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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'.
--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.)
--avoid-temporal-upgrade
When this option is enabled, the pre-5.6.4 temporal types
are not upgraded to the new format for ALTER TABLE
requests ADD/CHANGE/MODIFY COLUMN, ADD INDEX or FORCE
operation. This variable is deprecated and will be
removed in a future release.
--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-error-action=name
When statements cannot be written to the binary log due
to a fatal error, the server can either ignore the error
and let the master continue, or abort.
--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-group-commit-sync-delay=#
The number of microseconds the server waits for the
binary log group commit sync queue to fill before
continuing. Default: 0. Min: 0. Max: 1000000.
--binlog-group-commit-sync-no-delay-count=#
If there are this many transactions in the commit sync
queue and the server is waiting for more transactions to
be enqueued (as set using
--binlog-group-commit-sync-delay), the commit procedure
resumes.
--binlog-gtid-simple-recovery
If this option is enabled, the server does not open more
than two binary logs when initializing GTID_PURGED and
GTID_EXECUTED, either during server restart or when
binary logs are being purged. Enabling this option is
useful when the server has already generated many binary
logs without GTID events (e.g., having GTID_MODE = OFF).
Note: If this option is enabled, GLOBAL.GTID_EXECUTED and
GLOBAL.GTID_PURGED may be initialized wrongly in two
cases: (1) All binary logs were generated by MySQL 5.7.5
or older, and GTID_MODE was ON for some binary logs but
OFF for the newest binary log. (2) The oldest existing
binary log was generated by MySQL 5.7.5 or older, and SET
GTID_PURGED was issued after the oldest binary log was
generated. If a wrong set is computed in one of case (1)
or case (2), it will remain wrong even if the server is
later restarted with this option disabled.
(Defaults to on; use --skip-binlog-gtid-simple-recovery to disable.)
--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
--binlog-transaction-dependency-history-size=#
Maximum number of rows to keep in the writeset history.
--binlog-transaction-dependency-tracking=name
Selects the source of dependency information from which
to assess which transactions can be executed in parallel
by the slave's multi-threaded applier. Possible values
are COMMIT_ORDER, WRITESET and WRITESET_SESSION.
--block-encryption-mode=name
mode for AES_ENCRYPT/AES_DECRYPT
--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
--check-proxy-users If set to FALSE (the default), then proxy user identity
will not be mapped for authentication plugins which
support mapping from grant tables. When set to TRUE,
users associated with authentication plugins which signal
proxy user mapping should be done according to GRANT
PROXY privilege definition.
-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
The default authentication plugin used by the server to
hash the password.
--default-password-lifetime=#
The number of days after which the password will expire.
--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.
--disable-partition-engine-check
Skip the check for non-natively partitioned tables during
bootstrap. This option is deprecated along with the
partition engine.
(Defaults to on; use --skip-disable-partition-engine-check to disable.)
--disabled-storage-engines=name
Limit CREATE TABLE for the storage engines listed
--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
--early-plugin-load=name
Optional semicolon-separated list of plugins to load
before storage engine initialization, where each plugin
is identified as name=library, where name is the plugin
name and library is the plugin library in plugin_dir.
--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[=name]
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. The
variable can only be set by users having the SUPER
privilege.
--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 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 to logging to a file hostname.log, or if
--log-output=TABLE is used, to a table mysql.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()
--gtid-executed-compression-period[=#]
When binlog is disabled, a background thread wakes up to
compress the gtid_executed table every
gtid_executed_compression_period transactions, as a
special case, if variable is 0, the thread never wakes up
to compress the gtid_executed table.
--gtid-mode=name Controls whether Global Transaction Identifiers (GTIDs)
are enabled. Can be OFF, OFF_PERMISSIVE, ON_PERMISSIVE,
or ON. OFF means that no transaction has a GTID.
OFF_PERMISSIVE means that new transactions (committed in
a client session using GTID_NEXT='AUTOMATIC') are not
assigned any GTID, and replicated transactions are
allowed to have or not have a GTID. ON_PERMISSIVE means
that new transactions are assigned a GTID, and replicated
transactions are allowed to have or not have a GTID. ON
means that all transactions have a GTID. ON is required
on a master before any slave can use
MASTER_AUTO_POSITION=1. To safely switch from OFF to ON,
first set all servers to OFF_PERMISSIVE, then set all
servers to ON_PERMISSIVE, then wait for all transactions
without a GTID to be replicated and executed on all
servers, and finally set all servers to GTID_MODE = ON.
