mysql5.6配置文件详解（一）

mysqld  Ver 5.6.11 for Linux on x86_64 (Source distribution)
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Starts the MySQL database server.

Usage: mysqld [OPTIONS]

Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /usr/local/mysql/etc/my.cnf ~/.my.cnf 
The following groups are read: mysqld server mysqld-5.6
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 option file,
                       except for login file.
--defaults-file=#       Only read default options from the given file #.
--defaults-extra-file=# Read this file after the global files are read.
--defaults-group-suffix=#
                       Also read groups with concat(group, suffix)
--login-path=#          Read this path from the login file.

--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 load 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'.
 --archive[=name]    Enable or disable ARCHIVE plugin. Possible values are ON,
                     OFF, FORCE (don't start if the plugin fails to load).
 --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
 --autocommit        Set default value for autocommit (0 or 1)
                     (Defaults to on; use --skip-autocommit to disable.)
 --automatic-sp-privileges 
                     Creating and dropping stored procedures alters ACLs
                     (Defaults to on; use --skip-automatic-sp-privileges to disable.)
 --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-cache-size=# 
                     The size of the transactional cache for updates to
                     transactional engines for the binary log. If you often
                     use transactions containing many statements, you can
                     increase this to get more performance
 --binlog-checksum=name 
                     Type of BINLOG_CHECKSUM_ALG. Include checksum for log
                     events in the binary log. Possible values are NONE and
                     CRC32; default is CRC32.
 --binlog-direct-non-transactional-updates 
                     Causes updates to non-transactional engines using
                     statement format to be written directly to binary log.
                     Before using this option make sure that there are no
                     dependencies between transactional and non-transactional
                     tables such as in the statement INSERT INTO t_myisam
                     SELECT * FROM t_innodb; otherwise, slaves may diverge
                     from the master.
 --binlog-do-db=name Tells the master it should log updates for the specified
                     database, and exclude all others not explicitly
                     mentioned.
 --binlog-format=name 
                     What form of binary logging the master will use: either
                     ROW for row-based binary logging, 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. If NDBCLUSTER is enabled and
                     binlog-format is MIXED, the format switches to row-based
                     and back implicitly per each query accessing an
                     NDBCLUSTER table
 --binlog-ignore-db=name 
                     Tells the master that updates to the given database
                     should not be logged to the binary log.
 --binlog-max-flush-queue-time=# 
                     The maximum time that the binary log group commit will
                     keep reading transactions before it flush the
                     transactions to the binary log (and optionally sync,
                     depending on the value of sync_binlog).
 --binlog-order-commits 
                     Issue internal commit calls in the same order as
                     transactions are written to the binary log. Default is to
                     order commits.
                     (Defaults to on; use --skip-binlog-order-commits to disable.)
 --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-row-image=name 
                     Controls whether rows should be logged in 'FULL',
                     'NOBLOB' or 'MINIMAL' formats. 'FULL', means that all
                     columns in the before and after image are logged.
                     'NOBLOB', means that mysqld avoids logging blob columns
                     whenever possible (eg, blob column was not changed or is
                     not part of primary key). 'MINIMAL', means that a PK
                     equivalent (PK columns or full row if there is no PK in
                     the table) is logged in the before image, and only
                     changed columns are logged in the after image. (Default:
                     FULL).
 --binlog-rows-query-log-events 
                     Allow writing of Rows_query_log events into binary log.
 --binlog-stmt-cache-size=# 
                     The size of the statement cache for updates to
                     non-transactional engines for the binary log. If you
                     often use statements updating a great number of rows, you
                     can increase this to get more performance
 --blackhole[=name]  Enable or disable BLACKHOLE plugin. Possible values are
                     ON, OFF, FORCE (don't start if the plugin fails to load).
 --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.
                     (Defaults to on; use --skip-character-set-client-handshake to disable.)
