"Log some extra information to update log",0,0,0,GET_NO_ARG,NO_ARG,
0,0,0,0,0,0},
{"log-slave-updates",OPT_LOG_SLAVE_UPDATES,
"Tells the slave to log the updates from the slave thread to the binary log. Off by default. You will need to turn it on if you plan to daisy-chain the slaves.",
"INSERT/DELETE/UPDATE has lower priority than selects",0,0,0,GET_NO_ARG,
NO_ARG,0,0,0,0,0,0},
{"master-host",OPT_MASTER_HOST,
"Master hostname or IP address for replication. If not set, the slave thread will not be started. Note that the setting of master-host will be ignored if there exists a valid master.info file.",
"The username the slave thread will use for authentication when connecting to the master. The user must have FILE privilege. If the master user is not set, user test is assumed. The value in master.info will take precedence if it can be read.",
"The password the slave thread will authenticate with when connecting to the master. If not set, an empty password is assumed.The value in master.info will take precedence if it can be read.",
0,0,0,GET_STR,REQUIRED_ARG,0,0,0,0,0,0},
{"master-port",OPT_MASTER_PORT,
"The port the master is listening on. If not set, the compiled setting of MYSQL_PORT is assumed. If you have not tinkered with configure options, this should be 3306. The value in master.info will take precedence if it can be read",
"The location of the file that remembers where we left off on the master during the replication process. The default is `master.info' in the data directory. You should not need to change this.",
"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.%.",
"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.",
"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",
0,0,0,GET_STR,REQUIRED_ARG,0,0,0,0,0,0},
{"replicate-ignore-db",OPT_REPLICATE_IGNORE_DB,
"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.%. ",
"Tells the slave thread to not replicate to the specified table. To specify more than one table to ignore, use the directive multiple times, once for each table. This will work for cross-datbase updates, in contrast to replicate-ignore-db.",
"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.",
0,0,0,GET_STR,REQUIRED_ARG,0,0,0,0,0,0},
{"replicate-rewrite-db",OPT_REPLICATE_REWRITE_DB,
"Updates to a database with a different name than the original. Example: replicate-rewrite-db=master_db_name->slave_db_name",
0,0,0,GET_STR,REQUIRED_ARG,0,0,0,0,0,0},
// In replication, we may need to tell the other servers how to connect
// In replication, we may need to tell the other servers how to connect
"Hostname or IP of the slave to be reported to to the master during slave registration. Will appear in the output of SHOW SLAVE HOSTS. Leave unset if you do not want the slave to register itself with the master. Note that it is not sufficient for the master to simply read the IP of the slave off the socket once the slave connects. Due to NAT and other routing issues, that IP may not be valid for connecting to the slave from the master or other hosts.",
"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.",
"Tells the slave thread to continue replication when a query returns an error from the provided list. Normally, replication will discontinue when an error is encountered, giving the user a chance to resolve the inconsistency in the data manually. Do not use this option unless you fully understand why you are getting the errors. If there are no bugs in your replication setup and client programs, and no bugs in MySQL itself, you should never get an abort with error. Indiscriminate use of this option will result in slaves being hopelessly out of sync with the master and you having no idea how the problem happened. For error codes, you should use the numbers provided by the error message in your slave error log and in the output of SHOW SLAVE STATUS. Full list of error messages can be found in the source distribution in `Docs/mysqld_error.txt'. You can (but should not) also use a very non-recommended value of all which will ignore all error messages and keep barging along regardless. Needless to say, if you use it, we make no promises regarding your data integrity. Please do not complain if your data on the slave is not anywhere close to what it is on the master in this case -- you have been warned. Example: slave-skip-errors=1062,1053 or slave-skip-errors=all",
0,0,0,GET_STR,REQUIRED_ARG,0,0,0,0,0,0},
{"socket",OPT_SOCKET,"Socket file to use for connection",
"Syntax: sql-mode=option[,option[,option...]] where option can be one of: REAL_AS_FLOAT, PIPES_AS_CONCAT, ANSI_QUOTES, IGNORE_SPACE, SERIALIZE, ONLY_FULL_GROUP_BY, NO_UNSIGNED_SUBTRACTION.",
"Using this option will cause most temporary files created to use a small set of names, rather than a unique name for each new file. This is to work around a problem in the Linux kernel dealing with creating a bunch of new files with different names. With the old behavior, Linux seems to 'leak' memory, as it's being allocated to the directory entry cache instead of the disk cache.",
"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.",(gptr*)&back_log,(gptr*)&back_log,0,GET_ULONG,
REQUIRED_ARG,50,1,65535,0,1,0},
#ifdef HAVE_BERKELEY_DB
#ifdef HAVE_BERKELEY_DB
{"bdb_cache_size",(long*)&berkeley_cache_size,
{"bdb_cache_size",OPT_BDB_CACHE_SIZE,
KEY_CACHE_SIZE,20*1024,(long)~0,0,IO_SIZE},
"The buffer that is allocated to cache index and rows for BDB tables."
"The size of the cache to hold the SQL statements for the binary log during a transaction. If you often use big, multi-statement transactions you can increase this to get more performance.",
"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.",
"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.",
"The size of the buffer used for index blocks. Increase this to get better index handling (for all reads and multiple writes) to as much as you can afford; 64M on a 256M machine that mainly runs MySQL is quite common.",
"Don't use the fast sort index method to created index if the temporary file would get bigger than this. Note that this paramter is given in megabytes!",
"If this is not 0, then mysqld will use this value to reserve file descriptors to use with setrlimit(). If this value is 0 then mysqld will reserve max_connections*5 or max_connections + table_cache*2 (whichever is larger) number of files.",
"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.",
"When reading rows in sorted order after a sort, the rows are read through this buffer to avoid a disk seeks. If not set, then it's set to the value of record_buffer.",
