- 创建目录
mkdir -p /data/mysql3307/{data,tmp,logs}
赋权
chown -R mysql:mysql /data/mysql3307
chmod -R 750 /data/mysql3307
2.修改 /etc/my.cnf ，添加[mysqld3307]实例配置组
mysqld3307
mysql服务的端口
port = 3307
套接字文件存放路径
socket = /data/mysql3307/mysql.sock
mysql数据的存放路径
datadir = /data/mysql3307/data
mysql临时文件的存放路径
tmpdir = /data/mysql3307/tmp/
mysql服务使用的用户
user = mysql
字符集
character_set_server = utf8mb4
字符序
collation_server = utf8mb4_general_ci
错误日志
log-error = /data/mysql3307/logs/error.log
服务id
server-id = 3307
- 初始化数据
--defaults-group-suffix=3307指定使用 [mysqld3307] 配置组， --initialize初始化并生成随机密码
mysqld --defaults-group-suffix=3307 --initialize --user=mysql --datadir=/data/mysql3307/data
获取密码
grep 'temporary password' /data/mysql3307/logs/error.log
4.创建 /etc/systemd/system/mysqld3307.service , 然后执行 systemctl daemon-reload 重新加载system服务配置
Unit
Description=MySQL Server 3307
After=network.target
Service
User=mysql
Group=mysql
ExecStart=/usr/sbin/mysqld --defaults-group-suffix=3307
ExecStop=/usr/bin/mysqladmin -S /data/mysql3307/mysql.sock shutdown
Restart=on-failure
Install
WantedBy=multi-user.target
- 启动3307实例
systemctl start mysqld3307
查看状态
systemctl start mysqld3307
查看端口是否在监听中
lsof -i:3307
- 登录mysql3307
mysql -u root -pPASSWD -h127.0.0.1 -P3307
首次登录需要修改密码
ALTER USER 'root'@'localhost' IDENTIFIED BY '新密码';
FLUSH PRIVILEGES;