 --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=name 
                     The transaction completion type, one of NO_CHAIN, CHAIN,
                     RELEASE
 --concurrent-insert[=name] 
                     Use concurrent insert with MyISAM. Possible values are
                     NEVER, AUTO, ALWAYS
 --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 directory
 --date-format=name  The DATE format (ignored)
 --datetime-format=name 
                     The DATETIME format (ignored)
 --default-authentication-plugin=name 
                     Defines what password- and authentication algorithm to
                     use per default
 --default-storage-engine=name 
                     The default storage engine for new tables
 --default-time-zone=name 
                     Set the default time zone.
 --default-tmp-storage-engine=name 
                     The default storage engine for new explict temporary
                     tables
 --default-week-format=# 
                     The default week format used by WEEK() functions
 --delay-key-write[=name] 
                     Type of DELAY_KEY_WRITE
 --delayed-insert-limit=# 
                     After inserting delayed_insert_limit rows, the INSERT
                     DELAYED handler will check if there are any SELECT
                     statements pending. If so, it allows these to execute
                     before continuing. This variable is deprecated along with
                     INSERT DELAYED.
 --delayed-insert-timeout=# 
                     How long a INSERT DELAYED thread should wait for INSERT
                     statements before terminating.This variable is deprecated
                     along with INSERT DELAYED.
 --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.This variable is deprecated along
                     with INSERT DELAYED.
 --des-key-file=name Load keys for des_encrypt() and des_encrypt from given
                     file.
 --disconnect-on-expired-password 
                     Give clients that don't signal password expiration
                     support execution time error(s) instead of connection
                     error
                     (Defaults to on; use --skip-disconnect-on-expired-password to disable.)
 --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
 --end-markers-in-json 
                     In JSON output ("EXPLAIN FORMAT=JSON" and optimizer
                     trace), if variable is set to 1, repeats the structure's
                     key (if it has one) near the closing bracket
 --enforce-gtid-consistency 
                     Prevents execution of statements that would be impossible
                     to log in a transactionally safe manner. Currently, the
                     disallowed statements include CREATE TEMPORARY TABLE
                     inside transactions, all updates to non-transactional
                     tables, and CREATE TABLE ... SELECT.
 --eq-range-index-dive-limit=# 
                     The optimizer will use existing index statistics instead
                     of doing index dives for equality ranges if the number of
                     equality ranges for the index is larger than or equal to
                     this number. If set to 0, index dives are always used.
 --event-scheduler[=name] 
                     Enable the event scheduler. Possible values are ON, OFF,
                     and DISABLED (keep the event scheduler completely
                     deactivated, it cannot be activated run-time)
 -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
 --explicit-defaults-for-timestamp 
                     This option causes CREATE TABLE to create all TIMESTAMP
                     columns as NULL with DEFAULT NULL attribute, Without this
                     option, TIMESTAMP columns are NOT NULL and have implicit
                     DEFAULT clauses. The old behavior is deprecated.
 --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.
 --federated[=name]  Enable or disable FEDERATED plugin. Possible values are
                     ON, OFF, FORCE (don't start if the plugin fails to load).
 --flush             Flush MyISAM 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       Log connections and queries to a table or log file.
                     Defaults logging to a file hostname.log or a table
                     mysql.general_logif --log-output=TABLE is used
 --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()
 --gtid-mode=name    Whether Global Transaction Identifiers (GTIDs) are
                     enabled. Can be ON or OFF.
 -?, --help          Display this help and exit.
 --host-cache-size=# How many host names should be cached to avoid resolving.
 --ignore-builtin-innodb 
                     IGNORED. This option will be removed in future releases.
                     Disable initialization of builtin InnoDB plugin
 --ignore-db-dir=name 
                     Specifies a directory to add to the ignore list when
                     collecting database names from the datadir. Put a blank
                     argument to reset the list accumulated so far.
 --init-connect=name Command(s) that are executed for each new connection
 --init-file=name    Read SQL commands from this file at startup
 --init-slave=name   Command(s) that are executed by a slave server each time
                     the SQL thread starts
 --innodb[=name]     Enable or disable InnoDB plugin. Possible values are ON,
                     OFF, FORCE (don't start if the plugin fails to load).
