MySQL5.70安裝過程及發現問題解決方案
阿新 • • 發佈：2018-12-23
一、如何安裝？
1、【執行】->【cmd】開啟小黑視窗。定位到MySQL安裝目錄【我的D:\Program Files\mysql-5.7.9-winx64】的bin目錄下，輸入【mysqld -install】。如下圖，表示安裝成功
2、開啟MySQL安裝目錄，找到【my-default.ini】，配置一些簡單的資訊。
# These are commonly set, remove the # and set as required. basedir = D:\Program Files\mysql-5.7.9-winx64 datadir = D:\Program Files\mysql-5.7.9-winx64\data port = 3306 # server_id = .....
3、輸入【mysqld --initialize】，為MySQL進行初始化。初始化過程可能需要持續一會，當出現如下介面，且在MySQL安裝目錄中的data資料夾有內容時，表示成功初始化了。
如果略去該步驟，在嘗試通過命令【mysqld --console】追蹤錯誤資訊時會出現如下錯誤。由於新版本的MySQL在啟動時需要初始化一寫表。因此，請不要省略此步驟。
D:\Program Files\mysql-5.7.9-winx64\bin><span style="color:#ff6666;"><strong>mysqld --console</strong></span> mysqld: Can't change dir to 'D:\Program Files\mysql-5.7.9-winx64\data\' (Errcode : 2 - No such file or directory) 2015-12-18T08:54:25.263539Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see doc umentation for more details). 2015-12-18T08:54:25.263539Z 0 [Warning] Insecure configuration for --secure-file -priv: Current value does not restrict location of generated files. Consider set ting it to a valid, non-empty path. 2015-12-18T08:54:25.263539Z 0 [Note] mysqld (mysqld 5.7.9) starting as process 6 3944 ... 2015-12-18T08:54:25.265539Z 0 [Warning] <span style="color:#ff6666;">Can't create test file D:\Program Files\ mysql-5.7.9-winx64\data\Richard-PC.lower-test</span> 2015-12-18T08:54:25.265539Z 0 [Warning]<span style="color:#ff6666;"> Can't create test file D:\Program Files\ mysql-5.7.9-winx64\data\Richard-PC.lower-test</span> 2015-12-18T08:54:25.266539Z 0 [ERROR] failed to set datadir to <span style="color:#ff6666;">D:\Program Files\ mysql-5.7.9-winx64\data\</span> 2015-12-18T08:54:25.266539Z 0 [ERROR] Aborting 2015-12-18T08:54:25.266539Z 0 [Note] Binlog end 2015-12-18T08:54:25.267539Z 0 [Note] mysqld: Shutdown complete
4、輸入【mysqld -install】安裝MySQL服務。具體啟動過程略。
二、無法執行？在成功啟動MySQL後，通過連線MySQL資料庫出現如下錯誤
1045- access denied for user 'root'@'localhost' using password yes按照網上的方式，結合自己的實操經驗，總結如下解決辦法
1、首先輸入【mysqld --skip-grant-tables】，這條命令是作用了跳過認證直接進入（啟動）MySQL。
2、嘗試 輸入【update user set password=PASSWORD('123456') where user='root';】。嘗試修改Root密碼為123456。
可能出現的錯誤。因此，此步驟不可解決問題。
ERROR 1054 (42S22): Unknown column 'password' in 'field list'ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables opt
ion so it cannot execute this statement如果出現上述錯誤，請輸入下面紅色標註的命令，設定可讀屬性
mysql> <span style="color:#ff6666;">set global read_only=1;</span>
Query OK, 0 rows affected (0.00 sec)
mysql> <span style="color:#ff6666;">flush privileges;</span>
Query OK, 0 rows affected (0.00 sec)出現如下錯誤。
mysql> GRANT ALL ON *.* to 'root'@'localhost' IDENTIFIED BY '11111' with grant o
ption;
ERROR 1131 (42000): You are using MySQL as an anonymous user and anonymous users
are not allowed to change passwords4、第三步不可行的時候，可嘗試換種思路解決。重新建立一個管理員許可權的賬戶，(我這邊用的時richard,按需修改）
mysql> GRANT ALL ON *.* to '<span style="color:#ff6666;">richard</span>'@'localhost' IDENTIFIED BY '11111' with gran
t option;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)然後重啟MySQL資料庫，用新建的管理員賬戶【richard】登入。
連線成功5、用【richard】賬戶登入，併為root賬戶修改密碼。
GRANT ALL ON *.* to 'root'@'localhost' IDENTIFIED BY '11111' with grant option;
flush privileges;