/app/scala
export JAVA_HOME=/usr/java/jdk1.8.0_111
export SPARK_MASTER_IP=172.16.101.55
export SPARK_WORKER_MEMORY=1g
export SPARK_PID_DIR=/root/learnproject/app/pid
export HADOOP_CONF_DIR=/root/learnproject/app/hadoop/etc/hadoop
export SPARK_HISTORY_OPTS="-Dspark.history.fs.logDirectory=hdfs://mycluster/spark/historylog \
-Dspark.history.ui.port=18080 \
-Dspark.history.retainedApplications=20"
5.启动服务和查看
[root@sht-sgmhadoopnn-01 spark]# ./sbin/start-history-server.sh
starting org.apache.spark.deploy.history.HistoryServer, logging to /root/learnproject/app/spark/logs/spark-root-org.apache.spark.deploy.history.HistoryServer-1-sht-sgmhadoopnn-01.out
[root@sht-sgmhadoopnn-01 ~]# jps
28905 HistoryServer
30407 ProdServerStart
30373 ResourceManager
30957 NameNode
16949 Jps
30280 DFSZKFailoverController
31445 JobHistoryServer
[root@sht-sgmhadoopnn-01 ~]# ps -ef|grep spark
root 17283 16928 0 21:42 pts/2 00:00:00 grep spark
root 28905 1 0 Feb16 ? 00:09:11 /usr/java/jdk1.8.0_111/bin/java -cp /root/learnproject/app/spark/conf/:/root/learnproject/app/spark/jars/*:/root/learnproject/app/hadoop/etc/hadoop/ -Dspark.history.fs.logDirectory=hdfs://mycluster/spark/historylog -Dspark.history.ui.port=18080 -Dspark.history.retainedApplications=20 -Xmx1g org.apache.spark.deploy.history.HistoryServer
You have new mail in /var/spool/mail/root
[root@sht-sgmhadoopnn-01 ~]# netstat -nlp|grep 28905
tcp 0 0 0.0.0.0:18080 0.0.0.0:* LISTEN 28905/java
[root@sht-sgmhadoopnn-01 ~]#
上述内容就是如何实现Spark on Yarn配置日志Web UI，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注编程网行业资讯频道。