 --innodb-adaptive-flushing 
                     Attempt flushing dirty pages to avoid IO bursts at
                     checkpoints.
                     (Defaults to on; use --skip-innodb-adaptive-flushing to disable.)
 --innodb-adaptive-flushing-lwm=# 
                     Percentage of log capacity below which no adaptive
                     flushing happens.
 --innodb-adaptive-hash-index 
                     Enable InnoDB adaptive hash index (enabled by default). 
                     Disable with --skip-innodb-adaptive-hash-index.
                     (Defaults to on; use --skip-innodb-adaptive-hash-index to disable.)
 --innodb-adaptive-max-sleep-delay=# 
                     The upper limit of the sleep delay in usec. Value of 0
                     disables it.
 --innodb-additional-mem-pool-size=# 
                     DEPRECATED. This option may be removed in future
                     releases, together with the option innodb_use_sys_malloc
                     and with the InnoDB's internal memory allocator. Size of
                     a memory pool InnoDB uses to store data dictionary
                     information and other internal data structures.
 --innodb-api-bk-commit-interval[=#] 
                     Background commit interval in seconds
 --innodb-api-disable-rowlock 
                     Disable row lock when direct access InnoDB through InnoDB
                     APIs
 --innodb-api-enable-binlog 
                     Enable binlog for applications direct access InnoDB
                     through InnoDB APIs
 --innodb-api-enable-mdl 
                     Enable MDL for applications direct access InnoDB through
                     InnoDB APIs
 --innodb-api-trx-level[=#] 
                     InnoDB API transaction isolation level
 --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-page[=name] 
                     Enable or disable INNODB_BUFFER_PAGE plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-buffer-page-lru[=name] 
                     Enable or disable INNODB_BUFFER_PAGE_LRU plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-buffer-pool-dump-at-shutdown 
                     Dump the buffer pool into a file named
                     @@innodb_buffer_pool_filename
 --innodb-buffer-pool-dump-now 
                     Trigger an immediate dump of the buffer pool into a file
                     named @@innodb_buffer_pool_filename
 --innodb-buffer-pool-filename=name 
                     Filename to/from which to dump/load the InnoDB buffer
                     pool
 --innodb-buffer-pool-instances=# 
                     Number of buffer pool instances, set to higher value on
                     high-end machines to increase scalability
 --innodb-buffer-pool-load-abort 
                     Abort a currently running load of the buffer pool
 --innodb-buffer-pool-load-at-startup 
                     Load the buffer pool from a file named
                     @@innodb_buffer_pool_filename
 --innodb-buffer-pool-load-now 
                     Trigger an immediate load of the buffer pool from a file
                     named @@innodb_buffer_pool_filename
 --innodb-buffer-pool-size=# 
                     The size of the memory buffer InnoDB uses to cache data
                     and indexes of its tables.
 --innodb-buffer-pool-stats[=name] 
                     Enable or disable INNODB_BUFFER_POOL_STATS plugin.
                     Possible values are ON, OFF, FORCE (don't start if the
                     plugin fails to load).
 --innodb-change-buffer-max-size=# 
                     Maximum on-disk size of change buffer in terms of
                     percentage of the buffer pool.
 --innodb-change-buffering=name 
                     Buffer changes to reduce random access: OFF, ON,
                     inserting, deleting, changing, or purging.