-?, --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
--initialize Create the default database and exit. Create a super user
with a random expired password and store it into the log.
--initialize-insecure
Create the default database and exit. Create a super user
with empty password.
--interactive-timeout=#
The number of seconds the server waits for activity on an
interactive connection before closing it
--internal-tmp-disk-storage-engine[=name]
The default storage engine for on-disk internal tmp table
--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
--keyring-migration-destination=name
Keyring plugin to which the keys are migrated to. This
option must be specified along with
--keyring-migration-source.
--keyring-migration-host=name
Connect to host.
--keyring-migration-password[=name]
Password to use when connecting to server during keyring
migration. If password value is not specified then it
will be asked from the tty.
--keyring-migration-port=#
Port number to use for connection.
--keyring-migration-socket=name
The socket file to use for connection.
--keyring-migration-source=name
Keyring plugin from where the keys needs to be migrated
to. This option must be specified along with
--keyring-migration-destination.
--keyring-migration-user=name
User to login to server.
-L, --language=name Client error messages in given language. May be given as
a full path. Deprecated. Use --lc-messages-dir instead.
--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-builtin-as-identified-by-password
Controls logging of CREATE/ALTER/GRANT and SET PASSWORD
user statements in replication binlogs, general query
logs and audit logs.
--log-error[=name] Error log file
--log-error-verbosity=#
How detailed the error log should be. 1, log errors only.
2, log errors and warnings. 3, log errors, warnings, and
notes. Messages sent to the client are unaffected by this
setting.
--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-statements-unsafe-for-binlog
Log statements considered unsafe when using statement
based binary logging.
(Defaults to on; use --skip-log-statements-unsafe-for-binlog to disable.)
--log-syslog Errors, warnings, and similar issues eligible for MySQL's
error log file may additionally be sent to the host
operating system's system log ("syslog").
(Defaults to on; use --skip-log-syslog to disable.)
--log-syslog-tag=name
When logging issues using the host operating system's
syslog, tag the entries from this particular MySQL server
with this ident. This will help distinguish entries from
MySQL servers co-existing on the same host machine. A
non-empty tag will be appended to the default ident of
'mysqld', connected by a hyphen.
--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.
--log-timestamps=name
UTC to timestamp log files in zulu time, for more concise
timestamps and easier correlation of logs from servers
from multiple time zones, or SYSTEM to use the system's
local time. This affects only log files, not log tables,
as the timestamp columns of the latter can be converted
at will.
-W, --log-warnings[=#]
Log some not critical warnings to the log file
--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.
--master-info-repository=name
Defines the type of the repository for the master
information.
--master-retry-count=#
The number of tries the slave will make to connect to the
master before giving up. Deprecated option, use 'CHANGE
MASTER TO master_retry_count = <num>' instead.
--master-verify-checksum
Force checksum verification of logged events in binary
log before sending them to slaves or printing them in
output of SHOW BINLOG EVENTS. Disabled by default.
--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-dump-events=#
Option used by mysql-test for debugging and testing of
replication.
--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. This variable is deprecated along with
INSERT DELAYED.
--max-digest-length=#
Maximum length considered for digest text.
--max-error-count=# Max number of errors/warnings to store for a statement
--max-execution-time=#
Kill SELECT statement that takes over the specified
number of milliseconds
--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-points-in-geometry[=#]
Maximum number of points in a geometry
--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=#
Has no effect, deprecated
--metadata-locks-hash-instances=#
Has no effect, deprecated
--min-examined-row-limit=#
Don't write queries to slow log that examine fewer rows
than that
--multi-range-count=#
Number of key ranges to request at once. This variable
has no effect, and is deprecated. It will be removed in a
future release.
--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, 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
--mysql-native-password-proxy-users
If set to FALSE (the default), then the
mysql_native_password plugin will not signal for
authenticated users to be checked for mapping to proxy
users. When set to TRUE, the plugin will flag associated
authenticated accounts to be mapped to proxy users when
the server option check_proxy_users is enabled.
--named-pipe Enable the named pipe (NT)
--named-pipe-full-access-group=name
Name of Windows group granted full access to the named
pipe
--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
--offline-mode Make the server into offline mode
--old Use compatible behavior
--old-alter-table Use old, non-optimized alter table
--old-passwords=# Determine which hash algorithm to use when generating
passwords using the PASSWORD() function
--old-style-user-limits
Enable old-style user limits (before 5.0.3, user
resources were counted per each user+host vs. per
account).
