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## MySQL Server Instance Configuration File Template
## ----------------------------------------------------------------------
## Version 1.0.8
##
## <-- Indicates Template comment. These lines will not be in the output
##
## Replaceable things must be like:
##
## # [VARIABLE_NAME]="Formula"
## parameter=default value
##
## For example:
##
## # [PORT]="port"
## port=3306
##
## Note - In the example, the formula consists of a variable named 'port' which must be defined before processing.
##
## In addition to the standard max operators (+, -, /, *), the "formula" field supports the following functions:
##
## rnd(x, y) = Round x to the nearest y
## max(x, y) = Max value from x, y
## min(x, y) = Min value from x, y
##
## and named variables.
##
## For example:
##
## # [MAX_CONNECTIONS]="max_connections:rnd(max(100,max_connections),1000)"
## max_connections=
##
## ( Note - Uninitialized variables have a value of 0. )
##
## Finally, there is a special directive named [STATE_CHANGE] that allows for a function to be exectuted at that
## point during template processing.
##
## For example:
## # [STATE_CHANGE]="new_variable : 1"
##
## The following variables must be defined before the formulas are evaluated (otherwise, you get many values set to 0):
##
## memory - Server Type
## Dedicated Server (90% of System Memory), Server (50% of System Memory), All others( rnd(max( 1/12 System Memory, 40*1024*1024), 1024))
## myiasm_percentage - Table Type
## If main InnoDB, set to 5. Allow userdef.
## active_connections - # Connections.
## DSS = 20, OLTP = 500, else user_defined.
## cpus - Number of CPUS on the machine.
##
# Other default tuning values
##
## innodb_buffer_pool_size_percentage=2/10
# [STATE_CHANGE]="over_commit_factor:10"
##
##
# MySQL Server Instance Configuration File
# ----------------------------------------------------------------------
# Generated by the MySQL Server Instance Configuration Wizard
#
#
# Installation Instructions
# ----------------------------------------------------------------------
#
# On Linux you can copy this file to /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options
# (@localstatedir@ for this installation) or to
# ~/.my.cnf to set user-specific options.
#
# On Windows you should keep this file in the installation directory
# of your server (e.g. C:\Program Files\MySQL\MySQL Server X.Y). To
# make sure the server reads the config file use the startup option
# "--defaults-file".
#
# To run the server from the command line, execute this in a
# command line shell, e.g.
# mysqld --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini"
#
# To install the server as a Windows service manually, execute this in a
# command line shell, e.g.
# mysqld --install MySQLXY --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini"
#
# And then execute this in a command line shell to start the server, e.g.
# net start MySQLXY
#
#
# Guidelines for editing this file
# ----------------------------------------------------------------------
#
# In this file, you can use all long options that the program supports.
# If you want to know the options a program supports, start the program
# with the "--help" option.
#
# More detailed information about the individual options can also be
# found in the manual.
#
#
# CLIENT SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by MySQL client applications.
# Note that only client applications shipped by MySQL are guaranteed
# to read this section. If you want your own MySQL client program to
# honor these values, you need to specify it as an option during the
# MySQL client library initialization.
#
[client]
# [CLIENT_PIPE]=""
# pipe=
# [CLIENT_SOCKET]="socket"
# socket=
# [CLIENT_PORT]="port"
port=3306
[mysql]
no-beep
# [CLIENT_DEFAULT_CHARACTER_SET]=""
# default-character-set=
# SERVER SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by the MySQL Server. Make sure that
# you have installed the server correctly (see above) so it reads this
# file.
#
# [SERVER_TYPE]="server_type"
# server_type=
[mysqld]