 --innodb-checksum-algorithm=name 
                     The algorithm InnoDB uses for page checksumming. Possible
                     values are CRC32 (hardware accelerated if the CPU
                     supports it) write crc32, allow any of the other
                     checksums to match when reading; STRICT_CRC32 write
                     crc32, do not allow other algorithms to match when
                     reading; INNODB write a software calculated checksum,
                     allow any other checksums to match when reading;
                     STRICT_INNODB write a software calculated checksum, do
                     not allow other algorithms to match when reading; NONE
                     write a constant magic number, do not do any checksum
                     verification when reading (same as innodb_checksums=OFF);
                     STRICT_NONE write a constant magic number, do not allow
                     values other than that magic number when reading; Files
                     updated when this option is set to crc32 or strict_crc32
                     will not be readable by MySQL versions older than 5.6.3
 --innodb-checksums  DEPRECATED. Use innodb_checksum_algorithm=NONE instead of
                     setting this to OFF. Enable InnoDB checksums validation
                     (enabled by default). Disable with
                     --skip-innodb-checksums.
                     (Defaults to on; use --skip-innodb-checksums to disable.)
 --innodb-cmp[=name] Enable or disable INNODB_CMP plugin. Possible values are
                     ON, OFF, FORCE (don't start if the plugin fails to load).
 --innodb-cmp-per-index[=name] 
                     Enable or disable INNODB_CMP_PER_INDEX plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-cmp-per-index-enabled 
                     Enable INFORMATION_SCHEMA.innodb_cmp_per_index, may have
                     negative impact on performance (off by default)
 --innodb-cmp-per-index-reset[=name] 
                     Enable or disable INNODB_CMP_PER_INDEX_RESET plugin.
                     Possible values are ON, OFF, FORCE (don't start if the
                     plugin fails to load).
 --innodb-cmp-reset[=name] 
                     Enable or disable INNODB_CMP_RESET plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-cmpmem[=name] 
                     Enable or disable INNODB_CMPMEM plugin. Possible values
                     are ON, OFF, FORCE (don't start if the plugin fails to
                     load).
 --innodb-cmpmem-reset[=name] 
                     Enable or disable INNODB_CMPMEM_RESET plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-commit-concurrency=# 
                     Helps in performance tuning in heavily concurrent
                     environments.
 --innodb-compression-failure-threshold-pct[=#] 
                     If the compression failure rate of a table is greater
                     than this number more padding is added to the pages to
                     reduce the failures. A value of zero implies no padding
 --innodb-compression-level=# 
                     Compression level used for compressed row format.  0 is
                     no compression, 1 is fastest, 9 is best compression and
                     default is 6.
 --innodb-compression-pad-pct-max[=#] 
                     Percentage of empty space on a data page that can be
                     reserved to make the page compressible.
 --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-disable-sort-file-cache 
                     Whether to disable OS system file cache for sort I/O
 --innodb-doublewrite 
                     Enable InnoDB doublewrite buffer (enabled by default).
                     Disable with --skip-innodb-doublewrite.
                     (Defaults to on; use --skip-innodb-doublewrite to disable.)
 --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-format=name 
                     File format to use for new tables in .ibd files.
 --innodb-file-format-check 
                     Whether to perform system file format check.
                     (Defaults to on; use --skip-innodb-file-format-check to disable.)
 --innodb-file-format-max[=name] 
                     The highest file format in the tablespace.
 --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.
                     (Defaults to on; use --skip-innodb-file-per-table to disable.)
 --innodb-flush-log-at-timeout[=#] 
                     Write and flush logs every (n) second.
 --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-flush-neighbors[=#] 
                     Set to 0 (don't flush neighbors from buffer pool), 1
                     (flush contiguous neighbors from buffer pool) or 2 (flush
                     neighbors from buffer pool), when flushing a block
 --innodb-flushing-avg-loops=# 
                     Number of iterations over which the background flushing
                     is averaged.
 --innodb-force-load-corrupted 
                     Force InnoDB to load metadata of corrupted table.
 --innodb-force-recovery=# 
                     Helps to save your data in case the disk image of the
                     database becomes corrupt.
 --innodb-ft-aux-table 
                     FTS internal auxiliary table to be checked
 --innodb-ft-being-deleted[=name] 
                     Enable or disable INNODB_FT_BEING_DELETED plugin.
                     Possible values are ON, OFF, FORCE (don't start if the
                     plugin fails to load).
