自5.1.21及以后的变化：
- The following table shows the available servers for Windows in MySQL 5.1.20 and earlier.
| Binary | Description |
| mysqld-nt | Optimized binary with named-pipe support |
| mysqld | Optimized binary without named-pipe support |
| mysqld-debug | Like mysqld-nt, but compiled with full debugging and automatic memory allocation checking |
- The following table shows the available servers for Windows in MySQL 5.1.21 and later.
| Binary | Description |
| mysqld | Optimized binary with named-pipe support |
| mysqld-debug | Like mysqld, but compiled with full debugging and automatic memory allocation checking |
安装方式：
- binary分发：windows的诱人之处
- zip包：不是菜鸟的人乐于使用的方式
- source编译：介于牛A 和 牛C直接的人 使用的方式，高度定制！
版本：
- 严重推荐使用最新的GA（general avialiablity）版，至少是RC(release candidate)版。
- 其实版本选择主要是够用、适用、好用！不一定是最新的。就如mysql被sun并购后生产了几个垃圾的版本！
mysqld服务进程读取的选项文件
- %windir%\my.ini %windir%\my.cnf C:\my.ini C:\my.cnf mysql_basedir\my.ini mysql_basedir\my.cnf
- mysql5.1.x可以识别的选项节：[mysqld] [server] [mysqld-5.1]
mysqld服务进程的运行方式：
- 单独的应用程序模式：直接从命令行运行 mysqld.exe 或者 指定--standalone
- 服务模式：如果是“完全路径的mysqld.exe”，可以通过定义 --defaults-file来指定不同的选项
- 如何创建多个服务：
- mysqld.exe --install 安装默认的【Mysql】服务，读取【标准位置】的选项配置文件的【mqsql】节
- mysqld.exe --install Mysql --defaults-file=fullpathname 安装默认的【Mysql】服务，读取指定的【fullpathname】的选项配置文件的【mqsql】节
- mysqld.exe --install user_name 安装指定名称的【user_name】服务，读取【标准位置】的选项配置文件的【mqsql】节和与指定服务名称的完全相同的【user_name】节
- mysqld.exe --install user_name --defaults-file=fullpathname 安装指定名称的【user_name】服务，读取指定的【fullpathname】的选项配置文件的【mqsql】节
- 控制mysqld服务的几种标准方式
- net start、net stop
- sc start、sc stop
- mysqladmin
- 服务管理器
windows上特有的选项
- --install Install the default service (NT)
- --install-manual Install the default service started manually (NT)
- --install service_name Install an optional service (NT)
- --install-manual service_name Install an optional service started manually (NT)
- --remove Remove the default service from the service list (NT)
- --remove service_name Remove the service_name from the service list (NT)
- --enable-named-pipe Only to be used for the default server (NT)
- --standalone Dummy option to start as a standalone server (NT)
- 不要忘记，这些只是mysql管理windows服务而提供的方式，windows自己就可以很好的管理这些东西
第一选项参数
The following options may be given as the first argument:
- --print-defaults Print the program argument list and exit
- --no-defaults Don't read default options from any options file
- --defaults-file=# Only read default options from the given file #
- --defaults-extra-file=# Read this file after the global files are read
需要注意的选项
--console --将mysqld服务京城的启动、运行诊断信息重定向至屏幕输出，而不是（datadir）下的错误日志文件(.err)
--skip-grant-tables --强制mysqld忽略权限设置启动——既无权限控制——所以用户均是super权限
--debug --跟踪模式，提供更加丰富的内部信息。跟踪文件位于c:\mysqld.trace
非第一选项
- --abort-slave-event-count=# Option used by mysql-test for debugging and testing of replication.
- --allow-suspicious-udfs Allows use of UDFs consisting of only one symbol xxx() without corresponding xxx_init() or xxx_deinit(). That also means that one can oad any function from any library, for example exit() from libc.so
- -a, --ansi Use ANSI SQL syntax instead of MySQL syntax. This mode will also set transaction isolation level 'serializable'.
- --auto-increment-increment[=#] Auto-increment columns are incremented by this
- --auto-increment-offset[=#] Offset added to Auto-increment columns. Used when auto-increment-increment != 1
- --automatic-sp-privileges Creating and dropping stored procedures alters ACLs. Disable with --skip-automatic-sp-privileges.
- --back_log=# The number of outstanding connection requests MySQL can have. This comes into play when the main MySQL thread gets very many connection requests in a very short time.
- -b, --basedir=name Path to installation directory. All paths are usually resolved relative to this.
- --big-tables Allow big result sets by saving all temporary sets on file (Solves most 'table full' errors).
