将Mysql版本升级到5.6后，MySQL服务器已经消失

我已经将MySQL版本从5.1升级到5.6。

我遵循的步骤是：

• 我卸载了旧版本并安装了新版本。
• 重置mysql root密码

• 恢复特定DB的数据库转储

  现在我需要创build新的用户，并授予服务器的所有权限。 但是，当创build用户，我得到错误。

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  mysql> CREATE USER'newuser'@'localhost'IDENTIFIED BY'password';

  ERROR 2006 (HY000): MySQL server has gone away No connection. Trying to reconnect... ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111) ERROR: Can't connect to the server 

我也在PhpMyadmin中得到相同的错误。

我目前修改了其他人所build议的设置

 innodb_force_recovery = 1 wait_timeout = 28800 connect_timeout = 28800 

错误日志：

  12:54:24 UTC - mysqld got signal 11 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=1048576 read_buffer_size=131072 max_used_connections=1 max_threads=151 thread_count=1 connection_count=1 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 61073 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x7f8182657500 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 7f8152cb5e40 thread_stack 0x30000 /usr/sbin/mysqld(my_print_stacktrace+0x2c)[0x7f81817481cc] /usr/sbin/mysqld(handle_fatal_signal+0x3d2)[0x7f81814a8572] /lib/x86_64-linux-gnu/libpthread.so.0(+0x10340)[0x7f81801bd340] /usr/sbin/mysqld(+0x47f0b4)[0x7f81814d10b4] /usr/sbin/mysqld(_Z17mysql_create_userP3THDR4ListI11st_lex_userE+0x371)[0x7f81814d6e91] /usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x211d)[0x7f8181531b8d] /usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x3c8)[0x7f8181536308] /usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x2363)[0x7f8181538d03] /usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x1f5)[0x7f81814fe715] /usr/sbin/mysqld(handle_one_connection+0x40)[0x7f81814fe770] /usr/sbin/mysqld(pfs_spawn_thread+0x140)[0x7f818178a370] /lib/x86_64-linux-gnu/libpthread.so.0(+0x8182)[0x7f81801b5182] /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f817f8d847d] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (7f8138005030): is an invalid pointer Connection ID (thread ID): 5 Status: NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. 2015-07-03 18:24:25 30722 [Warning] Using unique option prefix myisam-recover instead of myisam-recover-options is deprecated and will be removed in a future release. Please use the full name instead. 2015-07-03 18:24:25 30722 [Note] Plugin 'FEDERATED' is disabled. 2015-07-03 18:24:25 30722 [Note] InnoDB: Using atomics to ref count buffer pool pages 2015-07-03 18:24:25 30722 [Note] InnoDB: The InnoDB memory heap is disabled 2015-07-03 18:24:25 30722 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2015-07-03 18:24:25 30722 [Note] InnoDB: Compressed tables use zlib 1.2.8 2015-07-03 18:24:25 30722 [Note] InnoDB: Using Linux native AIO 2015-07-03 18:24:25 30722 [Note] InnoDB: Using CPU crc32 instructions 2015-07-03 18:24:25 30722 [Note] InnoDB: Initializing buffer pool, size = 128.0M 2015-07-03 18:24:25 30722 [Note] InnoDB: Completed initialization of buffer pool 2015-07-03 18:24:25 30722 [Note] InnoDB: Highest supported file format is Barracuda. 2015-07-03 18:24:25 30722 [Note] InnoDB: The log sequence numbers 38271843239 and 38271843239 in ibdata files do not match the log sequence number 38271843249 in the ib_logfiles! 2015-07-03 18:24:25 30722 [Note] InnoDB: Database was not shutdown normally! 2015-07-03 18:24:25 30722 [Note] InnoDB: Starting crash recovery. 2015-07-03 18:24:25 30722 [Note] InnoDB: Reading tablespace information from the .ibd files... 2015-07-03 18:24:25 30722 [Note] InnoDB: Restoring possible half-written data pages 2015-07-03 18:24:25 30722 [Note] InnoDB: from the doublewrite buffer... 2015-07-03 18:24:25 30722 [Note] InnoDB: 128 rollback segment(s) are active. 2015-07-03 18:24:25 30722 [Note] InnoDB: Waiting for purge to start 2015-07-03 18:24:25 30722 [Note] InnoDB: 5.6.19 started; log sequence number 38271843249 2015-07-03 18:24:25 30722 [Note] Server hostname (bind-address): '127.0.0.1'; port: 3306 2015-07-03 18:24:25 30722 [Note] - '127.0.0.1' resolves to '127.0.0.1'; 2015-07-03 18:24:25 30722 [Note] Server socket created on IP: '127.0.0.1'. 2015-07-03 18:24:25 30722 [Note] Event Scheduler: Loaded 0 events 2015-07-03 18:24:25 30722 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.6.19-0ubuntu0.14.04.1' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Ubuntu)