--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_open_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
--optimizer-switch=name
optimizer_switch=option=val[,option=val...], where option
is one of {index_merge, index_merge_union,
index_merge_sort_union, index_merge_intersection,
engine_condition_pushdown, index_condition_pushdown, mrr,
mrr_cost_based, materialization, semijoin, loosescan,
firstmatch, duplicateweedout,
subquery_materialization_cost_based, block_nested_loop,
batched_key_access, use_index_extensions,
condition_fanout_filter, derived_merge,
prefer_ordering_index} and val is one of {on, off,
default}
--optimizer-trace=name
Controls tracing of the Optimizer:
optimizer_trace=option=val[,option=val...], where option
is one of {enabled, one_line} and val is one of {on,
default}
--optimizer-trace-features=name
Enables/disables tracing of selected features of the
Optimizer:
optimizer_trace_features=option=val[,option=val...],
where option is one of {greedy_search, range_optimizer,
dynamic_range, repeated_subselect} and val is one of {on,
off, default}
--optimizer-trace-limit=#
Maximum number of shown optimizer traces
--optimizer-trace-max-mem-size=#
Maximum allowed cumulated size of stored optimizer traces
--optimizer-trace-offset=#
Offset of first optimizer trace to show; see manual
--parser-max-mem-size=#
Maximum amount of memory available to the parser
--performance-schema
Enable the performance schema.
(Defaults to on; use --skip-performance-schema to disable.)
--performance-schema-accounts-size=#
Maximum number of instrumented user@host accounts. Use 0
to disable, -1 for automated scaling.
--performance-schema-consumer-events-stages-current
Default startup value for the events_stages_current
consumer.
--performance-schema-consumer-events-stages-history
Default startup value for the events_stages_history
consumer.
--performance-schema-consumer-events-stages-history-long
Default startup value for the events_stages_history_long
consumer.
--performance-schema-consumer-events-statements-current
Default startup value for the events_statements_current
consumer.
(Defaults to on; use --skip-performance-schema-consumer-events-statements-current to disable.)
--performance-schema-consumer-events-statements-history
Default startup value for the events_statements_history
consumer.
(Defaults to on; use --skip-performance-schema-consumer-events-statements-history to disable.)
--performance-schema-consumer-events-statements-history-long
Default startup value for the
events_statements_history_long consumer.
--performance-schema-consumer-events-transactions-current
Default startup value for the events_transactions_current
consumer.
--performance-schema-consumer-events-transactions-history
Default startup value for the events_transactions_history
consumer.
--performance-schema-consumer-events-transactions-history-long
Default startup value for the
events_transactions_history_long consumer.
--performance-schema-consumer-events-waits-current
Default startup value for the events_waits_current
consumer.
--performance-schema-consumer-events-waits-history
Default startup value for the events_waits_history
consumer.
--performance-schema-consumer-events-waits-history-long
Default startup value for the events_waits_history_long
consumer.
--performance-schema-consumer-global-instrumentation
Default startup value for the global_instrumentation
consumer.
(Defaults to on; use --skip-performance-schema-consumer-global-instrumentation to disable.)
--performance-schema-consumer-statements-digest
Default startup value for the statements_digest consumer.
(Defaults to on; use --skip-performance-schema-consumer-statements-digest to disable.)
--performance-schema-consumer-thread-instrumentation
Default startup value for the thread_instrumentation
consumer.
(Defaults to on; use --skip-performance-schema-consumer-thread-instrumentation to disable.)
--performance-schema-digests-size=#
Size of the statement digest. Use 0 to disable, -1 for
automated sizing.
--performance-schema-events-stages-history-long-size=#
Number of rows in EVENTS_STAGES_HISTORY_LONG. Use 0 to
disable, -1 for automated sizing.
--performance-schema-events-stages-history-size=#
Number of rows per thread in EVENTS_STAGES_HISTORY. Use 0
to disable, -1 for automated sizing.
--performance-schema-events-statements-history-long-size=#
Number of rows in EVENTS_STATEMENTS_HISTORY_LONG. Use 0
to disable, -1 for automated sizing.
--performance-schema-events-statements-history-size=#
Number of rows per thread in EVENTS_STATEMENTS_HISTORY.
Use 0 to disable, -1 for automated sizing.
--performance-schema-events-transactions-history-long-size=#
Number of rows in EVENTS_TRANSACTIONS_HISTORY_LONG. Use 0
to disable, -1 for automated sizing.