 --innodb-ft-cache-size=# 
                     InnoDB Fulltext search cache size in bytes
 --innodb-ft-config[=name] 
                     Enable or disable INNODB_FT_CONFIG plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-ft-default-stopword[=name] 
                     Enable or disable INNODB_FT_DEFAULT_STOPWORD plugin.
                     Possible values are ON, OFF, FORCE (don't start if the
                     plugin fails to load).
 --innodb-ft-deleted[=name] 
                     Enable or disable INNODB_FT_DELETED plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-ft-enable-diag-print 
                     Whether to enable additional FTS diagnostic printout 
 --innodb-ft-enable-stopword 
                     Create FTS index with stopword.
                     (Defaults to on; use --skip-innodb-ft-enable-stopword to disable.)
 --innodb-ft-index-cache[=name] 
                     Enable or disable INNODB_FT_INDEX_CACHE plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-ft-index-table[=name] 
                     Enable or disable INNODB_FT_INDEX_TABLE plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-ft-max-token-size=# 
                     InnoDB Fulltext search maximum token size in characters
 --innodb-ft-min-token-size=# 
                     InnoDB Fulltext search minimum token size in characters
 --innodb-ft-num-word-optimize[=#] 
                     InnoDB Fulltext search number of words to optimize for
                     each optimize table call 
 --innodb-ft-server-stopword-table[=name] 
                     The user supplied stopword table name.
 --innodb-ft-sort-pll-degree=# 
                     InnoDB Fulltext search parallel sort degree, will round
                     up to nearest power of 2 number
 --innodb-ft-user-stopword-table[=name] 
                     User supplied stopword table name, effective in the
                     session level.
 --innodb-io-capacity=# 
                     Number of IOPs the server can do. Tunes the background IO
                     rate
 --innodb-io-capacity-max=# 
                     Limit to which innodb_io_capacity can be inflated.
 --innodb-large-prefix 
                     Support large index prefix length of
                     REC_VERSION_56_MAX_INDEX_COL_LEN (3072) bytes.
 --innodb-lock-wait-timeout=# 
                     Timeout in seconds an InnoDB transaction may wait for a
                     lock before being rolled back. Values above 100000000
                     disable the timeout.
 --innodb-lock-waits[=name] 
                     Enable or disable INNODB_LOCK_WAITS plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-locks[=name] 
                     Enable or disable INNODB_LOCKS plugin. Possible values
                     are ON, OFF, FORCE (don't start if the plugin fails to
                     load).
 --innodb-locks-unsafe-for-binlog 
                     DEPRECATED. This option may be removed in future
                     releases. Please use READ COMMITTED transaction isolation
                     level instead. 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-compressed-pages 
                     Enables/disables the logging of entire compressed page
                     images. InnoDB logs the compressed pages to prevent
                     corruption if the zlib compression algorithm changes.
                     When turned OFF, InnoDB will assume that the zlib
                     compression algorithm doesn't change.
                     (Defaults to on; use --skip-innodb-log-compressed-pages to disable.)
 --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.
 --innodb-log-group-home-dir=name 
                     Path to InnoDB log files.
 --innodb-lru-scan-depth=# 
                     How deep to scan LRU to keep it clean
 --innodb-max-dirty-pages-pct=# 
                     Percentage of dirty pages allowed in bufferpool.
 --innodb-max-dirty-pages-pct-lwm=# 
                     Percentage of dirty pages at which flushing kicks in.
 --innodb-max-purge-lag=# 
                     Desired maximum length of the purge queue (0 = no limit)
 --innodb-max-purge-lag-delay=# 
                     Maximum delay of user threads in micro-seconds
 --innodb-metrics[=name] 
                     Enable or disable INNODB_METRICS plugin. Possible values
                     are ON, OFF, FORCE (don't start if the plugin fails to
                     load).
 --innodb-mirrored-log-groups=# 
                     Number of identical copies of log groups we keep for the
                     database. Currently this should be set to 1.
