【MYSQL】MYSQLの環境構築

ダウンロード：https://dev.mysql.com/downloads/mysql/

手順①

手順②

mysql.iniの設定について

[mysql]
default-character-set=utf8

[mysqld]
port=3306
basedir=D:\program\mysql-8.0.11-winx64
datadir=D:\program\mysql-8.0.11-winx64\data
max_connections=200
character-set-server=utf8
default-storage-engine=INNODB

 [mysqld]
 # 设置3306端口
 port=3306
 # 设置mysql的安装目录
 basedir=C:\Program Files\MySQL
 # 设置mysql数据库的数据的存放目录
 datadir=E:\database\MySQL\Data
 # 允许最大连接数
 max_connections=200
 # 允许连接失败的次数。这是为了防止有人从该主机试图攻击数据库系统
 max_connect_errors=10
 # 服务端使用的字符集默认为UTF8
 character-set-server=utf8
 # 创建新表时将使用的默认存储引擎
 default-storage-engine=INNODB
 # 默认使用“mysql_native_password”插件认证
 default_authentication_plugin=mysql_native_password
 [mysql]
 # 设置mysql客户端默认字符集
 default-character-set=utf8
 [client]
 # 设置mysql客户端连接服务端时默认使用的端口
 port=3306
 default-character-set=utf8

my.ini

参考ファイル：

 # Example MySQL config file for small systems.
 #
 # This is for a system with little memory (<= 64M) where MySQL is only used
 # from time to time and it's important that the mysqld daemon
 # doesn't use much resources.
 #
 # MySQL programs look for option files in a set of
 # locations which depend on the deployment platform.
 # You can copy this option file to one of those
 # locations. For information about these locations, see:
 # http://dev.mysql.com/doc/mysql/en/option-files.html
 #
 # In this file, you can use all long options that a program supports.
 # If you want to know which options a program supports, run the program
 # with the "--help" option.

 # The following options will be passed to all MySQL clients
 [client]
 #password    = your_password
 port        = 3306
 socket        = /tmp/mysql.sock

 # Here follows entries for some specific programs

 # The MySQL server
 [mysqld]
 port        = 3306
 socket        = /tmp/mysql.sock
 skip-external-locking
 key_buffer_size = 16K
 max_allowed_packet = 1M
 table_open_cache = 4
 sort_buffer_size = 64K
 read_buffer_size = 256K
 read_rnd_buffer_size = 256K
 net_buffer_length = 2K
 thread_stack = 128K

 # Don't listen on a TCP/IP port at all. This can be a security enhancement,
 # if all processes that need to connect to mysqld run on the same host.
 # All interaction with mysqld must be made via Unix sockets or named pipes.
 # Note that using this option without enabling named pipes on Windows
 # (using the "enable-named-pipe" option) will render mysqld useless!
 #
 #skip-networking
 server-id    = 1

 # Uncomment the following if you want to log updates
 #log-bin=mysql-bin

 # binary logging format - mixed recommended
 #binlog_format=mixed

 # Causes updates to non-transactional engines using statement format to be
 # written directly to binary log. Before using this option make sure that
 # there are no dependencies between transactional and non-transactional
 # tables such as in the statement INSERT INTO t_myisam SELECT * FROM
 # t_innodb; otherwise, slaves may diverge from the master.
 #binlog_direct_non_transactional_updates=TRUE

 # Uncomment the following if you are using InnoDB tables
 #innodb_data_home_dir = C:\\mysql\\data\\
 #innodb_data_file_path = ibdata1:10M:autoextend
 #innodb_log_group_home_dir = C:\\mysql\\data\\
 # You can set .._buffer_pool_size up to 50 - 80 %
 # of RAM but beware of setting memory usage too high
 #innodb_buffer_pool_size = 16M
 #innodb_additional_mem_pool_size = 2M
 # Set .._log_file_size to 25 % of buffer pool size
 #innodb_log_file_size = 5M
 #innodb_log_buffer_size = 8M
 #innodb_flush_log_at_trx_commit = 1
 #innodb_lock_wait_timeout = 50

 [mysqldump]
 quick
 max_allowed_packet = 16M

 [mysql]
 no-auto-rehash
 # Remove the next comment character if you are not familiar with SQL
 #safe-updates

 [myisamchk]
 key_buffer_size = 8M
 sort_buffer_size = 8M

 [mysqlhotcopy]
 interactive-timeout

my-small.ini

 # Example MySQL config file for medium systems.
 #
 # This is for a system with little memory (32M - 64M) where MySQL plays
 # an important part, or systems up to 128M where MySQL is used together with
 # other programs (such as a web server)
 #
 # MySQL programs look for option files in a set of
 # locations which depend on the deployment platform.
 # You can copy this option file to one of those
 # locations. For information about these locations, see:
 # http://dev.mysql.com/doc/mysql/en/option-files.html
 #
 # In this file, you can use all long options that a program supports.
 # If you want to know which options a program supports, run the program
 # with the "--help" option.

