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  • mysql 安装

    这里使用的mysql是 mysql-5.7.16

    将下载下来的mysql 安装tar包下载解压这就不用多说了,

     ps:(mysql-5.7.16-linux-glibc2.5-x86_64 这名字太长了,我把他改为mysql-5.7.16)

    首先

    (1)配置环境变量

    ############mysql#############
    export PATH=$PATH:/usr/local/development/mysql/mysql-5.7.16/bin

    (2)新增mysql的用户和组

    [root@node1 development]# groupadd mysql
    [root@node1 development]# useradd -r -g mysql mysql
    //修改mysql的目录权限 [root@node1 development]# chown -R mysql mysql /usr/local/development/mysql/mysql-5.7.16/

    (3)修改mysql安装目录中的   support-files/mysql.server 文件,设置mysql的安装目录 和 mysql的数据存储目录

    # If you want to affect other MySQL variables, you should make your changes
    # in the /etc/my.cnf, ~/.my.cnf or other MySQL configuration files.
    
    # If you change base dir, you must also change datadir. These may get
    # overwritten by settings in the MySQL configuration files.
    //mysql的安装目录
    basedir=/usr/local/development/mysql/mysql-5.7.16
    //mysql的数据存储目录 datadir=/usr/local/development/mysql/mysqlData

    (4)初始化数据库

    [root@node1 bin]# ./mysql_install_db --user=mysql --basedir=/usr/local/development/mysql/mysql-5.7.16 --datadir=/usr/local/development/mysql/mysqlData
    2017-06-05 17:44:50 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize 2017-06-05 17:44:55 [WARNING] The bootstrap log isn't empty: 2017-06-05 17:44:55 [WARNING] 2017-06-05T09:44:51.057443Z 0 [Warning] --bootstrap is deprecated. Please consider using --initialize instead 2017-06-05T09:44:51.075095Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000) 2017-06-05T09:44:51.075137Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)

    我们的MySQL存储目录已经生成数据了

    (5)启动MySQL(发现报错)

    [root@node1 support-files]# ./mysql.server start
    Starting MySQL.touch: cannot touch ‘/var/log/mariadb/mariadb.log’: No such file or directory
    chmod: cannot access ‘/var/log/mariadb/mariadb.log’: No such file or directory
    touch: cannot touch ‘/var/log/mariadb/mariadb.log’: No such file or directory
    chown: cannot access ‘/var/log/mariadb/mariadb.log’: No such file or directory
    /usr/local/development/mysql/mysql-5.7.16/bin/mysqld_safe: line 135: /var/log/mariadb/mariadb.log: No such file or directory
    /usr/local/development/mysql/mysql-5.7.16/bin/mysqld_safe: line 169: /var/log/mariadb/mariadb.log: No such file or directory
    touch: cannot touch ‘/var/log/mariadb/mariadb.log’: No such file or directory
    chown: cannot access ‘/var/log/mariadb/mariadb.log’: No such file or directory
    chmod: cannot access ‘/var/log/mariadb/mariadb.log’: No such file or directory
    /usr/local/development/mysql/mysql-5.7.16/bin/mysqld_safe: line 135: /var/log/mariadb/mariadb.log: No such file or directory
     ERROR! The server quit without updating PID file (/usr/local/development/mysql/mysqlData/node1.pid).

    我们确实是没有/var/log/mariadb/mariadb.log 这个目录,这个是因为你没有指定他的配置文件的话,他会默认找到/etc/my.cnf 这个配置文件,因为我们修改了mysql的数据存储目录。

    将/etc/my.cnf 删掉,再次启动

    [root@node1 support-files]# rm -f /etc/my.cnf
    [root@node1 support-files]# ./mysql.server start
    Starting MySQL.. SUCCESS! 

    (6)查询MySQL自动生成的root密码

    [root@node1 support-files]# more /root/.mysql_secret 
    # Password set for user 'root@localhost' at 2017-06-05 17:44:50 
    N5*gFyur1LbC                          //这里就是

    (7)在bin目录下 登录MySQL(将自动生成的密码粘贴上去即可)

    [root@node1 bin]# ./mysql -uroot -p
    Enter password: 
    Welcome to the MySQL monitor.  Commands end with ; or g.
    Your MySQL connection id is 2
    Server version: 5.7.16
    
    Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
    
    Oracle is a registered trademark of Oracle Corporation and/or its
    affiliates. Other names may be trademarks of their respective
    owners.
    
    Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

    (8)修改MySQL的root密码(你肯定不想使用自动生成的那个密码吧)

    mysql> set password=password('mysql123');//设置密码
    Query OK, 0 rows affected, 1 warning (0.00 sec)
    
    mysql> alter user 'root'@'localhost' password expire never//将密码应用于root用户
        -> ;
    Query OK, 0 rows affected (0.00 sec)
    
    mysql> flush privileges//刷新权限的列表
        -> ;
    Query OK, 0 rows affected (0.00 sec)
    
    mysql> exit//退出
    Bye

    重新登录,试一试刚才修改的密码是否生效,当然你们是看不见输入密码的,我这里已经生效了

    上面是MySQL的搭建过程,我是使用MySQL来存储hive的元数据,而MySQL不允许使用root用户远程登录,所以我新建hive用户

    mysql> create user 'hive'@'%' identified by 'hive123';//创建用户名和密码
    Query OK, 0 rows affected (0.00 sec)
    
    mysql> grant all on *.* to 'hive'@'%';//赋予hive用户所有权限,'%'表示任何地址都可以通过hive用户连接mysql,如果你想限制可以加入你的ip
    Query OK, 0 rows affected (0.00 sec)
    
    mysql> flush privileges;//刷新权限列表
    Query OK, 0 rows affected (0.00 sec)
    
    mysql> create database hivedb;//创建数据库
    Query OK, 1 row affected (0.00 sec)

    查看创建的数据库

    mysql> show databases;
    +--------------------+
    | Database           |
    +--------------------+
    | information_schema |
    | hivedb             |
    | mysql              |
    | performance_schema |
    | sys                |
    +--------------------+
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  • 原文地址:https://www.cnblogs.com/zhangXingSheng/p/6941422.html
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