my.cnf

#MySQL 5.5.8
[client]
port            = 3306
socket          = /opt/mysql/mysql.sock


[mysqld]
port            = 3306
socket          = /opt/mysql/mysql.sock
user=mysql

skip-slave-start
skip-name-resolve

key_buffer_size=2M
read_buffer_size=2M
sort_buffer_size=2M

#5.1.3 table_cache deprecated
table_open_cache=16384

max_allowed_packet = 16M
max_connect_errors = 3000
#net_buffer_length = 8K
#read_rnd_buffer_size = 512K

#default-storage-engine=InnoDB
character-set-server=utf8
collation-server=utf8_bin
init-connect='SET NAMES utf8'

max_connections=4000
binlog_cache_size=2M

query_cache_size = 256M 
query_cache_limit = 2M

thread_cache_size = 100
table_open_cache  = 200

#READ-UNCOMMITTED, READ-COMMITTED, REPEATABLE-READ, SERIALIZABLE
transaction_isolation = REPEATABLE-READ
tmp_table_size=256M

#--------log---------
slow_query_log=1
slow_query_log_file=slow.log
long_query_time = 1
log-error = err.log
#log_slave_updates=1

binlog_format=statement
log-bin=mysql-bin
expire_logs_days = 20
#last intranet ip
server-id = 20654
datadir=/opt/mysql/var
#tmpdir=/dev/shm
#--------innodb--------------
innodb_data_home_dir = /opt/mysql/ibdata
innodb_autoextend_increment = 256
innodb_data_file_path=ibdata1:10M:autoextend
innodb_table_locks = 0
innodb_lock_wait_timeout = 10

#(50-80)% * total memory ( 5G )
innodb_buffer_pool_size=10G 
innodb_additional_mem_pool_size=128M 

innodb_read_io_threads = 8
innodb_write_io_threads = 4

#A recommended value is 2 times the number of CPUs plus the number of disks.
#5.5.8 default 0
#innodb_thread_concurrency = 16
innodb_log_group_home_dir = /opt/mysql/iblogs
innodb_log_files_in_group = 2
innodb_flush_log_at_trx_commit = 0
sync_binlog=15
innodb_support_xa=0
innodb_file_per_table=1


innodb_log_file_size = 1G #25% *buffer pool size (1G)
innodb_log_buffer_size = 48M

relay-log=fb-relay

#suppression of duplicate-key and no-key-found errors
#slave_exec_mode=IDEMPOTENT


[mysqld3306]
port                            = 3306
socket                          = /opt/mysql3306/mysql.sock
pid-file                        = /opt/mysql3306/mysql.pid
datadir                         = /opt/mysql3306/var
innodb_data_home_dir            = /opt/mysql3306/ibdata
innodb_log_group_home_dir       = /opt/mysql3306/iblogs
innodb_buffer_pool_size         = 10G
server-id                       = 3219206

[mysqld3307]
port                            = 3307
socket                          = /opt/mysql3307/mysql.sock
pid-file                        = /opt/mysql3307/mysql.pid
datadir                         = /opt/mysql3307/var
innodb_data_home_dir            = /opt/mysql3307/ibdata
innodb_log_group_home_dir       = /opt/mysql3307/iblogs
innodb_buffer_pool_size         = 10G
server-id                       = 3219207

[mysqld3308]
port                            = 3308
socket                          = /opt/mysql3308/mysql.sock
pid-file                        = /opt/mysql3308/mysql.pid
datadir                         = /opt/mysql3308/var
innodb_data_home_dir            = /opt/mysql3308/ibdata
innodb_log_group_home_dir       = /opt/mysql3308/iblogs
innodb_buffer_pool_size         = 5G
server-id                       = 3219208
read-only                       = 1
binlog-ignore-db                = information_schema
binlog-ignore-db                = mysql

[mysqld3309]
port                            = 3309
socket                          = /opt/mysql3309/mysql.sock
pid-file                        = /opt/mysql3309/mysql.pid
datadir                         = /opt/mysql3309/var
innodb_data_home_dir            = /opt/mysql3309/ibdata
innodb_log_group_home_dir       = /opt/mysql3309/iblogs
innodb_buffer_pool_size         = 2G
server-id                       = 3219209
log-bin=mysql-bin


[mysqld3316]
port                            = 3316
socket                          = /opt/mysql3316/mysql.sock
pid-file                        = /opt/mysql3316/mysql.pid
datadir                         = /opt/mysql3316/var
innodb_data_home_dir            = /opt/mysql3316/ibdata
innodb_log_group_home_dir       = /opt/mysql3316/iblogs
innodb_buffer_pool_size         = 10G
server-id                       = 3219216

[mysqld3317]
port                            = 3317
socket                          = /opt/mysql3317/mysql.sock
pid-file                        = /opt/mysql3317/mysql.pid
datadir                         = /opt/mysql3317/var
innodb_data_home_dir            = /opt/mysql3317/ibdata
innodb_log_group_home_dir       = /opt/mysql3317/iblogs
innodb_buffer_pool_size         = 10G
server-id                       = 3219217

[mysqld3318]
port                            = 3318
socket                          = /opt/mysql3318/mysql.sock
pid-file                        = /opt/mysql3318/mysql.pid
datadir                         = /opt/mysql3318/var
innodb_data_home_dir            = /opt/mysql3318/ibdata
innodb_log_group_home_dir       = /opt/mysql3318/iblogs
innodb_buffer_pool_size         = 5G
server-id                       = 3219218

[mysqld3319]
port                            = 3319
socket                          = /opt/mysql3319/mysql.sock
pid-file                        = /opt/mysql3319/mysql.pid
datadir                         = /opt/mysql3319/var
innodb_data_home_dir            = /opt/mysql3319/ibdata
innodb_log_group_home_dir       = /opt/mysql3319/iblogs
innodb_buffer_pool_size         = 2G
server-id                       = 3219219



[mysql]
no-auto-rehash
[mysqldump]
quick
max_allowed_packet = 16M

[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