 # The following options will be passed to all MySQL clients
 [client]
 #password    = your_password
 port        = 3306
 socket        = /tmp/mysql.sock

 # Here follows entries for some specific programs

 # The MySQL server
 [mysqld]
 port        = 3306
 socket        = /tmp/mysql.sock
 skip-external-locking
 key_buffer_size = 16M
 max_allowed_packet = 1M
 table_open_cache = 64
 sort_buffer_size = 512K
 net_buffer_length = 8K
 read_buffer_size = 256K
 read_rnd_buffer_size = 512K
 myisam_sort_buffer_size = 8M

 # Don't listen on a TCP/IP port at all. This can be a security enhancement,
 # if all processes that need to connect to mysqld run on the same host.
 # All interaction with mysqld must be made via Unix sockets or named pipes.
 # Note that using this option without enabling named pipes on Windows
 # (via the "enable-named-pipe" option) will render mysqld useless!
 #
 #skip-networking

 # Replication Master Server (default)
 # binary logging is required for replication
 log-bin=mysql-bin

 # binary logging format - mixed recommended
 binlog_format=mixed

 # required unique id between 1 and 2^32 - 1
 # defaults to 1 if master-host is not set
 # but will not function as a master if omitted
 server-id    = 1

 # Replication Slave (comment out master section to use this)
 #
 # To configure this host as a replication slave, you can choose between
 # two methods :
 #
 # 1) Use the CHANGE MASTER TO command (fully described in our manual) -
 #    the syntax is:
 #
 #    CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
 #    MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
 #
 #    where you replace <host>, <user>, <password> by quoted strings and
 #    <port> by the master's port number (3306 by default).
 #
 #    Example:
 #
 #    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
 #    MASTER_USER='joe', MASTER_PASSWORD='secret';
 #
 # OR
 #
 # 2) Set the variables below. However, in case you choose this method, then
 #    start replication for the first time (even unsuccessfully, for example
 #    if you mistyped the password in master-password and the slave fails to
 #    connect), the slave will create a master.info file, and any later
 #    change in this file to the variables' values below will be ignored and
 #    overridden by the content of the master.info file, unless you shutdown
 #    the slave server, delete master.info and restart the slaver server.
 #    For that reason, you may want to leave the lines below untouched
 #    (commented) and instead use CHANGE MASTER TO (see above)
 #
 # required unique id between 2 and 2^32 - 1
 # (and different from the master)
 # defaults to 2 if master-host is set
 # but will not function as a slave if omitted
 #server-id       = 2
 #
 # The replication master for this slave - required
 #master-host     =   <hostname>
 #
 # The username the slave will use for authentication when connecting
 # to the master - required
 #master-user     =   <username>
 #
 # The password the slave will authenticate with when connecting to
 # the master - required
 #master-password =   <password>
 #
 # The port the master is listening on.
 # optional - defaults to 3306
 #master-port     =  <port>
 #
 # binary logging - not required for slaves, but recommended
 #log-bin=mysql-bin

 # Uncomment the following if you are using InnoDB tables
 #innodb_data_home_dir = C:\\mysql\\data\\
 #innodb_data_file_path = ibdata1:10M:autoextend
 #innodb_log_group_home_dir = C:\\mysql\\data\\
 # You can set .._buffer_pool_size up to 50 - 80 %
 # of RAM but beware of setting memory usage too high
 #innodb_buffer_pool_size = 16M
 #innodb_additional_mem_pool_size = 2M
 # Set .._log_file_size to 25 % of buffer pool size
 #innodb_log_file_size = 5M
 #innodb_log_buffer_size = 8M
 #innodb_flush_log_at_trx_commit = 1
 #innodb_lock_wait_timeout = 50

 [mysqldump]
 quick
 max_allowed_packet = 16M

 [mysql]
 no-auto-rehash
 # Remove the next comment character if you are not familiar with SQL
 #safe-updates

 [myisamchk]
 key_buffer_size = 20M
 sort_buffer_size = 20M
 read_buffer = 2M
 write_buffer = 2M

 [mysqlhotcopy]
 interactive-timeout

my-medium.ini

 # Example MySQL config file for large systems.
 #
 # This is for a large system with memory = 512M where the system runs mainly
 # MySQL.
 #
 # MySQL programs look for option files in a set of
 # locations which depend on the deployment platform.
 # You can copy this option file to one of those
 # locations. For information about these locations, see:
 # http://dev.mysql.com/doc/mysql/en/option-files.html
 #
 # In this file, you can use all long options that a program supports.
 # If you want to know which options a program supports, run the program
 # with the "--help" option.

