MySQL配置文件简单解析

[mysqld]
basedir         = /data/mysql
datadir         = /data/mysqldata
tmpdir        = /data/mysqltmpdata　　//mysql的查询临时目录，避免因为磁盘空间不足，造成相关粗偶
port            =
socket          = /data/mysql/mysql.sock
init-connect='SET NAMES utf8'　　//连接的字符集为utf8
character-set-server = utf8　　//系统的默认字符集为utf8
lower_case_table_names  = 

back_log =
max_connections =
max_connect_errors =
expire_logs_days =
max_allowed_packet = 16M
binlog_cache_size = 5M
max_heap_table_size     = 32M
tmp_table_size          = 32M
sort_buffer_size = 8M
join_buffer_size = 8M
ft_min_word_len =
thread_stack = 254K
thread_cache_size =
query_cache_type =
query_cache_size = 

log-bin=master-bin
binlog-format=ROW　　//二进制日志格式为ROW模式
log-error=/var/log/mysqld.log
slow_query_log =
slow-query-log-file = mysql-slow.log
long_query_time = 

server-id =
replicate-ignore-db=test　　//主从复制跳过test库及相关表，以及mysql库及相关表
replicate-wild-ignore-table=test.%
replicate-ignore-db=mysql
replicate-wild-ignore-table=mysql.%
skip-slave-start
log_slave_updates

wait_timeout =
interactive_timeout =
skip-name-resolve=on
skip-external-locking

default-storage-engine = InnoDB
transaction_isolation = REPEATABLE-READ
innodb_buffer_pool_size = 9G    //此处的值大概为系统总内存的70%-80%
innodb_strict_mode =
innodb_file_per_table =
innodb-open-files =
innodb_write_io_threads=
innodb_read_io_threads=
innodb_thread_concurrency =
innodb_io_capacity=
innodb_flush_log_at_trx_commit =
innodb_log_buffer_size = 32M
innodb_log_file_size = 512M
innodb_log_files_in_group =
innodb_adaptive_flushing =
innodb_max_dirty_pages_pct =
innodb_lock_wait_timeout =
innodb_fast_shutdown =
innodb_flush_method  = O_DIRECT
innodb_stats_on_metadata = 

innodb_buffer_pool_instances =
sysdate-is-now
performance_schema
sql_mode=''
auto_increment_offset=　　//自增字段的起始值为1
auto_increment_increment=　　//自增的间距为2

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
default-character-set=utf8
pager=more
no-auto-rehash
socket          = /data/mysql/mysql.sock //添加此处配置为了避免因为单独配置mysql的sock文件，造成无法使用mysql命令直接连接

[myisamchk]
key_buffer = 512M
sort_buffer_size = 512M
read_buffer = 8M
write_buffer = 8M

[mysqlhotcopy]
interactive-timeout

[mysqld_safe]
pid-file=/var/run/mysqld/mysqld.pid
open-files-limit =
user = mysql