感谢文章-Linux下安装mysql-5.7.24
centos8 + mysql-8.0.22

安装前

MySQL 官网下载
或命令

cd /usr/local/mysql
wget https://cdn.mysql.com/archives/mysql-5.6/mysql-5.6.45-linux-glibc2.12-x86_64.tar.gz

查看是否已安装rpm -qa | grep mysql
下载目录 /usr/local/mysql

解压tar xvJf mysql-8.0.22-linux-glibc2.12-x86_64.tar
删除 rm -rf mysql-8.0.22-linux-glibc2.12-x86_64.tar

检查用户组cat /etc/group | grep mysql用户cat /etc/passwd |grep mysql
添加用户组 groupadd mysql
添加用户useradd -r -g mysql mysql
查看groups mysql
创建data mkdir /usr/local/mysql/mysql/data
目录拥有者 cd /usr/local/mysql

chown -R mysql:mysql /usr/local/mysql
chmod -R 755 /usr/local/mysql

开始安装

初始化

cd /usr/local/mysql/mysql/bin
./mysqld --initialize --user=mysql --datadir=/usr/local/mysql/mysql/data --basedir=/usr/local/mysql/mysql

记住最后的密码&F,see#3jOqt

配置文件vi /etc/my.cnf

  [client]
  default-character-set=utf8
  #password   = your_password  
  port        = 3306  
  socket      = /tmp/mysql.sock   
  # Here follows entries for some specific programs  
  # The MySQL server  
  [mysqld]
  basedir=/usr/local/mysql/mysql
  datadir=/usr/local/mysql/mysql/data
  character-set-server=utf8
  init_connect='SET NAMES utf8
  port        = 3306  
  socket      = /tmp/mysql.sock  
  skip-external-locking  
  key_buffer_size = 16M  
  max_allowed_packet = 1M  
  table_open_cache = 64  
  sort_buffer_size = 512K  
  net_buffer_length = 8K  
  read_buffer_size = 256K  
  read_rnd_buffer_size = 512K  
  myisam_sort_buffer_size = 8M  
  character-set-server=utf8  
  init_connect='SET NAMES utf8' 

  log-bin=mysql-bin  
    # binary logging format - mixed recommended  
    binlog_format=mixed  

      server-id   = 1  

        [mysqldump]  
        quick  
        max_allowed_packet = 16M  
 
          [mysql]  
          no-auto-rehash  
          # Remove the next comment character if you are not familiar with SQL  
          #safe-updates  
          default-character-set=utf8   
 
        [myisamchk]  
        key_buffer_size = 20M  
        sort_buffer_size = 20M  
        read_buffer = 2M  
        write_buffer = 2M  
 
          [mysqlhotcopy]  
          interactive-timeout

lower_case_table_names：是否区分大小写，1表示存储时表名为小写，操作时不区分大小写；0表示区分大小写；不能动态设置，修改后，必须重启才能生效：
character_set_server：设置数据库默认字符集，如果不设置默认为latin1
innodb_file_per_table：是否将每个表的数据单独存储，1表示单独存储；0表示关闭独立表空间，可以通过查看数据目录，查看文件结构的区别；

远程访问

测试/usr/local/mysql/mysql/support-files/mysql.server start
查询服务 用

ps -ef|grep mysql | grep -v grep
ps -ef|grep mysqld | grep -v grep
#结束进程
kill -9 PID

报错 或 报错 或 报错
添加软连接

ln -s /usr/local/mysql/mysql/support-files/mysql.server /etc/init.d/mysql
ln -s /usr/local/mysql/mysql/bin/mysql /usr/bin/mysql
sudo ln -s /usr/lib64/libtinfo.so.6.1 /usr/lib64/libtinfo.so.5
#重启
service mysql restart

登录mysql -u root -p
输入刚刚临时密码 &F,see#3jOqt

修改密码

ALTER USER 'root'@'localhost' IDENTIFIED BY '你的密码';

远程连接, 在mysql的命令行

mysql>use mysql;
msyql>update user set user.Host='%' where user.User='root';
mysql>flush privileges;

退出exit;
开放端口

firewall-cmd --zone=public --add-port=3306/tcp --permanent
systemctl restart firewalld

开机启动
文件拷贝cp /usr/local/mysql/mysql/support-files/mysql.server /etc/init.d/mysqld
执行权限chmod +x /etc/init.d/mysqld
服务chkconfig --add mysqld
服务列表chkconfig --list