mysql8安装以及配置、参数优化

1.配置bin到path

2.mysql解压版本在根目录创建my.ini

3.初始化数据库：mysqld --initialize --console ，这里会生成一个初始密码，需要记录下来，否则需要删除datadir目录重新初始化

D:\dev\mysql-8.0.11-winx64>mysqld --initialize --console

2018-06-17T21:06:14.524974Z 0 [System] [MY-013169] [Server] D:\dev\mysql-8.0.11-winx64\bin\mysqld.exe (mysqld 8.0.11) initializing of server in progress as process 3768

2018-06-17T21:06:31.388939Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: i7TntpLMiL,s

2018-06-17T21:06:42.137554Z 0 [System] [MY-013170] [Server] D:\dev\mysql-8.0.11-winx64\bin\mysqld.exe (mysqld 8.0.11) initializing of server has completed

 

4.安装服务：mysqld --install 服务名 ，服务名可以是任意，最好如：mysql5、mysql8等以便区分（这里以mysql8作为服务名）

mysqld --verbose --help 查看帮助（帮助文档参数较大，需要打印到文本查看）

卸载服务： mysqld --remove mysql8

D:\dev\mysql-8.0.11-winx64>mysqld --install MySQL8

Service successfully installed.

打开MySQL8查看：

启动~~~（我这边自己电脑可执行文件路径始终隐射到C:\Program Files\MySQL，而不是我实际安装目录）

5.更改密码：（需要手动启动上面到服务）

mysql -u root -p 输入第3步的密码

在mysql shell中执行：

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '新密码'；

注：修改默认密码验证插件：shell> mysql --default-auth=mysql_old_password ...

mysql_old_password为老版本验证方式，到mysql5.7.5已经废弃。新版使用mysql_native_password

https://dev.mysql.com/doc/refman/5.7/en/old-native-pluggable-authentication.html

 

my.ini文件内容：

实际测试中包含表格中参数都是可以通过初始化的，以下几个参数会报错：

'query_cache_size=0'

'innodb_additional_mem_pool_size=2M'

'query_cache_type=0'