 --innodb-monitor-disable=name 
                     Turn off a monitor counter
 --innodb-monitor-enable=name 
                     Turn on a monitor counter
 --innodb-monitor-reset=name 
                     Reset a monitor counter
 --innodb-monitor-reset-all=name 
                     Reset all values for a monitor counter
 --innodb-old-blocks-pct=# 
                     Percentage of the buffer pool to reserve for 'old'
                     blocks.
 --innodb-old-blocks-time=# 
                     Move blocks to the 'new' end of the buffer pool if the
                     first access was at least this many milliseconds ago. The
                     timeout is disabled if 0.
 --innodb-online-alter-log-max-size=# 
                     Maximum modification log file size for online index
                     creation
 --innodb-open-files=# 
                     How many files at the maximum InnoDB keeps open at the
                     same time.
 --innodb-optimize-fulltext-only 
                     Only optimize the Fulltext index of the table
 --innodb-page-size[=#] 
                     Page size to use for all InnoDB tablespaces.
 --innodb-print-all-deadlocks 
                     Print all deadlocks to MySQL error log (off by default)
 --innodb-purge-batch-size[=#] 
                     Number of UNDO log pages to purge in one batch from the
                     history list.
 --innodb-purge-threads[=#] 
                     Purge threads can be from 1 to 32. Default is 1.
 --innodb-random-read-ahead 
                     Whether to use read ahead for random access within an
                     extent.
 --innodb-read-ahead-threshold=# 
                     Number of pages that must be accessed sequentially for
                     InnoDB to trigger a readahead.
 --innodb-read-io-threads=# 
                     Number of background read I/O threads in InnoDB.
 --innodb-read-only  Start InnoDB in read only mode (off by default)
 --innodb-replication-delay=# 
                     Replication thread delay (ms) on the slave server if
                     innodb_thread_concurrency is reached (0 by default)
 --innodb-rollback-on-timeout 
                     Roll back the complete transaction on lock wait timeout,
                     for 4.x compatibility (disabled by default)
 --innodb-rollback-segments[=#] 
                     Number of undo logs to use (deprecated).
 --innodb-sort-buffer-size=# 
                     Memory buffer size for index creation
 --innodb-spin-wait-delay[=#] 
                     Maximum delay between polling for a spin lock (6 by
                     default)
 --innodb-stats-auto-recalc 
                     InnoDB automatic recalculation of persistent statistics
                     enabled for all tables unless overridden at table level
                     (automatic recalculation is only done when InnoDB decides
                     that the table has changed too much and needs a new
                     statistics)
                     (Defaults to on; use --skip-innodb-stats-auto-recalc to disable.)
 --innodb-stats-method=name 
                     Specifies how InnoDB index statistics collection code
                     should treat NULLs. Possible values are NULLS_EQUAL
                     (default), NULLS_UNEQUAL and NULLS_IGNORED
 --innodb-stats-on-metadata 
                     Enable statistics gathering for metadata commands such as
                     SHOW TABLE STATUS for tables that use transient
                     statistics (off by default)
 --innodb-stats-persistent 
                     InnoDB persistent statistics enabled for all tables
                     unless overridden at table level
                     (Defaults to on; use --skip-innodb-stats-persistent to disable.)
 --innodb-stats-persistent-sample-pages=# 
                     The number of leaf index pages to sample when calculating
                     persistent statistics (by ANALYZE, default 20)
 --innodb-stats-sample-pages=# 
                     Deprecated, use innodb_stats_transient_sample_pages
                     instead
 --innodb-stats-transient-sample-pages=# 
                     The number of leaf index pages to sample when calculating
                     transient statistics (if persistent statistics are not
                     used, default 8)
 --innodb-status-file 
                     Enable SHOW ENGINE INNODB STATUS output in the
                     innodb_status.<pid> file
 --innodb-strict-mode 
                     Use strict mode when evaluating create options.
