mariadb/mysql-test/r/mysqld--help.result

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.
--defaults-file=# Only read default options from the given file #.
--defaults-extra-file=# Read this file after the global files are read.

 --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'.
 --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-annotate-row-events 
 Tells the master to annotate RBR events with the
 statement that caused these events
 --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 NONE.
 --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-optimize-thread-scheduling 
 Run fast part of group commit in a single thread, to
 optimize kernel thread scheduling. On by default. Disable
 to run each transaction in group commit in its own
 thread, which can be slower at very high concurrency.
 This option is mostly for testing one algorithm versus
 the other, and it should not normally be necessary to
 change it.
 (Defaults to on; use --skip-binlog-optimize-thread-scheduling 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-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
 --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)
 --deadlock-search-depth-long=# 
 Long search depth for the two-step deadlock detection
 --deadlock-search-depth-short=# 
 Short search depth for the two-step deadlock detection
 --deadlock-timeout-long=# 
 Long timeout for the two-step deadlock detection (in
 microseconds)
 --deadlock-timeout-short=# 
 Short timeout for the two-step deadlock detection (in
 microseconds)
 --default-storage-engine=name 
 The default storage engine for new tables
 --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
 --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
 --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
 --div-precision-increment=# 
 Precision of the result of '/' operator will be increased
 on that value
 --engine-condition-pushdown 
 Push supported query conditions to the storage engine.
 Deprecated, use --optimizer-switch instead.
 (Defaults to on; use --skip-engine-condition-pushdown to disable.)
 --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)
 --expensive-subquery-limit=# 
 The maximum number of rows a subquery may examine in
 order to be executed during optimization and used for
 constant optimization
 --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.
 --extra-max-connections=# 
 The number of connections on extra-port
 --extra-port=#      Extra port number to use for tcp connections in a
 one-thread-per-connection manner. 0 means don't use
 another port
 --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. Deprecated, use
 --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()
 -?, --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
 (unless the user has SUPER privilege)
 --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 by a slave server each time
 the SQL thread starts
 --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 joins
 --join-buffer-space-limit=# 
 The limit of the space for all join buffers used by a
 query
 --join-cache-level=# 
 Controls what join operations can be executed with join
 buffers. Odd numbers are used for plain join buffers
 while even numbers are used for linked buffers
 --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
 --key-cache-segments=# 
 The number of segments in a 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.
 -L, --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.
 -l, --log[=name]    Log connections and queries to file (deprecated option,
 use --general-log/--general-log-file instead).
 --log-basename=name Basename for all log files and the .pid file. This sets
 all log file names at once (in 'datadir') and is normally
 the only option you need for specifying log files. Sets
 names for --log-bin, --log-bin-index, --relay-log,
 --relay-log-index, --general-log-file,
 --log-slow-query-log-file, --log-error-file, and
 --pid-file
 --log-bin[=name]    Log update queries in binary format. Optional argument
 should be name for binary log. If not given
 'datadir'/'log-basename'-bin or 'datadir'/mysql-bin will
 be used (the later if --log-basename is not specified).
 We strongly recommend to use either --log-basename or
 specify a filename to ensure that replication doesn't
 stop if the real hostname of the computer changes.
 --log-bin-index=name 
 File that holds the names for last 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-error[=name]  Log errors to file (instead of stdout).  If file name is
 not specified then 'datadir'/'log-basename'.err or the
 'pid-file' path with extension .err is used
 --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-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-filter=name 
 Log only certain types of queries. Multiple flags can be
 specified, separated by commas. Valid values are admin,
 slave, filesort, filesort_on_disk, full_join, full_scan,
 query_cache, query_cache_miss, tmp_table,
 tmp_table_on_disk
 --log-slow-queries[=name] 
 Enable logging of slow queries (longer than
 --long-query-time) to log file or table. Optional
 argument is a file name for the slow log. If not given,
 'log-basename'-slow.log will be used. Use
 --log-output=TABLE if you want to have the log in the
 table mysql.slow_log. Deprecated option, use
 --slow-query-log/--slow-query-log-file instead.
