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
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
