CDH集群安裝配置（四）- mysql 的安裝

1. 安裝mysql，并且創建相關的表（只需要在chd1上面安裝而且需要root權限）1.1

• 查看Centos自帶mysql是否已經安裝

  yum list installed | grep mysql

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• 卸載自帶mariadb

# rpm -qa | grep mariadb
mariadb-libs-5.5.41-2.el7_0.x86_64
# rpm -e --nodeps mariadb-libs-5.5.41-2.el7_0.x86_64

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• 如果系統的mysql已經安裝，卸載

yum -y remove mysql-libs.x86_64
若有依賴關系，卸載依賴的包，知道顯示結果complete

• 查看yum庫上的mysql版本信息(CentOS系統需要正常連接網絡)。

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yum list | grep mysql 或 sudo yum -y list mysql*

• yum安裝mysql數據庫

wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
sudo rpm -ivh mysql-community-release-el7-5.noarch.rpm
sudo yum update
sudo yum install mysql-server
sudo systemctl start mysqld

mysql-server、mysql、mysql-devel都安裝好，當結果顯示為“Complete！”即安裝完畢。
注：安裝mysql只是安裝了數據庫，只有安裝mysql-server才相當于安裝了客戶端。

• 設置開機啟動

 systemctl enable mysqld

• 啟動mysql

systemctl start mysqld

• 修改mysql密碼

  mysql -uroot
  mysql>use mysql;
  mysql>update user set password=password('root') where user='root' and host='localhost'; 
  mysql>flush privileges;驗證是否修改成功
  mysql -uroot -proot
  
  修改mysql 訪問權限
  mysql> grant all privileges on *.* to 'root'@'mini1' identified by 'root';
  mysql> flush privileges;

  創建cdh默認的數據庫

  GRANT ALL ON *.* TO 'root'@'%' identified by 'jesse@123';create database scm DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
  create database amon DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
  create database rman DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
  create database hue DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
  create database metastore DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
  create database sentry DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
  create database nav DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
  create database navms DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
  create database oozie DEFAULT CHARSET utf8 COLLATE utf8_general_ci;GRANT ALL ON *.* TO 'scm'@'%' identified by 'jesse@123';
  GRANT ALL ON *.* TO 'amon'@'%' identified by 'jesse@123';
  GRANT ALL ON *.* TO 'rman'@'%' identified by 'jesse@123';
  GRANT ALL ON *.* TO 'hue'@'%' identified by 'jesse@123';
  GRANT ALL ON *.* TO 'hive'@'%' identified by 'jesse@123';
  GRANT ALL ON *.* TO 'sentry'@'%' identified by 'jesse@123';
  GRANT ALL ON *.* TO 'nav'@'%' identified by 'jesse@123';
  GRANT ALL ON *.* TO 'navms'@'%' identified by 'jesse@123';
  GRANT ALL ON *.* TO 'oozie'@'%' identified by 'jesse@123';flush privileges;

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