MySQL安装
1.1 安装包准备
1)卸载自带的Mysql-libs(如果之前安装过mysql,要全都卸载掉)
[root@hadoop102 software]$ rpm -qa | grep -i -E mysql\|mariadb | xargs -n1 sudo rpm -e —nodeps |
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2)将安装包和JDBC驱动上传到/opt/software,共计6个
01_mysql-community-common-5.7.16-1.el7.x86_64.rpm 02_mysql-community-libs-5.7.16-1.el7.x86_64.rpm 03_mysql-community-libs-compat-5.7.16-1.el7.x86_64.rpm 04_mysql-community-client-5.7.16-1.el7.x86_64.rpm 05_mysql-community-server-5.7.16-1.el7.x86_64.rpm mysql-connector-java-5.1.27-bin.jar |
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1.2 安装MySQL
1)安装mysql依赖
[root@hadoop102 software]$ sudo rpm -ivh 01_mysql-community-common-5.7.16-1.el7.x86_64.rpm [root@hadoop102 software]$ sudo rpm -ivh 02_mysql-community-libs-5.7.16-1.el7.x86_64.rpm [root@hadoop102 software]$ sudo rpm -ivh 03_mysql-community-libs-compat-5.7.16-1.el7.x86_64.rpm |
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2)安装mysql-client
[root@hadoop102 software]$ sudo rpm -ivh 04_mysql-community-client-5.7.16-1.el7.x86_64.rpm |
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3)安装mysql-server
yum install -y perl-Module-Install.noarch yum install libaio [root@hadoop102 software]$ sudo rpm -ivh 05_mysql-community-server-5.7.16-1.el7.x86_64.rpm |
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4)启动mysql
[root@hadoop102 software]$ sudo systemctl start mysqld |
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5)查看mysql密码
[root@hadoop102 software]$ sudo cat /var/log/mysqld.log | grep password |
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2.1.3 配置MySQL
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)用刚刚查到的密码进入mysql(如果报错,给密码加单引号)
[root@hadoop102 software]$ mysql -uroot -p’password’ |
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2)设置复杂密码(由于mysql密码策略,此密码必须足够复杂)
mysql> set password=password(“Qs23=zs32”); |
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3)更改mysql密码策略
mysql> set global validate_password_length=4; mysql> set global validate_password_policy=0; |
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4)设置简单好记的密码
mysql> set password=password(“123456”); |
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5)进入msyql库
mysql> use mysql |
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6)查询user表
mysql> select user, host from user; |
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7)修改user表,把Host表内容修改为%
mysql> update user set host=”%” where user=”root”; |
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8)刷新
mysql> flush privileges; |
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9)退出
mysql> quit; |
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