前言
1.单机使用也没问题
2.从库，把server-id改了就行，其他一样

cat /etc/my.cnf

#--------------------------gtid模式主库配置------------------------
[client]
port = 3306
socket = /data/tmp/mysql.sock
default-character-set = utf8mb4


##  ---------------- Basic ----------------
[mysqld]
port = 3306
socket = /data/tmp/mysql.sock
basedir = /usr/local/mysql/
datadir = /data/mysql
pid-file = /data/tmp/mysql.pid
log-error=/data/tmp/mysql.err
tmpdir = /data//tmp
user = mysql
character_set_server = utf8mb4
transaction_isolation = READ-COMMITTED
default-storage-engine = InnoDB
explicit_defaults_for_timestamp = 1
lower_case_table_names = 1
event_scheduler = 1
skip-external-locking

#  ---------------- Connection/File/Table ----------------
interactive_timeout = 1800
wait_timeout = 1800
lock_wait_timeout = 1800
skip_name_resolve = 1
max_connections = 1000
max_user_connections = 256
max_connect_errors = 20000
back_log = 600
open_files_limit = 8192
table_open_cache = 4096
table_definition_cache = 4096
table_open_cache_instances = 64

#  ---------------- Session Buffer Cache ----------------
query_cache_size = 0
query_cache_type = 0
max_allowed_packet = 64M
read_buffer_size = 16M
read_rnd_buffer_size = 16M
sort_buffer_size = 16M
tmp_table_size = 64M
join_buffer_size = 32M
thread_cache_size = 64
thread_stack = 256K

#  ---------------- Thread Pool ----------------
thread_handling = pool-of-threads
thread_pool_oversubscribe = 3
thread_pool_size = 24
extra_max_connections = 8
extra_port = 33333

#  ---------------- Binlog ----------------
log-bin = /data/tmp/mysql-bin
log-bin-index = /data/tmp/mysql-bin.index
binlog_format = row
expire_logs_days = 7
sync_binlog = 1
binlog_cache_size = 8M
max_binlog_cache_size = 2048M
max_binlog_size = 1024M
binlog_rows_query_log_events = 1

#  ---------------- InnoDB ----------------
innodb_buffer_pool_size = 18G
innodb_buffer_pool_instances = 8
innodb_online_alter_log_max_size = 1024M
innodb_thread_concurrency = 8
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
innodb_sort_buffer_size = 64M
innodb_page_size = 16K
innodb_open_files = 4096
innodb_flush_log_at_trx_commit = 1
innodb_read_io_threads = 8
innodb_write_io_threads = 8
innodb_purge_threads = 4
innodb_max_dirty_pages_pct = 80
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_lock_wait_timeout = 10
innodb_rollback_on_timeout = 1
innodb_lru_scan_depth = 4096
innodb_flush_method = O_DIRECT
innodb_checksum_algorithm = CRC32
innodb_file_per_table = 1
innodb_file_format = Barracuda
innodb_file_format_max = Barracuda
innodb_flush_neighbors = 0
innodb_large_prefix = 1
innodb_print_all_deadlocks = 1
innodb_stats_persistent_sample_pages = 64
innodb_autoinc_lock_mode = 2
innodb_sync_spin_loops = 100
innodb_spin_wait_delay = 30
innodb_stats_on_metadata = 0
loose_innodb_numa_interleave = 1
innodb_buffer_pool_dump_pct = 40
innodb_page_cleaners = 4
innodb_undo_log_truncate = 1
innodb_max_undo_log_size = 2G
innodb_purge_rseg_truncate_frequency = 128
slave-parallel-type = LOGICAL_CLOCK
slave-parallel-workers = 16
slave_preserve_commit_order = 1
slave_transaction_retries = 128
binlog_gtid_simple_recovery = 1
log_timestamps = system
show_compatibility_56 = 1

#  ---------------- Redo/Undo ----------------
innodb_log_buffer_size = 16M
innodb_log_file_size = 1024M
innodb_log_files_in_group = 3
innodb_log_group_home_dir = /data/mysql/log/redo
innodb_undo_logs = 128
innodb_undo_tablespaces = 3
innodb_undo_directory = /data/mysql/log/undo


#  ---------------- Replication ----------------
server-id = 1
master_info_repository = TABLE
relay_log_info_repository = TABLE
gtid_mode = on
enforce_gtid_consistency = 1
log_slave_updates = 1
relay_log = /data/mysql/relay.log
relay_log_recovery = 1
slave_skip_errors = ddl_exist_errors
slave-rows-search-algorithms = 'INDEX_SCAN,HASH_SCAN'

[mysqldump]
quick
max_allowed_packet=16M
single-transaction
 
[mysql]
no-auto-rehash
 
[mysqlhotcopy]
interactive-timeout