- --bind-address=name IP address to bind to.
- --binlog-do-db=name Tells the master it should log updates for the specified database, and exclude all others not explicitly mentioned.
- --binlog-ignore-db=name Tells the master that updates to the given database should not be logged tothe binary log.
- --binlog-row-event-max-size=# The maximum size of a row-based binary log event in bytes. Rows will be grouped into events smaller than this size if possible. The value has to be a multiple of 256.
- --binlog_cache_size=# The size of the cache to hold the SQL statements for the binary log during a transaction. If you often use big,multi-statement transactions you can increase this to get more performance.
- --binlog_format=name
- Does not have any effect without '--log-bin'. Tell the
- master the form of binary logging to use: either 'row'
- for row-based binary logging, or 'statement' for
- statement-based binary logging, or 'mixed'. 'mixed' is
- statement-based binary logging except for those
- statements where only row-based is correct: those which
- involve user-defined functions (i.e. UDFs) or the UUID()
- function; for those, row-based binary logging is
- automatically used.
- --bootstrap Used by mysql installation scripts.
- --bulk_insert_buffer_size=# Size of tree cache used in bulk insert optimisation. Note that this is a limit per thread!
- --character-set-client-handshake Don't ignore client side character set value sent during handshake.
- --character-set-filesystem=name Set the filesystem character set.
- -C, --character-set-server=name Set the default character set.
- --character-sets-dir=name Directory where character sets are.
- -r, --chroot=name Chroot mysqld daemon during startup.
- --collation-server=name Set the default collation.
- --completion-type=# Default completion type.
- --concurrent-insert[=#] Use concurrent insert with MyISAM. Disable with --concurrent-insert=0
- --connect_timeout=# The number of seconds the mysqld server is waiting for a connect packet before responding with 'Bad handshake'.
- --console Write error output on screen; Don't remove the console window on windows.
- --core-file Write core on errors.
- -h, --datadir=name Path to the database root.
- --datetime_format=name The DATETIME/TIMESTAMP format (for future).
- --date_format=name The DATE format (For future).
- -C, --default-character-set=name Set the default character set (deprecated option, use --character-set-server instead).
- --default-collation=name Set the default collation (deprecated option, use --collation-server instead).
- --default-storage-engine=name Set the default storage engine (table type) for tables.
- --default-table-type=name (deprecated) Use --default-storage-engine.
- --default-time-zone=name Set the default time zone.
- --default_week_format=# The default week format used by WEEK() functions.
- --delay-key-write[=name] Type of DELAY_KEY_WRITE.
- --delay-key-write-for-all-tables Don't flush key buffers between writes for any MyISAM table (Deprecated option, use --delay-key-write=all instead).
- --delayed_insert_limit=# After inserting delayed_insert_limit rows, the INSERT DELAYED handler will check if there are any SELECT statements ending. If so, it allows these to execute before continuing.
- --delayed_insert_timeout=# How long a INSERT DELAYED thread should wait for INSERT statements before terminating.
- --delayed_queue_size=#
- What size queue (in rows) should be allocated for
- handling INSERT DELAYED. If the queue becomes full, any
- client that does INSERT DELAYED will wait until there is
- room in the queue again.
- --des-key-file=name Load keys for des_encrypt() and des_encrypt from given file.
- --disconnect-slave-event-count=# Option used by mysql-test for debugging and testing of replication.
- --div_precision_increment=# Precision of the result of '/' operator will be increased on that value.
- --enable-locking Deprecated option, use --external-locking instead.
- --enable-named-pipe Enable the named pipe (NT).
- --engine-condition-pushdown Push supported query conditions to the storage engine.
- --event-scheduler[=name] Enable/disable the event scheduler.
- -T, --exit-info[=#] Used for debugging; Use at your own risk!
- --expire_logs_days=# If non-zero, binary logs will be purged after expire_logs_days days; possible purges happen at startup and at binary log rotation.
- --external-locking Use system (external) locking (disabled by default). With this option enabled you can run myisamchk to test (not repair) tables while the MySQL server is running. Disable with --skip-external-locking.
- --flush Flush tables to disk between SQL commands.
- --flush_time=# A dedicated thread is created to flush all tables at the given interval.
--ft_boolean_syntax=name
List of operators for MATCH ... AGAINST ( ... IN BOOLEAN
MODE)
--ft_max_word_len=# The maximum length of the word to be included in a
FULLTEXT index. Note: FULLTEXT indexes must be rebuilt
after changing this variable.
--ft_min_word_len=# The minimum length of the word to be included in a
FULLTEXT index. Note: FULLTEXT indexes must be rebuilt
after changing this variable.
