Hive学习之Hive的安装配置完毕后，如果启动hive异常，可以重新启动虚拟机。（重启后，别忘了启动hadoop集群）

Hive安装及配置

Hadoop集群配置

把apache-hive-1.2.1-bin.tar.gz上传到linux的/opt/software目录下
解压apache-hive-1.2.1-bin.tar.gz到/opt/module/目录下面

tar -zxvf apache-hive-1.2.1-bin.tar.gz -C /opt/module/

修改apache-hive-1.2.1-bin.tar.gz的名称为hive

mv apache-hive-1.2.1-bin/ hive

修改/opt/module/hive/conf目录下的hive-env.sh.template名称为hive-env.sh

mv hive-env.sh.template hive-env.sh

配置hive-env.sh文件

export HADOOP_HOME=/opt/module/hadoop-2.7.2
export HIVE_CONF_DIR=/opt/module/hive/conf

Hadoop集群配置

必须启动hdfs和yarn

sbin/start-dfs.sh
sbin/start-yarn.sh

在HDFS上创建/tmp和/user/hive/warehouse两个目录并修改他们的同组权限可写

bin/hadoop fs -mkdir /tmp
bin/hadoop fs -mkdir -p /user/hive/warehouse
bin/hadoop fs -chmod g+w /tmp
bin/hadoop fs -chmod g+w /user/hive/warehouse

MySQL安装

查看mysql是否安装,如果安装了,卸载mysql

查看
rpm -qa|grep mysql
卸载
rpm -e --nodeps mysql-libs-5.1.73-7.el6.x86_64

解压mysql-libs.zip文件到当前目录

unzip mysql-libs.zip
ll

进入到mysql-libs文件夹下

cd  mysql-libs

安装mysql服务器

rpm -ivh MySQL-server-5.6.24-1.el6.x86_64.rpm

查看产生的随机密码

cat /root/.mysql_secret

查看mysql状态

service mysql status

启动mysql

service mysql start

安装mysql客户端

rpm -ivh MySQL-client-5.6.24-1.el6.x86_64.rpm

链接mysql

mysql -uroot -pOEXaQuS8IWkG19Xs

修改密码

SET PASSWORD=PASSWORD('000000');

退出mysql

exit

进入mysql

mysql -uroot -p123456

显示数据库

show databases;

使用mysql数据库

use mysql;

展示mysql数据库中的所有表

show tables;

展示user表的结构

desc user;

查询user表

select User, Host, Password from user;

修改user表,把host表内容修改为%

update user set host='%' where host='localhost';

删除root用户的其他host

mysql>delete from user where Host='hadoop101';
mysql>delete from user where Host='127.0.0.1';
mysql>delete from user where Host='::1';

刷新

flush privileges;

退出

quit

Hive元数据配置到MySQL

1.在/opt/software/mysql-libs目录下解压mysql-connector-java-5.1.27.tar.gz驱动包

tar -zxvf mysql-connector-java-5.1.27.tar.gz

拷贝/opt/software/mysql-libs/mysql-connector-java-5.1.27目录下的mysql-connector-java-5.1.27-bin.jar到/opt/module/hive/lib/

cp mysql-connector-java-5.1.27-bin.jar
 /opt/module/hive/lib/

在/opt/module/hive/conf目录下创建一个hive-site.xml

touch hive-site.xml
vi hive-site.xml

根据官方文档配置参数，拷贝数据到hive-site.xml文件中 cwiki.apache.org/confluence/…

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
	<property>
	  <name>javax.jdo.option.ConnectionURL</name>
	  <value>jdbc:mysql://hadoop101:3306/metastore?createDatabaseIfNotExist=true</value>
	  <description>JDBC connect string for a JDBC metastore</description>
	</property>

	<property>
	  <name>javax.jdo.option.ConnectionDriverName</name>
	  <value>com.mysql.jdbc.Driver</value>
	  <description>Driver class name for a JDBC metastore</description>
	</property>

	<property>
	  <name>javax.jdo.option.ConnectionUserName</name>
	  <value>root</value>
	  <description>username to use against metastore database</description>
	</property>

	<property>
	  <name>javax.jdo.option.ConnectionPassword</name>
	  <value>123456</value>
	  <description>password to use against metastore database</description>
	</property>
</configuration>

配置完毕后，如果启动hive异常，可以重新启动虚拟机。（重启后，别忘了启动hadoop集群）
先启动MySQL

mysql -uroot -p123456

查看有几个数据库

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql             |
| performance_schema |
| test               |
+--------------------+

再次打开多个窗口,分别启动hive

bin/hive

启动hive后，回到MySQL窗口查看数据库，显示增加了metastore数据库

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| metastore          |
| mysql             |
| performance_schema |
| test               |
+--------------------+

此时hive安装完成!

Hive学习之Hive的安装

Hive官方网站

文档查看地址

下载地址

github地址

Hive安装及配置

Hadoop集群配置

Hadoop集群配置

MySQL安装

Hive元数据配置到MySQL