创建mysql Failed to start mysql.service: Unit not found.

解压

tar  

创建用户组和用户

groupadd mysql

useradd -r -g mysql mysql

创建目录和权限

mkdir -p /data/mysql

chown mysql:mysql -R /data/mysql

配置文件

vim /etc/my.cnf

[mysqld]
bind-address=0.0.0.0
port=3306
user=mysql
basedir=/usr/local/mysql
datadir=/data/mysql
socket=/tmp/mysql.sock
skip-grant-tables
log-error=/data/mysql/mysql.err
pid-file=/data/mysql/mysql.pid
#character config
character_set_server=utf8mb4
symbolic-links=0
explicit_defaults_for_timestamp=true

初始化

./mysqld --defaults-file=/etc/my.cnf --basedir=/usr/local/mysql/ --datadir=/data/mysql/ --user=mysql --initialize

查看初始密码

启动

service mysql start

如果出现

Redirecting to /bin/systemctl start mysql.service

Failed to start mysql.service: Unit not found.

缺少服务文件  （关键） 

cp /mysql目录/support-files/mysql.server  /etc/init.d/mysql

启动 成功

进入命令行

./mysql -u root -p

//设置密码

SET PASSWORD = PASSWORD('123456');

 ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;

FLUSH PRIVILEGES;

//设置root远程链接

use mysql

update user set host = '%' where user = 'root';

FLUSH PRIVILEGES;