docker启动mysql服务

创建基础文件

mkdir mysql
mkdir -p mysql/data

获取默认的my.cnf

docker run -name mysql -d -p 3306:3306 mysql:latest
docker cp mysql:/etc/my.cnf ./

vim mysql/my.cnf

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/8.1/en/server-configuration-defaults.html

[mysqld]
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M

# Remove leading # to revert to previous value for default_authentication_plugin,
# this will increase compatibility with older clients. For background, see:
# https://dev.mysql.com/doc/refman/8.1/en/server-system-variables.html#sysvar_default_authentication_plugin
# default-authentication-plugin=mysql_native_password
# my.cnf的来源 docker cp mysql:/etc/mysql/my.cnf ./
skip-host-cache
skip-name-resolve
datadir=/var/lib/mysql
socket=/var/run/mysqld/mysqld.sock
secure-file-priv=/var/lib/mysql-files
user=mysql

pid-file=/var/run/mysqld/mysqld.pid
[client]
socket=/var/run/mysqld/mysqld.sock

!includedir /etc/mysql/conf.d/

docker-compose-base.yml

version: '3'
services:
  nacos_host:
    image: nacos/nacos-server:v2.2.0
    restart: always
    container_name: nacos_host
    environment:
      - MODE=standalone
      - PREFER_HOST_MODE=hostname
    volumes:
      - ./sores/nacos/log:/home/nacos/logs
    ports:
      - 8848:8848
      - 9848:9848 #2.0新增了两个端口，需要暴露出来
      - 9849:9849 #2.0新增了两个端口，需要暴露出来
    networks:
      - qar-net
    depends_on:
      - redis_host
  nginx_host:
    image: nginx:1.23.4
    restart: always
    container_name: nginx_host
    volumes:
      - ./sores/nginx/html:/usr/share/nginx/html
      - ./sores/nginx/conf/conf.d/default.conf:/etc/nginx/conf.d/default.conf
    #  - ./nginx/conf/nginx.conf:/etc/nginx/nginx.conf
      - ./sores/nginx/logs:/var/log/nginx
    ports:
      - 80:80
      # - 81:81
    networks:
      - qar-net
  redis_host:
    image: redis:7.0.4
    container_name: redis_host
    restart: always
    command: redis-server /usr/local/etc/redis.conf
    # command: redis-server --appendonly no
    volumes:
      - ./sores/redis/conf:/usr/local/etc
      - ./sores/redis/data:/data
    ports:
      - 6379:6379
    networks:
      - qar-net
  pgsql_host:
    image: postgres:10.12
    container_name: pgsql_host
    restart: always
    environment:
      - POSTGRES_PASSWORD=qar123456
    volumes:
      - ./sores/postgres/data:/var/lib/postgresql/data
    ports:
      - 5432:5432
    networks:
      - qar-net
  mysql_host:
    image: mysql:latest
    container_name: mysql_host
    restart: always
    environment:
      - MYSQL_ROOT_PASSWORD=123456
    volumes:
      - ./sores/mysql/data:/var/lib/mysql
      - ./sores/mysql/my.cnf:/etc/my.cnf
    ports:
      - 3306:3306
    networks:
      - qar-net

networks:
  qar-net:
    external: true

docker-compose -f docker-compose-base.yml up -d mysql_host
docker exec -it mysql_host bash
mysql -uroot -p
password: 123456
# Access denied for user 'root'@'localhost' (using password:YES)
mysql -uroot -p
直接回车输入密码
进入：
> use mysql;
> alter user root@'localhost' identified by '123456'
> exit

# 重新启动服务
docker-compose -f docker-compose-base.yml up -d mysql_host
docker exec -it mysql_host bash
mysql -uroot -p
password: 123456
正常
> CREATE DATABASE mydb DEFAULT CHARACTER SET utf8;