 # The following options will be passed to all MySQL clients
 [client]
 #password    = your_password
 port        = 3306
 socket        = /tmp/mysql.sock

 # Here follows entries for some specific programs

 # The MySQL server
 [mysqld]
 port        = 3306
 socket        = /tmp/mysql.sock
 skip-external-locking
 key_buffer_size = 256M
 max_allowed_packet = 1M
 table_open_cache = 256
 sort_buffer_size = 1M
 read_buffer_size = 1M
 read_rnd_buffer_size = 4M
 myisam_sort_buffer_size = 64M
 thread_cache_size = 8
 query_cache_size= 16M
 # Try number of CPU's*2 for thread_concurrency
 thread_concurrency = 8

 # Don't listen on a TCP/IP port at all. This can be a security enhancement,
 # if all processes that need to connect to mysqld run on the same host.
 # All interaction with mysqld must be made via Unix sockets or named pipes.
 # Note that using this option without enabling named pipes on Windows
 # (via the "enable-named-pipe" option) will render mysqld useless!
 #
 #skip-networking

 # Replication Master Server (default)
 # binary logging is required for replication
 log-bin=mysql-bin

 # binary logging format - mixed recommended
 binlog_format=mixed

 # required unique id between 1 and 2^32 - 1
 # defaults to 1 if master-host is not set
 # but will not function as a master if omitted
 server-id    = 1

 # Replication Slave (comment out master section to use this)
 #
 # To configure this host as a replication slave, you can choose between
 # two methods :
 #
 # 1) Use the CHANGE MASTER TO command (fully described in our manual) -
 #    the syntax is:
 #
 #    CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
 #    MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
 #
 #    where you replace <host>, <user>, <password> by quoted strings and
 #    <port> by the master's port number (3306 by default).
 #
 #    Example:
 #
 #    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
 #    MASTER_USER='joe', MASTER_PASSWORD='secret';
 #
 # OR
 #
 # 2) Set the variables below. However, in case you choose this method, then
 #    start replication for the first time (even unsuccessfully, for example
 #    if you mistyped the password in master-password and the slave fails to
 #    connect), the slave will create a master.info file, and any later
 #    change in this file to the variables' values below will be ignored and
 #    overridden by the content of the master.info file, unless you shutdown
 #    the slave server, delete master.info and restart the slaver server.
 #    For that reason, you may want to leave the lines below untouched
 #    (commented) and instead use CHANGE MASTER TO (see above)
 #
 # required unique id between 2 and 2^32 - 1
 # (and different from the master)
 # defaults to 2 if master-host is set
 # but will not function as a slave if omitted
 #server-id       = 2
 #
 # The replication master for this slave - required
 #master-host     =   <hostname>
 #
 # The username the slave will use for authentication when connecting
 # to the master - required
 #master-user     =   <username>
 #
 # The password the slave will authenticate with when connecting to
 # the master - required
 #master-password =   <password>
 #
 # The port the master is listening on.
 # optional - defaults to 3306
 #master-port     =  <port>
 #
 # binary logging - not required for slaves, but recommended
 #log-bin=mysql-bin

 # Uncomment the following if you are using InnoDB tables
 #innodb_data_home_dir = C:\\mysql\\data\\
 #innodb_data_file_path = ibdata1:10M:autoextend
 #innodb_log_group_home_dir = C:\\mysql\\data\\
 # You can set .._buffer_pool_size up to 50 - 80 %
 # of RAM but beware of setting memory usage too high
 #innodb_buffer_pool_size = 256M
 #innodb_additional_mem_pool_size = 20M
 # Set .._log_file_size to 25 % of buffer pool size
 #innodb_log_file_size = 64M
 #innodb_log_buffer_size = 8M
 #innodb_flush_log_at_trx_commit = 1
 #innodb_lock_wait_timeout = 50

 [mysqldump]
 quick
 max_allowed_packet = 16M

 [mysql]
 no-auto-rehash
 # Remove the next comment character if you are not familiar with SQL
 #safe-updates

 [myisamchk]
 key_buffer_size = 128M
 sort_buffer_size = 128M
 read_buffer = 2M
 write_buffer = 2M

 [mysqlhotcopy]
 interactive-timeout

my-large.ini

 #BEGIN CONFIG INFO
 #DESCR: 4GB RAM, InnoDB only, ACID, few connections, heavy queries
 #TYPE: SYSTEM
 #END CONFIG INFO

