一、下载mysql

网址：MySQL :: Download MySQL Community Server

 

二、将其上传到linux下/opt/software中

三、检查当前系统是否安装过Mysql:  

rpm -qa|grep mariadb
mariadb-libs-5.5.56-2.el7.x86_64 //如果存在通过如下命令卸载

四、rpm -e --nodeps  mariadb-libs   //用此命令卸载mariadb

五、将其解压到/opt/module下

命令为： tar -xf 要解压的文件 -C 要解压的位置

六、安装对应的rpm文件

如果报问题：

1.获取插件：

yum install -y libaio

2.执行命令（按照顺序）：

sudo rpm -ivh --nodeps mysql-community-common-5.7.36-1.el7.x86_64.rpm

sudo rpm -ivh --nodeps mysql-community-libs-5.7.36-1.el7.x86_64.rpm

sudo rpm -ivh --nodeps mysql-community-libs-compat-5.7.36-1.el7.x86_64.rpm

sudo rpm -ivh --nodeps mysql-community-client-5.7.36-1.el7.x86_64.rpm

sudo rpm -ivh --nodeps mysql-community-server-5.7.36-1.el7.x86_64.rpm

七、切换到/etc

八、cat my.cnf

九、切换到/var/lib/mysql   并删除所有文件  rm -rf  *

十、重置mysql： mysqld --initialize --user=mysql

十一、查看生成的随机密码：cat /var/log/mysqld.log

十二、启动MySQL服务 

systemctl start mysqld

十三、登录MySQL数据库

mysql -uroot -p

Enter password:   输入临时生成的密码

登录成功.

十四、必须先修改root用户的密码,否则执行其他的操作会报错

mysql> set password = password("新密码");

十五、修改mysql库下的user表中的root用户允许任意ip连接

mysql> update mysql.user set host='%' where user='root';

mysql> flush privileges;

Hive的安装

1、下载安装包：apache-hive-3.1.2-bin.tar.gz

上传至linux系统/opt/software/路径

2、解压软件

cd /opt/software/

tar -zxvf apache-hive-3.1.2-bin.tar.gz -C /opt/module/

3、修改系统环境变量

vim /etc/profile

添加内容：

export HIVE_HOME=/opt/module/apache-hive-3.1.2-bin

export PATH=$PATH:$HADOOP_HOME/sbin:$HIVE_HOME/bin

重启环境配置：

source /etc/profile

4、修改hive环境变量

cd  /opt/module/apache-hive-3.1.2-bin/bin/

编辑hive-config.sh文件

vi hive-config.sh

新增内容：

export JAVA_HOME=/opt/module/jdk1.8.0_212

export HIVE_HOME=/opt/module/apache-hive-3.1.2-bin

export HADOOP_HOME=/opt/module/hadoop-3.2.0

export HIVE_CONF_DIR=/opt/module/apache-hive-3.1.2-bin/conf

5、在/opt/module/apache-hive-3.1.2-bin/conf/创建hive-site.xml配置文件

vi hive-site.xml

6、修改Hive配置文件,找到对应的位置进行修改

 



    javax.jdo.option.ConnectionDriverName
    com.mysql.cj.jdbc.Driver
    Driver class name for a JDBC metastore
  

    javax.jdo.option.ConnectionUserName
    root
    Username to use against metastore database
  

    javax.jdo.option.ConnectionPassword
    123456
    password to use against metastore database
  

    javax.jdo.option.ConnectionURL
jdbc:mysql://192.168.1.100:3306/hive?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=GMT
    
      JDBC connect string for a JDBC metastore.
      To use SSL to encrypt/authenticate the connection, provide database-specific SSL flag in the connection URL.
      For example, jdbc:postgresql://myhost/db?ssl=true for postgres database.
    
  
  
    datanucleus.schema.autoCreateAll
    true
    Auto creates necessary schema on a startup if one doesn't exist. Set this to false, after creating it once.To enable auto create also set hive.metastore.schema.verification=false. Auto creation is not recommended for production use cases, run schematool command instead.
  

    hive.metastore.schema.verification
    false
    
      Enforce metastore schema version consistency.
      True: Verify that version information stored in is compatible with one from Hive jars.  Also disable automatic
            schema migration attempt. Users are required to manually migrate schema after Hive upgrade which ensures
            proper metastore schema migration. (Default)
      False: Warn if the version information stored in metastore doesn't match with one from in Hive jars.
    
  

    hive.exec.local.scratchdir
    /opt/module/apache-hive-3.1.2-bin/tmp/${user.name}
    Local scratch space for Hive jobs
  
  
system:java.io.tmpdir
/opt/module/apache-hive-3.1.2-bin/iotmp



  
    hive.downloaded.resources.dir
/opt/module/apache-hive-3.1.2-bin/tmp/${hive.session.id}_resources
    Temporary local directory for added resources in the remote file system.
  

    hive.querylog.location
    /opt/module/apache-hive-3.1.2-bin/tmp/${system:user.name}
    Location of Hive run time structured log file
  
  
    hive.server2.logging.operation.log.location
/opt/module/apache-hive-3.1.2-bin/tmp/${system:user.name}/operation_logs
    Top level directory where operation logs are stored if logging functionality is enabled
  
  
    hive.metastore.db.type
    mysql
    
      Expects one of [derby, oracle, mysql, mssql, postgres].
      Type of database used by the metastore. Information schema & JDBCStorageHandler depend on it.
    
  
  
    hive.cli.print.current.db
    true
    Whether to include the current database in the Hive prompt.
  
  
    hive.cli.print.header
    true
    Whether to print the names of the columns in query output.
  
  
    hive.metastore.warehouse.dir
    /opt/hive/warehouse
    location of default database for the warehouse
  

7、上传mysql驱动包到/opt/module/apache-hive-3.1.2-bin/lib/文件夹下

驱动包：mysql-connector-java-8.0.15.zip，解压后从里面获取jar包

8、确保 mysql数据库中有名称为hive的数据库

9、初始化初始化元数据库

 schematool -dbType mysql -initSchema

10、确保Hadoop启动

11、启动hive

hive

12、检测是否启动成功

show databases;