--performance-schema-events-transactions-history-size=#
Number of rows per thread in EVENTS_TRANSACTIONS_HISTORY.
Use 0 to disable, -1 for automated sizing.
--performance-schema-events-waits-history-long-size=#
Number of rows in EVENTS_WAITS_HISTORY_LONG. Use 0 to
disable, -1 for automated sizing.
--performance-schema-events-waits-history-size=#
Number of rows per thread in EVENTS_WAITS_HISTORY. Use 0
to disable, -1 for automated sizing.
--performance-schema-hosts-size=#
Maximum number of instrumented hosts. Use 0 to disable,
-1 for automated scaling.
--performance-schema-instrument[=name]
Default startup value for a performance schema
instrument.
--performance-schema-max-cond-classes=#
Maximum number of condition instruments.
--performance-schema-max-cond-instances=#
Maximum number of instrumented condition objects. Use 0
to disable, -1 for automated scaling.
--performance-schema-max-digest-length=#
Maximum length considered for digest text, when stored in
performance_schema tables.
--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. Use 0 to disable,
-1 for automated scaling.
--performance-schema-max-index-stat=#
Maximum number of index statistics for instrumented
tables. Use 0 to disable, -1 for automated scaling.
--performance-schema-max-memory-classes=#
Maximum number of memory pool instruments.
--performance-schema-max-metadata-locks=#
Maximum number of metadata locks. Use 0 to disable, -1
for automated scaling.
--performance-schema-max-mutex-classes=#
Maximum number of mutex instruments.
--performance-schema-max-mutex-instances=#
Maximum number of instrumented MUTEX objects. Use 0 to
disable, -1 for automated scaling.
--performance-schema-max-prepared-statements-instances=#
Maximum number of instrumented prepared statements. Use 0
to disable, -1 for automated scaling.
--performance-schema-max-program-instances=#
Maximum number of instrumented programs. Use 0 to
disable, -1 for automated scaling.
--performance-schema-max-rwlock-classes=#
Maximum number of rwlock instruments.
--performance-schema-max-rwlock-instances=#
Maximum number of instrumented RWLOCK objects. Use 0 to
disable, -1 for automated scaling.
--performance-schema-max-socket-classes=#
Maximum number of socket instruments.
--performance-schema-max-socket-instances=#
Maximum number of opened instrumented sockets. Use 0 to
disable, -1 for automated scaling.
--performance-schema-max-sql-text-length=#
Maximum length of displayed sql text.
--performance-schema-max-stage-classes=#
Maximum number of stage instruments.
--performance-schema-max-statement-classes=#
Maximum number of statement instruments.
--performance-schema-max-statement-stack=#
Number of rows per thread in EVENTS_STATEMENTS_CURRENT.
--performance-schema-max-table-handles=#
Maximum number of opened instrumented tables. Use 0 to
disable, -1 for automated scaling.
--performance-schema-max-table-instances=#
Maximum number of instrumented tables. Use 0 to disable,
-1 for automated scaling.
--performance-schema-max-table-lock-stat=#
Maximum number of lock statistics for instrumented
tables. Use 0 to disable, -1 for automated scaling.
--performance-schema-max-thread-classes=#
Maximum number of thread instruments.
--performance-schema-max-thread-instances=#
Maximum number of instrumented threads. Use 0 to disable,
-1 for automated scaling.
--performance-schema-session-connect-attrs-size=#
Size of session attribute string buffer per thread. Use 0
to disable, -1 for automated sizing.
--performance-schema-setup-actors-size=#
Maximum number of rows in SETUP_ACTORS. Use 0 to disable,
-1 for automated scaling.
--performance-schema-setup-objects-size=#
Maximum number of rows in SETUP_OBJECTS. Use 0 to
disable, -1 for automated scaling.
--performance-schema-users-size=#
Maximum number of instrumented users. Use 0 to disable,
-1 for automated scaling.
--pid-file=name Pid file used by safe_mysqld
--plugin-dir=name Directory for plugins
--plugin-load=name Optional semicolon-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-load-add=name
Optional semicolon-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. This option adds to the list specified by
--plugin-load in an incremental way. Multiple
--plugin-load-add are supported.
-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
--query-alloc-block-size=#
Allocation block size for query parsing and execution
--query-cache-limit=#
Don't cache results that are bigger than this. This
variable is deprecated and will be removed in a future
release.
--query-cache-min-res-unit=#
The minimum size for blocks allocated by the query cache.
