Hadoop Hive installation

1. Embedded mode installation

1. Download the Hive installation package
https://archive.apache.org/dist/hive/hive-1.2.1/
2. Upload it to /root/export/software/
rz apache-hive-1.2.1-bin.tar. gz
3. Unzip

tar apache-hive-1.2.1-bin.tar.gz -C /root/export/servers/
cd /root/export/servers/apache-hive-1.2.1-bin

4. Start

bin/hive

The effect is as follows:
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5. Check the database

show databases;

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Two: local mode installation

1. Install mysql online

yum install mysql mysql-server mysql-devel

# Append the following command:
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wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
rpm -ivh mysql-community-release-el7-5.noarch.rpm
yum install mysql-server

# start mysql

service mysqld start/stop/status

Enter mysql;
set password:

use mysql;
Update user SET Password=PASSWORD('123456') Where User='root';

#Set to allow remote access

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;

# refresh write

FLUSH PRIVILEGES;

2. Hive configuration
(1), modify the hive-env.sh configuration file, and configure hadoop environment variables

cd /root/export/servers/apache-hive-1.2.1-bin/conf/
cp hive-env.sh.template hive-env.sh

(2) Modify the hadoop directory

vim hive-env.sh
HADOOP_HOME=/root/export/servers/hadoop-2.7.4

(3), create hive-site.xml configuration

<configuration>
        <property>
                <name>javax.jdo.option.ConnectionURL</name>
                <value>jdbc:mysql://localhost:3306/hive?createDatabaseIfNotExist=true</value>
                <description>Mysql连接协议</description>
        </property>
                <property>
                <name>javax.jdo.option.ConnectionDriverName</name>
                <value>com.mysql.jdbc.Driver</value>
                <description>Mysql连接协议</description>
        </property>
        <property>
                <name>javax.jdo.option.ConnectionUserName</name>
                <value>root</value>
                <description>用户名</description>
        </property>
        <property>
                <name>javax.jdo.option.ConnectionPassword</name>
                <value>123456</value>
                <description>密码</description>
        </property>
</configuration>

(4), upload mysql-connector-java-5.1.32.jar to the bin directory of hive

cd /root/export/servers/apache-hive-1.2.1-bin/bin
rz mysql-connector-java-5.1.32.jar

Remarks after the installation is complete
: If you use the remote mode installation method, you only need to modify the localhost in the hive-site.xml configuration to have the MySQL service node IP, so that no matter what path the user uses to start the Hive client, they can access the same metadata information.