前言
前面介绍了Hive的基本环境安装,Hive环境中的Metastore默认存储在自带的derby数据库中,推荐使用MySQL存储Metastore,本篇将介绍安装MySQL来存储MetaStore;
一、MySql安装
1、安装包准备
1)查看mysql是否安装,如果安装了,卸载mysql
(1)查看
# rpm -qa|grep mysql
例如可能会展示出类似这样的名称:mysql-libs-5.1.73-7.el6.x86_64
(2)卸载
卸载通过yum安装的Mysql:
# yum remove mysql mysql-server mysql-libs mysql-server;
找到Mysql相关的东西:
# find / -name mysql
查询Mysql相关的rmp安装包:
# rpm -qa|grep mysql
执行卸载:
# rpm -e mysql相关文件
rpm -ev –nodeps mysql相关文件
2)解压mysql-libs.zip文件到当前目录
[root@linux01 software]$ unzip mysql-libs.zip
[root@linux01 software]$ ls
mysql-libs.zip
mysql-libs
3)进入到mysql-libs文件夹下,并设置当前用户执行权限
[root@linux01 mysql-libs]# ll
总用量 76048
-rw-r--r--. 1 root root 18509960 3月 26 2015 MySQL-client-5.6.24-1.el6.x86_64.rpm
-rw-r--r--. 1 root root 3575135 12月 1 2013 mysql-connector-java-5.1.27.tar.gz
-rw-r--r--. 1 root root 55782196 3月 26 2015 MySQL-server-5.6.24-1.el6.x86_64.rpm
[root@linux01 mysql-libs]# chmod u+x ./*
[root@linux01 mysql-libs]# ll
总用量 76048
-rwxr--r--. 1 root root 18509960 3月 26 2015 MySQL-client-5.6.24-1.el6.x86_64.rpm
-rwxr--r--. 1 root root 3575135 12月 1 2013 mysql-connector-java-5.1.27.tar.gz
-rwxr--r--. 1 root root 55782196 3月 26 2015 MySQL-server-5.6.24-1.el6.x86_64.rpm
2、安装MySql服务器
1)安装mysql服务端
[root@linux01 mysql-libs]# rpm -ivh MySQL-server-5.6.24-1.el6.x86_64.rpm
2)查看产生的随机密码
[root@linux01 mysql-libs]# cat /root/.mysql_secret
OEXaQuS8IWkG19Xs
3)查看mysql状态
[root@linux01 mysql-libs]# service mysql status
4)启动mysql
[root@linux01 mysql-libs]# service mysql start
3 安装MySql客户端
1)安装mysql客户端
[root@linux01 mysql-libs]# rpm -ivh MySQL-client-5.6.24-1.el6.x86_64.rpm
2)链接mysql
[root@linux01 mysql-libs]# mysql -uroot -pOEXaQuS8IWkG19Xs
3)修改密码
mysql>SET PASSWORD=PASSWORD(123456);
4)退出mysql
mysql>exit
4、MySql中user表中主机配置
配置只要是root用户+密码,在任何主机上都能登录MySQL数据库。
1)进入mysql
[root@linux01 mysql-libs]# mysql -uroot -p123456
2)显示数据库
mysql>show databases;
3)使用mysql数据库
mysql>use mysql;
4)展示mysql数据库中的所有表
mysql>show tables;
5)展示user表的结构
mysql>desc user;
6)查询user表
mysql>select User, Host, Password from user;
7)修改user表,把Host表内容修改为%
mysql>update user set host='%' where user='root' and host='localhost';
8)删除root用户的其他host
mysql>delete from user where User='root'and Host='linux01';
mysql>delete from user where User='root'and Host='127.0.0.1';
mysql>delete from user where User='root'and Host='::1';
9)刷新
mysql>flush privileges;
10)退出
mysql> exit;
5、Hive元数据配置到MySql
5.1驱动拷贝
1)在/opt/software/mysql-libs目录下解压mysql-connector-java-5.1.27.tar.gz驱动包
[root@linux01 mysql-libs]# tar -zxvf mysql-connector-java-5.1.27.tar.gz
2)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/
[root@linux01 mysql-connector-java-5.1.27]# cp mysql-connector-java-5.1.27-bin.jar /opt/module/hive/lib/
5.2 配置Metastore到MySql
1)在/opt/module/hive/conf目录下创建一个hive-site.xml
[root@linux01 conf]# touch hive-site.xml
[root@linux01 conf]# vi hive-site.xml
在hive-site.xml文件中输入任意字符后保存(保证编码)
2)从hive-default.xml.template拷贝信息到hive-site.xml文件
3)根据官方文档配置参数
https://cwiki.apache.org/confluence/display/Hive/AdminManual+MetastoreAdmin
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
<property>
<name>javax.jdo.option.ConnectionURL</name>
<value>jdbc:mysql://linux01:3306/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>
<property>
<name>hive.querylog.location</name>
<value>/home/admin/modules/apache-hive-1.2.2-bin/iotmp</value>
</property>
<property>
<name>hive.exec.local.scratchdir</name>
<value>/home/admin/modules/apache-hive-1.2.2-bin/iotmp</value>
</property>
<property>
<name>hive.downloaded.resources.dir</name>
<value>/home/admin/modules/apache-hive-1.2.2-bin/iotmp</value>
</property>
<property>
<name>hive.metastore.schema.verification</name>
<value>false</value>
</property>
</configuration>
4)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)
5.3 多窗口启动Hive测试
1)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 |
+--------------------+
2)再次打开多个窗口,分别启动hive
$ bin/hive
3)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 |
+--------------------+
到这里,安装MySQL来存储MetaStore已完成!