Spark教程——(1)安装Spark
Cloudera Manager介绍
CM技术架构
Management Service:由一组执行各种监控,警报和报告功能角色的服务。
Database:存储配置和监视信息。通常情况下,多个逻辑数据库在一个或多个数据库服务器上运行。例如,Cloudera的管理服务器和监控角色使用不同的逻辑数据库。
Cloudera Repository:软件由Cloudera 管理分布存储库。
Clients:是用于与服务器进行交互的接口:
Admin Console :基于Web的用户界面与管理员管理集群和Cloudera管理。
API :与开发人员创建自定义的Cloudera Manager应用程序的API。

CM四大功能
管理:对集群进行管理,如添加、删除节点等操作。
监控:监控集群的健康情况,对设置的各种指标和系统运行情况进行全面监控。
诊断:对集群出现的问题进行诊断,对出现的问题给出建议解决方案。
集成:对hadoop的多组件进行整合。
需要安装的组件
Cloudera Manager
CDH
JDK
Mysql(主节点) + JDBC
需要注意的是CDH的版本需要等于或者小于CM的版本
相关的设置
主机名和hosts文件
关闭防火墙
ssh无密码登陆
配置NTP服务
关闭SElinux状态
配置集群
配置数据库
一些安装过程
主节点安装cloudera manager
把我们下载好的cloudera-manager-*.tar.gz包和mysql驱动包mysql-connector-java-*-bin.jar放到主节点cm0的/opt中。
Cloudera Manager建立数据库
使用命令 cp mysql-connector-java-5.1.40-bin.jar /opt/cm-5.8.2/share/cmf/lib/ 把mysql-connector-java-5.1.40-bin.jar放到/opt/cm-5.8.2/share/cmf/lib/中。
使用命令 /opt/cm-5.8.2/share/cmf/schema/scm_prepare_database.sh mysql cm -h cm0 -u root -p 123456 --scm-host cm0 scm scm scm 在主节点初始化CM5的数据库。
实际位置:/usr/share/cmf/schema/scm_prepare_database.sh
Agent配置
使用命令 vim /opt/cm-5.8.2/etc/cloudera-scm-agent/config.ini 主节点修改agent配置文件。
在主节点cm0用命令 scp -r /opt/cm-5.8.2 root@cm1:/opt/ 同步Agent到其他所有节点。
实际位置:/etc/cloudera-scm-agent/config.ini
在所有节点创建cloudera-scm用户
使用命令 useradd --system --home=/opt/cm-5.8.2/run/cloudera-scm-server/ --no-create-home --shell=/bin/false --comment "Cloudera SCM User" cloudera-scm
启动cm和agent
主节点cm0通过命令 /opt/cm-5.8.2/etc/init.d/cloudera-scm-server start 启动服务端。
所有节点通过命令 /opt/cm-5.8.2/etc/init.d/cloudera-scm-agent start 启动Agent服务。(所有节点都要启动Agent服务,包括服务端)
Cloudera Manager Server和Agent都启动以后,就可以进行尝试访问了。http://master:7180/cmf/login
实际位置:/etc/rc.d/init.d/cloudera-scm-server 和 /etc/rc.d/init.d/cloudera-scm-agent
补充:/etc/init.d 是 /etc/rc.d/init.d 的软链接(soft link)。/etc/init.d里的shell脚本能够响应start,stop,restart,reload命令来管理某个具体的应用。比如经常看到的命令: /etc/init.d/networking start
这些脚本也可被其他trigger直接激活执行,这些trigger被软连接在/etc/rcN.d/中。这些原理似乎可以用来写daemon程序,让某些程序在开关机时运行。
CDH的安装和集群配置
安装parcel,安装过程中有什么问题,可以用 /opt/cm-5.8.2/etc/init.d/cloudera-scm-agent status , /opt/cm-5.8.2/etc/init.d/cloudera-scm-server status 查看服务器客户端状态。
也可以通过 /var/log/cloudera-scm-server/cloudera-scm-server.log , /var/log/cloudera-scm-agent/cloudera-scm-agent.log 查看日志。
如果上面的路径找不到则在日志文件夹"/opt/cm-5.8.2/log"查看日志,里面包含server和agent的log,使用命令如下:
tail -f /opt/cm-5.8.2/log/cloudera-scm-server/cloudera-scm-server.log
tail -f /opt/cm-5.8.2/log/cloudera-scm-agent/cloudera-scm-agent.log
实际位置: /var/log/cloudera-scm-server/cloudera-scm-server.log 和 /var/log/cloudera-scm-agent/cloudera-scm-agent.log
遇到的一些问题
问题一:
[root@node1 ~]# spark-shell Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/fs/FSDataInputStream at org.apache.spark.deploy.SparkSubmitArguments$$anonfun$mergeDefaultSparkProperties$.apply(SparkSubmitArguments.scala:) at org.apache.spark.deploy.SparkSubmitArguments$$anonfun$mergeDefaultSparkProperties$.apply(SparkSubmitArguments.scala:) at scala.Option.getOrElse(Option.scala:) at org.apache.spark.deploy.SparkSubmitArguments.mergeDefaultSparkProperties(SparkSubmitArguments.scala:) at org.apache.spark.deploy.SparkSubmitArguments.<init>(SparkSubmitArguments.scala:) at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:) at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala) Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.fs.FSDataInputStream at java.net.URLClassLoader.findClass(URLClassLoader.java:) at java.lang.ClassLoader.loadClass(ClassLoader.java:) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:) at java.lang.ClassLoader.loadClass(ClassLoader.java:) ... more