This variable is deprecated and will be removed in a
future release.
--query-cache-size=#
The memory allocated to store results from old queries.
This variable is deprecated and will be removed in a
future release.
--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. This variable is
deprecated and will be removed in a future release.
--query-cache-wlock-invalidate
Invalidate queries in query cache on LOCK for write. This
variable is deprecated and will be removed in a future
release.
--query-prealloc-size=#
Persistent buffer for query parsing and execution
--range-alloc-block-size=#
Allocation block size for storing ranges during
optimization
--range-optimizer-max-mem-size=#
Maximum amount of memory used by the range optimizer to
allocate predicates during range analysis. The larger the
number, more memory may be consumed during range
analysis. If the value is too low to completed range
optimization of a query, index range scan will not be
considered for this query. A value of 0 means range
optimizer does not have any cap on memory.
--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
File that holds the names for relay log files.
--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-info-repository=name
Defines the type of the repository for the relay log
information and associated workers.
--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-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-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.
--replication-optimize-for-static-plugin-config
Optional flag that blocks plugin install/uninstall and
allows skipping the acquisition of the lock to read from
the plugin list and the usage of read-optimized
spin-locks. Use only when plugin hook callback needs
optimization (a lot of semi-sync slaves, for instance).
--replication-sender-observe-commit-only
Optional flag that allows for only calling back observer
hooks at commit.
--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
--require-secure-transport
When this option is enabled, connections attempted using
insecure transport will be rejected. Secure transports
are SSL/TLS, Unix socket or Shared Memory (on Windows).
--rpl-stop-slave-timeout=#
Timeout in seconds to wait for slave to stop before
returning a warning.
--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. Deprecated. Always TRUE.
(Defaults to on; use --skip-secure-auth to disable.)
--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
--server-id-bits=# Set number of significant bits in server-id
--session-track-gtids=name
Controls the amount of global transaction ids to be
included in the response packet sent by the
server.(Default: OFF).
--session-track-schema
Track changes to the 'default schema'.
(Defaults to on; use --skip-session-track-schema to disable.)
--session-track-state-change
Track changes to the 'session state'.
--session-track-system-variables=name
Track changes in registered system variables.
--session-track-transaction-info=name
Track changes to the transaction attributes. OFF to
disable; STATE to track just transaction state (Is there
an active transaction? Does it have any data? etc.);
CHARACTERISTICS to track transaction state and report all
statements needed to start a transaction with the same
characteristics (isolation level, read only/read write,
snapshot - but not any work done / data modified within
the transaction).
--sha256-password-proxy-users
If set to FALSE (the default), then the sha256_password
authentication plugin will not signal for authenticated
users to be checked for mapping to proxy users. When set
to TRUE, the plugin will flag associated authenticated
accounts to be mapped to proxy users when the server
option check_proxy_users is enabled.
--shared-memory Enable the shared memory
--shared-memory-base-name=name
Base name of shared memory
--show-compatibility-56
SHOW commands / INFORMATION_SCHEMA tables compatible with
MySQL 5.6
--show-create-table-verbosity
When this option is enabled, it increases the verbosity
of 'SHOW CREATE TABLE'.
--show-old-temporals
When this option is enabled, the pre-5.6.4 temporal types
will be marked in the 'SHOW CREATE TABLE' and
'INFORMATION_SCHEMA.COLUMNS' table as a comment in
COLUMN_TYPE field. This variable is deprecated and will
be removed in a future release.
--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-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, possibly 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.
--slave-allow-batching
Allow slave to batch requests
--slave-checkpoint-group=#
Maximum number of processed transactions by
Multi-threaded slave before a checkpoint operation is
called to update progress status.
--slave-checkpoint-period=#
Gather workers' activities to Update progress status of
Multi-threaded slave and flush the relay log info to disk
after every #th milli-seconds.
--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-parallel-type=name
Specifies if the slave will use database partitioning or
information from master to parallelize
transactions.(Default: DATABASE).
--slave-parallel-workers=#
Number of worker threads for executing events in parallel
--slave-pending-jobs-size-max=#
Max size of Slave Worker queues holding yet not applied
events.The least possible value must be not less than the
master side max_allowed_packet.
--slave-preserve-commit-order
Force slave workers to make commits in the same order as
on the master. Disabled by default.
--slave-rows-search-algorithms=name
Set of searching algorithms that the slave will use while
searching for records from the storage engine to either
updated or deleted them. Possible values are: INDEX_SCAN,
TABLE_SCAN and HASH_SCAN. Any combination is allowed, and
the slave will always pick the most suitable algorithm
for any given scenario. (Default: INDEX_SCAN,
TABLE_SCAN).
