也不知道从哪找的，大家凑合着看吧。
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# The following options will be passed to all MySQL clients
[client]
#客户端默认连接字集集,若编译安装时已指定则不用填写
#character-set-server = utf8
#客户端连接通信端口
port = 3306
#客户端通信的用户密码端口等信息保存文件
socket = /opt/mysql/tmp/mysql.sock
default-character-set=utf8
# The MySQL server
[mysqld]
#mysql服务端监听端口
port = 3306
#mysql数据库存放目录
datadir = /opt/mysql/data
socket = /opt/mysql/tmp/mysql.sock
#服务端pid进程文件,若丢失则重启Mysql重新生成,若重启失败,
#则可能由于mysqld进程未杀死,用pkill mysql后则能重启成功Mysql
pid-file =/opt/mysql/data/myDBserver.pid
###防止外部锁定表
skip-external-locking
#禁止Mysqlr的DNS解析,只能通过IP连接数据库
skip-name-resolve
#仅针对Myisam表引擎缓存优化
#key_buffer_size = 384M
#客户端最大查询的sql语句大小
max_allowed_packet = 32M
#服务器最大缓存表数量
table_open_cache = 1024
#每个连接的最大排序内存
sort_buffer_size = 64M
#每个连接使用join查询语句的最大内存
join_buffer_size = 16M
# mysqldump时候会加快速度
net_buffer_length = 1M
read_buffer_size = 2M
read_rnd_buffer_size = 16M
#myisam_sort_buffer_size = 128M
thread_cache_size = 20
#query_cache_size = 256M
#query_cache_limit = 2M
#CPU*2
#thread_concurrency = 4
#SQL语句最大执行时间
#wait_timeout = 120
#允许数据库最大连接数
max_connections = 200
#允许客户端连接数据库出错次数,能防止暴力破解数据库密码
max_connect_errors = 20
#服务器和数据库默认字符集
character-set-server = utf8
#客户端校正字符集
collation-server = utf8_general_ci
init_connect = 'SET NAMES utf8'
#忽略SQL语句大小写
lower_case_table_names= 1
##慢查询日志文件
#log_slow_queries = slowquery.log
###慢查询时间
#long_query_time = 3
###mysql重启自动修复MYisam表
#myisam_recover
###数据同步时不需要同步的数据库名称
#replicate-ignore-db = mysql
#replicate-ignore-db = information_schema
##服务器多个IP时写上比较重要
#bind-address = IP地址
# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#skip-networking
#每一个innodb的表都有一个独立的表空间
innodb_file_per_table = 1
# Replication Master Server (default)
# binary logging is required for replication
log-bin=mysql-bin
# binary logging format - mixed recommended
binlog_format=mixed
# bin_log 文件保存的天数
expire_logs_days = 5
# 设置mysql事务级别
transaction-isolation=READ-COMMITTED
# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id = 1
#Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /usr/local/mysql/var
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /usr/local/mysql/var
#You can set .._buffer_pool_size up to 50 - 80 %
#of RAM but beware of setting memory usage too high
innodb_buffer_pool_size = 256M
#innodb_additional_mem_pool_size = 2M
#Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 5M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
[mysqldump]
quick
max_allowed_packet = 32M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[myisamchk]
key_buffer_size = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
