免安装mysql-5.7.17-winx64配置详解
转自Tracy的笔记：
1.解压缩
2.添加环境变量 %MYSQL_HOME% set path =
%MYSQL_HOME%\bin
3添加配置文件：
[mysql]
default-character-set=utf8
[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
# These are commonly set, remove the # and set as required.
basedir = D:\mysql-5.7.17-winx64
datadir = D:\mysql-5.7.17-winx64\data
port = 3306
explicit_defaults_for_timestamp = TRUE
default-storage-engine=INNODB
character-set-server=utf8
max_allowed_packet=50M
server_id = 1
general-log=0
general_log_file="mysql_general.log"
slow-query-log=1
slow_query_log_file="mysql_slow_query.log"
long_query_time=10
log-error="mysql_error_log.err"
max_connections=1024
query_cache_size=128M
key_buffer_size=128M
innodb_flush_log_at_trx_commit=1
innodb_thread_concurrency=128
innodb_autoextend_increment=128M
tmp_table_size=128M
# 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 = 2G
# 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
sql_mode="NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
4初始化数据库
以管理员自身份打开CMD执行以下命令（注意必须以管理员身份打开，否则报错）
mysqld --initialize --user=mysql --console
在控制台消息尾部会出现随机生成的初始密码，记下来（因为有特殊字符，很容易记错，最好把整个消息保存在记事本里）
5将MySQL添加到系统服务
以管理员自身份打开CMD执行以下命令（注意必须以管理员身份打开，否则报错）
mysqld --install MySQL
net start MySQL
6启动MySQL并修改密码
在CMD控制台里执行命令 mysql -u root -p
回车执行后，输入刚才记录的随机密码
执行成功后，控制台显示 mysql>，则表示进入mysql
输入命令set password for root@localhost = password('123'); （注意分号）
遇到的问题：
查看mysql_error_log.err日志文件是解决基本上所有错误的关键
innodb_buffer_pool_size = 2G
设置缓存池大小要根据所在系统的内存大小来配置，报错在写在mysql_error_log.err文件中
MYSQL系统服务启动不了的问题：解决方法通过注册表中Service文件夹中查看服务
imagePath变量的路径是否是mysqld.exe所在路径
授权远程计算机都可以连接到mysql服务器。
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '你的密码' WITH GRANT OPTION;