I'm viewed log MySQL:
41130 22:09:20 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
141130 22:13:28 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
141130 22:13:28 [Note] Plugin 'FEDERATED' is disabled.
/usr/libexec/mysqld: Table 'mysql.plugin' doesn't exist
141130 22:13:28 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
141130 22:13:28 InnoDB: The InnoDB memory heap is disabled
141130 22:13:28 InnoDB: Mutexes and rw_locks use GCC atomic builtins
141130 22:13:28 InnoDB: Compressed tables use zlib 1.2.3
141130 22:13:28 InnoDB: Initializing buffer pool, size = 128.0M
141130 22:13:28 InnoDB: Completed initialization of buffer pool
141130 22:13:28 InnoDB: highest supported file format is Barracuda.
141130 22:13:30 InnoDB: 5.5.40 started; log sequence number 57584443446
141130 22:13:30 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306
141130 22:13:30 [Note] - '0.0.0.0' resolves to '0.0.0.0';
141130 22:13:30 [Note] Server socket created on IP: '0.0.0.0'.
141130 22:13:30 [Warning] 'user' entry 'root@localhost.localdomain' ignored in --skip-name-resolve mode.
141130 22:13:30 [Warning] 'user' entry '@localhost.localdomain' ignored in --skip-name-resolve mode.
141130 22:13:30 [ERROR] Missing system table mysql.proxies_priv; please run mysql_upgrade to create it
141130 22:13:30 [ERROR] Can't open and lock privilege tables: Table 'mysql.servers' doesn't exist
141130 22:13:30 [ERROR] Native table 'performance_schema'.'events_waits_current' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'events_waits_history' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'events_waits_history_long' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'setup_consumers' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'setup_instruments' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'setup_timers' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'performance_timers' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'threads' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'events_waits_summary_by_thread_by_event_name' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'events_waits_summary_by_instance' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'events_waits_summary_global_by_event_name' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'file_summary_by_event_name' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'file_summary_by_instance' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'mutex_instances' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'rwlock_instances' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'cond_instances' has the wrong structure
141130 22:13:30 [ERROR] Native table 'performance_schema'.'file_instances' has the wrong structure
141130 22:13:30 [ERROR] Column count of mysql.db is wrong. Expected 22, found 20. Created with MySQL 50095, now running 50540. Please use mysql_upgrade to fix this error.
141130 22:13:30 [ERROR] mysql.user has no `Event_priv` column at position 29
141130 22:13:30 [ERROR] Cannot open mysql.event
141130 22:13:30 [ERROR] Event Scheduler: An error occurred when initializing system tables. Disabling the Event Scheduler.
141130 22:13:30 [Note] /usr/libexec/mysqld: ready for connections.
Version: '5.5.40' socket: '/var/lib/mysql/mysql.sock' port: 3306 Distributed by The IUS Community Project
141130 22:23:20 [ERROR] Column count of mysql.proc is wrong. Expected 20, found 16. Created with MySQL 50095, now running 50540. Please use mysql_upgrade to fix this error.