my.conf

 my.cnf 文件中出现的配置选项：

  

[mysqld] 节：该节包含了 MySQL 服务器的核心配置选项。
socket = /path/to/mysql.sock：指定 MySQL 服务器的套接字文件路径。
port = 3306：指定 MySQL 服务器的端口号。
basedir = /path/to/mysql-installation-directory：指定 MySQL 安装目录的路径。
datadir = /path/to/data/directory：指定 MySQL 数据目录的路径。
innodb_data_file_path = ibdata1:10M:autoextend:max:512M：指定 InnoDB 存储引擎的数据文件路径。
innodb_log_file_size = 5M：指定 InnoDB 存储引擎的日志文件大小。
max_connections = 100：指定 MySQL 服务器允许的最大连接数。
sort_buffer_size = 256K：指定 MySQL 服务器的排序缓冲区大小。
join_buffer_size = 1M：指定 MySQL 服务器的连接缓冲区大小。
[client] 节：该节包含了客户端的配置选项。
socket = /path/to/mysql.sock：指定客户端连接 MySQL 服务器的套接字文件路径。
[mysql_upgrade] 节：该节包含了升级 MySQL 服务器的配置选项。
user = root：指定升级 MySQL 服务器的用户名。
password = password：指定升级 MySQL 服务器的密码。

[mysqld]
federated
########basic settings########
server-id = 11 
port = 3306
user = mysql
bind_address = 10.166.224.32
#autocommit = 0
character_set_server=utf8mb4
skip_name_resolve = 1
max_connections = 800
max_connect_errors = 1000
datadir = /data/mysql_data
#datadir = /usr/local/mysql-5.6.27-linux-glibc2.5-x86_64/data 
transaction_isolation = READ-COMMITTED
explicit_defaults_for_timestamp = 1
join_buffer_size = 134217728
tmp_table_size = 67108864
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
########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 = 8192
innodb_buffer_pool_size = 2G
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 = 5
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 = /redolog/
#innodb_undo_directory = /undolog/
innodb_undo_logs = 128
innodb_undo_tablespaces = 3
innodb_flush_neighbors = 1
innodb_log_file_size = 128M
innodb_log_buffer_size = 16777216
innodb_purge_threads = 1
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_purge_threads = 4
innodb_undo_log_truncate = 1
innodb_max_undo_log_size = 2G
innodb_purge_rseg_truncate_frequency = 128
binlog_gtid_simple_recovery=1
log_timestamps=system
transaction_write_set_extraction=MURMUR32
#binlog_checksum=NONE # only for group replication
#group replication setting
#plugin_load=group_replication.so
#loose_group_replication_group_name=e5720089-6b00-11e5-b248-fa163e30f9a2
#loose_group_replication_start_on_boot=1
#loose_group_replication_recovery_user='rpl_user'
#loose_group_replication_recovery_password='rpl_pass'
show_compatibility_56=on


[mysqld_multi]
mysqld = mysqld_safe
log=/usr/local/mysql/mysql_multi.log

[mysqld1]
server-id=111
basedir=/usr/local/mysql
datadir=/data1
port=3307
socket=/tmp/mysql.sock1

[mysqld2]
server-id=222
basedir=/usr/local/mysql
datadir=/data2
port=3308
socket=/tmp/mysql.sock2

[mysqld3]
server-id=333
basedir=/usr/local/mysql56
datadir=/data3
port=3309
socket=/tmp/mysql.sock3