--ft_query_expansion_limit=#
Number of best matches to use for query expansion
--ft_stopword_file=name
Use stopwords from this file instead of built-in list.
--gdb Set up signals usable for debugging
--general_log Enable|disable general log
--general_log_file=name
Log connections and queries to given file.
--group_concat_max_len=#
The maximum length of the result of function
group_concat.
-?, --help Display this help and exit.
--ignore-builtin-innodb
Disable initialization of builtin InnoDB plugin
--init-connect=name Command(s) that are executed for each new connection
--init-file=name Read SQL commands from this file at startup.
--init-rpl-role=name
Set the replication role.
--init-slave=name Command(s) that are executed when a slave connects to
this master
--innodb Enable InnoDB plugin. Disable with --skip-innodb (will
save memory).
--innodb-adaptive-hash-index
Enable InnoDB adaptive hash index (enabled by default).
Disable with --skip-innodb-adaptive-hash-index.
--innodb-additional-mem-pool-size=#
Size of a memory pool InnoDB uses to store data
dictionary information and other internal data
structures.
--innodb-autoextend-increment=#
Data file autoextend increment in megabytes
--innodb-autoinc-lock-mode=#
The AUTOINC lock modes supported by InnoDB:
0 => Old style AUTOINC locking (for backward
compatibility)
1 => New style AUTOINC locking
2 => No AUTOINC locking (unsafe for SBR)
--innodb-buffer-pool-size=#
The size of the memory buffer InnoDB uses to cache data
and indexes of its tables.
--innodb-checksums Enable InnoDB checksums validation (enabled by default).
Disable with --skip-innodb-checksums.
--innodb-commit-concurrency=#
Helps in performance tuning in heavily concurrent
environments.
--innodb-concurrency-tickets=#
Number of times a thread is allowed to enter InnoDB
within the same SQL query after it has once got the
ticket
--innodb-data-file-path=name
Path to individual files and their sizes.
--innodb-data-home-dir=name
The common part for InnoDB table spaces.
--innodb-doublewrite
Enable InnoDB doublewrite buffer (enabled by default).
Disable with --skip-innodb-doublewrite.
--innodb-fast-shutdown[=#]
Speeds up the shutdown process of the InnoDB storage
engine. Possible values are 0, 1 (faster) or 2 (fastest -
crash-like).
--innodb-file-io-threads=#
Number of file I/O threads in InnoDB.
--innodb-file-per-table
Stores each InnoDB table to an .ibd file in the database
dir.
--innodb-flush-log-at-trx-commit[=#]
Set to 0 (write and flush once per second), 1 (write and
flush at each commit) or 2 (write at commit, flush once
per second).
--innodb-flush-method=name
With which method to flush data.
--innodb-force-recovery=#
Helps to save your data in case the disk image of the
database becomes corrupt.
--innodb-lock-wait-timeout=#
Timeout in seconds an InnoDB transaction may wait for a
lock before being rolled back.
--innodb-locks-unsafe-for-binlog
Force InnoDB to not use next-key locking, to use only
row-level locking.
--innodb-log-buffer-size=#
The size of the buffer which InnoDB uses to write log to
the log files on disk.
--innodb-log-file-size=#
Size of each log file in a log group.
--innodb-log-files-in-group=#
Number of log files in the log group. InnoDB writes to
the files in a circular fashion. Value 3 is recommended
here.
--innodb-log-group-home-dir=name
Path to InnoDB log files.
--innodb-max-dirty-pages-pct=#
Percentage of dirty pages allowed in bufferpool.
--innodb-max-purge-lag=#
Desired maximum length of the purge queue (0 = no limit)
--innodb-mirrored-log-groups=#
Number of identical copies of log groups we keep for the
database. Currently this should be set to 1.
--innodb-open-files=#
How many files at the maximum InnoDB keeps open at the
same time.
--innodb-rollback-on-timeout
Roll back the complete transaction on lock wait timeout,
for 4.x compatibility (disabled by default)
--innodb-stats-on-metadata
Enable statistics gathering for metadata commands such as
SHOW TABLE STATUS (on by default)
--innodb-status-file
Enable SHOW INNODB STATUS output in the
innodb_status.<pid> file
--innodb-support-xa Enable InnoDB support for the XA two-phase commit
--innodb-sync-spin-loops=#
Count of spin-loop rounds in InnoDB mutexes
--innodb-table-locks
Enable InnoDB locking in LOCK TABLES
--innodb-thread-concurrency=#
Helps in performance tuning in heavily concurrent
environments. Sets the maximum number of threads allowed
inside InnoDB. Value 0 will disable the thread
throttling.