--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. Enabled by
default.
(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,
ALL_NON_LOSSY to enable non-lossy conversions,
ALL_UNSIGNED to treat all integer column type data to be
unsigned values, and ALL_SIGNED to treat all integer
column type data to be signed values. Default treatment
is ALL_SIGNED. If ALL_SIGNED and ALL_UNSIGNED both are
specified, ALL_SIGNED will take higher priority than
ALL_UNSIGNED. 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
--slow-start-timeout=#
Maximum number of milliseconds that the service control
manager should wait before trying to kill the windows
service during startup(Default: 15000).
--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-mode=name Syntax: sql-mode=mode[,mode[,mode...]]. See the manual
for the complete list of valid sql modes
--standalone Dummy option to start as a standalone program (NT).
--stored-program-cache=#
The soft upper limit for number of cached stored routines
for one connection.
--super-read-only Make all non-temporary tables read-only, with the
exception for replication (slave) threads. Users with
the SUPER privilege are affected, unlike read_only.
Setting super_read_only to ON also sets read_only to ON.
-s, --symbolic-links
Enable symbolic link support.
--sync-binlog=# Synchronously flush binary log to disk after every #th
write to the file. Use 0 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 to disable synchronous flushing
--sync-relay-log=# Synchronously flush relay log to disk after every #th
event. Use 0 to disable synchronous flushing
--sync-relay-log-info=#
Synchronously flush relay log info to disk after every
#th transaction. Use 0 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-definition-cache=#
The number of cached table definitions
--table-open-cache=#
The number of cached open tables (total for all table
cache instances)
--table-open-cache-instances=#
The number of table cache instances
--tc-heuristic-recover=name
Decision to use in heuristic recover process. Possible
values are OFF, COMMIT or ROLLBACK.
--thread-cache-size=#
How many threads we should keep in a cache for reuse
--thread-handling=name
Define threads usage for handling queries, one of
one-thread-per-connection, no-threads, loaded-dynamically
--thread-stack=# The stack size for each thread
--time-format=name The TIME format (ignored)
--tls-version=name TLS version, permitted values are TLSv1, TLSv1.1,
TLSv1.2(Only for openssl)
--tmp-table-size=# If an internal in-memory temporary table exceeds this
size, MySQL will automatically convert it to an on-disk
MyISAM table
-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
--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
--transaction-read-only
Default transaction access mode. True if transactions are
read-only.
--transaction-write-set-extraction[=name]
This option is used to let the server know when to
extract the write set which will be used for various
purposes.
--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.
--validate-user-plugins
Turns on additional validation of authentication plugins
assigned to user accounts.
(Defaults to on; use --skip-validate-user-plugins to disable.)
-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)
abort-slave-event-count 0
allow-suspicious-udfs FALSE
auto-increment-increment 1
auto-increment-offset 1
autocommit TRUE
automatic-sp-privileges TRUE
avoid-temporal-upgrade FALSE
back-log 80
big-tables FALSE
bind-address *
binlog-cache-size 32768
binlog-checksum CRC32
binlog-direct-non-transactional-updates FALSE
binlog-error-action ABORT_SERVER
binlog-format ROW
binlog-group-commit-sync-delay 0
binlog-group-commit-sync-no-delay-count 0
binlog-gtid-simple-recovery TRUE
binlog-max-flush-queue-time 0
binlog-order-commits TRUE
binlog-row-event-max-size 8192
binlog-row-image FULL
binlog-rows-query-log-events FALSE
binlog-stmt-cache-size 32768
binlog-transaction-dependency-history-size 25000
binlog-transaction-dependency-tracking COMMIT_ORDER
block-encryption-mode aes-128-ecb
bulk-insert-buffer-size 8388608
character-set-client-handshake TRUE
character-set-filesystem binary
character-set-server latin1
character-sets-dir MYSQL_CHARSETSDIR/
check-proxy-users FALSE
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
default-authentication-plugin mysql_native_password
default-password-lifetime 0
default-storage-engine InnoDB
default-time-zone (No default value)