 --log-slow-rate-limit=# 
 Write to slow log every #th slow query. Set to 1 to log
 everything. Increase it to reduce the size of the slow or
 the performance impact of slow logging
 --log-slow-slave-statements 
 Log slow statements executed by slave thread to the slow
 log if it is open.
 --log-slow-verbosity=name 
 log-slow-verbosity=[value[,value ...]] where value is one
 of 'innodb', 'query_plan'
 --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.
 -W, --log-warnings[=#] 
 Log some not critical warnings to the general log
 file.Value can be between 0 and 11. Higher values mean
 more verbosity
 --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 precision
 --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-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. Defaults to master.info
 --master-retry-count=# 
 The number of tries the slave will make to connect to the
 master before giving up.
 --master-verify-checksum 
 Force checksum verification of logged events in the
 binary log before sending them to slaves or printing them
 in the output of SHOW BINLOG EVENTS
 --max-allowed-packet=# 
 Max packet length to send to or receive from the server
 --max-binlog-cache-size=# 
 Sets the total size of the transactional cache
 --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
 --max-binlog-stmt-cache-size=# 
 Sets the total size of the statement cache
 --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-connections=# The number of simultaneous clients allowed
 --max-delayed-threads=# 
 Don't start more than this number of threads to handle
 INSERT DELAYED statements. If set to zero INSERT DELAYED
 will be 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-long-data-size=# 
 The maximum BLOB length to send to server from
 mysql_send_long_data API. Deprecated option; use
 max_allowed_packet instead.
 --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: when the size
 exceeds max_binlog_size
 --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
 --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.
 --metadata-locks-cache-size=# 
 Size of unused metadata locks cache
 --min-examined-row-limit=# 
 Don't write queries to slow log that examine fewer rows
 than that
 --mrr-buffer-size=# Size of buffer to use when using MRR with range access
 --multi-range-count=# 
 Ignored. Use mrr_buffer_size instead
 --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-sort-file-size=# 
 Don't use the fast sort index method to created index if
 the temporary file would get bigger than this
 --myisam-mmap-size=# 
 Restricts the total memory used for memory mapping of
 MySQL tables
 --myisam-recover-options[=name] 
 Syntax: myisam-recover-options[=option[,option...]],
 where option can be DEFAULT, BACKUP, BACKUP_ALL, FORCE,
 QUICK, or OFF
 --myisam-repair-threads=# 
 If larger than 1, when repairing a MyISAM table all
 indexes will be created in parallel, with one thread per
 index. 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 treat NULLs. Possible values of name are
 NULLS_UNEQUAL (default behavior for 4.1 and later),
 NULLS_EQUAL (emulate 4.0 behavior), and NULLS_IGNORED
 --myisam-use-mmap   Use memory mapping for reading and writing MyISAM tables
 --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
 --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 file descriptors
 --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. Values smaller 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 63, the
 optimizer will switch to the original find_best search.
 NOTE: The value 63 and its associated behaviour is
 deprecated
 --optimizer-switch=name 
 optimizer_switch=option=val[,option=val...], where option
 is one of {derived_merge, derived_with_keys, firstmatch,
 in_to_exists, engine_condition_pushdown,
 index_condition_pushdown, index_merge,
 index_merge_intersection, index_merge_sort_intersection,
 index_merge_sort_union, index_merge_union,
 join_cache_bka, join_cache_hashed,
 join_cache_incremental, loosescan, materialization, mrr,
 mrr_cost_based, mrr_sort_keys, optimize_join_buffer_size,
 outer_join_with_cache, partial_match_rowid_merge,
 partial_match_table_scan, semijoin, semijoin_with_cache,
 subquery_cache, table_elimination, extended_keys } and
 val is one of {on, off, default}
 --performance-schema 
 Enable the performance schema.