 #
 # This is a MySQL example config file for systems with 4GB of memory
 # running mostly MySQL using InnoDB only tables and performing complex
 # queries with few connections.
 #
 # MySQL programs look for option files in a set of
 # locations which depend on the deployment platform.
 # You can copy this option file to one of those
 # locations. For information about these locations, see:
 # http://dev.mysql.com/doc/mysql/en/option-files.html
 #
 # In this file, you can use all long options that a program supports.
 # If you want to know which options a program supports, run the program
 # with the "--help" option.
 #
 # More detailed information about the individual options can also be
 # found in the manual.
 #

 #
 # The following options will be read by MySQL client applications.
 # Note that only client applications shipped by MySQL are guaranteed
 # to read this section. If you want your own MySQL client program to
 # honor these values, you need to specify it as an option during the
 # MySQL client library initialization.
 #
 [client]
 #password    = [your_password]
 port        = 3306
 socket        = /tmp/mysql.sock

 # *** Application-specific options follow here ***

 #
 # The MySQL server
 #
 [mysqld]

 # generic configuration options
 port        = 3306
 socket        = /tmp/mysql.sock

 # back_log is the number of connections the operating system can keep in
 # the listen queue, before the MySQL connection manager thread has
 # processed them. If you have a very high connection rate and experience
 # "connection refused" errors, you might need to increase this value.
 # Check your OS documentation for the maximum value of this parameter.
 # Attempting to set back_log higher than your operating system limit
 # will have no effect.
 back_log = 50

 # Don't listen on a TCP/IP port at all. This can be a security
 # enhancement, if all processes that need to connect to mysqld run
 # on the same host.  All interaction with mysqld must be made via Unix
 # sockets or named pipes.
 # Note that using this option without enabling named pipes on Windows
 # (via the "enable-named-pipe" option) will render mysqld useless!
 #skip-networking

 # The maximum amount of concurrent sessions the MySQL server will
 # allow. One of these connections will be reserved for a user with
 # SUPER privileges to allow the administrator to login even if the
 # connection limit has been reached.
 max_connections = 100

 # Maximum amount of errors allowed per host. If this limit is reached,
 # the host will be blocked from connecting to the MySQL server until
 # "FLUSH HOSTS" has been run or the server was restarted. Invalid
 # passwords and other errors during the connect phase result in
 # increasing this value. See the "Aborted_connects" status variable for
 # global counter.
 max_connect_errors = 10

 # The number of open tables for all threads. Increasing this value
 # increases the number of file descriptors that mysqld requires.
 # Therefore you have to make sure to set the amount of open files
 # allowed to at least 4096 in the variable "open-files-limit" in
 # section [mysqld_safe]
 table_open_cache = 2048

 # Enable external file level locking. Enabled file locking will have a
 # negative impact on performance, so only use it in case you have
 # multiple database instances running on the same files (note some
 # restrictions still apply!) or if you use other software relying on
 # locking MyISAM tables on file level.
 #external-locking

 # The maximum size of a query packet the server can handle as well as
 # maximum query size server can process (Important when working with
 # large BLOBs).  enlarged dynamically, for each connection.
 max_allowed_packet = 16M

 # The size of the cache to hold the SQL statements for the binary log
 # during a transaction. If you often use big, multi-statement
 # transactions you can increase this value to get more performance. All
 # statements from transactions are buffered in the binary log cache and
 # are being written to the binary log at once after the COMMIT.  If the
 # transaction is larger than this value, temporary file on disk is used
 # instead.  This buffer is allocated per connection on first update
 # statement in transaction
 binlog_cache_size = 1M

 # Maximum allowed size for a single HEAP (in memory) table. This option
 # is a protection against the accidential creation of a very large HEAP
 # table which could otherwise use up all memory resources.
 max_heap_table_size = 64M

 # Size of the buffer used for doing full table scans.
 # Allocated per thread, if a full scan is needed.
 read_buffer_size = 2M

 # When reading rows in sorted order after a sort, the rows are read
 # through this buffer to avoid disk seeks. You can improve ORDER BY
 # performance a lot, if set this to a high value.
 # Allocated per thread, when needed.
 read_rnd_buffer_size = 16M

 # Sort buffer is used to perform sorts for some ORDER BY and GROUP BY
 # queries. If sorted data does not fit into the sort buffer, a disk
 # based merge sort is used instead - See the "Sort_merge_passes"
 # status variable. Allocated per thread if sort is needed.
 sort_buffer_size = 8M

 # This buffer is used for the optimization of full JOINs (JOINs without
 # indexes). Such JOINs are very bad for performance in most cases
 # anyway, but setting this variable to a large value reduces the
 # performance impact. See the "Select_full_join" status variable for a
 # count of full JOINs. Allocated per thread if full join is found
 join_buffer_size = 8M