--innodb-thread-sleep-delay=#
Time of innodb thread sleeping before joining InnoDB
queue (usec). Value 0 disable a sleep
--interactive_timeout=#
The number of seconds the server waits for activity on an
interactive connection before closing it.
--join_buffer_size=#
The size of the buffer that is used for full joins.
--keep_files_on_create
Don't overwrite stale .MYD and .MYI even if no directory
is specified.
--key_buffer_size=# The size of the buffer used for index blocks for MyISAM
tables. Increase this to get better index handling (for
all reads and multiple writes) to as much as you can
afford; 64M on a 256M machine that mainly runs MySQL is
quite common.
--key_cache_age_threshold=#
This characterizes the number of hits a hot block has to
be untouched until it is considered aged enough to be
downgraded to a warm block. This specifies the percentage
ratio of that number of hits to the total number of
blocks in key cache
--key_cache_block_size=#
The default size of key cache blocks
--key_cache_division_limit=#
The minimum percentage of warm blocks in key cache
-L, --language=name Client error messages in given language. May be given as
a full path.
--lc-time-names=name
Set the language used for the month names and the days of
the week.
--local-infile Enable/disable LOAD DATA LOCAL INFILE (takes values 1|0).
-l, --log[=name] Log connections and queries to file (deprecated option,
use --general_log/--general_log_file instead).
--log-bin[=name] Log update queries in binary format. Optional (but
strongly recommended to avoid replication problems if
server's hostname changes) argument should be the chosen
location for the binary log files.
--log-bin-index=name
File that holds the names for last binary log files.
--log-bin-trust-function-creators
If equal to 0 (the default), then when --log-bin is used,
creation of a stored function (or trigger) is allowed
only to users having the SUPER privilege and only if this
stored function (trigger) may not break binary
logging.Note that if ALL connections to this server
ALWAYS use row-based binary logging, the security issues
do not exist and the binary logging cannot break, so you
can safely set this to 1.
--log-bin-trust-routine-creators
(deprecated) Use log-bin-trust-function-creators.
--log-error[=name] Error log file.
--log-isam[=name] Log all MyISAM changes to file.
-0, --log-long-format
Log some extra information to update log. Please note
that this option is deprecated; see --log-short-format
option.
--log-output[=name] Syntax: log-output[=value[,value...]], where "value"
could be TABLE, FILE or NONE.
--log-queries-not-using-indexes
Log queries that are executed without benefit of any
index to the slow log if it is open.
--log-short-format Don't log extra information to update and slow-query
logs.
--log-slave-updates Tells the slave to log the updates from the slave thread
to the binary log. You will need to turn it on if you
plan to daisy-chain the slaves.
--log-slow-admin-statements
Log slow OPTIMIZE, ANALYZE, ALTER and other
administrative statements to the slow log if it is open.
--log-slow-slave-statements
Log slow statements executed by slave thread to the slow
log if it is open.
--log-tc=name Path to transaction coordinator log (used for
transactions that affect more than one storage engine,
when binary log is disabled)
--log-tc-size=# Size of transaction coordinator log.
--log-update[=name] The update log is deprecated since version 5.0, is
replaced by the binary log and this option justs turns on
--log-bin instead.
-W, --log-warnings[=#]
Log some not critical warnings to the log file.
--log_slow_queries[=name]
Log slow queries to a table or log file. Defaults logging
to table mysql.slow_log or hostname-slow.log if
--log-output=file is used. Must be enabled to activate
other slow log options. (deprecated option, use
--slow_query_log/--slow_query_log_file instead)
--long_query_time=# Log all queries that have taken more than long_query_time
seconds to execute to file. The argument will be treated
as a decimal value with microsecond precission.
--low-priority-updates
INSERT/DELETE/UPDATE has lower priority than selects.
--lower_case_table_names[=#]
If set to 1 table names are stored in lowercase on disk
and table names will be case-insensitive. Should be set
to 2 if you are using a case insensitive file system
--master-connect-retry=#
The number of seconds the slave thread will sleep before
retrying to connect to the master in case the master goes
down or the connection is lost.
--master-host=name Master hostname or IP address for replication. If not
set, the slave thread will not be started. Note that the
setting of master-host will be ignored if there exists a
valid master.info file.
--master-info-file=name
The location and name of the file that remembers the
master and where the I/O replication thread is in the
master's binlogs.
--master-password=name
The password the slave thread will authenticate with when
connecting to the master. If not set, an empty password
is assumed.The value in master.info will take precedence
if it can be read.