 --performance-schema-events-waits-history-long-size=# 
 Number of rows in EVENTS_WAITS_HISTORY_LONG.
 --performance-schema-events-waits-history-size=# 
 Number of rows per thread in EVENTS_WAITS_HISTORY.
 --performance-schema-max-cond-classes=# 
 Maximum number of condition instruments.
 --performance-schema-max-cond-instances=# 
 Maximum number of instrumented condition objects.
 --performance-schema-max-file-classes=# 
 Maximum number of file instruments.
 --performance-schema-max-file-handles=# 
 Maximum number of opened instrumented files.
 --performance-schema-max-file-instances=# 
 Maximum number of instrumented files.
 --performance-schema-max-mutex-classes=# 
 Maximum number of mutex instruments.
 --performance-schema-max-mutex-instances=# 
 Maximum number of instrumented MUTEX objects.
 --performance-schema-max-rwlock-classes=# 
 Maximum number of rwlock instruments.
 --performance-schema-max-rwlock-instances=# 
 Maximum number of instrumented RWLOCK objects.
 --performance-schema-max-table-handles=# 
 Maximum number of opened instrumented tables.
 --performance-schema-max-table-instances=# 
 Maximum number of instrumented tables.
 --performance-schema-max-thread-classes=# 
 Maximum number of thread instruments.
 --performance-schema-max-thread-instances=# 
 Maximum number of instrumented threads.
 --pid-file=name     Pid file used by safe_mysqld
 --plugin-dir=name   Directory for plugins
 --plugin-load=name  Semicolon-separated list of plugins to load, where each
 plugin is specified as ether a plugin_name=library_file
 pair or only a library_file. If the latter case, all
 plugins from a given library_file will be loaded.
 --plugin-maturity=name 
 The lowest desirable plugin maturity (unknown,
 experimental, alpha, beta, gamma, or stable). Plugins
 less mature than that will not be installed or loaded.
 -P, --port=#        Port number to use for connection or 0 to default to,
 my.cnf, $MYSQL_TCP_PORT, /etc/services, built-in default
 (3306), whatever comes first
 --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
 --progress-report-time=# 
 Seconds between sending progress reports to the client
 for time-consuming statements. Set to 0 to disable
 progress reporting.
 --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=# 
 The minimum size for blocks allocated by the query cache
 --query-cache-size=# 
 The memory allocated to store results from old queries
 --query-cache-strip-comments 
 Strip all comments from a query before storing it in the
 query cache
 --query-cache-type=name 
 OFF = Don't cache or retrieve results. ON = Cache all
 results except SELECT SQL_NO_CACHE ... queries. 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
 --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   if disabled - do not purge relay logs. if enabled - purge
 them as soon as they are no more needed
 (Defaults to on; use --skip-relay-log-purge to disable.)
 --relay-log-recovery 
 Enables automatic relay log recovery right after the
 database startup, which means that the IO Thread starts
 re-fetching from the master right after the last
 transaction processed
 --relay-log-space-limit=# 
 Maximum space to use for all relay logs
 --replicate-annotate-row-events 
 Tells the slave to write annotate rows events recieved
 from the master to its own binary log. Ignored if
 log_slave_updates is not set
 --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-events-marked-for-skip=name 
 Whether the slave should replicate events that were
 created with @@skip_replication=1 on the master. Default
 REPLICATE (no events are skipped). Other values are
 FILTER_ON_SLAVE (events will be sent by the master but
 ignored by the slave) and FILTER_ON_MASTER (events marked
 with @@skip_replication=1 will be filtered on the master
 and never be sent to the slave).
 --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-database 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 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 
 The account password of the slave to be reported to the
 master during slave registration
 --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  The account user name of the slave to be reported to the
 master during slave registration
 --rowid-merge-buff-size=# 
 The size of the buffers used [NOT] IN evaluation via
 partial matching
 --rpl-recovery-rank=# 
 Unused, will be removed
 --safe-mode         Skip some optimize stages (for testing). Deprecated.
