第五周 周一
早
mysql安装配置
1.官网下载或者wget
[root@mysql ~]# ls
anaconda-ks.cfg
mysql-8.0.33-1.el7.x86_64.rpm-bundle.tar
mysql-community-client-8.0.33-1.el7.x86_64.rpm
mysql-community-client-plugins-8.0.33-1.el7.x86_64.rpm
mysql-community-common-8.0.33-1.el7.x86_64.rpm
mysql-community-debuginfo-8.0.33-1.el7.x86_64.rpm
mysql-community-devel-8.0.33-1.el7.x86_64.rpm
mysql-community-embedded-compat-8.0.33-1.el7.x86_64.rpm
mysql-community-icu-data-files-8.0.33-1.el7.x86_64.rpm
mysql-community-libs-8.0.33-1.el7.x86_64.rpm
mysql-community-libs-compat-8.0.33-1.el7.x86_64.rpm
mysql-community-server-8.0.33-1.el7.x86_64.rpm
mysql-community-server-debug-8.0.33-1.el7.x86_64.rpm
mysql-community-test-8.0.33-1.el7.x86_64.rpm
2.确定mysql-community-server正常安装之后就可以开始配置
3.初始化mysqld 服务 mysqld initeialize
4.启动服务 systemctl start mysqld
5.添加开机启动列表 systecmctrl enable mysqld
6.在/var/log/mysql.log中找到初始密码，前后复制空格7.登录管理 mysql -uroot -p
将复制的密码粘贴到输入密码的区
域，实现登录
8.设置新的密码
9.退出登录
使用mysql8.0.33包an安装配置
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安装依赖包
[root@localhost ~]# yum list installed |grep libaio
libaio.x86_64 0.3.109- 13.el7 @anaconda
-
解压查看
[root@localhost ~]# ls
mysql-8.0.33-linux-glibc2.12-x86_64.tar
[root@localhost ~]# tar -xvf mysql-8.0.33-linux-glibc2.12-x86_64.tar
mysql-8.0.33-linux-glibc2.12-x86_64.tar.xz
mysql-router-8.0.33-linux-glibc2.12-x86_64.tar.xz
[root@localhost ~]# tar -xvf mysql-8.0.33-linux-glibc2.12-x86_64.tar.xz
mysql-8.0.33-linux-glibc2.12-x86_64
[root@localhost ~]# ls mysql-8.0.33-linux-glibc2.12-x86_64/
bin docs include lib LICENSE man README
share support-files
-
创建用户
[root@localhost ~]# useradd -r -s /sbin/nologin mysql
[root@localhost ~]# id mysql
uid=27(mysql) gid=27(mysql) 组=27(mysql)
-
清空mariadb环境
[root@localhost ~]# rm -rf /etc/my.cnf
-
将解压文件放置在根目录下
[root@localhost ~]# mv mysql-8.0.33-linux
glibc2.12-x86_64/ /mysql
[root@localhost ~]# ls /mysql/
bin docs include lib LICENSE man README
share support-files
-
切换mysql目录，创建mysql-filles
-
修改mysql-files文件权限750和所属mysql
[root@localhost mysql]# chown mysql:mysql mysql-files/
[root@localhost mysql]# chmod 750 mysql-files/
[root@localhost mysql]# ls -l
-
初始化数据库，找到初始密码
[root@localhost mysql]# ./bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql
-
查看是否初始化成功过，可以通过文件夹中是否有data文件夹验证
[root@localhost mysql]# ls
bin docs lib man README support-files
data include LICENSE mysql-files share
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设置ssl安全加密连接，敏感数据
[root@localhost mysql]# ls ./bin/ssl
./bin/mysql_ssl_rsa_setup
[root@localhost mysql]# ./bin/mysql_ssl_rsa_setup --datadir=/mysql/data
[root@localhost mysql]# ls ./data/
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拷贝support-files/mysql.server文件
[root@localhost mysql]# cp support-files/mysql.server /etc/init.d/mysql8
[root@localhost mysql]# ls /etc/init.d/
-
启动服务器，不能使用systemctl
service mysql8 start
下午
数据库远程及操作
1.远程登录前提条件是mysql.user表中的host属性为%，如果是
localhost就不允许远程登录，update mysql.user set host="%"
where user="root",flush privileges;
2.远程管理，可以使⽤图形化⼯具，sqlyog，navicat，掌握命令⼯
具，客户端⼯具 mysql
3.mysql -h192.168.71.129 -P3306 -uzhangmin -pZhang_min123
-h 主机 ip或者是域名 如果是localshost或者是127.0.0.1可省略
-P 端⼝ 默认是3306，如果是默认的，可以省略
-u ⽤户名
-p 密码，可以不换⾏直接输⼊，也可以换⾏ 不回显输⼊密码
创建账户
create user 'cc'@'%' identified by '12324cc';
给权限
grant all on . to 'cc'
创建库
create database if not exists test;
创建表
use test;
create table user(
id int primary key,
username varchar(45) not null,
password varchar(45) not null
);
添加数据
insert into test.user values(1,"zhangsan","123");
insert into test.user values(2,"lisi","456");
insert into test.user values(3,"wamngwi","789");
insert into test.user values(4,"zhaoliu","aaa");
添加lilaosi账号，修改密码，查看mysql.user中的lilaosi的信息
mysql> create user 'lilaosi'@'%' identified by 'Lilaosi_123';
Query OK, 0 rows affected (0.01 sec)
使⽤root账号，为lilaosi账号添加test库存中所有的表的所有权限
grant all on test.* to 'lilaosi';
密码安全策略
查看密码策略
mysql> show variables like 'validate%';
修改策略
mysql> set global validate_password.length=0;
mysql> set global validate_password.policy=LOW;
mysql> show variables like 'validate%'; //查看修改后策略，验证