--master-port=# The port the master is listening on. If not set, the
compiled setting of MYSQL_PORT is assumed. If you have
not tinkered with configure options, this should be 3306.
The value in master.info will take precedence if it can
be read.
--master-retry-count=#
The number of tries the slave will make to connect to the
master before giving up.
--master-ssl Enable the slave to connect to the master using SSL.
--master-ssl-ca[=name]
Master SSL CA file. Only applies if you have enabled
master-ssl.
--master-ssl-capath[=name]
Master SSL CA path. Only applies if you have enabled
master-ssl.
--master-ssl-cert[=name]
Master SSL certificate file name. Only applies if you
have enabled master-ssl
--master-ssl-cipher[=name]
Master SSL cipher. Only applies if you have enabled
master-ssl.
--master-ssl-key[=name]
Master SSL keyfile name. Only applies if you have enabled
master-ssl.
--master-user=name The username the slave thread will use for authentication
when connecting to the master. The user must have FILE
privilege. If the master user is not set, user test is
assumed. The value in master.info will take precedence if
it can be read.
--max-binlog-dump-events=#
Option used by mysql-test for debugging and testing of
replication.
--max_allowed_packet=#
Max packetlength to send/receive from to server.
--max_binlog_cache_size=#
Can be used to restrict the total size used to cache a
multi-transaction query.
--max_binlog_size=# Binary log will be rotated automatically when the size
exceeds this value. Will also apply to relay logs if
max_relay_log_size is 0. The minimum value for this
variable is 4096.
--max_connections=# The number of simultaneous clients allowed.
--max_connect_errors=#
If there is more than this number of interrupted
connections from a host this host will be blocked from
further connections.
--max_delayed_threads=#
Don't start more than this number of threads to handle
INSERT DELAYED statements. If set to zero, which means
INSERT DELAYED is not used.
--max_error_count=# Max number of errors/warnings to store for a statement.
--max_heap_table_size=#
Don't allow creation of heap tables bigger than this.
--max_join_size=# Joins that are probably going to read more than
max_join_size records return an error.
--max_length_for_sort_data=#
Max number of bytes in sorted records.
--max_prepared_stmt_count=#
Maximum number of prepared statements in the server.
--max_relay_log_size=#
If non-zero: relay log will be rotated automatically when
the size exceeds this value; if zero (the default): when
the size exceeds max_binlog_size. 0 excepted, the minimum
value for this variable is 4096.
--max_seeks_for_key=#
Limit assumed max number of seeks when looking up rows
based on a key
--max_sort_length=# The number of bytes to use when sorting BLOB or TEXT
values (only the first max_sort_length bytes of each
value are used; the rest are ignored).
--max_sp_recursion_depth[=#]
Maximum stored procedure recursion depth. (discussed with
docs).
--max_tmp_tables=# Maximum number of temporary tables a client can keep open
at a time.
--max_user_connections=#
The maximum number of active connections for a single
user (0 = no limit).
--max_write_lock_count=#
After this many write locks, allow some read locks to run
in between.
--memlock Lock mysqld in memory.
--min_examined_row_limit=#
Don't log queries which examine less than
min_examined_row_limit rows to file.
--multi_range_count=#
Number of key ranges to request at once.
--myisam-recover[=name]
Syntax: myisam-recover[=option[,option...]], where option
can be DEFAULT, BACKUP, FORCE or QUICK.
--myisam_block_size=#
Block size to be used for MyISAM index pages.
--myisam_data_pointer_size=#
Default pointer size to be used for MyISAM tables.
--myisam_max_extra_sort_file_size=#
Deprecated option
--myisam_max_sort_file_size=#
Don't use the fast sort index method to created index if
the temporary file would get bigger than this.
--myisam_repair_threads=#
Number of threads to use when repairing MyISAM tables.
The value of 1 disables parallel repair.
--myisam_sort_buffer_size=#
The buffer that is allocated when sorting the index when
doing a REPAIR or when creating indexes with CREATE INDEX
or ALTER TABLE.
--myisam_stats_method=name
Specifies how MyISAM index statistics collection code
should threat NULLs. Possible values of name are
"nulls_unequal" (default behavior for 4.1/5.0),
"nulls_equal" (emulate 4.0 behavior), and
"nulls_ignored".
--myisam_use_mmap Use memory mapping for reading and writing MyISAM tables
--ndb-use-copying-alter-table
Force ndbcluster to always copy tables at alter table
(should only be used if on-line alter table fails).
--net_buffer_length=#
Buffer length for TCP/IP and socket communication.
--net_read_timeout=#
Number of seconds to wait for more data from a connection
before aborting the read.
