.net连接MySql:Unable to connect to any of the specified MySQL hosts
MySql.Data.MySqlClient.MySqlException Unable to connect to any of the specif
我的问题是my.cnf配置错误,从官方网站重新下载mysql,把它的My.cnf默认文件覆盖就OK了,这里我上传一份我的MYSQL5.1的my.cnf
- # Example MySQL config file for large systems.
- #
- # This is for a large system with memory = 512M where the system runs mainly
- # MySQL.
- #
- # MySQL programs look for option files in a set of
- # locations which depend on the deployment platform.
- # You can copy this option file to one of those
- # locations. For information about these locations, see:
- # http://dev.mysql.com/doc/mysql/en/option-files.html
- #
- # In this file, you can use all long options that a program supports.
- # If you want to know which options a program supports, run the program
- # with the "--help" option.
- # The following options will be passed to all MySQL clients
- [client]
- #password = your_password
- port = 3306
- socket = /tmp/mysql.sock
- # Here follows entries for some specific programs
- # The MySQL server
- [mysqld]
- port = 3306
- socket = /tmp/mysql.sock
- skip-locking
- key_buffer_size = 256M
- max_allowed_packet = 1M
- table_open_cache = 256
- sort_buffer_size = 1M
- read_buffer_size = 1M
- read_rnd_buffer_size = 4M
- myisam_sort_buffer_size = 64M
- thread_cache_size = 8
- query_cache_size= 16M
- # Try number of CPU's*2 for thread_concurrency
- thread_concurrency = 8
- # Don't listen on a TCP/IP port at all. This can be a security enhancement,
- # if all processes that need to connect to mysqld run on the same host.
- # All interaction with mysqld must be made via Unix sockets or named pipes.
- # Note that using this option without enabling named pipes on Windows
- # (via the "enable-named-pipe" option) will render mysqld useless!
- #
- #skip-networking
- # Replication Master Server (default)
- # binary logging is required for replication
- log-bin=mysql-bin
- # binary logging format - mixed recommended
- binlog_format=mixed
- # required unique id between 1 and 2^32 - 1
- # defaults to 1 if master-host is not set
- # but will not function as a master if omitted
- server-id = 1
- # Replication Slave (comment out master section to use this)
- #
- # To configure this host as a replication slave, you can choose between
- # two methods :
- #
- # 1) Use the CHANGE MASTER TO command (fully described in our manual) -
- # the syntax is:
- #
- # CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
- # MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
- #
- # where you replace <host>, <user>, <password> by quoted strings and
- # <port> by the master's port number (3306 by default).
- #
- # Example:
- #
- # CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
- # MASTER_USER='joe', MASTER_PASSWORD='secret';
- #
- # OR
- #
- # 2) Set the variables below. However, in case you choose this method, then
- # start replication for the first time (even unsuccessfully, for example
- # if you mistyped the password in master-password and the slave fails to
- # connect), the slave will create a master.info file, and any later
- # change in this file to the variables' values below will be ignored and
- # overridden by the content of the master.info file, unless you shutdown
- # the slave server, delete master.info and restart the slaver server.
- # For that reason, you may want to leave the lines below untouched
- # (commented) and instead use CHANGE MASTER TO (see above)
- #
- # required unique id between 2 and 2^32 - 1
- # (and different from the master)
- # defaults to 2 if master-host is set
- # but will not function as a slave if omitted
- #server-id = 2
- #
- # The replication master for this slave - required
- #master-host = <hostname>
- #
- # The username the slave will use for authentication when connecting
- # to the master - required
- #master-user = <username>
- #
- # The password the slave will authenticate with when connecting to
- # the master - required
- #master-password = <password>
- #
- # The port the master is listening on.
- # optional - defaults to 3306
- #master-port = <port>
- #
- # binary logging - not required for slaves, but recommended
- #log-bin=mysql-bin
- # Uncomment the following if you are using InnoDB tables
- #innodb_data_home_dir = /usr/local/mysql/data
- #innodb_data_file_path = ibdata1:10M:autoextend
- #innodb_log_group_home_dir = /usr/local/mysql/data
- # You can set .._buffer_pool_size up to 50 - 80 %
- # of RAM but beware of setting memory usage too high
- #innodb_buffer_pool_size = 256M
- #innodb_additional_mem_pool_size = 20M
- # Set .._log_file_size to 25 % of buffer pool size
- #innodb_log_file_size = 64M
- #innodb_log_buffer_size = 8M
- #innodb_flush_log_at_trx_commit = 1
- #innodb_lock_wait_timeout = 50
- [mysqldump]
- quick
- max_allowed_packet = 16M
- [mysql]
- no-auto-rehash
- # Remove the next comment character if you are not familiar with SQL
- #safe-updates
- [myisamchk]
- key_buffer_size = 128M
- sort_buffer_size = 128M
- read_buffer = 2M
- write_buffer = 2M
- [mysqlhotcopy]
- interactive-timeout
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