hadoop 开启防火墙_hadoop上搭建hive

环境

hadoop2.7.1+ubuntu 14.04hive 2.0.1集群环境namenode节点：master (hive服务端)datanode 节点：slave1,slave2(hive客户端)hive建立在hadoop的HDFS上，搭建hive前，先需搭建hadoop远程模式：101.201.81.34(Mysql server meta server安装位置)

一、101.201.81.43

该主机上安装好mysql，并且建立一个hive数据库(要开启远程访问)

二、在master上安装hive

1.安装hive

1)在apache官网上下载hive-2.1.0包2)sudo tar -zxvf apache-hive-2.1.0-bin.tar.gz3)sudo cp -R apache-hive-2.1.0-bin /home/cms/hive4)chmod -R 775 /home/cms/hive5)sudo chown -R cms /home/cms/hive

2.修改/etc/profile加入HIVE_HOME的变量

HIVE_HOME/PATH/CLASSPATH我粘贴的是我所有的配置

export JAVA_HOME=/usr/lib/jvm/java-7-openjdk-amd64export HADOOP_HOME=$HOME/hadoop-2.7.1export HIVE_HOME=$HOME/hiveexport JRE_HOME=$JAVA_HOME/jreexport CLASSPATH=$JAVA_HOME/lib:$JRE_HOME/lib:$HIVE_HOME/lib:$CLASSPATHexport PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$HIVE_HOME/bin:$PATHexport HADOOP_MAPARED_HOME=$HADOOP_HOMEexport HADOOP_COMMON_HOME=$HADOOP_HOMEexport HADOOP_HDFS_HOME=$HADOOP_HOMEexport YARN_HOME=$HADOOP_HOMEexport HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop

source /etc/profile

3.修改hive/conf下的几个template模板并重命名为其他

cp hive-env.sh.template hive-env.sh

cp hive-default.xml.template hive-site.xml

配置hive-env.sh文件，指定HADOOP_HOME安装位置 HADOOP_HOME=$HADOOP_HOME/hadoop-2.7.1

4.修改hive-site.xml文件，指定MySQL数据库驱动、数据库名、用户名及密码，修改的内容如下所示

<property><name>javax.jdo.option.ConnectionURLname><value>jdbc:mysql://101.201.81.34:3306/hive?createDatabaseIfNotExist=truevalue><description>JDBC connect string for a JDBC metastoredescription>property><property><name>javax.jdo.option.ConnectionDriverNamename><value>com.mysql.jdbc.Drivervalue><description>Driver class name for a JDBC metastoredescription>property><property><name>javax.jdo.option.ConnectionUserNamename><value>rootvalue><description>username to use against metastore databasedescription>property><property><name>javax.jdo.option.ConnectionPasswordname><value>adminvalue><description>password to use against metastore databasedescription>property><property>

其中：javax.jdo.option.ConnectionURL参数指定的是Hive连接数据库的连接字符串；

javax.jdo.option.ConnectionDriverName参数指定的是驱动的类入口名称；

javax.jdo.option.ConnectionUserName参数指定了数据库的用户名；javax.jdo.option.ConnectionPassword参数指定了数据库的密码。

5.缓存目录的问题,如果不配置也会出错的

hive.exec.local.scratchdir/opt/hivetmpLocal scratch space for Hive jobs

hive.downloaded.resources.dir/opt/hivetmpTemporary local directory for added resources in the remote file system.

并且需要对目录进行权限设定mkdir -p /opt/hivetmp chmod -R 775 /opt/hivetmp

6.下载mysql-connector-java-5.1.30-bin.jar文件，并放到$HIVE_HOME/lib目录下

可以从Mysql的官方网站下载,但是记得一定要解压呀,下载的是一个tar.gz文件,解压后为jar文件

7.hive表存储在在HDFS中的/user/hive/warehouse中

三、slave2建立hive客户端

1.将master上的整个hive目录移至slave2上scp -r hive slave2:/home/cms注意要关闭防火墙sudo ufw disable2.修改slave2下的hive-site配置文件，内容如下：

<configuration>

<property><name>hive.metastore.urisname><value>thrift://master:9083value><description>Thrift uri for the remote metastore. Used by metastore client to connect to remote metastore.description>property>

<property><name>hive.metastore.warehouse.dirname><value>hdfs://hive/warehousevalue>property>configuration>

修改/etc/profile,与master配置一致

四、启动

1.进入之前要初始化数据库(master节点)

schematool -initSchema -dbType mysql

2.hive启动

cms@master:~$ schematool -initSchema -dbType mysqlSLF4J: Class path contains multiple SLF4J bindings.SLF4J: Found binding in [jar:file:/usr/local/hive/lib/log4j-slf4j-impl-2.4.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]SLF4J: Found binding in 1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]Metastore connection URL: jdbc:mysql://101.201.81.34:3306/hive?createDatabaseIfNotExist=trueMetastore Connection Driver : com.mysql.jdbc.DriverMetastore connection User: rootStarting metastore schema initialization to 2.1.0Initialization script hive-schema-2.1.0.mysql.sqlInitialization script completedschemaTool completed```2.hive启动要启动metastore服务在master上执行hive --service metastore &[cms@master ~]$ jps10288 RunJar  #多了一个进程9365 NameNode9670 SecondaryNameNode11096 Jps9944 NodeManager9838 ResourceManager9471 DataNod

3.测试hive shell(服务端，客户端都可)

hiveshow databases;show tables;

查看hive表dfs -ls /user/hive/warehouse

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