 # How many threads we should keep in a cache for reuse. When a client
 # disconnects, the client's threads are put in the cache if there aren't
 # more than thread_cache_size threads from before.  This greatly reduces
 # the amount of thread creations needed if you have a lot of new
 # connections. (Normally this doesn't give a notable performance
 # improvement if you have a good thread implementation.)
 thread_cache_size = 8

 # This permits the application to give the threads system a hint for the
 # desired number of threads that should be run at the same time.  This
 # value only makes sense on systems that support the thread_concurrency()
 # function call (Sun Solaris, for example).
 # You should try [number of CPUs]*(2..4) for thread_concurrency
 thread_concurrency = 8

 # Query cache is used to cache SELECT results and later return them
 # without actual executing the same query once again. Having the query
 # cache enabled may result in significant speed improvements, if your
 # have a lot of identical queries and rarely changing tables. See the
 # "Qcache_lowmem_prunes" status variable to check if the current value
 # is high enough for your load.
 # Note: In case your tables change very often or if your queries are
 # textually different every time, the query cache may result in a
 # slowdown instead of a performance improvement.
 query_cache_size = 64M

 # Only cache result sets that are smaller than this limit. This is to
 # protect the query cache of a very large result set overwriting all
 # other query results.
 query_cache_limit = 2M

 # Minimum word length to be indexed by the full text search index.
 # You might wish to decrease it if you need to search for shorter words.
 # Note that you need to rebuild your FULLTEXT index, after you have
 # modified this value.
 ft_min_word_len = 4

 # If your system supports the memlock() function call, you might want to
 # enable this option while running MySQL to keep it locked in memory and
 # to avoid potential swapping out in case of high memory pressure. Good
 # for performance.
 #memlock

 # Table type which is used by default when creating new tables, if not
 # specified differently during the CREATE TABLE statement.
 default-storage-engine = MYISAM

 # Thread stack size to use. This amount of memory is always reserved at
 # connection time. MySQL itself usually needs no more than 64K of
 # memory, while if you use your own stack hungry UDF functions or your
 # OS requires more stack for some operations, you might need to set this
 # to a higher value.
 thread_stack = 192K

 # Set the default transaction isolation level. Levels available are:
 # READ-UNCOMMITTED, READ-COMMITTED, REPEATABLE-READ, SERIALIZABLE
 transaction_isolation = REPEATABLE-READ

 # Maximum size for internal (in-memory) temporary tables. If a table
 # grows larger than this value, it is automatically converted to disk
 # based table This limitation is for a single table. There can be many
 # of them.
 tmp_table_size = 64M

 # Enable binary logging. This is required for acting as a MASTER in a
 # replication configuration. You also need the binary log if you need
 # the ability to do point in time recovery from your latest backup.
 log-bin=mysql-bin

 # binary logging format - mixed recommended
 binlog_format=mixed

 # If you're using replication with chained slaves (A->B->C), you need to
 # enable this option on server B. It enables logging of updates done by
 # the slave thread into the slave's binary log.
 #log_slave_updates

 # Enable the full query log. Every query (even ones with incorrect
 # syntax) that the server receives will be logged. This is useful for
 # debugging, it is usually disabled in production use.
 #log

 # Print warnings to the error log file.  If you have any problem with
 # MySQL you should enable logging of warnings and examine the error log
 # for possible explanations.
 #log_warnings

 # Log slow queries. Slow queries are queries which take more than the
 # amount of time defined in "long_query_time" or which do not use
 # indexes well, if log_short_format is not enabled. It is normally good idea
 # to have this turned on if you frequently add new queries to the
 # system.
 slow_query_log

 # All queries taking more than this amount of time (in seconds) will be
 # trated as slow. Do not use "1" as a value here, as this will result in
 # even very fast queries being logged from time to time (as MySQL
 # currently measures time with second accuracy only).
 long_query_time = 2

 # ***  Replication related settings 

 # Unique server identification number between 1 and 2^32-1. This value
 # is required for both master and slave hosts. It defaults to 1 if
 # "master-host" is not set, but will MySQL will not function as a master
 # if it is omitted.
 server-id = 1

