centos7安装mysql以及hive3.1.2

1.安装mysql：yum源安装

1.1安装MySQL镜像

1.2下载

wget http://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm

1.3安装mysql镜像

yum install mysql57-community-release-el7-11.noarch.rpm

1.4安装mysql服务，安装时间很长（慢慢等待）

yum install mysql-community-server

1.5安装结束

systemctl status mysqld.service

1.6启动mysql

systemctl start mysqld.service

1.7查看mysql初始化密码

grep "password" /var/log/mysqld.log

1.8root登入mysql

mysql -uroot -p

注意：密码是刚才查询出来的

1.9更改root密码

ALTER USER 'root'@'localhost' IDENTIFIED BY 'Root@123456';
注意：这一步必不可少：大小写、特殊字符、8位以上

1.10更改远程访问

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

FLUSH PRIVILEGES;

1.11开机启动

systemctl enable mysqld

systemctl daemon-reload

1.12更改mysql的密码策略

#查看密码策略
show variables like '%validate_password_policy%';
show variables like '%validate_password_length%';
#修改密码策略
set global validate_password_policy=0;
set global validate_password_length=1;

1.13新建hive用户

create user 'hive'@'%' identified by 'hive';

顺便更改root密码

#远程

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

和

#本地

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

FLUSH PRIVILEGES;

1.14新建hive的db

root用户登入

#给hive用的数据库

create database db_hive;

授权给mysql用户hive

GRANT ALL ON *.* TO 'hive'@'%';

flush privileges;

2.安装hive

2.1下载并解压hive

sudo tar -zxvf apache-hive-3.1.2-bin.tar.gz -C /usr/local/
重命名

mv apache-hive-3.1.2-bin/ hive

2.2环境变量

#hive
export HIVE_HOME=/usr/local/hive/
export PATH=$PATH:$HIVE_HOME/bin

执行：

source /etc/profile.d/hadoop03.sh

echo $HIVE_HOME

有打印结果说明环境变量生效了

2.3查看版本

hive --version

2.4更改配置

进入hive的conf目录如：cd /usr/local/hive/conf

vim hive-site.xml

增加配置

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
<property>
<name>javax.jdo.option.ConnectionURL</name>
<value>jdbc:mysql://localhost:3306/db_hive</value>
</property>
<property>
<name>javax.jdo.option.ConnectionDriverName</name>
<value>com.mysql.jdbc.Driver</value>
</property>
<property>
<name>javax.jdo.option.ConnectionUserName</name>
<value>hive</value>
</property>
<property>
<name>javax.jdo.option.ConnectionPassword</name>
<value>hive</value>
</property>
<property>
<name>hive.metastore.schema.verification</name>
<value>false</value>
</property>
</configuration>

hadoop01可以改为localhost

注意更改数据：用户名、密码、库名

2.5下载msql连接的jar包

进入hive的lib文件夹下边

wget http://central.maven.org/maven2/mysql/mysql-connector-java/5.1.47/mysql-connector-java-5.1.47.jar

2.6初始化hive的数据

进入hive的bin目录如：cd /usr/local/hive/bin

执行：

schematool -dbType mysql -initSchema

如果报错

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/usr/local/hive/lib/log4j-slf4j-impl-2.10.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.25.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.apache.logging.slf4j.Log4jLoggerFactory]
Exception in thread "main" java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkArgument(ZLjava/lang/String;Ljava/lang/Object;)V
	at org.apache.hadoop.conf.Configuration.set(Configuration.java:1357)
	at org.apache.hadoop.conf.Configuration.set(Configuration.java:1338)
	at org.apache.hadoop.mapred.JobConf.setJar(JobConf.java:536)
	at org.apache.hadoop.mapred.JobConf.setJarByClass(JobConf.java:554)
	at org.apache.hadoop.mapred.JobConf.<init>(JobConf.java:448)
	at org.apache.hadoop.hive.conf.HiveConf.initialize(HiveConf.java:5141)
	at org.apache.hadoop.hive.conf.HiveConf.<init>(HiveConf.java:5104)
	at org.apache.hive.beeline.HiveSchemaTool.<init>(HiveSchemaTool.java:96)
	at org.apache.hive.beeline.HiveSchemaTool.main(HiveSchemaTool.java:1473)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at org.apache.hadoop.util.RunJar.run(RunJar.java:323)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:236)

则是guava.jar的问题hadoop和hive的版本不一致，删除低版本拷贝高版本

hive：guava-19.0.jar
hadoop：guava-27.0-jre.jar

（cd /usr/local/hadoop/share/hadoop/common/lib）

拷贝高版本到hive：

cp guava-27.0-jre.jar /usr/local/hive/lib/

#备份

mv guava-19.0.jar guava-19.0.jar.backup

再次执行：schematool -dbType mysql -initSchema

输出：