--net_retry_count=# If a read on a communication port is interrupted, retry
this many times before giving up.
--net_write_timeout=#
Number of seconds to wait for a block to be written to a
connection before aborting the write.
-n, --new Use very new possible 'unsafe' functions.
--old Use compatible behavior.
--old-alter-table Use old, non-optimized alter table.
--old-passwords Use old password encryption method (needed for 4.0 and
older clients).
--old-style-user-limits
Enable old-style user limits (before 5.0.3 user resources
were counted per each user+host vs. per account)
--one-thread (deprecated): Only use one thread (for debugging under
Linux). Use thread-handling=no-threads instead
--open_files_limit=#
If this is not 0, then mysqld will use this value to
reserve file descriptors to use with setrlimit(). If this
value is 0 then mysqld will reserve max_connections*5 or
max_connections + table_cache*2 (whichever is larger)
number of files.
--optimizer_prune_level[=#]
Controls the heuristic(s) applied during query
optimization to prune less-promising partial plans from
the optimizer search space. Meaning: 0 - do not apply any
heuristic, thus perform exhaustive search; 1 - prune
plans based on number of retrieved rows.
--optimizer_search_depth[=#]
Maximum depth of search performed by the query optimizer.
Values larger than the number of relations in a query
result in better query plans, but take longer to compile
a query. Smaller values than the number of tables in a
relation result in faster optimization, but may produce
very bad query plans. If set to 0, the system will
automatically pick a reasonable value; if set to
MAX_TABLES+2, the optimizer will switch to the original
find_best (used for testing/comparison).
--optimizer_switch=name
optimizer_switch=option=val[,option=val...], where
option={index_merge, index_merge_union,
index_merge_sort_union, index_merge_intersection} and
val={on, off, default}.
--pid-file=name Pid file used by safe_mysqld.
--plugin-load=name Optional colon-separated list of plugins to load, where
each plugin is identified as name=library, where name is
the plugin name and library is the plugin library in
plugin_dir.
--plugin_dir=name Directory for plugins.
-P, --port=# Port number to use for connection or 0 for default to, in
order of preference, my.cnf, $MYSQL_TCP_PORT,
/etc/services, built-in default (3306).
--port-open-timeout=#
Maximum time in seconds to wait for the port to become
free. (Default: no wait)
--preload_buffer_size=#
The size of the buffer that is allocated when preloading
indexes
--profiling_history_size=#
Limit of query profiling memory
--query_alloc_block_size=#
Allocation block size for query parsing and execution
--query_cache_limit=#
Don't cache results that are bigger than this.
--query_cache_min_res_unit=#
minimal size of unit in wich space for results is
allocated (last unit will be trimed after writing all
result data.
--query_cache_size=#
The memory allocated to store results from old queries.
--query_cache_type=#
0 = OFF = Don't cache or retrieve results. 1 = ON = Cache
all results except SELECT SQL_NO_CACHE ... queries. 2 =
DEMAND = Cache only SELECT SQL_CACHE ... queries.
--query_cache_wlock_invalidate
Invalidate queries in query cache on LOCK for write
--query_prealloc_size=#
Persistent buffer for query parsing and execution
--range_alloc_block_size=#
Allocation block size for storing ranges during
optimization
--read_buffer_size=#
Each thread that does a sequential scan allocates a
buffer of this size for each table it scans. If you do
many sequential scans, you may want to increase this
value.
--read_only Make all non-temporary tables read-only, with the
exception for replication (slave) threads and users with
the SUPER privilege
--read_rnd_buffer_size=#
When reading rows in sorted order after a sort, the rows
are read through this buffer to avoid a disk seeks. If
not set, then it's set to the value of record_buffer.
--record_buffer=# Alias for read_buffer_size
--relay-log=name The location and name to use for relay logs.
--relay-log-index=name
The location and name to use for the file that keeps a
list of the last relay logs.
--relay-log-info-file=name
The location and name of the file that remembers where
the SQL replication thread is in the relay logs.
--relay_log_purge 0 = do not purge relay logs. 1 = purge them as soon as
they are no more needed.
--relay_log_space_limit=#
Maximum space to use for all relay logs.
--replicate-do-db=name
Tells the slave thread to restrict replication to the
specified database. To specify more than one database,
use the directive multiple times, once for each database.
Note that this will only work if you do not use
cross-database queries such as UPDATE some_db.some_table
SET foo='bar' while having selected a different or no
database. If you need cross database updates to work,
make sure you have 3.23.28 or later, and use
replicate-wild-do-table=db_name.%.