 --safe-user-create  Don't allow new user creation by the user who has no
 write privileges to the mysql.user table.
 --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
 --show-slave-auth-info 
 Show user and password in SHOW SLAVE HOSTS on this
 master.
 --skip-bdb          Deprecated option; Exist only for compatiblity with old
 my.cnf files
 --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-name-resolve Don't resolve hostnames. All hostnames are IP's or
 'localhost'.
 --skip-networking   Don't allow connection with TCP/IP
 --skip-show-database 
 Don't allow 'SHOW DATABASE' commands
 --skip-slave-start  If set, slave is not autostarted.
 --skip-thread-priority 
 Don't give threads different priorities. This option is
 deprecated because it has no effect; the implied behavior
 is already the default.
 --slave-compressed-protocol 
 Use compression on master/slave protocol
 --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-max-allowed-packet=# 
 The maximum packet length to sent successfully from the
 master to slave.
 --slave-net-timeout=# 
 Number of seconds to wait for more data from a
 master/slave connection before aborting the read
 --slave-skip-errors=name 
 Tells the slave thread to continue replication when a
 query event returns an error from the provided list
 --slave-sql-verify-checksum 
 Force checksum verification of replication events after
 reading them from relay log. Note: Events are always
 checksum-verified by slave on receiving them from the
 network before writing them to the relay log
 (Defaults to on; use --skip-slave-sql-verify-checksum to disable.)
 --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
 --slave-type-conversions=name 
 Set of slave type conversions that are enabled. Legal
 values are: ALL_LOSSY to enable lossy conversions and
 ALL_NON_LOSSY to enable non-lossy conversions. If the
 variable is assigned the empty set, no conversions are
 allowed and it is expected that the types match exactly.
 --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    Log slow queries to a table or log file. Defaults logging
 to a file 'hostname'-slow.log or a table mysql.slow_log
 if --log-output=TABLE is used. Must be enabled to
 activate other slow log options
 --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
 --sql-mode=name     Syntax: sql-mode=mode[,mode[,mode...]]. See the manual
 for the complete list of valid sql modes
 --stack-trace       Print a symbolic stack trace on failure
 (Defaults to on; use --skip-stack-trace to disable.)
 --stored-program-cache=# 
 The soft upper limit for number of cached stored routines
 for one connection.
 -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 files to disk on creation
 (Defaults to on; use --skip-sync-frm to disable.)
 --sync-master-info=# 
 Synchronously flush master info to disk after every #th
 event. Use 0 (default) to disable synchronous flushing
 --sync-relay-log=#  Synchronously flush relay log to disk after every #th
 event. Use 0 (default) to disable synchronous flushing
 --sync-relay-log-info=# 
 Synchronously flush relay log info to disk after every
 #th transaction. Use 0 (default) to disable synchronous
 flushing
 --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-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.
 --thread-cache-size=# 
 How many threads we should keep in a cache for reuse
 --thread-stack=#    The stack size for each thread
 --time-format=name  The TIME format (ignored)
 --timed-mutexes     Specify whether to time mutexes (only InnoDB mutexes are
 currently supported)
 --tmp-table-size=#  If an internal in-memory temporary table exceeds this
 size, MySQL will automatically convert it to an on-disk
 MyISAM or Aria table
 -t, --tmpdir=name   Path for temporary files. Several paths may be specified,
 separated by a colon (:), in this case they are used in a
 round-robin fashion
 --transaction-alloc-block-size=# 
 Allocation block size for transactions to be stored in
 binary log
 --transaction-isolation=name 
 Default transaction isolation level.
 --transaction-prealloc-size=# 
 Persistent buffer for transactions to be stored in binary
 log
 --updatable-views-with-limit=name 
 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. 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)
 -u, --user=name     Run mysqld daemon as user.