 # Replication Slave (comment out master section to use this)
 #
 # To configure this host as a replication slave, you can choose between
 # two methods :
 #
 # 1) Use the CHANGE MASTER TO command (fully described in our manual) -
 #    the syntax is:
 #
 #    CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
 #    MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
 #
 #    where you replace <host>, <user>, <password> by quoted strings and
 #    <port> by the master's port number (3306 by default).
 #
 #    Example:
 #
 #    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
 #    MASTER_USER='joe', MASTER_PASSWORD='secret';
 #
 # OR
 #
 # 2) Set the variables below. However, in case you choose this method, then
 #    start replication for the first time (even unsuccessfully, for example
 #    if you mistyped the password in master-password and the slave fails to
 #    connect), the slave will create a master.info file, and any later
 #    changes in this file to the variable values below will be ignored and
 #    overridden by the content of the master.info file, unless you shutdown
 #    the slave server, delete master.info and restart the slaver server.
 #    For that reason, you may want to leave the lines below untouched
 #    (commented) and instead use CHANGE MASTER TO (see above)
 #
 # required unique id between 2 and 2^32 - 1
 # (and different from the master)
 # defaults to 2 if master-host is set
 # but will not function as a slave if omitted
 #server-id = 2
 #
 # The replication master for this slave - required
 #master-host = <hostname>
 #
 # The username the slave will use for authentication when connecting
 # to the master - required
 #master-user = <username>
 #
 # The password the slave will authenticate with when connecting to
 # the master - required
 #master-password = <password>
 #
 # The port the master is listening on.
 # optional - defaults to 3306
 #master-port = <port>

 # Make the slave read-only. Only users with the SUPER privilege and the
 # replication slave thread will be able to modify data on it. You can
 # use this to ensure that no applications will accidently modify data on
 # the slave instead of the master
 #read_only

 #*** MyISAM Specific options

 # Size of the Key Buffer, used to cache index blocks for MyISAM tables.
 # Do not set it larger than 30% of your available memory, as some memory
 # is also required by the OS to cache rows. Even if you're not using
 # MyISAM tables, you should still set it to 8-64M as it will also be
 # used for internal temporary disk tables.
 key_buffer_size = 32M

 # MyISAM uses special tree-like cache to make bulk inserts (that is,
 # INSERT ... SELECT, INSERT ... VALUES (...), (...), ..., and LOAD DATA
 # INFILE) faster. This variable limits the size of the cache tree in
 # bytes per thread. Setting it to 0 will disable this optimisation.  Do
 # not set it larger than "key_buffer_size" for optimal performance.
 # This buffer is allocated when a bulk insert is detected.
 bulk_insert_buffer_size = 64M

 # This buffer is allocated when MySQL needs to rebuild the index in
 # REPAIR, OPTIMIZE, ALTER table statements as well as in LOAD DATA INFILE
 # into an empty table. It is allocated per thread so be careful with
 # large settings.
 myisam_sort_buffer_size = 128M

 # The maximum size of the temporary file MySQL is allowed to use while
 # recreating the index (during REPAIR, ALTER TABLE or LOAD DATA INFILE.
 # If the file-size would be bigger than this, the index will be created
 # through the key cache (which is slower).
 myisam_max_sort_file_size = 10G

 # If a table has more than one index, MyISAM can use more than one
 # thread to repair them by sorting in parallel. This makes sense if you
 # have multiple CPUs and plenty of memory.
 myisam_repair_threads = 1

 # Automatically check and repair not properly closed MyISAM tables.
 myisam_recover

 # *** INNODB Specific options ***

 # Use this option if you have a MySQL server with InnoDB support enabled
 # but you do not plan to use it. This will save memory and disk space
 # and speed up some things.
 #skip-innodb

 # Additional memory pool that is used by InnoDB to store metadata
 # information.  If InnoDB requires more memory for this purpose it will
 # start to allocate it from the OS.  As this is fast enough on most
 # recent operating systems, you normally do not need to change this
 # value. SHOW INNODB STATUS will display the current amount used.
 innodb_additional_mem_pool_size = 16M

 # InnoDB, unlike MyISAM, uses a buffer pool to cache both indexes and
 # row data. The bigger you set this the less disk I/O is needed to
 # access data in tables. On a dedicated database server you may set this
 # parameter up to 80% of the machine physical memory size. Do not set it
 # too large, though, because competition of the physical memory may
 # cause paging in the operating system.  Note that on 32bit systems you
 # might be limited to 2-3.5G of user level memory per process, so do not
 # set it too high.
 innodb_buffer_pool_size = 2G

 # InnoDB stores data in one or more data files forming the tablespace.
 # If you have a single logical drive for your data, a single
 # autoextending file would be good enough. In other cases, a single file
 # per device is often a good choice. You can configure InnoDB to use raw
 # disk partitions as well - please refer to the manual for more info
 # about this.
 innodb_data_file_path = ibdata1:10M:autoextend

 # Set this option if you would like the InnoDB tablespace files to be
 # stored in another location. By default this is the MySQL datadir.
 #innodb_data_home_dir = <directory>

 # Number of IO threads to use for async IO operations. This value is
 # hardcoded to 8 on Unix, but on Windows disk I/O may benefit from a
 # larger number.
 innodb_write_io_threads = 8
 innodb_read_io_threads = 8