default-tmp-storage-engine InnoDB
default-week-format 0
delay-key-write ON
delayed-insert-limit 100
delayed-insert-timeout 300
delayed-queue-size 1000
disable-partition-engine-check TRUE
disabled-storage-engines
disconnect-on-expired-password TRUE
disconnect-slave-event-count 0
div-precision-increment 4
end-markers-in-json FALSE
enforce-gtid-consistency FALSE
eq-range-index-dive-limit 200
event-scheduler OFF
expire-logs-days 0
explicit-defaults-for-timestamp FALSE
external-locking FALSE
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
gtid-executed-compression-period 1000
gtid-mode OFF
help TRUE
host-cache-size 279
ignore-builtin-innodb FALSE
init-connect
init-file (No default value)
init-slave
initialize FALSE
initialize-insecure FALSE
interactive-timeout 28800
internal-tmp-disk-storage-engine InnoDB
join-buffer-size 262144
keep-files-on-create FALSE
key-buffer-size 8388608
key-cache-age-threshold 300
key-cache-block-size 1024
key-cache-division-limit 100
keyring-migration-destination (No default value)
keyring-migration-host (No default value)
keyring-migration-port 0
keyring-migration-socket (No default value)
keyring-migration-source (No default value)
keyring-migration-user (No default value)
language MYSQL_SHAREDIR/
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-bin-use-v1-row-events FALSE
log-builtin-as-identified-by-password FALSE
log-error stderr
log-error-verbosity 1
log-isam myisam.log
log-output FILE
log-queries-not-using-indexes FALSE
log-raw FALSE
log-short-format FALSE
log-slave-updates FALSE
log-slow-admin-statements FALSE
log-slow-slave-statements FALSE
log-statements-unsafe-for-binlog TRUE
log-syslog FALSE
log-syslog-tag
log-tc tc.log
log-tc-size #####
log-throttle-queries-not-using-indexes 0
log-timestamps UTC
log-warnings 0
long-query-time 10
low-priority-updates FALSE
lower-case-table-names 1
master-info-file master.info
master-info-repository FILE
master-retry-count 86400
master-verify-checksum FALSE
max-allowed-packet 4194304
max-binlog-cache-size 18446744073709547520
max-binlog-dump-events 0
max-binlog-size 1073741824
max-binlog-stmt-cache-size 18446744073709547520
max-connect-errors 100
max-connections 151
max-delayed-threads 20
max-digest-length 1024
max-error-count 64
max-execution-time 0
max-heap-table-size 16777216
max-join-size 18446744073709551615
max-length-for-sort-data 1024
max-points-in-geometry 65536
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
metadata-locks-hash-instances 8
min-examined-row-limit 0
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 OFF
myisam-repair-threads 1
myisam-sort-buffer-size 8388608
myisam-stats-method nulls_unequal
myisam-use-mmap FALSE
mysql-native-password-proxy-users FALSE
named-pipe FALSE
named-pipe-full-access-group
net-buffer-length 16384
net-read-timeout 30
net-retry-count 10
net-write-timeout 60
new FALSE
offline-mode FALSE
old FALSE
old-alter-table FALSE
old-passwords 0
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,engine_condition_pushdown=on,index_condition_pushdown=on,mrr=on,mrr_cost_based=on,block_nested_loop=on,batched_key_access=off,materialization=on,semijoin=on,loosescan=on,firstmatch=on,duplicateweedout=on,subquery_materialization_cost_based=on,use_index_extensions=on,condition_fanout_filter=on,derived_merge=on,prefer_ordering_index=on
optimizer-trace
optimizer-trace-features greedy_search=on,range_optimizer=on,dynamic_range=on,repeated_subselect=on
optimizer-trace-limit 1
optimizer-trace-max-mem-size 16384
optimizer-trace-offset -1
parser-max-mem-size 18446744073709551615
performance-schema TRUE
performance-schema-accounts-size -1
performance-schema-consumer-events-stages-current FALSE
performance-schema-consumer-events-stages-history FALSE
performance-schema-consumer-events-stages-history-long FALSE
performance-schema-consumer-events-statements-current TRUE
performance-schema-consumer-events-statements-history TRUE
performance-schema-consumer-events-statements-history-long FALSE
performance-schema-consumer-events-transactions-current FALSE
performance-schema-consumer-events-transactions-history FALSE
performance-schema-consumer-events-transactions-history-long FALSE
performance-schema-consumer-events-waits-current FALSE
performance-schema-consumer-events-waits-history FALSE
performance-schema-consumer-events-waits-history-long FALSE
performance-schema-consumer-global-instrumentation TRUE
performance-schema-consumer-statements-digest TRUE