以下为正确的，需要修改对应basedir和datadir

# Other default tuning values # MySQL Server Instance Configuration File # ---------------------------------------------------------------------- # Generated by the MySQL Server Instance Configuration Wizard # # # Installation Instructions # ---------------------------------------------------------------------- # # On Linux you can copy this file to /etc/my.cnf to set global options, # mysql-data-dir/my.cnf to set server-specific options # (@localstatedir@ for this installation) or to # ~/.my.cnf to set user-specific options. # # On Windows you should keep this file in the installation directory # of your server (e.g. C:\Program Files\MySQL\MySQL Server X.Y). To # make sure the server reads the config file use the startup option # "--defaults-file". # # To run run the server from the command line, execute this in a # command line shell, e.g. # mysqld --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini" # # To install the server as a Windows service manually, execute this in a # command line shell, e.g. # mysqld --install MySQLXY --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini" # # And then execute this in a command line shell to start the server, e.g. # net start MySQLXY # # # Guildlines for editing this file # ---------------------------------------------------------------------- # # In this file, you can use all long options that the program supports. # If you want to know the options a program supports, start the program # with the "--help" option. # # More detailed information about the individual options can also be # found in the manual. # # For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html # # # CLIENT SECTION # ---------------------------------------------------------------------- # # 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] no-beep   # pipe # socket=0.0 port=3306   [mysql]   default-character-set=utf8     # SERVER SECTION # ---------------------------------------------------------------------- # # The following options will be read by the MySQL Server. Make sure that # you have installed the server correctly (see above) so it reads this # file. # # server_type=3 [mysqld]   # The next three options are mutually exclusive to SERVER_PORT below. # skip-networking   # enable-named-pipe   # shared-memory   # shared-memory-base-name=MYSQL   # The Pipe the MySQL Server will use # socket=MYSQL   # The TCP/IP Port the MySQL Server will listen on port=3306   # Path to installation directory. All paths are usually resolved relative to this. #basedir="C:/Program Files/MySQL/MySQL Server 5.6/"   # Path to the database root #datadir=C:/ProgramData/MySQL/MySQL Server 5.6/Data   basedir=D:/dev/mysql-8.0.11-winx64/ datadir=D:/dev/mysql-8.0.11-winx64/data     # The default character set that will be used when a new schema or table is # created and no character set is defined character-set-server=utf8   # The default storage engine that will be used when create new tables when default-storage-engine=INNODB     # Enable Windows Authentication # plugin-load=authentication_windows.dll     # Server Id. server-id=1   # 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=151       # 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=2000   # 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=12M   # 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=10   #*** MyISAM Specific options # 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=100G   # If the temporary file used for fast index creation would be bigger # than using the key cache by the amount specified here, then prefer the # key cache method. This is mainly used to force long character keys in # large tables to use the slower key cache method to create the index. myisam_sort_buffer_size=15M   # 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=8M   # Size of the buffer used for doing full table scans of MyISAM tables. # Allocated per thread, if a full scan is needed. read_buffer_size=30K read_rnd_buffer_size=256K   #*** INNODB Specific options *** # innodb_data_home_dir=0.0   # 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     # 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   # 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=1M   # 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=32M   # 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=48M   # 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=9   # The increment size (in MB) for extending the size of an auto-extend InnoDB system tablespace file when it becomes full. innodb_autoextend_increment=64   # The number of regions that the InnoDB buffer pool is divided into. # For systems with buffer pools in the multi-gigabyte range, dividing the buffer pool into separate instances can improve concurrency, # by reducing contention as different threads read and write to cached pages. innodb_buffer_pool_instances=8   # Determines the number of threads that can enter InnoDB concurrently. innodb_concurrency_tickets=5000   # Specifies how long in milliseconds (ms) a block inserted into the old sublist must stay there after its first access before # it can be moved to the new sublist. innodb_old_blocks_time=1000   # It specifies the maximum number of .ibd files that MySQL can keep open at one time. The minimum value is 10. innodb_open_files=300   # When this variable is enabled, InnoDB updates statistics during metadata statements. innodb_stats_on_metadata=0   # When innodb_file_per_table is enabled (the default in 5.6.6 and higher), InnoDB stores the data and indexes for each newly created table # in a separate .ibd file, rather than in the system tablespace. innodb_file_per_table=1   # Use the following list of values: 0 for crc32, 1 for strict_crc32, 2 for innodb, 3 for strict_innodb, 4 for none, 5 for strict_none. innodb_checksum_algorithm=0   # The number of outstanding connection requests MySQL can have. # This option is useful when the main MySQL thread gets many connection requests in a very short time. # It then takes some time (although very little) for the main thread to check the connection and start a new thread. # The back_log value indicates how many requests can be stacked during this short time before MySQL momentarily # stops answering new requests. # You need to increase this only if you expect a large number of connections in a short period of time. back_log=80   # If this is set to a nonzero value, all tables are closed every flush_time seconds to free up resources and # synchronize unflushed data to disk. # This option is best used only on systems with minimal resources. flush_time=0   # The minimum size of the buffer that is used for plain index scans, range index scans, and joins that do not use # indexes and thus perform full table scans. join_buffer_size=256K   # The maximum size of one packet or any generated or intermediate string, or any parameter sent by the # mysql_stmt_send_long_data() C API function. max_allowed_packet=4M   # If more than this many successive connection requests from a host are interrupted without a successful connection, # the server blocks that host from performing further connections. max_connect_errors=100   # Changes the number of file descriptors available to mysqld. # You should try increasing the value of this option if mysqld gives you the error "Too many open files". open_files_limit=4161   # If you see many sort_merge_passes per second in SHOW GLOBAL STATUS output, you can consider increasing the # sort_buffer_size value to speed up ORDER BY or GROUP BY operations that cannot be improved with query optimization # or improved indexing. sort_buffer_size=256K   # The number of table definitions (from .frm files) that can be stored in the definition cache. # If you use a large number of tables, you can create a large table definition cache to speed up opening of tables. # The table definition cache takes less space and does not use file descriptors, unlike the normal table cache. # The minimum and default values are both 400. table_definition_cache=1400   # Specify the maximum size of a row-based binary log event, in bytes. # Rows are grouped into events smaller than this size if possible. The value should be a multiple of 256. binlog_row_event_max_size=8K   # If the value of this variable is greater than 0, a replication slave synchronizes its master.info file to disk. # (using fdatasync()) after every sync_master_info events. sync_master_info=10000   # If the value of this variable is greater than 0, the MySQL server synchronizes its relay log to disk. # (using fdatasync()) after every sync_relay_log writes to the relay log. sync_relay_log=10000   # If the value of this variable is greater than 0, a replication slave synchronizes its relay-log.info file to disk. # (using fdatasync()) after every sync_relay_log_info transactions. sync_relay_log_info=10000