docker mysql8 忘记root密码解决方法

使用docker 搭建mysql ，docker-compose.yml

version: "2.1"
services:
  mysql:
    image: mysql:8.0.35
    container_name: mysql8
    healthcheck:
      test: ["CMD", "mysqladmin", "ping", "-h", "localhost", "-uroot", "-p2pq8zWaT@zuM"]
      interval: 6s
      timeout: 5s
      retries: 10
    environment:
      MYSQL_ROOT_PASSWORD: 2pq8zWaT@zuM
    ports:
      - 3306:3306
    volumes:
      - /opt/data/docker-data/mysql8/conf/my.cnf:/etc/mysql/conf.d/my.cnf
      - /opt/data/docker-data/mysql8/data:/var/lib/mysql
      - /opt/data/docker-data/mysql8/logs:/var/log/mysql
    restart: always

启动后，不知什么回事，root密码不对了，解决方法如下：

1、mysql 配置文件my.cnf， mysqld分组下增加一行，即编辑文件 /opt/data/docker-data/mysql8/conf/my.cnf

skip-grant-tables
2、重启mysql，docker restart mysql8
4、进入mysql :mysql -uroot -p 不用输密码，直接回车，进入mysql
5、授权

FLUSH PRIVILEGES;
-- 删除原来用户
DROP USER 'root'@'localhost';
DROP USER 'root'@'%';
-- 新增用户并设置密码
CREATE USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'DW2Qn5vRBqpE';
CREATE USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'DW2Qn5vRBqpE';
-- 授权所有数据库
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;

FLUSH PRIVILEGES;