 # If you run into InnoDB tablespace corruption, setting this to a nonzero
 # value will likely help you to dump your tables. Start from value 1 and
 # increase it until you're able to dump the table successfully.
 #innodb_force_recovery=1

 # Number of threads allowed inside the InnoDB kernel. The optimal value
 # depends highly on the application, hardware as well as the OS
 # scheduler properties. A too high value may lead to thread thrashing.
 innodb_thread_concurrency = 16

 # If set to 1, InnoDB will flush (fsync) the transaction logs to the
 # disk at each commit, which offers full ACID behavior. If you are
 # willing to compromise this safety, and you are running small
 # transactions, you may set this to 0 or 2 to reduce disk I/O to the
 # logs. Value 0 means that the log is only written to the log file and
 # the log file flushed to disk approximately once per second. Value 2
 # means the log is written to the log file at each commit, but the log
 # file is only flushed to disk approximately once per second.
 innodb_flush_log_at_trx_commit = 1

 # Speed up InnoDB shutdown. This will disable InnoDB to do a full purge
 # and insert buffer merge on shutdown. It may increase shutdown time a
 # lot, but InnoDB will have to do it on the next startup instead.
 #innodb_fast_shutdown

 # The size of the buffer InnoDB uses for buffering log data. As soon as
 # it is full, InnoDB will have to flush it to disk. As it is flushed
 # once per second anyway, it does not make sense to have it very large
 # (even with long transactions).
 innodb_log_buffer_size = 8M

 # Size of each log file in a log group. You should set the combined size
 # of log files to about 25%-100% of your buffer pool size to avoid
 # unneeded buffer pool flush activity on log file overwrite. However,
 # note that a larger logfile size will increase the time needed for the
 # recovery process.
 innodb_log_file_size = 256M

 # Total number of files in the log group. A value of 2-3 is usually good
 # enough.
 innodb_log_files_in_group = 3

 # Location of the InnoDB log files. Default is the MySQL datadir. You
 # may wish to point it to a dedicated hard drive or a RAID1 volume for
 # improved performance
 #innodb_log_group_home_dir

 # Maximum allowed percentage of dirty pages in the InnoDB buffer pool.
 # If it is reached, InnoDB will start flushing them out agressively to
 # not run out of clean pages at all. This is a soft limit, not
 # guaranteed to be held.
 innodb_max_dirty_pages_pct = 90

 # The flush method InnoDB will use for Log. The tablespace always uses
 # doublewrite flush logic. The default value is "fdatasync", another
 # option is "O_DSYNC".
 #innodb_flush_method=O_DSYNC

 # How long an InnoDB transaction should wait for a lock to be granted
 # before being rolled back. InnoDB automatically detects transaction
 # deadlocks in its own lock table and rolls back the transaction. If you
 # use the LOCK TABLES command, or other transaction-safe storage engines
 # than InnoDB in the same transaction, then a deadlock may arise which
 # InnoDB cannot notice. In cases like this the timeout is useful to
 # resolve the situation.
 innodb_lock_wait_timeout = 120

 [mysqldump]
 # Do not buffer the whole result set in memory before writing it to
 # file. Required for dumping very large tables
 quick

 max_allowed_packet = 16M

 [mysql]
 no-auto-rehash

 # Only allow UPDATEs and DELETEs that use keys.
 #safe-updates

 [myisamchk]
 key_buffer_size = 512M
 sort_buffer_size = 512M
 read_buffer = 8M
 write_buffer = 8M

 [mysqlhotcopy]
 interactive-timeout

 [mysqld_safe]
 # Increase the amount of open files allowed per process. Warning: Make
 # sure you have set the global system limit high enough! The high value
 # is required for a large number of opened tables
 open-files-limit = 8192

my-innodb-heavy-4G.ini

 # Example MySQL config file for very large systems.
 #
 # This is for a large system with memory of 1G-2G where the system runs mainly
 # MySQL.
 #
 # MySQL programs look for option files in a set of
 # locations which depend on the deployment platform.
 # You can copy this option file to one of those
 # locations. For information about these locations, see:
 # http://dev.mysql.com/doc/mysql/en/option-files.html
 #
 # In this file, you can use all long options that a program supports.
 # If you want to know which options a program supports, run the program
 # with the "--help" option.

