mysql-8.0.16-winx64 安裝

Suggestion [3,General]: 找不到命令 /mysqld.exe，但它確實存在于當前位置。默認情況下，Windows PowerShell 不會從當前位置加
載命令。如果信任此命令，請改為鍵入“.\/mysqld.exe”。有關詳細信息，請參閱 "get-help about_Command_Precedence"。
PS D:\Development\DataBase\mysql-8.0.16-winx64\bin>
PS D:\Development\DataBase\mysql-8.0.16-winx64\bin>
PS D:\Development\DataBase\mysql-8.0.16-winx64\bin>
PS D:\Development\DataBase\mysql-8.0.16-winx64\bin> ./mysqld --initialize --console
2019-07-26T13:04:40.868710Z 0 [System] [MY-013169] [Server] D:\Development\DataBase\mysql-8.0.16-winx64\bin\mysqld.exe (
mysqld 8.0.16) initializing of server in progress as process 11000
2019-07-26T13:04:40.875362Z 0 [Warning] [MY-013242] [Server] --character-set-server: 'utf8' is currently an alias for th
e character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to
be unambiguous.
2019-07-26T13:05:01.278758Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: KR+jt(_k
q1G7
2019-07-26T13:05:08.823938Z 0 [System] [MY-013170] [Server] D:\Development\DataBase\mysql-8.0.16-winx64\bin\mysqld.exe (
mysqld 8.0.16) initializing of server has completed
PS D:\Development\DataBase\mysql-8.0.16-winx64\bin>

PS D:\Development\DataBase\mysql-8.0.16-winx64\bin> ./mysqld install
Service successfully installed.
PS D:\Development\DataBase\mysql-8.0.16-winx64\bin>
PS D:\Development\database\mysql-8.0.16-winx64\bin> ./mysql -u root -p
Enter password: ****
ERROR 2003 (HY000): Can't connect to MySQL server on 'localhost' (10061)
PS D:\Development\database\mysql-8.0.16-winx64\bin> net start mysql
MySQL 服務正在啟動 .
MySQL 服務已經啟動成功。

PS D:\Development\database\mysql-8.0.16-winx64\bin> ./mysql -u root -p
Enter password: ****
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.16

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Oracle is a registered trademark of Oracle Corporation and/or its
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Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

參考其他博主文章，找到解決方法：
從8.0.11版本起，不再像mysql5.7及以前版本那樣，設置用戶密碼時默認的驗證方式為caching_sha2_password，如果發現升級mysql8.0.11后原有的程序不能連接mysql，可迅速在mysql command line client客戶端用下面的命令設置成mysql5.7及以前版本的密碼驗證方式，同時MYSQL8.0.11下修改密碼的方式與原先也不大一樣，原先的部分修改密碼的命令在mysql8.0.11下不能使用。
use mysql
ALTER USER ‘root’@’localhost’ IDENTIFIED WITH mysql_native_password BY ‘你的密碼’;
FLUSH PRIVILEGES;

該caching_sha2_password和 sha256_password認證插件提供比mysql_native_password插件更安全的密碼加密 ，并 caching_sha2_password提供了比更好的性能sha256_password。由于這些優越的安全性和性能特性 caching_sha2_password它是MySQL 8.0首選的身份驗證插件，而且也是默認的身份驗證插件而不是 mysql_native_password。此更改會影響服務器和libmysqlclient 客戶端庫；目前來說和經常使用的客戶端軟件兼容性不好。