若无my.cnf配置文件 直接执行 sudo vim /etc/my.cnf
输入以下内容
# Example MySQL config file
for
medium systems.
#
# This is
for
a system with little memory (32M - 64M) where MySQL plays
# an important part, or systems up to 128M where MySQL is used together with
# other programs (such as a web server)
#
# MySQL programs look
for
option files in a set of
# locations which depend on the deployment platform.
# You can copy
this
option file to one of those
# locations. For information about these locations, see:
# http:
//dev.mysql.com/doc/mysql/en/option-files.html
#
# In
this
file, you can use all
long
options that a program supports.
# If you want to know which options a program supports, run the program
# with the
"--help"
option.
# The following options will be passed to all MySQL clients
[client]
default
-character-set=utf8
#password = your_password
port =
3306
socket = /tmp/mysql.sock
# Here follows entries
for
some specific programs
# The MySQL server
[mysqld]
character-set-server=utf8
init_connect='SET NAMES utf8
port =
3306
socket = /tmp/mysql.sock
skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache =
64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
character-set-server=utf8
sql_mode=
'NO_AUTO_VALUE_ON_ZERO,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,PIPES_AS_CONCAT,ANSI_QUOTES'
init_connect=
'SET NAMES utf8'
# 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
# Replication Master Server (
default
)
# binary logging is required
for
replication
log-bin=mysql-bin
# binary logging format - mixed recommended
binlog_format=mixed
# 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
# Replication Slave (comment out master section to use
this
)
#
# To configure
this
host as a replication slave, you can choose between
# two methods :
#
#
1
) Use the CHANGE MASTER TO command (fully described in our manual) -
# the syntax is:
#
# CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
# where you replace <host>, <user>, <password> by quoted strings and
# <port> by the master's port number (
3306
by
default
).
#
# Example:
#
# CHANGE MASTER TO MASTER_HOST=
'125.564.12.1'
, MASTER_PORT=
3306
,
# MASTER_USER=
'joe'
, MASTER_PASSWORD=
'secret'
;
#
# OR
#
#
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 = <hostname>
#
# The username the slave will use
for
authentication when connecting
# to the master - required
#master-user = <username>
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password = <password>
#
# The port the master is listening on.
# optional - defaults to
3306
#master-port = <port>
#
# binary logging - not required
for
slaves, but recommended
#log-bin=mysql-bin
# Uncomment the following
if
you are using InnoDB tables
#innodb_data_home_dir = /usr/local/mysql/data
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /usr/local/mysql/data
# 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
default
-character-set=utf8
[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout