创建文件
mkdir /usr/local/mysql
mkdir /usr/local/mysql/data
cd /usr/local/mysql
下载
wget https://dev.mysql.com/get/Downloads/MySQL-8.0/mysql-8.0.20-linux-glibc2.12-x86_64.tar.xz
解压
xz -d mysql-8.0.20-linux-glibc2.12-x86_64.tar.xz
tar xvf mysql-8.0.20-linux-glibc2.12-x86_64.tar
移动
mv /usr/local/mysql/mysql-8.0.20-linux-glibc2.12-x86_64/* /usr/local/mysql
创建用户组及用户和密码
groupadd mysql
useradd -g mysql mysql
授权用户
chown -R mysql.mysql /usr/local/mysql
编辑my.cnf文件
vim /etc/my.cnf
替换内容如下
[mysqld]
user=root
datadir=/usr/local/mysql/data
basedir=/usr/local/mysql
port=3306
max_connections=200
max_connect_errors=10
character-set-server=utf8
default-storage-engine=INNODB
default_authentication_plugin=mysql_native_password
lower_case_table_names=1
group_concat_max_len=102400
[mysql]
default-character-set=utf8
[client]
port=3306
default-character-set=utf8
、、结束
初始化基础信息,最后一行后面会有个随机的初始密码保存下来一会登录要用(如果忘记了就删掉data重新初始化)
./usr/local/mysql/bin/mysqld --initialize
如果提示 :./mysqld: error while loading shared libraries: libnuma.so.1: cannot open shared object file: No such file or directory
就执行下下面这个再执行初始化
yum install -y libaio
yum -y install numactl
mysql目录下(授权以及添加服务)
cp -a ./support-files/mysql.server /etc/init.d/mysql
chmod +x /etc/init.d/mysql
chkconfig --add mysql
启动mysql
service mysql start
将mysql添加到命令服务
ln -s /usr/local/mysql/bin/mysql /usr/bin
登录mysql
mysql -uroot -p
如果出现 mysql: error while loading shared libraries: libtinfo.so.5: cannot open shared object file: No such file or directory
cd /usr/local/mysql/bin
ldd mysql
sudo ln -s /usr/lib64/libtinfo.so.6.1 /usr/lib64/libtinfo.so.5
修改密码
ALTER USER ‘root’@‘localhost’ IDENTIFIED WITH
mysql_native_password BY ‘root123’;
刷新
flush privileges;
更改root连接权限
mysql> use mysql;
mysql> update user set host=‘%’ where user = ‘root’;
mysql> flush privileges;