performance-schema-consumer-thread-instrumentation TRUE
performance-schema-digests-size -1
performance-schema-events-stages-history-long-size -1
performance-schema-events-stages-history-size -1
performance-schema-events-statements-history-long-size -1
performance-schema-events-statements-history-size -1
performance-schema-events-transactions-history-long-size -1
performance-schema-events-transactions-history-size -1
performance-schema-events-waits-history-long-size -1
performance-schema-events-waits-history-size -1
performance-schema-hosts-size -1
performance-schema-instrument
performance-schema-max-cond-classes 80
performance-schema-max-cond-instances -1
performance-schema-max-digest-length 1024
performance-schema-max-file-classes 80
performance-schema-max-file-handles 32768
performance-schema-max-file-instances -1
performance-schema-max-index-stat -1
performance-schema-max-memory-classes 320
performance-schema-max-metadata-locks -1
performance-schema-max-mutex-classes 210
performance-schema-max-mutex-instances -1
performance-schema-max-prepared-statements-instances -1
performance-schema-max-program-instances -1
performance-schema-max-rwlock-classes 50
performance-schema-max-rwlock-instances -1
performance-schema-max-socket-classes 10
performance-schema-max-socket-instances -1
performance-schema-max-sql-text-length 1024
performance-schema-max-stage-classes 150
performance-schema-max-statement-classes 193
performance-schema-max-statement-stack 10
performance-schema-max-table-handles -1
performance-schema-max-table-instances -1
performance-schema-max-table-lock-stat -1
performance-schema-max-thread-classes 50
performance-schema-max-thread-instances -1
performance-schema-session-connect-attrs-size -1
performance-schema-setup-actors-size -1
performance-schema-setup-objects-size -1
performance-schema-users-size -1
port ####
port-open-timeout 0
preload-buffer-size 32768
profiling-history-size 15
query-alloc-block-size 8192
query-cache-limit 1048576
query-cache-min-res-unit 4096
query-cache-size 1048576
query-cache-type OFF
query-cache-wlock-invalidate FALSE
query-prealloc-size 8192
range-alloc-block-size 4096
range-optimizer-max-mem-size 8388608
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-info-repository FILE
relay-log-purge TRUE
relay-log-recovery FALSE
relay-log-space-limit 0
replicate-same-server-id FALSE
replication-optimize-for-static-plugin-config FALSE
replication-sender-observe-commit-only FALSE
report-host (No default value)
report-password (No default value)
report-port 0
report-user (No default value)
require-secure-transport FALSE
rpl-stop-slave-timeout 31536000
safe-user-create FALSE
secure-auth TRUE
server-id 0
server-id-bits 32
session-track-gtids OFF
session-track-schema TRUE
session-track-state-change FALSE
session-track-system-variables time_zone,autocommit,character_set_client,character_set_results,character_set_connection
session-track-transaction-info OFF
sha256-password-proxy-users FALSE
shared-memory FALSE
shared-memory-base-name MYSQL
show-compatibility-56 FALSE
show-create-table-verbosity FALSE
show-old-temporals FALSE
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-allow-batching FALSE
slave-checkpoint-group 512
slave-checkpoint-period 300
slave-compressed-protocol FALSE
slave-exec-mode STRICT
slave-max-allowed-packet 1073741824
slave-net-timeout 60
slave-parallel-type DATABASE
slave-parallel-workers 0
slave-pending-jobs-size-max 16777216
slave-preserve-commit-order FALSE
slave-rows-search-algorithms TABLE_SCAN,INDEX_SCAN
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
slow-start-timeout 15000
sort-buffer-size 262144
sporadic-binlog-dump-fail FALSE
sql-mode ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
stored-program-cache 256
super-read-only FALSE
symbolic-links FALSE
sync-binlog 1
sync-frm TRUE
sync-master-info 10000
sync-relay-log 10000
sync-relay-log-info 10000
sysdate-is-now FALSE
table-open-cache-instances 16
tc-heuristic-recover OFF
thread-cache-size 9
thread-handling one-thread-per-connection
thread-stack 262144
time-format %H:%i:%s
tmp-table-size 16777216
transaction-alloc-block-size 8192
transaction-isolation REPEATABLE-READ
transaction-prealloc-size 4096
transaction-read-only FALSE
transaction-write-set-extraction OFF
updatable-views-with-limit YES
validate-user-plugins TRUE
verbose TRUE
wait-timeout 28800
To see what values a running MySQL server is using, type
'mysqladmin variables' instead of 'mysqld --verbose --help'.