 --userstat          Enables statistics gathering for USER_STATISTICS,
 CLIENT_STATISTICS, INDEX_STATISTICS and TABLE_STATISTICS
 tables in the INFORMATION_SCHEMA
 -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

Variables (--variable-name=value)
allow-suspicious-udfs FALSE
auto-increment-increment 1
auto-increment-offset 1
autocommit TRUE
automatic-sp-privileges TRUE
back-log 50
big-tables FALSE
bind-address (No default value)
binlog-annotate-row-events FALSE
binlog-cache-size 32768
binlog-checksum NONE
binlog-direct-non-transactional-updates FALSE
binlog-format STATEMENT
binlog-optimize-thread-scheduling TRUE
binlog-row-event-max-size 1024
binlog-stmt-cache-size 32768
bulk-insert-buffer-size 8388608
character-set-client-handshake TRUE
character-set-filesystem binary
character-set-server latin1
character-sets-dir MYSQL_CHARSETSDIR/
chroot (No default value)
collation-server latin1_swedish_ci
completion-type NO_CHAIN
concurrent-insert AUTO
connect-timeout 10
console FALSE
date-format %Y-%m-%d
datetime-format %Y-%m-%d %H:%i:%s
deadlock-search-depth-long 15
deadlock-search-depth-short 4
deadlock-timeout-long 50000000
deadlock-timeout-short 10000
default-storage-engine myisam
default-time-zone (No default value)
default-week-format 0
delay-key-write ON
delayed-insert-limit 100
delayed-insert-timeout 300
delayed-queue-size 1000
div-precision-increment 4
engine-condition-pushdown FALSE
event-scheduler OFF
expensive-subquery-limit 100
expire-logs-days 0
external-locking FALSE
extra-max-connections 1
extra-port 0
flush FALSE
flush-time 0
ft-boolean-syntax + -><()~*:""&|
ft-max-word-len 84
ft-min-word-len 4
ft-query-expansion-limit 20
ft-stopword-file (No default value)
gdb FALSE
general-log FALSE
group-concat-max-len 1024
help TRUE
ignore-builtin-innodb FALSE
init-connect 
init-file (No default value)
init-rpl-role MASTER
init-slave 
interactive-timeout 28800
join-buffer-size 131072
join-buffer-space-limit 2097152
join-cache-level 2
keep-files-on-create FALSE
key-buffer-size 134217728
key-cache-age-threshold 300
key-cache-block-size 1024
key-cache-division-limit 100
key-cache-segments 0
large-pages FALSE
lc-messages en_US
lc-messages-dir MYSQL_SHAREDIR/
lc-time-names en_US
local-infile TRUE
lock-wait-timeout 31536000
log-bin (No default value)
log-bin-index (No default value)
log-bin-trust-function-creators FALSE
log-error 
log-isam myisam.log
log-output FILE
log-queries-not-using-indexes FALSE
log-short-format FALSE
log-slave-updates FALSE
log-slow-admin-statements FALSE
log-slow-filter admin,filesort,filesort_on_disk,full_join,full_scan,query_cache,query_cache_miss,tmp_table,tmp_table_on_disk
log-slow-rate-limit 1
log-slow-slave-statements FALSE
log-slow-verbosity 
log-tc tc.log
log-tc-size 24576
log-warnings 1
long-query-time 10
low-priority-updates FALSE
lower-case-table-names 1
master-info-file master.info
master-retry-count 86400
master-verify-checksum FALSE
max-allowed-packet 1048576
max-binlog-cache-size 18446744073709547520
max-binlog-size 1073741824
max-binlog-stmt-cache-size 18446744073709547520
max-connect-errors 10
max-connections 151
max-delayed-threads 20
max-error-count 64
max-heap-table-size 16777216
max-join-size 18446744073709551615
max-length-for-sort-data 1024
max-long-data-size 1048576
max-prepared-stmt-count 16382
max-relay-log-size 0
max-seeks-for-key 18446744073709551615
max-sort-length 1024
max-sp-recursion-depth 0
max-tmp-tables 32
max-user-connections 0
max-write-lock-count 18446744073709551615
