Làm cách nào để di chuyển thư mục dữ liệu mysql trong vùng chứa docker?

Question

Tôi có một thùng chứa docker chạy mysql-5.5 với khối lượng dữ liệu máy chủ. Tôi đang nâng cấp vùng chứa của mình lên mysql-5.6. Tôi đang bắt đầu một vùng chứa mới với cùng khối lượng máy chủ. MySQL đã bị rơi trong vùng chứa do sự cố của bảng mysql.user.

[ERROR] Fatal error: Can't open and lock privilege tables: 
Incorrect key file for table 'user'; try to repair it 
160523 12:04:13 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended 

Tôi đã thử các sau đây để khắc phục điều đó:

root@container# mysqld --skip-grant-tables; 
root@container# mysql -uroot -ppassword 
mysql> repair table user USE_FRM; 
+------------+--------+----------+--------------------------------------------------+ 
| Table  | Op  | Msg_type | Msg_text           | 
+------------+--------+----------+--------------------------------------------------+ 
| mysql.user | repair | info  | Key 1 - Found wrong stored record at 0   | 
| mysql.user | repair | info  | Found block that points outside data file at 184 | 
| mysql.user | repair | info  | Found block that points outside data file at 292 | 
| mysql.user | repair | info  | Found block that points outside data file at 296 | 
| mysql.user | repair | info  | Found block that points outside data file at 300 | 
| mysql.user | repair | info  | Found block that points outside data file at 304 | 
| mysql.user | repair | info  | Found block that points outside data file at 308 | 
| mysql.user | repair | info  | Found block that points outside data file at 312 | 
| mysql.user | repair | info  | Found block that points outside data file at 316 | 
| mysql.user | repair | info  | Found block that points outside data file at 340 | 
| mysql.user | repair | info  | Found block that points outside data file at 392 | 
| mysql.user | repair | info  | Found block that points outside data file at 396 | 
| mysql.user | repair | info  | Found block that points outside data file at 400 | 
| mysql.user | repair | info  | Found block that points outside data file at 404 | 
| mysql.user | repair | info  | Found block that points outside data file at 408 | 
| mysql.user | repair | info  | Found block that points outside data file at 412 | 
| mysql.user | repair | info  | Found block that points outside data file at 416 | 
| mysql.user | repair | info  | Found block that points outside data file at 420 | 
| mysql.user | repair | info  | Found block that points outside data file at 448 | 
| mysql.user | repair | info  | Found block that points outside data file at 452 | 
| mysql.user | repair | info  | Found block that points outside data file at 456 | 
| mysql.user | repair | info  | Found block that points outside data file at 460 | 
| mysql.user | repair | info  | Found block that points outside data file at 464 | 
| mysql.user | repair | info  | Found block that points outside data file at 468 | 
| mysql.user | repair | info  | Found block that points outside data file at 472 | 
| mysql.user | repair | info  | Found block that points outside data file at 500 | 
| mysql.user | repair | info  | Found block that points outside data file at 504 | 
| mysql.user | repair | info  | Found block that points outside data file at 508 | 
| mysql.user | repair | info  | Found block that points outside data file at 512 | 
| mysql.user | repair | info  | Found block that points outside data file at 516 | 
| mysql.user | repair | info  | Found block that points outside data file at 520 | 
| mysql.user | repair | info  | Found block that points outside data file at 524 | 
| mysql.user | repair | info  | Found block that points outside data file at 528 | 
| mysql.user | repair | info  | Found block that points outside data file at 556 | 
| mysql.user | repair | info  | Found block that points outside data file at 560 | 
| mysql.user | repair | info  | Found block that points outside data file at 564 | 
| mysql.user | repair | info  | Found block that points outside data file at 568 | 
| mysql.user | repair | info  | Found block that points outside data file at 572 | 
| mysql.user | repair | info  | Found block that points outside data file at 576 | 
| mysql.user | repair | info  | Found block that points outside data file at 580 | 
| mysql.user | repair | info  | Found block that points outside data file at 604 | 
| mysql.user | repair | info  | Found block that points outside data file at 608 | 
| mysql.user | repair | info  | Found block that points outside data file at 612 | 
| mysql.user | repair | info  | Found block that points outside data file at 616 | 
| mysql.user | repair | info  | Found block that points outside data file at 620 | 
| mysql.user | repair | info  | Found block that points outside data file at 624 | 
| mysql.user | repair | info  | Found block that points outside data file at 628 | 
| mysql.user | repair | info  | Found block that points outside data file at 632 | 
| mysql.user | repair | status | OK            | 
+------------+--------+----------+--------------------------------------------------+ 
49 rows in set (0.00 sec) 

Lỗi: tôi không thể đăng nhập vào máy chủ mysql sử dụng username/mật khẩu. Bất kỳ ý tưởng về làm thế nào tôi nên nâng cấp dữ liệu mysql của tôi?

root@container# mysql -uroot -ppassword 
Warning: Using a password on the command line interface can be insecure. 
Welcome to the MySQL monitor. Commands end with ; or \g. 
Your MySQL connection id is 2 
Server version: 5.6.30-0ubuntu0.14.04.1 (Ubuntu) 

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. 

Oracle is a registered trademark of Oracle Corporation and/or its 
affiliates. Other names may be trademarks of their respective 
owners. 

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. 

mysql> exit; 
Bye 
root@container# ps -ef|grep mysql    
root  1509 31492 0 12:15 ?  00:00:00 grep --color=auto mysql 
mysql 31281 4823 0 12:06 ?  00:00:01 mysqld --skip-grant-tables --user=mysql 
root@container# kill -9 31281 
root@container# ps -ef|grep mysql 
root  1698 31492 0 12:16 ?  00:00:00 grep --color=auto mysql 
root@container# mysqld_safe & 
[1] 1700 
root@container# 160523 12:16:34 mysqld_safe Can't log to error log and syslog at the same time. Remove all --log-error configuration  options for --syslog to take effect. 
160523 12:16:34 mysqld_safe Logging to '/var/log/mysql/error.log'. 
160523 12:16:34 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql 
^C 
root@container# mysql -uroot -ppassword 
Warning: Using a password on the command line interface can be insecure. 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES) 
root@container# 

tham khảo:

MySQL Fatal error: Can't open and lock privilege tables: Incorrect file format 'user' https://bugs.mysql.com/bug.php?id=68385

Answer 1

Tôi tin rằng bạn cần phải sửa đổi dockerfile của bạn để chạy mysql-upgrade trước khi bắt đầu mysql. Mặc dù bạn có thể cần phải sửa chữa nó cũng như được mô tả trong các tài liệu tham khảo bạn cung cấp. Bạn chỉ cần chạy nó một lần, sau đó bạn có thể xóa nó khỏi dockerfile. (Tôi giả sử cơ sở dữ liệu thực sự được lưu trữ trên hệ thống tập tin máy chủ và gắn kết trong Docker.)

Answer 2

Bạn có thể bắt đầu MySQL bằng cách sử dụng hình ảnh 5.5 và chạy mysqldump chống lại nó

docker run --rm --link mysqld mysql:5.5 \ 
     mysqldump -h mysqld --all-databases > /your/host/machine/ 

Và sau đó bắt đầu một container mới sử dụng hình ảnh 5.6 và khởi tạo nó bằng cách sử dụng kết xuất SQL

docker run -v /data/your_dump.sql:/docker-entrypoint-initdb.d/dump.sql mysql:5.6