--replicate-do-table=name
Tells the slave thread to restrict replication to the
specified table. To specify more than one table, use the
directive multiple times, once for each table. This will
work for cross-database updates, in contrast to
replicate-do-db.
--replicate-ignore-db=name
Tells the slave thread to not replicate to the specified
database. To specify more than one database to ignore,
use the directive multiple times, once for each database.
This option will not work if you use cross database
updates. If you need cross database updates to work, make
sure you have 3.23.28 or later, and use
replicate-wild-ignore-table=db_name.%.
--replicate-ignore-table=name
Tells the slave thread to not replicate to the specified
table. To specify more than one table to ignore, use the
directive multiple times, once for each table. This will
work for cross-datbase updates, in contrast to
replicate-ignore-db.
--replicate-rewrite-db=name
Updates to a database with a different name than the
original. Example:
replicate-rewrite-db=master_db_name->slave_db_name.
--replicate-same-server-id
In replication, if set to 1, do not skip events having
our server id. Default value is 0 (to break infinite
loops in circular replication). Can't be set to 1 if
--log-slave-updates is used.
--replicate-wild-do-table=name
Tells the slave thread to restrict replication to the
tables that match the specified wildcard pattern. To
specify more than one table, use the directive multiple
times, once for each table. This will work for
cross-database updates. Example:
replicate-wild-do-table=foo%.bar% will replicate only
updates to tables in all databases that start with foo
and whose table names start with bar.
--replicate-wild-ignore-table=name
Tells the slave thread to not replicate to the tables
that match the given wildcard pattern. To specify more
than one table to ignore, use the directive multiple
times, once for each table. This will work for
cross-database updates. Example:
replicate-wild-ignore-table=foo%.bar% will not do updates
to tables in databases that start with foo and whose
table names start with bar.
--report-host=name Hostname or IP of the slave to be reported to to the
master during slave registration. Will appear in the
output of SHOW SLAVE HOSTS. Leave unset if you do not
want the slave to register itself with the master. Note
that it is not sufficient for the master to simply read
the IP of the slave off the socket once the slave
connects. Due to NAT and other routing issues, that IP
may not be valid for connecting to the slave from the
master or other hosts.
--report-password=name
Undocumented.
--report-port=# Port for connecting to slave reported to the master
during slave registration. Set it only if the slave is
listening on a non-default port or if you have a special
tunnel from the master or other clients to the slave. If
not sure, leave this option unset.
--report-user=name Undocumented.
--rpl-recovery-rank=#
Undocumented.
--safe-mode Skip some optimize stages (for testing).
--safe-show-database
Deprecated option; use GRANT SHOW DATABASES instead...
--safe-user-create Don't allow new user creation by the user who has no
write privileges to the mysql.user table.
--safemalloc-mem-limit=#
Simulate memory shortage when compiled with the
--with-debug=full option.
--secure-auth Disallow authentication for accounts that have old
(pre-4.1) passwords.
--secure-file-priv=name
Limit LOAD DATA, SELECT ... OUTFILE, and LOAD_FILE() to
files within specified directory
--server-id=# Uniquely identifies the server instance in the community
of replication partners.
-O, --set-variable=name
Change the value of a variable. Please note that this
option is deprecated;you can set variables directly with
--variable-name=value.
--shared-memory Enable the shared memory.
--shared-memory-base-name=name
Base name of shared memory.
--show-slave-auth-info
Show user and password in SHOW SLAVE HOSTS on this master
--skip-grant-tables Start without grant tables. This gives all users FULL
ACCESS to all tables!
--skip-host-cache Don't cache host names.
--skip-locking Deprecated option, use --skip-external-locking instead.
--skip-name-resolve Don't resolve hostnames. All hostnames are IP's or
'localhost'.
--skip-networking Don't allow connection with TCP/IP.
--skip-new Don't use new, possible wrong routines.
--skip-show-database
Don't allow 'SHOW DATABASE' commands.
--skip-slave-start If set, slave is not autostarted.
--skip-stack-trace Don't print a stack trace on failure.
--skip-symlink Don't allow symlinking of tables. Deprecated option. Use
--skip-symbolic-links instead.
--skip-thread-priority
Don't give threads different priorities. Deprecated
option.
--slave-exec-mode=name
Modes for how replication events should be executed.
Legal values are STRICT (default) and IDEMPOTENT. In
IDEMPOTENT mode, replication will not stop for operations
that are idempotent. In STRICT mode, replication will
stop on any unexpected difference between the master and
the slave.
--slave-load-tmpdir=name
The location where the slave should put its temporary
files when replicating a LOAD DATA INFILE command.
