Mamp不会启动mysql服务器(mac)

Question

mamp up and running(wordpress)并没有问题.然后服务器突然停机,并没有再次启动.他们是关于这个主题的其他一些主题,但我还没有弄明白.我已经确认没有mysql进程....这是我的mysql_error_log:

161201 01:04:22 mysqld_safe Starting mysqld daemon with databases from /Applications/MAMP/db/mysql56
2016-12-01 01:04:23 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2016-12-01 01:04:23 0 [Note] /Applications/MAMP/Library/bin/mysqld (mysqld 5.6.33) starting as process 49478 ...
2016-12-01 01:04:23 49478 [Warning] Setting lower_case_table_names=2 because file system for /Applications/MAMP/db/mysql56/ is case insensitive
2016-12-01 01:04:23 49478 [Note] Plugin 'FEDERATED' is disabled.
2016-12-01 01:04:23 49478 [Note] InnoDB: Using atomics to ref count buffer pool pages
2016-12-01 01:04:23 49478 [Note] InnoDB: The InnoDB memory heap is disabled
2016-12-01 01:04:23 49478 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2016-12-01 01:04:23 49478 [Note] InnoDB: Memory barrier is not used
2016-12-01 01:04:23 49478 [Note] InnoDB: Compressed tables use zlib 1.2.8
2016-12-01 01:04:23 49478 [Note] InnoDB: Using CPU crc32 instructions
2016-12-01 01:04:23 49478 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2016-12-01 01:04:23 49478 [Note] InnoDB: Completed initialization of buffer pool
2016-12-01 01:04:23 49478 [Note] InnoDB: Highest supported file format is Barracuda.
2016-12-01 01:04:23 49478 [Note] InnoDB: The log sequence numbers 0 and 0 in ibdata files do not match the log sequence number 9969064 in the ib_logfiles!
2016-12-01 01:04:23 49478 [Note] InnoDB: Database was not shutdown normally!
2016-12-01 01:04:23 49478 [Note] InnoDB: Starting crash recovery.
2016-12-01 01:04:23 49478 [Note] InnoDB: Reading tablespace information from the .ibd files...
2016-12-01 01:04:23 49478 [ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace mysql/slave_worker_info uses space ID: 5 at filepath: ./mysql/slave_worker_info.ibd. Cannot open tablespace wordpress/wp_term_taxonomy which uses space ID: 5 at filepath: ./wordpress/wp_term_taxonomy.ibd
2016-12-01 01:04:23 7fffc52a43c0  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
InnoDB: Error: could not open single-table tablespace file ./wordpress/wp_term_taxonomy.ibd
InnoDB: We do not continue the crash recovery, because the table may become
InnoDB: corrupt if we cannot apply the log records in the InnoDB log to it.
InnoDB: To fix the problem and start mysqld:
InnoDB: 1) If there is a permission problem in the file and mysqld cannot
InnoDB: open the file, you should modify the permissions.
InnoDB: 2) If the table is not needed, or you can restore it from a backup,
InnoDB: then you can remove the .ibd file, and InnoDB will do a normal
InnoDB: crash recovery and ignore that table.
InnoDB: 3) If the file system or the disk is broken, and you cannot remove
InnoDB: the .ibd file, you can set innodb_force_recovery > 0 in my.cnf
InnoDB: and force InnoDB to continue crash recovery here.
161201 01:04:23 mysqld_safe mysqld from pid file /Applications/MAMP/tmp/mysql/mysql.pid ended

Answer 1

这意味着您的一个表已损坏.奇怪的是,这经常发生在机器崩溃时.这就是我修复它的方法:

1. 打开my.cnf(在MAMP中>文件>编辑模板> MySQL)
2. 添加行:innodb_force_recovery = 1
3. 保存并启动服务器

该表可能仍会被破坏,但mysql应该开始.这意味着您可能必须替换您的表:wp_term_taxonomy

注意:如果innodb_force_recovery = 1不起作用,请尝试上升数字:innodb_force_recovery = 2(等)但请谨慎行事.这是MySQL对此设置的警告:https: //dev.mysql.com/doc/refman/5.5/en/forcing-innodb-recovery.html

Answer 2

您的所有MAMP数据库都存储在/ Library/Application Support/appsolute/MAMP PRO/db/mysql56 /的单独文件夹中.根据你的错误日志中有一个问题./wordpress/wp_term_taxonomy.ib -也就是说,该表term_taxonomy在数据库的WordPress.解决这个问题的一种方法是简单地删除该数据库的所有痕迹 - 我希望你在它被破坏之前有一个副本来恢复它.这是你删除它的方式:

1. 退出MAMP服务器.

2. 删除数据库文件夹及其内容 - 在您的情况下,数据库名称是wordpress:

   $ rm -r /Library/Application\ Support/appsolute/MAMP\ PRO/db/mysql56/wordpress
   

3. 删除三个InnoDB文件ib_logfile0,ib_logfile1和ibdata1.不要害怕; 下次从MAMP中启动MySQL时,将创建新的副本.

   $ rm /Library/Application\ Support/appsolute/MAMP\ PRO/db/mysql56/ib_logfile0
   $ rm /Library/Application\ Support/appsolute/MAMP\ PRO/db/mysql56/ib_logfile1
   $ rm /Library/Application\ Support/appsolute/MAMP\ PRO/db/mysql56/ibdata1
   

4. 启动MAMP服务器.