Percona Server Shutdown

Please help me Percona Server failed after some hours

2016-03-04 04:00:09 5016 [Warning] IP address ‘58.218.199.247’ could not be resolved: Name or service not kn$
2016-03-04 04:55:55 5016 [Warning] Hostname ‘atlantic381.dedicatedpanel.com’ does not resolve to '188.138.1.$
2016-03-04 04:55:55 5016 [Note] Hostname ‘atlantic381.dedicatedpanel.com’ has the following IP addresses:
2016-03-04 04:55:55 5016 [Note] - 62.75.212.215
2016-03-04 10:50:34 5016 [Warning] IP address ‘60.191.129.138’ could not be resolved: Name or service not kn$
2016-03-04 11:23:58 5016 [Note] /usr/sbin/mysqld: Normal shutdown

2016-03-04 11:23:58 5016 [Note] Giving 27 client threads a chance to die gracefully
2016-03-04 11:23:58 5016 [Note] Event Scheduler: Purging the queue. 0 events
2016-03-04 11:23:58 5016 [Note] Shutting down slave threads
2016-03-04 11:24:00 5016 [Note] Forcefully disconnecting 25 remaining clients
2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210684 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210829 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210707 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210821 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210827 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210822 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210706 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210818 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210820 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210828 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210656 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210745 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210819 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210815 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210808 user: ‘*****’

2016-03-04 11:24:00 5016 [Warning] /usr/sbin/mysqld: Forcing close of thread 210778 user: ‘*****’

2016-03-04 11:24:00 5016 [Note] Binlog end
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘partition’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘PERFORMANCE_SCHEMA’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘BLACKHOLE’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_CHANGED_PAGES’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_SYS_DATAFILES’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_SYS_TABLESPACES’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_SYS_FOREIGN_COLS’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_SYS_FOREIGN’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_SYS_FIELDS’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_SYS_COLUMNS’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_SYS_INDEXES’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_SYS_TABLESTATS’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_SYS_TABLES’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_FT_INDEX_TABLE’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_FT_INDEX_CACHE’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_FT_CONFIG’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_FT_BEING_DELETED’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_FT_DELETED’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_FT_DEFAULT_STOPWORD’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_METRICS’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_BUFFER_POOL_STATS’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_BUFFER_PAGE_LRU’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_BUFFER_PAGE’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_CMP_PER_INDEX_RESET’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_CMP_PER_INDEX’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_CMPMEM_RESET’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_CMPMEM’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_CMP_RESET’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_CMP’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_CMP’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_LOCK_WAITS’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_LOCKS’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘INNODB_TRX’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘XTRADB_RSEG’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘XTRADB_INTERNAL_HASH_TABLES’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘XTRADB_READ_VIEW’
2016-03-04 11:24:00 5016 [Note] Shutting down plugin ‘InnoDB’
2016-03-04 11:24:00 5016 [Note] InnoDB: FTS optimize thread exiting.
2016-03-04 11:24:00 5016 [Note] InnoDB: Starting shutdown…
2016-03-04 11:24:00 7f44777fe700 InnoDB: Dumping buffer pool(s) to .//ib_buffer_pool
2016-03-04 11:24:00 7f44777fe700 InnoDB: Buffer pool(s) dump completed at 160304 11:24:00
2016-03-04 11:24:02 5016 [Note] InnoDB: Shutdown completed; log sequence number 27507668574
2016-03-04 11:24:02 5016 [Note] Shutting down plugin ‘ARCHIVE’
2016-03-04 11:24:02 5016 [Note] Shutting down plugin ‘CSV’
2016-03-04 11:24:02 5016 [Note] Shutting down plugin ‘MRG_MYISAM’
2016-03-04 11:24:02 5016 [Note] Shutting down plugin ‘MyISAM’
2016-03-04 11:24:02 5016 [Note] Shutting down plugin ‘MEMORY’
2016-03-04 11:24:02 5016 [Note] Shutting down plugin ‘sha256_password’
2016-03-04 11:24:02 5016 [Note] Shutting down plugin ‘mysql_old_password’
2016-03-04 11:24:02 5016 [Note] Shutting down plugin ‘mysql_native_password’
2016-03-04 11:24:02 5016 [Note] Shutting down plugin ‘binlog’
2016-03-04 11:24:02 5016 [Note] /usr/sbin/mysqld: Shutdown complete

160304 11:24:02 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
160304 11:24:56 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
2016-03-04 11:24:58 0 [Note] /usr/sbin/mysqld (mysqld 5.6.28-76.1-log) starting as process 3148$
2016-03-04 11:24:58 3148 [Note] Plugin ‘FEDERATED’ is disabled.
2016-03-04 11:24:58 3148 [Note] InnoDB: Using atomics to ref count buffer pool pages
2016-03-04 11:24:58 3148 [Note] InnoDB: The InnoDB memory heap is disabled
2016-03-04 11:24:58 3148 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2016-03-04 11:24:58 3148 [Note] InnoDB: Memory barrier is not used
2016-03-04 11:24:58 3148 [Note] InnoDB: Compressed tables use zlib 1.2.3
2016-03-04 11:24:58 3148 [Note] InnoDB: Using Linux native AIO
2016-03-04 11:24:58 3148 [Note] InnoDB: Using CPU crc32 instructions
2016-03-04 11:24:58 3148 [Note] InnoDB: Initializing buffer pool, size = 252.0M
2016-03-04 11:24:58 3148 [Note] InnoDB: Completed initialization of buffer pool
2016-03-04 11:24:58 3148 [Note] InnoDB: Highest supported file format is Barracuda.
2016-03-04 11:24:58 3148 [Note] InnoDB: 128 rollback segment(s) are active.
2016-03-04 11:24:58 3148 [Note] InnoDB: Waiting for purge to start
2016-03-04 11:24:58 3148 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.28-76.1 st$
2016-03-04 11:24:58 7f0d2dffb700 InnoDB: Loading buffer pool(s) from .//ib_buffer_pool
2016-03-04 11:24:58 3148 [Note] RSA private key file not found: /var/lib/mysql//private_key.pem$
2016-03-04 11:24:58 3148 [Note] RSA public key file not found: /var/lib/mysql//public_key.pem. $
2016-03-04 11:24:58 3148 [Note] Server hostname (bind-address): ‘*’; port: 3306

Zakrar,

What has failed?

Log line indicates that someone executed mysqladmin shutdown