 --innodb-support-xa Enable InnoDB support for the XA two-phase commit
                     (Defaults to on; use --skip-innodb-support-xa to disable.)
 --innodb-sync-array-size[=#] 
                     Size of the mutex/lock wait array.
 --innodb-sync-spin-loops=# 
                     Count of spin-loop rounds in InnoDB mutexes (30 by
                     default)
 --innodb-sys-columns[=name] 
                     Enable or disable INNODB_SYS_COLUMNS plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-sys-datafiles[=name] 
                     Enable or disable INNODB_SYS_DATAFILES plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-sys-fields[=name] 
                     Enable or disable INNODB_SYS_FIELDS plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-sys-foreign[=name] 
                     Enable or disable INNODB_SYS_FOREIGN plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-sys-foreign-cols[=name] 
                     Enable or disable INNODB_SYS_FOREIGN_COLS plugin.
                     Possible values are ON, OFF, FORCE (don't start if the
                     plugin fails to load).
 --innodb-sys-indexes[=name] 
                     Enable or disable INNODB_SYS_INDEXES plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-sys-tables[=name] 
                     Enable or disable INNODB_SYS_TABLES plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-sys-tablespaces[=name] 
                     Enable or disable INNODB_SYS_TABLESPACES plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-sys-tablestats[=name] 
                     Enable or disable INNODB_SYS_TABLESTATS plugin. Possible
                     values are ON, OFF, FORCE (don't start if the plugin
                     fails to load).
 --innodb-table-locks 
                     Enable InnoDB locking in LOCK TABLES
                     (Defaults to on; use --skip-innodb-table-locks to disable.)
 --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
 --innodb-trx[=name] Enable or disable INNODB_TRX plugin. Possible values are
                     ON, OFF, FORCE (don't start if the plugin fails to load).
 --innodb-undo-directory=name 
                     Directory where undo tablespace files live, this path can
                     be absolute.
 --innodb-undo-logs[=#] 
                     Number of undo logs to use.
 --innodb-undo-tablespaces=# 
                     Number of undo tablespaces to use. 
 --innodb-use-native-aio 
                     Use native AIO if supported on this platform.
                     (Defaults to on; use --skip-innodb-use-native-aio to disable.)
 --innodb-use-sys-malloc 
                     DEPRECATED. This option may be removed in future
                     releases, together with the InnoDB's internal memory
                     allocator. Use OS memory allocator instead of InnoDB's
                     internal memory allocator
                     (Defaults to on; use --skip-innodb-use-sys-malloc to disable.)
 --innodb-write-io-threads=# 
                     Number of background write I/O threads in InnoDB.
 --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
 --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. Deprecated. Use --lc-messages-dir instead.
 --large-pages       Enable support for large pages
 --lc-messages=name  Set the language used for the error messages.
 --lc-messages-dir=name 
                     Directory where error messages are
 --lc-time-names=name 
                     Set the language used for the month names and the days of
                     the week.
 --local-infile      Enable LOAD DATA LOCAL INFILE
                     (Defaults to on; use --skip-local-infile to disable.)
 --lock-wait-timeout=# 
                     Timeout in seconds to wait for a lock before returning an
                     error.
 --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 binary log files.
 --log-bin-trust-function-creators 
                     If set to FALSE (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 TRUE
 --log-bin-use-v1-row-events 
                     If equal to 1 then version 1 row events are written to a
                     row based binary log.  If equal to 0, then the latest
                     version of events are written.  This option is useful
                     during some upgrades.
 --log-error[=name]  Error log file
 --log-isam[=name]   Log all MyISAM changes to file.
 --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-raw           Log to general log before any rewriting of the query. For
                     use in debugging, not production as sensitive information
                     may be logged.
 --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-throttle-queries-not-using-indexes[=#] 
                     Log at most this many 'not using index' warnings per
                     minute to the slow log. Any further warnings will be
                     condensed into a single summary line. A value of 0
                     disables throttling. Option has no effect unless
                     --log_queries_not_using_indexes is set.