sample mysql config via the percona configuration wizard

percona-wizard-macaroni-mysql.cnf

# Generated by Percona Configuration Wizard (http://tools.percona.com/) version REL5-20120208

[mysql]

# CLIENT #
port                           = 3306
socket                         = /usr/local/mysql/data/mysql.sock

[mysqld]

# GENERAL #
user                           = mysql
default_storage_engine         = InnoDB
socket                         = /usr/local/mysql/data/mysql.sock
pid_file                       = /usr/local/mysql/data/mysql.pid

# MyISAM #
key_buffer_size                = 32M
myisam_recover                 = FORCE,BACKUP

# SAFETY #
max_allowed_packet             = 16M
max_connect_errors             = 1000000

# DATA STORAGE #
datadir                        = /usr/local/mysql/data/

# CACHES AND LIMITS #
tmp_table_size                 = 32M
max_heap_table_size            = 32M
query_cache_type               = 0
query_cache_size               = 0
max_connections                = 100
thread_cache_size              = 16
open_files_limit               = 65535
table_definition_cache         = 4096
table_open_cache               = 300

# INNODB #
innodb_flush_method            = O_DIRECT
innodb_log_files_in_group      = 2
innodb_log_file_size           = 128M
innodb_flush_log_at_trx_commit = 1
innodb_file_per_table          = 1
innodb_buffer_pool_size        = 2G

# LOGGING #
log_error                      = /usr/local/mysql/data/mysql-error.log
log_queries_not_using_indexes  = 1
slow_query_log                 = 1
slow_query_log_file            = /usr/local/mysql/data/mysql-slow.log