[mysqld]
########basic settings########
#user = mysql
#bind_address =
#autocommit = 0
socket = /tmp/mysqld.sock
character_set_server=utf8mb4
skip_name_resolve = 1
max_connections = 1000
max_connect_errors = 300
transaction_isolation = READ-COMMITTED
explicit_defaults_for_timestamp = 1
join_buffer_size = 134217728
tmp_table_size = 167108864
tmpdir = /tmp
max_allowed_packet = 16777216
sql_mode = "STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER"
interactive_timeout = 1800
wait_timeout = 1800
read_buffer_size = 16777216
read_rnd_buffer_size = 33554432
sort_buffer_size = 33554432
lower_case_table_names=1

########log settings########
log_error = error.log
slow_query_log = 1
slow_query_log_file = slow.log
log_queries_not_using_indexes = 1
log_slow_admin_statements = 1
log_slow_slave_statements = 1
log_throttle_queries_not_using_indexes = 10
expire_logs_days = 90
long_query_time = 2
min_examined_row_limit = 100

########replication settings########
master_info_repository = TABLE
relay_log_info_repository = TABLE
log_bin = bin.log
sync_binlog = 1
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_page_size = 16384
innodb_buffer_pool_size = 3G
innodb_buffer_pool_instances = 8
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_lru_scan_depth = 2000
innodb_lock_wait_timeout = 50
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
innodb_flush_method = O_DIRECT
innodb_file_format = Barracuda
innodb_file_format_max = Barracuda
#innodb_log_group_home_dir = /usr/local/redolog/
#innodb_undo_directory = /usr/local/undolog/
#innodb_undo_logs = 128
#innodb_undo_tablespaces = 3
innodb_flush_neighbors = 1
innodb_log_file_size = 2G
innodb_log_buffer_size = 16777216
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

[mysqld-5.7]
innodb_buffer_pool_dump_pct = 40
innodb_page_cleaners = 4
innodb_undo_log_truncate = 1
innodb_max_undo_log_size = 1G
innodb_purge_rseg_truncate_frequency = 128
binlog_gtid_simple_recovery=1
log_timestamps=system
transaction_write_set_extraction=MURMUR32
show_compatibility_56=on



[mysqld_multi]
mysqld = /usr/local/mysql/bin/mysqld_safe
mysqladmin = /usr/local/mysql/bin/mysqladmin
log =/var/log/mysqld_multi.log
user=root
password=lianyu2016

[mysqld1]
server-id = 111
datadir = /mnt/ipower365/lishu/mysqldata
socket = /mnt/ipower365/lishu/mysqldata/mysqld.sock
port = 3306
pid-file = /mnt/ipower365/lishu/mysqldata/mysqld.pid
log_error = error.log

[mysqld2]
server-id = 112
socket = /mnt/ipower365/lishu/mysqldata3307/mysqld.sock
port = 3307
pid-file = /mnt/ipower365/lishu/mysqldata3307/mysqld.pid
datadir = /mnt/ipower365/lishu/mysqldata3307
log_error = error.log

[mysqld3]
server-id = 113
socket = /mnt/ipower365/lishu/mysqldata3308/mysqld.sock
port = 3308
pid-file = /mnt/ipower365/lishu/mysqldata3308/mysqld.pid
datadir = /mnt/ipower365/lishu/mysqldata3308
log_error = error.log

二、多实例操作

1、查看状态

mysqld_multi report

#输出
Reporting MySQL servers
MySQL server from group: mysqld1 is running
MySQL server from group: mysqld2 is running
MySQL server from group: mysqld3 is running

2、关闭

说明：3表示my.cnf配置文件中mysqld3

mysqld_multi stop 3

3、启动

mysqld_multi start 3 

三、查看配置信息

1、查看某个mysqld实例配置传递信息

说明：没有加s的效果

my_print_defaults mysqld_multi mysqld3

#输出
--mysqld=/usr/local/mysql/bin/mysqld_safe
--mysqladmin=/usr/local/mysql/bin/mysqladmin
--log=/var/log/mysqld_multi.log
--user=root
--password=*****  #脚本错误，没有加参数s，传递的是5个*
--server-id=113
--socket=/mnt/ipower365/lishu/mysqldata3308/mysqld.sock
--port=3308
--pid-file=/mnt/ipower365/lishu/mysqldata3308/mysqld.pid
--datadir=/mnt/ipower365/lishu/mysqldata3308
--log_error=error.log

2、查看某个mysqld实例配置传递信息

说明：加s的效果

my_print_defaults mysqld_multi -s  mysqld3

#输出
--mysqld=/usr/local/mysql/bin/mysqld_safe
--mysqladmin=/usr/local/mysql/bin/mysqladmin
--log=/var/log/mysqld_multi.log
--user=root
--password=lianyu2016  #加s，显示的是s的。
--server-id=113
--socket=/mnt/ipower365/lishu/mysqldata3308/mysqld.sock
--port=3308
--pid-file=/mnt/ipower365/lishu/mysqldata3308/mysqld.pid
--datadir=/mnt/ipower365/lishu/mysqldata3308
--log_error=error.log

3、脚本路径

[root@aa ipower365]# which mysqld_multi
/usr/local/mysql/bin/mysqld_multi
[root@aa ipower365]# vim /usr/local/mysql/bin/mysqld_multi

 搜索：/my_print_defaults，看看后面参数是不是少了一个 -s，下面是正确的写法，如图：

4、查看日志文件

tailf /var/log/mysqld_multi.log 

mysql 多实例关闭、启动、查看状态

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