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 initserver.sh 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 1. 安装依赖包 \[root@localhost \~\]# yum list installed \|grep libaio libaio.x86_64 0.3.109- 13.el7 @anaconda 2. 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 3. 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) 4. 清空mariadb环境 \[root@localhost \~\]# rm -rf /etc/my.cnf 5. 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 6. 切换mysql目录，创建mysql-filles 7. 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 8. 初始化数据库，找到初始密码 \[root@localhost mysql\]# ./bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql 9. 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 10. 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/ 11. 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/ 12. 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