J'ai vraiment besoin d'une expertise mysql. Je suis un newbi de mysql et je vois un crash de serveur de ma base de données au cours de la dernière semaine.
J'utilise mysql 5.1.36 sur Ubuntu. Il s'agit d'un serveur mysql dédié avec Dual core et 4 Go de mémoire et 40 Go SSD.
Les erreurs de journalisation sont:
120413 23:57:15 [Note] Plugin 'FEDERATED' is disabled.
120413 23:57:15 [Warning] option 'innodb-autoextend-increment': unsigned value 2000 adjusted to 1000
120413 23:57:15 InnoDB: Initializing buffer pool, size = 2.9G
120413 23:57:15 InnoDB: Completed initialization of buffer pool
120413 23:57:16 InnoDB: Started; log sequence number 0 44234
120413 23:57:16 [Note] Event Scheduler: Loaded 0 events
120413 23:57:16 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.1.58-1ubuntu1-log' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Ubuntu)
120414 0:00:25 [Warning] Neither --relay-log nor --relay-log-index were used; so replication may break when this MySQL server acts as a slave and has his hostname changed!! Please use '--relay-log=e2-relay-bin' to avoid this problem.
120414 0:00:25 [Note] 'CHANGE MASTER TO executed'. Previous state master_host='', master_port='3306', master_log_file='', master_log_pos='4'. New state master_host='', master_port='3306', master_log_file='mysql-bin.000043', master_log_pos='87039427'.
120414 0:58:37 [Note] 'CHANGE MASTER TO executed'. Previous state master_host='', master_port='3306', master_log_file='mysql-bin.000043', master_log_pos='87039427'. New state master_host='', master_port='3306', master_log_file='mysql-bin.000043', master_log_pos='87846901'.
120414 2:20:34 InnoDB: ERROR: the age of the last checkpoint is 241588252,
InnoDB: which exceeds the log group capacity 241588224.
InnoDB: If you are using big BLOB or TEXT rows, you must set the
InnoDB: combined size of log files at least 10 times bigger than the
InnoDB: largest such row.
My.cnf est comme ci-dessous.
default-storage-engine=innodb
default-table-type=innodb
key_buffer = 384M
max_allowed_packet = 64M
thread_stack = 256K
thread_cache_size = 16
max_heap_table_size = 64M
myisam_sort_buffer_size = 64M
join_buffer_size = 8M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
sort_buffer_size = 3M
tmp_table_size = 64M
# Innodb changes
innodb_additional_mem_pool_size = 16M
innodb_autoextend_increment = 2000
innodb_buffer_pool_size = 3000M #As current Db is around 1.2G.
innodb_file_per_table
innodb_data_file_path = ibdata1:512M;ibdata2:512M:autoextend
innodb_flush_log_at_trx_commit = 2 #For more reliablity use 1
innodb_flush_method = O_DIRECT
innodb_log_buffer_size = 8M
innodb_log_file_size = 128M #Transaction Log up to 1/4 Buffer Pool
innodb_thread_concurrency = 16
#innodb_force_recovery = 2
#innodb_read_io_threads = 8
#innodb_write_io_threads = 8
innodb_lock_wait_timeout = 50
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover = BACKUP
max_connections = 400
table_cache = 1024M
thread_concurrency = 16
Toutes les suggestions que je peux changer.