--slave-skip-errors=name
Tells the slave thread to continue replication when a
query event returns an error from the provided list.
--slave_compressed_protocol
Use compression on master/slave protocol.
--slave_net_timeout=#
Number of seconds to wait for more data from a
master/slave connection before aborting the read.
--slave_transaction_retries=#
Number of times the slave SQL thread will retry a
transaction in case it failed with a deadlock or elapsed
lock wait timeout, before giving up and stopping.
--slow-query-log Enable|disable slow query log
--slow_launch_time=#
If creating the thread takes longer than this value (in
seconds), the Slow_launch_threads counter will be
incremented.
--slow_query_log_file=name
Log slow queries to given log file. Defaults logging to
hostname-slow.log. Must be enabled to activate other slow
log options.
--socket=name Socket file to use for connection.
--sort_buffer_size=#
Each thread that needs to do a sort allocates a buffer of
this size.
--sporadic-binlog-dump-fail
Option used by mysql-test for debugging and testing of
replication.
--sql-bin-update-same=#
The update log is deprecated since version 5.0, is
replaced by the binary log and this option does nothing
anymore.
--sql-mode=name Syntax: sql-mode=option[,option[,option...]] where option
can be one of: REAL_AS_FLOAT, PIPES_AS_CONCAT,
ANSI_QUOTES, IGNORE_SPACE, ONLY_FULL_GROUP_BY,
NO_UNSIGNED_SUBTRACTION.
--ssl Enable SSL for connection (automatically enabled with
other flags). Disable with --skip-ssl.
--ssl-ca=name CA file in PEM format (check OpenSSL docs, implies
--ssl).
--ssl-capath=name CA directory (check OpenSSL docs, implies --ssl).
--ssl-cert=name X509 cert in PEM format (implies --ssl).
--ssl-cipher=name SSL cipher to use (implies --ssl).
--ssl-key=name X509 key in PEM format (implies --ssl).
--standalone Dummy option to start as a standalone program (NT).
-s, --symbolic-links
Enable symbolic link support.
--sync-binlog=# Synchronously flush binary log to disk after every #th
event. Use 0 (default) to disable synchronous flushing.
--sync-frm Sync .frm to disk on create. Enabled by default.
--sysdate-is-now Non-default option to alias SYSDATE() to NOW() to make it
safe-replicable. Since 5.0, SYSDATE() returns a `dynamic'
value different for different invocations, even within
the same statement.
--table_cache=# Deprecated; use --table_open_cache instead.
--table_definition_cache=#
The number of cached table definitions.
--table_lock_wait_timeout=#
Timeout in seconds to wait for a table level lock before
returning an error. Used only if the connection has
active cursors.
--table_open_cache=#
The number of cached open tables.
--tc-heuristic-recover=name
Decision to use in heuristic recover process. Possible
values are COMMIT or ROLLBACK.
--temp-pool This option is ignored on this OS.
--thread_cache_size=#
How many threads we should keep in a cache for reuse.
--thread_concurrency=#
Permits the application to give the threads system a hint
for the desired number of threads that should be run at
the same time.
--thread_handling=name
Define threads usage for handling queries:
one-thread-per-connection or no-threads
--thread_stack=# The stack size for each thread.
--timed_mutexes Specify whether to time mutexes (only InnoDB mutexes are
currently supported)
--time_format=name The TIME format (for future).
-t, --tmpdir=name Path for temporary files. Several paths may be specified,
separated by a semicolon (;), in this case they are used
in a round-robin fashion.
--tmp_table_size=# If an internal in-memory temporary table exceeds this
size, MySQL will automatically convert it to an on-disk
MyISAM table.
--transaction-isolation=name
Default transaction isolation level.
--transaction_alloc_block_size=#
Allocation block size for transactions to be stored in
binary log
--transaction_prealloc_size=#
Persistent buffer for transactions to be stored in binary
log
--updatable_views_with_limit=#
1 = YES = Don't issue an error message (warning only) if
a VIEW without presence of a key of the underlying table
is used in queries with a LIMIT clause for updating. 0 =
NO = Prohibit update of a VIEW, which does not contain a
key of the underlying table and the query uses a LIMIT
clause (usually get from GUI tools).
-s, --use-symbolic-links
Enable symbolic link support. Deprecated option; use
--symbolic-links instead.
-u, --user=name Run mysqld daemon as user.
-v, --verbose Used with --help option for detailed help
-V, --version Output version information and exit.
--wait_timeout=# The number of seconds the server waits for activity on a
connection before closing it.
-W, --warnings[=#] Deprecated; use --log-warnings instead.