重点：配置GNR时需要所有的GNR以[ mysqld xxx]的格式命名，否则会报找到GNR的错误

企业建站必须是能够以充分展现企业形象为主要目的，是企业文化与产品对外扩展宣传的重要窗口，一个合格的网站不仅仅能为公司带来巨大的互联网上的收集和信息发布平台，成都创新互联面向各种领域：成都楼梯护栏等成都网站设计公司、营销型网站建设解决方案、网站设计等建站排名服务。

准备Mysqld_multi配置文件加入多实例的配置信息

指定GNR启动实例(不要指定MYSQLD这个关键词)

mysqld_multi start 3308

指定端口和SOCK文件关闭实例

mysqladmin -uroot -p123456 -P3307 -S/mydata/data2/mysql.sock shutdown

指定连接实例

mysql -uroot -p123456 -S/mydata/data2/mysql.sock

指定启动实例

mysqld_multi start mysqld3307

如下为多实例的配置文件

[client]

#socket = /mydata/data/mysql.sock

[mysqld_multi]

log=/mydata/mysqld_multi.log

#mysqld=/usr/sbin/mysqld

user=mysql

#basedir = /usr

#sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

[mysqld3306]

########basic settings########

user=mysql

server-id = 333

port = 3306

socket=/mydata/data/master1.sock

#skip-grant-tables

character_set_server=utf8

skip_name_resolve = 1

max_connections = 2000

max_connect_errors = 1000

datadir = /mydata/data

explicit_defaults_for_timestamp = 1

join_buffer_size = 134217728

tmp_table_size = 67108864

tmpdir = /tmp

lower_case_table_names=1

log_error = error.log

########replication settings########

master_info_repository = TABLE

relay_log_info_repository = TABLE

log_bin = bin.log

gtid_mode = on

enforce_gtid_consistency = 1

log_slave_updates

binlog_format = row

relay_log = relay.log

relay_log_recovery = 1

#binlog_gtid_simple_recovery = 1

slave_skip_errors = ddl_exist_errors

########innodb settings########

innodb_buffer_pool_size = 1G

innodb_buffer_pool_instances = 8

innodb_lock_wait_timeout = 50

innodb_log_file_size = 500M

innodb_purge_threads = 4

innodb_large_prefix = 1

innodb_thread_concurrency = 64

innodb_print_all_deadlocks = 1

innodb_strict_mode = 1

innodb_sort_buffer_size = 67108864

########semi sync replication settings########

#plugin_dir=/usr/local/mysql/lib/plugin

#plugin_load = "rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"

loose_rpl_semi_sync_master_enabled = 1

loose_rpl_semi_sync_slave_enabled = 1

loose_rpl_semi_sync_master_timeout = 5000

[mysqld3307]

########basic settings########

user=mysql

server-id = 789

port = 3307

skip-grant-tables

socket=/mydata/data2/master2.sock

character_set_server=utf8

skip_name_resolve = 1

max_connections = 2000

max_connect_errors = 1000

datadir = /mydata/data2

explicit_defaults_for_timestamp = 1

join_buffer_size = 134217728

tmp_table_size = 67108864

tmpdir = /tmp

lower_case_table_names=1

log_error = error.log

########replication settings########

master_info_repository = TABLE

relay_log_info_repository = TABLE

log_bin = bin.log

gtid_mode = on

enforce_gtid_consistency = 1

log_slave_updates

binlog_format = row

relay_log = relay.log

relay_log_recovery = 1

#binlog_gtid_simple_recovery = 1

slave_skip_errors = ddl_exist_errors

########innodb settings########

innodb_buffer_pool_size = 1G

innodb_buffer_pool_instances = 8

innodb_lock_wait_timeout = 50

innodb_log_file_size = 500M

innodb_purge_threads = 4

innodb_large_prefix = 1

innodb_thread_concurrency = 64

innodb_print_all_deadlocks = 1

innodb_strict_mode = 1

innodb_sort_buffer_size = 67108864

########semi sync replication settings########

#plugin_dir=/usr/local/mysql/lib/plugin

#plugin_load = "rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"

loose_rpl_semi_sync_master_enabled = 1

loose_rpl_semi_sync_slave_enabled = 1

loose_rpl_semi_sync_master_timeout = 5000

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