memlock FALSE
metadata-locks-cache-size 1024
min-examined-row-limit 0
mrr-buffer-size 262144
multi-range-count 256
myisam-block-size 1024
myisam-data-pointer-size 6
myisam-max-sort-file-size 9223372036853727232
myisam-mmap-size 18446744073709551615
myisam-recover-options DEFAULT
myisam-repair-threads 1
myisam-sort-buffer-size 8388608
myisam-stats-method nulls_unequal
myisam-use-mmap FALSE
net-buffer-length 16384
net-read-timeout 30
net-retry-count 10
net-write-timeout 60
old FALSE
old-alter-table FALSE
old-passwords FALSE
old-style-user-limits FALSE
optimizer-prune-level 1
optimizer-search-depth 62
optimizer-switch index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on
performance-schema FALSE
performance-schema-events-waits-history-long-size 10000
performance-schema-events-waits-history-size 10
performance-schema-max-cond-classes 80
performance-schema-max-cond-instances 1000
performance-schema-max-file-classes 50
performance-schema-max-file-handles 32768
performance-schema-max-file-instances 10000
performance-schema-max-mutex-classes 200
performance-schema-max-mutex-instances 1000000
performance-schema-max-rwlock-classes 30
performance-schema-max-rwlock-instances 1000000
performance-schema-max-table-handles 100000
performance-schema-max-table-instances 50000
performance-schema-max-thread-classes 50
performance-schema-max-thread-instances 1000
plugin-load (No default value)
plugin-maturity unknown
port 3306
port-open-timeout 0
preload-buffer-size 32768
profiling-history-size 15
progress-report-time 56
query-alloc-block-size 8192
query-cache-limit 1048576
query-cache-min-res-unit 4096
query-cache-size 0
query-cache-strip-comments FALSE
query-cache-type ON
query-cache-wlock-invalidate FALSE
query-prealloc-size 8192
range-alloc-block-size 4096
read-buffer-size 131072
read-only FALSE
read-rnd-buffer-size 262144
relay-log (No default value)
relay-log-index (No default value)
relay-log-info-file relay-log.info
relay-log-purge TRUE
relay-log-recovery FALSE
relay-log-space-limit 0
replicate-annotate-row-events FALSE
replicate-events-marked-for-skip replicate
replicate-same-server-id FALSE
report-host (No default value)
report-password (No default value)
report-port 0
report-user (No default value)
rowid-merge-buff-size 8388608
rpl-recovery-rank 0
safe-user-create FALSE
secure-auth FALSE
secure-file-priv (No default value)
server-id 0
show-slave-auth-info FALSE
skip-grant-tables TRUE
skip-name-resolve FALSE
skip-networking FALSE
skip-show-database FALSE
skip-slave-start FALSE
slave-compressed-protocol FALSE
slave-exec-mode STRICT
slave-max-allowed-packet 1073741824
slave-net-timeout 3600
slave-skip-errors (No default value)
slave-sql-verify-checksum TRUE
slave-transaction-retries 10
slave-type-conversions 
slow-launch-time 2
slow-query-log FALSE
sort-buffer-size 2097152
sql-mode 
stack-trace TRUE
stored-program-cache 256
symbolic-links FALSE
sync-binlog 0
sync-frm FALSE
sync-master-info 0
sync-relay-log 0
sync-relay-log-info 0
sysdate-is-now FALSE
table-cache 400
table-definition-cache 400
table-open-cache 400
tc-heuristic-recover COMMIT
thread-cache-size 0
thread-stack 294912
time-format %H:%i:%s
timed-mutexes FALSE
tmp-table-size 16777216
transaction-alloc-block-size 8192
transaction-isolation REPEATABLE-READ
transaction-prealloc-size 4096
updatable-views-with-limit YES
userstat FALSE
verbose TRUE
wait-timeout 28800

To see what values a running MySQL server is using, type
'mysqladmin variables' instead of 'mysqld --verbose --help'.