查找spark-env.sh文件的位置:
[root@node1 /]# find / -name spark-env.sh ’: No such file or directory /run/cloudera-scm-agent/process/-spark2_on_yarn-SPARK2_YARN_HISTORY_SERVER/aux/client/spark-env.sh /run/cloudera-scm-agent/process/-spark2_on_yarn-SPARK2_YARN_HISTORY_SERVER/spark2-conf/spark-env.sh …… /run/cloudera-scm-agent/process/-spark_on_yarn-SPARK_YARN_HISTORY_SERVER-SparkUploadJarCommand/aux/client/spark-env.sh /run/cloudera-scm-agent/process/-spark_on_yarn-SPARK_YARN_HISTORY_SERVER-SparkUploadJarCommand/spark-conf/spark-env.sh /gvfs’: Permission denied /etc/spark/conf.cloudera.spark_on_yarn/spark-env.sh /etc/spark2/conf.cloudera.spark2_on_yarn/spark-env.sh /opt/cloudera/parcels/CDH--.cdh5./etc/spark/conf.dist/spark-env.sh
打开 /etc/spark2/conf.cloudera.spark2_on_yarn/spark-env.sh ,查看到一些内容:
export SPARK_HOME=/opt/cloudera/parcels/SPARK2-.cloudera4-.cdh5./lib/spark2 export HADOOP_HOME=/opt/cloudera/parcels/CDH--.cdh5./lib/hadoop export SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:$(paste -sd: "$SELF/classpath.txt")"
并在文件的最后追加内容:
export SPARK_DIST_CLASSPATH=$(hadoop classpath)
问题没有解决!
打开 /opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/etc/spark/conf.dist/spark-env.sh ,查看到一些内容:
export STANDALONE_SPARK_MASTER_HOST=`hostname` export SPARK_MASTER_IP=$STANDALONE_SPARK_MASTER_HOST export SPARK_MASTER_PORT= export SPARK_WORKER_PORT= export SPARK_WORKER_DIR=/var/run/spark/work export SPARK_LOG_DIR=/var/log/spark export SPARK_PID_DIR='/var/run/spark/' SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:$SPARK_LIBRARY_PATH/spark-assembly.jar" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/usr/lib/hadoop/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/usr/lib/hadoop/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/usr/lib/hadoop-hdfs/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/usr/lib/hadoop-hdfs/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/usr/lib/hadoop-mapreduce/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/usr/lib/hadoop-mapreduce/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/usr/lib/hadoop-yarn/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/usr/lib/hadoop-yarn/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/usr/lib/hive/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/usr/lib/flume-ng/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/usr/lib/parquet/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/usr/lib/avro/*"
在 /etc/spark2/conf.cloudera.spark2_on_yarn/spark-env.sh 文件的末尾追加以下内容:
SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/spark/lib/spark-assembly.jar" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop-hdfs/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop-hdfs/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop-mapreduce/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop-mapreduce/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop-yarn/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop-yarn/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hive/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/flume-ng/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/parquet/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/avro/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/jars/*" export SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/jars/*"
问题依然没有解决!
