Merhaba arkadaşlar sunucumda centos kullanıyorum 2gb rami var. sunucu kendini kapatıyor konuya istinaneden buyrun burdada error logu

160820 21:15:54 mysqld_safe mysqld from pid file /var/run/mariadb/mariadb.pid ended
160820 21:15:54 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
160820 21:15:54 [Note] /usr/libexec/mysqld (mysqld 5.5.50-MariaDB) starting as process 23424 ...
160820 21:15:54 InnoDB: The InnoDB memory heap is disabled
160820 21:15:54 InnoDB: Mutexes and rw_locks use GCC atomic builtins
160820 21:15:54 InnoDB: Compressed tables use zlib 1.2.7
160820 21:15:54 InnoDB: Using Linux native AIO
160820 21:15:54 InnoDB: Initializing buffer pool, size = 128.0M
160820 21:15:54 InnoDB: Completed initialization of buffer pool
160820 21:15:54 InnoDB: highest supported file format is Barracuda.
160820 21:15:54  InnoDB: Waiting for the background threads to start
160820 21:15:55 Percona XtraDB (http://www.percona.com) 5.5.49-MariaDB-37.9 started; log sequence number 163039580
160820 21:15:55 [Note] Plugin 'FEEDBACK' is disabled.
160820 21:15:55 [Note] Server socket created on IP: '0.0.0.0'.
160820 21:15:55 [Note] Event Scheduler: Loaded 0 events
160820 21:15:55 [Note] /usr/libexec/mysqld: ready for connections.
Version: '5.5.50-MariaDB'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MariaDB Server
160820 21:24:33 [ERROR] mysqld: Table './tahminimce/kupon' is marked as crashed and should be repaired
160820 21:24:33 [Warning] Checking table:   './tahminimce/kupon'
160820 21:39:13 [ERROR] mysqld: Table './tahminimce/banko_kupon' is marked as crashed and should be repaired
160820 21:39:13 [Warning] Checking table:   './tahminimce/banko_kupon'
160820 21:39:13 [ERROR] mysqld: Table './tahminimce/uyeler' is marked as crashed and should be repaired
160820 21:39:13 [Warning] Checking table:   './tahminimce/uyeler'
160821  0:38:00 [Warning] IP address '222.186.58.160' could not be resolved: Name or service not known
160821  2:05:31 [Warning] IP address '222.186.34.245' could not be resolved: Name or service not known
160821  3:33:52 [Warning] IP address '124.173.70.120' could not be resolved: Name or service not known
160821  5:14:25 [Warning] IP address '222.187.223.120' could not be resolved: Name or service not known
160821  5:23:22 [Warning] IP address '113.108.21.16' could not be resolved: Name or service not known

error logundan ben pek birşey anlayamadım pek tecrübem olmadıgı için. Bu sorunu nasıl düzelticem şimdiden çok teşekkür ederim