# The next three options are mutually exclusive to SERVER_PORT below.
# [SERVER_SKIP]=""
# skip-networking=
# [SERVER_PIPE]=""
# enable-named-pipe=
# The Pipe the MySQL Server will use
# [SERVER_SOCKET]=""
# socket=mysql=
# The TCP/IP Port the MySQL Server will listen on
# [SERVER_PORT]="port"
port=3306
# Path to installation directory. All paths are usually resolved relative to this.
# [BASE_DIR]="basedir"
# basedir=
# Path to the database root
# [DATA_DIR]="datadir"
datadir=
# The default character set that will be used when a new schema or table is
# created and no character set is defined
# [SERVER_DEFAULT_CHARACTER_SET]=""
# character-set-server=
# The default storage engine that will be used when create new tables when
# [DEFAULT_STORAGE_ENGINE]="default_storage_engine"
default-storage-engine=
# Set the SQL mode to strict
# [SQL_MODE]=""
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
# General and Slow logging.
# [LOG_OUT]="log_out"
log-output=
# [GEN_QUERY]="gen_query"
general-log=
# [GEN_QUERY_FILE]="gen_query_file"
general_log_file=
# [SLOW_QUERY]="slow_query"
slow-query-log=
# [SLOW_QUERY_FILE]="slow_query_file"
slow_query_log_file=
# [LONG_QUERY]="long_query_time"
long_query_time=
# Binary Logging.
# [LOG_BIN]="log_bin"
log-bin=
# Error Logging.
# [LOG_ERR]="log_error"
log-error=
# Server Id.
# [SERVER_ID]="server_id"
server-id=
# Indicates how table and database names are stored on disk and used in MySQL.
# Value = 0: Table and database names are stored on disk using the lettercase specified in the
# CREATE TABLE or CREATE DATABASE statement. Name comparisons are case sensitive.
# You should not set this variable to 0 if you are running MySQL on a system that has
# case-insensitive file names (such as Windows or macOS).
# Value = 1: Table names are stored in lowercase on disk and name comparisons are not
# case-sensitive. MySQL converts all table names to lowercase on storage and lookup.
# This behavior also applies to database names and table aliases.
# Value = 3, Table and database names are stored on disk using the lettercase specified in the
# CREATE TABLE or CREATE DATABASE statement, but MySQL converts them to lowercase on
# lookup. Name comparisons are not case sensitive. This works only on file systems
# that are not case-sensitive! InnoDB table names and view names are stored in
# lowercase, as for Value = 1.
# NOTE: lower_case_table_names can only be configured when initializing the server.
# Changing the lower_case_table_names setting after the server is initialized is prohibited.
# [LOWER_CASE_TABLE_NAMES]="lower_case_table_names"
lower_case_table_names=
# Secure File Priv.
# [SECURE_FILE_PRIV]="secure_file_priv"
# secure-file-priv=
# The maximum amount of concurrent sessions the MySQL server will
# allow. One of these connections will be reserved for a user with
# SUPER privileges to allow the administrator to login even if the
# connection limit has been reached.
# [STATE_CHANGE]="max_connections:rnd(min(active_connections*15/10+10,memory/512K),1000)"
# [MAX_CONNECTIONS]="max_connections:rnd(max(100,max_connections),1000)"
max_connections=
# The number of open tables for all threads. Increasing this value
# increases the number of file descriptors that mysqld requires.
# Therefore you have to make sure to set the amount of open files
# allowed to at least 4096 in the variable "open-files-limit" in
# section [mysqld_safe]
# [STATE_CHANGE]="buffers_memory:available_memory*7/10"
# [STATE_CHANGE]="thread_buffers_memory:available_memory*3/10"
# [STATE_CHANGE]="memory_per_thread:thread_buffers_memory*over_commit_factor/max_connections"
# [TABLE_OPEN_CACHE]="table_open_cache:2000"
table_open_cache=
# Maximum size for internal (in-memory) temporary tables. If a table
# grows larger than this value, it is automatically converted to disk
# based table This limitation is for a single table. There can be many
# of them.
# [STATE_CHANGE]="buffers_memory:buffers_memory-table_open_cache*8K"
# [STATE_CHANGE]="big_thread_buffers:memory_per_thread*over_commit_factor"
# [STATE_CHANGE]="tmp_table_size:max(16M,big_thread_buffers)"
# [TMP_TABLE_SIZE]="tmp_table_size:min(tmp_table_size,memory*1/10)","USE_BYTES"
tmp_table_size=
# How many threads we should keep in a cache for reuse. When a client
# disconnects, the client's threads are put in the cache if there aren't
# more than thread_cache_size threads from before. This greatly reduces
# the amount of thread creations needed if you have a lot of new
# connections. (Normally this doesn't give a notable performance
# improvement if you have a good thread implementation.)
# [STATE_CHANGE]="thread_cache_size:max(max_connections*5/100,8)"
# [THREAD_CACHE_SIZE]="thread_cache_size:rnd(min(thread_cache_size,64),1000)"
thread_cache_size=
#*** MyISAM Specific options
# The maximum size of the temporary file MySQL is allowed to use while
# recreating the index (during REPAIR, ALTER TABLE or LOAD DATA INFILE.
# If the file-size would be bigger than this, the index will be created
# through the key cache (which is slower).
myisam_max_sort_file_size=100G