在 /opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/etc/spark/conf.dist/spark-env.sh 文件的末尾追加以下内容:
SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/spark/lib/spark-assembly.jar" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop-hdfs/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop-hdfs/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop-mapreduce/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop-mapreduce/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop-yarn/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop-yarn/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hive/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/flume-ng/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/parquet/lib/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/avro/*" SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/jars/*" export SPARK_DIST_CLASSPATH="$SPARK_DIST_CLASSPATH:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/jars/*"
问题解决!执行命令 spark-shell ,返回信息如下:
[root@node1 ~]# spark-shell Setting default log level to "WARN". To adjust logging level use sc.setLogLevel(newLevel). SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding -.cdh5./jars/slf4j-log4j12-.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding -.cdh5./jars/avro-tools--cdh5.14.2.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding -.cdh5./jars/pig--cdh5.14.2.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding -.cdh5./jars/slf4j-simple-.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory] Welcome to ____ __ / __/__ ___ _____/ /__ _\ \/ _ \/ _ `/ __/ '_/ /___/ .__/\_,_/_/ /_/\_\ version /_/ Using Scala version (Java HotSpot(TM) -Bit Server VM, Java 1.8.0_131) Type in expressions to have them evaluated. Type :help for more information. Spark context available as sc (master = local[*], app ). // :: WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable SQL context available as sqlContext. scala>
执行Spark自带的案例程序:
spark-submit --class org.apache.spark.examples.SparkPi --executor-memory 500m --total-executor-cores /opt/cloudera/parcels/SPARK2-.cloudera4-.cdh5./lib/spark2/examples/jars/spark-examples_2.-.cloudera4.jar
返回信息如下:
[root@node1 ~]# spark-submit --class org.apache.spark.examples.SparkPi --executor-memory 500m --total-executor-cores /opt/cloudera/parcels/SPARK2-.cloudera4-.cdh5./lib/spark2/examples/jars/spark-examples_2.-.cloudera4.jar SLF4J: Class path contains multiple SLF4J bindings. …… // :: INFO Remoting: Remoting started; listening on addresses :[akka.tcp://sparkDriverActorSystem@10.200.101.131:38370] // :: INFO ui.SparkUI: Started SparkUI at http://10.200.101.131:4040 // :: INFO spark.SparkContext: Added JAR .cloudera4-.cdh5./lib/spark2/examples/jars/spark-examples_2.-.cloudera4.jar at spark://10.200.101.131:37025/jars/spark-examples_2.11-2.1.0.cloudera4.jar with timestamp 1556186427964 // :: INFO scheduler.DAGScheduler: Got job (reduce at SparkPi.scala:) with output partitions // :: INFO scheduler.DAGScheduler: Final stage: ResultStage (reduce at SparkPi.scala:) // :: INFO executor.Executor: Fetching spark://10.200.101.131:37025/jars/spark-examples_2.11-2.1.0.cloudera4.jar with timestamp 1556186427964 // :: INFO util.Utils: Fetching spark://10.200.101.131:37025/jars/spark-examples_2.11-2.1.0.cloudera4.jar to /tmp/spark-c8bb0344-ce1a-4acc-98d8-dfdebd6b95d6/userFiles-c39c4a70-c9b0-40f7-b48f-cf0f4d46042e/fetchFileTemp8308576688554785370.tmp // :: INFO executor.Executor: Adding -.cloudera4.jar to class loader …… Pi is roughly 3.134555672778364 …… // :: INFO ui.SparkUI: Stopped Spark web UI at http://10.200.101.131:4040 // :: INFO spark.MapOutputTrackerMasterEndpoint: MapOutputTrackerMasterEndpoint stopped! // :: INFO storage.MemoryStore: MemoryStore cleared // :: INFO storage.BlockManager: BlockManager stopped // :: INFO storage.BlockManagerMaster: BlockManagerMaster stopped // :: INFO scheduler.OutputCommitCoordinator$OutputCommitCoordinatorEndpoint: OutputCommitCoordinator stopped! // :: INFO spark.SparkContext: Successfully stopped SparkContext // :: INFO util.ShutdownHookManager: Shutdown hook called // :: INFO util.ShutdownHookManager: Deleting directory /tmp/spark-c8bb0344-ce1a-4acc-98d8-dfdebd6b95d6
从上面的信息可以看出,案例程序的运算结果为“Pi is roughly 3.134555672778364”
参考:
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