[mysql]
prompt = [\\u@\\h][\\d]>\\_
[mysqld]
# basic settings #
user = mysql
sql_mode = "STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER"
autocommit = 1
character_set_server=utf8mb4
transaction_isolation = READ-COMMITTED
explicit_defaults_for_timestamp = 1
max_allowed_packet = 16777216
event_scheduler = 1 #5.1版本是開啓的，5.7默認關閉，週期任務計劃線程。
# connection #
interactive_timeout = 1800
wait_timeout = 1800
lock_wait_timeout = 1800 ##元數據鎖等待超時時間
skip_name_resolve = 1 ##只允許IP授權，跳過域名
max_connections = 512
max_connect_errors = 1000000 ##連接請求被阻塞，flush hosts解決，默認值100
# table cache performance settings
table_open_cache = 4096 ##show status like "open_tables"; 值大，調大。
table_definition_cache = 4096 #
table_open_cache_instances = 128 #涉及到鎖
# session memory settings #
read_buffer_size = 16M
read_rnd_buffer_size = 32M
sort_buffer_size = 32M
tmp_table_size = 64M
join_buffer_size = 128M
thread_cache_size = 64 #有大量新連接，可以調大此值來提高性能。
# 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 #管理命令執行慢的也放到慢日誌裏
log_slow_slave_statements = 1 #從庫上執行的慢查詢也放到慢日誌
log_throttle_queries_not_using_indexes = 10 #1分鐘不走索引的只記錄10條
expire_logs_days = 90
long_query_time = 2 #可以設置成0.5
min_examined_row_limit = 100 ##低於100行的慢日誌不記錄
binlog-rows-query-log-events = 1 ##binlog記錄執行語句
log-bin-trust-function-creators = 1 ##設置爲0，數據更安全，uuid函數能執行，不會報錯，但是binlog是row格式，設置爲1避免報錯信息。
expire-logs-days = 90
log-slave-updates = 1
# innodb settings #
innodb_page_size = 16384
innodb_buffer_pool_size = 160G
innodb_buffer_pool_instances = 16 #提高併發，減少不同線程對內存的爭用。
innodb_buffer_pool_load_at_startup = 1 #開啓加載熱數據，5.7.7以後默認開啓
innodb_buffer_pool_dump_at_shutdown = 1 #關閉數據庫備份熱數據
innodb_lru_scan_depth = 4096
innodb_lock_wait_timeout = 5 #鎖超時
innodb_io_capacity = 10000 #根據情況設置，SSD 4000+
innodb_io_capacity_max = 20000
innodb_flush_method = O_DIRECT
innodb_file_format = Barracuda #innodb文件格式，默認也是Barracuda,後期這個參數將被捨棄
innodb_file_format_max = Barracuda
innodb_undo_logs = 128 #回滾段，innodb_rollback_segments的別名。默認128
innodb_undo_tablespaces = 3 #減小undo表空間的大小
innodb_flush_neighbors = 0 #ssd防止性能抖動，機械盤設置爲1
innodb_log_file_size = 17179869184 #16G
innodb_log_files_in_group = 2
innodb_log_buffer_size = 16777216 #16M
innodb_purge_threads = 4
innodb_large_prefix = 1
innodb_thread_concurrency = 64 #根據cpu設置最優性能
innodb_print_all_deadlocks = 1 #打印死鎖信息
innodb_strict_mode = 1 #嚴格模式，類似sql_mode
innodb_sort_buffer_size = 67108864
innodb_write_io_threads = 16
innodb_read_io_threads = 16
innodb_file_per_table = 1
innodb_stats_persistent_sample_pages = 64
innodb_autoinc_lock_mode = 2
innodb_online_alter_log_max_size=1G #online DDL
innodb_open_files=4096
# replication settings #
master_info_repository = TABLE
relay_log_info_repository = TABLE
sync_binlog = 1
gtid_mode = on
enforce_gtid_consistency = 1
log_slave_updates
binlog_format = ROW
binlog_rows_query_log_events = 1
relay_log = relay.log
relay_log_recovery = 1
slave_skip_errors = ddl_exist_errors
slave-rows-search-algorithms = ‘INDEX_SCAN,HASH_SCAN‘
# semi sync replication settings #
plugin_load = "validate_password.so;rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"
rpl_semi_sync_master_enabled = 1
rpl_semi_sync_master_timeout = 3000
rpl_semi_sync_slave_enabled = 1
# password plugin #
validate_password_policy=STRONG
validate-password=FORCE_PLUS_PERMANENT
[mysqld-5.6]
# metalock performance settings
metadata_locks_hash_instances=64
[mysqld-5.7]
# new innodb settings #
loose_innodb_numa_interleave=1
innodb_buffer_pool_dump_pct = 40
innodb_page_cleaners = 16
innodb_undo_log_truncate = 1
innodb_max_undo_log_size = 2G
innodb_purge_rseg_truncate_frequency = 128
# new replication settings #
slave-parallel-type = LOGICAL_CLOCK
slave-parallel-workers = 16
slave_preserve_commit_order=1
slave_transaction_retries=128
# other change settings #
binlog_gtid_simple_recovery=1
log_timestamps=system
show_compatibility_56=on
只是參考，要根據業務設置參數。
https://github.com/jdaaaaaavid/mysql_best_configuration/blob/master/my.cnf