# The size of the buffer that is allocated when sorting MyISAM indexes
# during a REPAIR TABLE or when creating indexes with CREATE INDEX
# or ALTER TABLE.
# [STATE_CHANGE]="myisam_sort_buffer_size:max(8M,big_thread_buffers)"
# [MYISAM_SORT_BUFFER_SIZE]="myisam_sort_buffer_size:min(myisam_sort_buffer_size,memory*2/10)","USE_BYTES"
myisam_sort_buffer_size=
# Size of the Key Buffer, used to cache index blocks for MyISAM tables.
# Do not set it larger than 30% of your available memory, as some memory
# is also required by the OS to cache rows. Even if you're not using
# MyISAM tables, you should still set it to 8-64M as it will also be
# used for internal temporary disk tables.
# [STATE_CHANGE]="myisam_buffers:buffers_memory*(myisam_percentage/100)"
# [KEY_BUFFER_SIZE]="key_buffer_size:max(8M,myisam_buffers/2)","USE_BYTES"
key_buffer_size=
# Size of the buffer used for doing full table scans of MyISAM tables.
# Allocated per thread, if a full scan is needed.
# [STATE_CHANGE]="read_buffer_size:min(64K,memory_per_thread*2/100)"
# [READ_BUFFER_SIZE]="read_buffer_size:min(read_buffer_size,memory/100)","USE_BYTES"
read_buffer_size=
# [STATE_CHANGE]="read_rnd_buffer_size:min(256K,memory_per_thread*4/10)"
# [READ_RND_BUFFER_SIZE]="read_rnd_buffer_size:min(read_rnd_buffer_size,memory*4/100)","USE_BYTES"
read_rnd_buffer_size=
# This buffer is allocated when MySQL needs to rebuild the index in
# REPAIR, OPTIMZE, ALTER table statements as well as in LOAD DATA INFILE
# into an empty table. It is allocated per thread so be careful with
# large settings.
# [STATE_CHANGE]="sort_buffer_size:min(256K,memory_per_thread*3/10)"
# [SORT_BUFFER_SIZE]="sort_buffer_size:min(sort_buffer_size,memory*2/100)","USE_BYTES"
sort_buffer_size=
#*** INNODB Specific options ***
# [INNODB_HOME]=""
# innodb_data_home_dir=
# Use this option if you have a MySQL server with InnoDB support enabled
# but you do not plan to use it. This will save memory and disk space
# and speed up some things.
# [SKIP_INNODB]
# skip-innodb
# If set to 1, InnoDB will flush (fsync) the transaction logs to the
# disk at each commit, which offers full ACID behavior. If you are
# willing to compromise this safety, and you are running small
# transactions, you may set this to 0 or 2 to reduce disk I/O to the
# logs. Value 0 means that the log is only written to the log file and
# the log file flushed to disk approximately once per second. Value 2
# means the log is written to the log file at each commit, but the log
# file is only flushed to disk approximately once per second.
innodb_flush_log_at_trx_commit=1
# The size of the buffer InnoDB uses for buffering log data. As soon as
# it is full, InnoDB will have to flush it to disk. As it is flushed
# once per second anyway, it does not make sense to have it very large
# (even with long transactions).
# [STATE_CHANGE]="innodb_buffers:max(innodb_buffers-innodb_additional_mem_pool_size,0)"
# [STATE_CHANGE]="innodb_log_buffer_size:max(1M,innodb_buffers/100)"
# [INNODB_LOG_BUFFER_SIZE]="innodb_log_buffer_size:min(16M,innodb_log_buffer_size)","USE_BYTES"
innodb_log_buffer_size=
# InnoDB, unlike MyISAM, uses a buffer pool to cache both indexes and
# row data. The bigger you set this the less disk I/O is needed to
# access data in tables. On a dedicated database server you may set this
# parameter up to 80% of the machine physical memory size. Do not set it
# too large, though, because competition of the physical memory may
# cause paging in the operating system. Note that on 32bit systems you
# might be limited to 2-3.5G of user level memory per process, so do not
# set it too high.
# [INNODB_BUFFER_POOL_SIZE]="innodb_buffer_pool_size:max(innodb_buffers-innodb_log_buffer_size,8M)","USE_BYTES"
innodb_buffer_pool_size=
# Size of each log file in a log group. You should set the combined size
# of log files to about 25%-100% of your buffer pool size to avoid
# unneeded buffer pool flush activity on log file overwrite. However,
# note that a larger logfile size will increase the time needed for the
# recovery process.
# [STATE_CHANGE]="innodb_log_file_size:rnd(min(innodb_buffer_pool_size*innodb_buffer_pool_size_percentage,1G),1000)"
# [INNODB_LOG_FILE_SIZE]="innodb_log_file_size:max(10M,innodb_log_file_size)","USE_BYTES"
innodb_log_file_size=
# Number of threads allowed inside the InnoDB kernel. The optimal value
# depends highly on the application, hardware as well as the OS
# scheduler properties. A too high value may lead to thread thrashing.
## originally formula was innodb_thread_concurrency=<<{:M=8,2*([CPUS]+[DISKS])}>>
## but since only one disk will be used in a standard configuration
## [DISKS] is replaced by 1
# [INNODB_THREAD_CONCURRENCY]="innodb_thread_concurrency:max(8,2*cpus+1)"
innodb_thread_concurrency=
# Load mysql plugins at start."plugin_x ; plugin_y".
# [PLUGIN_LOAD]="plugin_load"
plugin_load=