 # The following options will be passed to all MySQL clients
 [client]
 #password    = your_password
 port        = 3306
 socket        = /tmp/mysql.sock

 # Here follows entries for some specific programs

 # The MySQL server
 [mysqld]
 port        = 3306
 socket        = /tmp/mysql.sock
 skip-external-locking
 key_buffer_size = 384M
 max_allowed_packet = 1M
 table_open_cache = 512
 sort_buffer_size = 2M
 read_buffer_size = 2M
 read_rnd_buffer_size = 8M
 myisam_sort_buffer_size = 64M
 thread_cache_size = 8
 query_cache_size = 32M
 # Try number of CPU's*2 for thread_concurrency
 thread_concurrency = 8

 # Don't listen on a TCP/IP port at all. This can be a security enhancement,
 # if all processes that need to connect to mysqld run on the same host.
 # All interaction with mysqld must be made via Unix sockets or named pipes.
 # Note that using this option without enabling named pipes on Windows
 # (via the "enable-named-pipe" option) will render mysqld useless!
 #
 #skip-networking

 # Replication Master Server (default)
 # binary logging is required for replication
 log-bin=mysql-bin

 # required unique id between 1 and 2^32 - 1
 # defaults to 1 if master-host is not set
 # but will not function as a master if omitted
 server-id    = 1

 # Replication Slave (comment out master section to use this)
 #
 # To configure this host as a replication slave, you can choose between
 # two methods :
 #
 # 1) Use the CHANGE MASTER TO command (fully described in our manual) -
 #    the syntax is:
 #
 #    CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
 #    MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
 #
 #    where you replace <host>, <user>, <password> by quoted strings and
 #    <port> by the master's port number (3306 by default).
 #
 #    Example:
 #
 #    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
 #    MASTER_USER='joe', MASTER_PASSWORD='secret';
 #
 # OR
 #
 # 2) Set the variables below. However, in case you choose this method, then
 #    start replication for the first time (even unsuccessfully, for example
 #    if you mistyped the password in master-password and the slave fails to
 #    connect), the slave will create a master.info file, and any later
 #    change in this file to the variables' values below will be ignored and
 #    overridden by the content of the master.info file, unless you shutdown
 #    the slave server, delete master.info and restart the slaver server.
 #    For that reason, you may want to leave the lines below untouched
 #    (commented) and instead use CHANGE MASTER TO (see above)
 #
 # required unique id between 2 and 2^32 - 1
 # (and different from the master)
 # defaults to 2 if master-host is set
 # but will not function as a slave if omitted
 #server-id       = 2
 #
 # The replication master for this slave - required
 #master-host     =   <hostname>
 #
 # The username the slave will use for authentication when connecting
 # to the master - required
 #master-user     =   <username>
 #
 # The password the slave will authenticate with when connecting to
 # the master - required
 #master-password =   <password>
 #
 # The port the master is listening on.
 # optional - defaults to 3306
 #master-port     =  <port>
 #
 # binary logging - not required for slaves, but recommended
 #log-bin=mysql-bin
 #
 # binary logging format - mixed recommended
 #binlog_format=mixed

 # Uncomment the following if you are using InnoDB tables
 #innodb_data_home_dir = C:\\mysql\\data\\
 #innodb_data_file_path = ibdata1:2000M;ibdata2:10M:autoextend
 #innodb_log_group_home_dir = C:\\mysql\\data\\
 # You can set .._buffer_pool_size up to 50 - 80 %
 # of RAM but beware of setting memory usage too high
 #innodb_buffer_pool_size = 384M
 #innodb_additional_mem_pool_size = 20M
 # Set .._log_file_size to 25 % of buffer pool size
 #innodb_log_file_size = 100M
 #innodb_log_buffer_size = 8M
 #innodb_flush_log_at_trx_commit = 1
 #innodb_lock_wait_timeout = 50

 [mysqldump]
 quick
 max_allowed_packet = 16M

 [mysql]
 no-auto-rehash
 # Remove the next comment character if you are not familiar with SQL
 #safe-updates

 [myisamchk]
 key_buffer_size = 256M
 sort_buffer_size = 256M
 read_buffer = 2M
 write_buffer = 2M

 [mysqlhotcopy]
 interactive-timeout

my-huge.ini

手順③

環境変数の定義

手順④

システム管理者として、命令「CMD」を開く、下記命令を行う

①初期化my.ini

C:\mysql-8.0.13-winx64\bin>mysqld --defaults-file="%MYSQL_HOME%\bin\my.ini" --initialize --console

②初期パスワードを取得

手順⑤

Windowsのサービスをインストールする

①命令：mysqld -install [サービス名]

②命令：

　　net start MySQL（起動）/ net stop MySQL（停止）/ sc delete MySQL（削除）

手順⑥

MysqlのDB起動

命令：

　　mysql -h ホストネーム:ポート -u ユーザID -p

　　(例：mysql -h localhost:3306 -u root -p)

パスワード変更：

　　方法一：

　　　　c:\>mysqladmin -u root -p [旧パスワード] [新パスワード]

　　方法二（MySQL5 OR MySQL8、違う）：

　　　　mysql>ALTER USER 'root'@'localhost' IDENTIFIED BY '新パスワード';

　　　　mysql>ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '新パスワード';

以上。