Linux系统高负载 MySQL数据库彻底优化（4）

　　#
　　# 2) Set the variables below. However, in case you choose this method, then
　　# start replication for the first time (even unsuccessfully, for example
　　# if you mistyped the password in master-password and the slave fails to
　　# connect), the slave will create a master.info file, and any later
　　# change in this file to the variables'' values below will be ignored and
　　# overridden by the content of the master.info file, unless you shutdown
　　# the slave server, delete master.info and restart the slaver server.
　　# For that reason, you may want to leave the lines below untouched
　　# (commented) and instead use CHANGE MASTER TO (see above)
　　#
　　# required unique id between 2 and 2^32 - 1
　　# (and different from the master)
　　# defaults to 2 if master-host is set
　　# but will not function as a slave if omitted
　　#server-id = 2
　　#
　　# The replication master for this slave - required
　　#master-host =
　　#
　　# The username the slave will use for authentication when connecting
　　# to the master - required
　　#master-user =
　　#
　　# The password the slave will authenticate with when connecting to
　　# the master - required
　　#master-password =
　　#
　　# The port the master is listening on.
　　# optional - defaults to 3306
　　#master-port =
　　#
　　# binary logging - not required for slaves, but recommended
　　#log-bin

　　# Point the following paths to different dedicated disks
　　#tmpdir = /tmp/
　　#log-update = /path-to-dedicated-directory/hostname

　　# Uncomment the following if you are using BDB tables
　　#bdb_cache_size = 4M
　　#bdb_max_lock = 10000

　　# Uncomment the following if you are using InnoDB tables
　　#innodb_data_home_dir = /var/lib/mysql/
　　#innodb_data_file_path = ibdata1:10M:autoextend
　　#innodb_log_group_home_dir = /var/lib/mysql/
　　#innodb_log_arch_dir = /var/lib/mysql/
　　# You can set .._buffer_pool_size up to 50 - 80 %
　　# of RAM but beware of setting memory usage too high
　　#innodb_buffer_pool_size = 16M
　　#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 = 16M

　　[mysql]
　　no-auto-rehash
　　# Remove the next comment character if you are not familiar with SQL
　　#safe-updates

　　[isamchk]
　　key_buffer = 20M
　　sort_buffer_size = 20M
　　read_buffer = 2M
　　write_buffer = 2M

　　[myisamchk]
　　key_buffer = 20M
　　sort_buffer_size = 20M
　　read_buffer = 2M
　　write_buffer = 2M

　　[mysqlhotcopy]
　　interactive-timeout