## my.cnf for MySQL 5.6
## 初始化mysql数据库命令：./scripts/mysql_install_db —user=mysql —defaults-file=/usr/local/mysql5.6/my.cnf
## 初次启动mysql数据库命令：./bin/mysqld_safe —defaults-file=/usr/local/mysql5.6/my.cnf —user=mysql —skip-grant-tables &
## 安全关闭mysql数据库命令：./bin/mysqladmin -h127.0.0.1 -uroot -P3307 -p shutdown
## 登录mysql数据库命令：./bin/mysql -h127.0.0.1 -uroot -P3307 -p
#
[client]
port = 3307
default_character_set=utf8
socket = /opt/data/mysql5.6/mysql.sock
#ssl-ca=/opt/data/mysql5.6/ca.pem
#ssl-cert=/opt/data/mysql5.6/client-cert.pem
#ssl-key=/opt/data/mysql5.6/client-key.pem

[mysql]
prompt=”\u@st01.dcdb \R:\m:\s [\d]> “
no-auto-rehash

[mysqld]
user = mysql
port = 3307
basedir = /usr/local/mysql5.6
datadir = /opt/data/mysql5.6
socket = /opt/data/mysql5.6/mysql.sock
pid-file = st01.dcdb.pid
character-set-server = utf8
skip_name_resolve = 1
##########################安全补丁############################
#local-infile = 0
#skip_symbolic_links=yes
#############################################################

sql_mode = NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
default_storage_engine = InnoDB

若你的MySQL数据库主要运行在境外，请务必根据实际情况调整本参数
default_time_zone = “+8:00”

sha256_password_private_key_path=private_key.pem
#sha256_password_public_key_path=public_key.pem
#ssl-ca=/opt/data/mysql5.6/ca.pem
#ssl-cert=/opt/data/mysql5.6/server-cert.pem
#ssl-key=/opt/data/mysql5.6/server-key.pem

open_files_limit = 65535
back_log = 1024
max_connections = 1000
max_connect_errors = 10000
table_open_cache = 3000
table_definition_cache = 3000
table_open_cache_instances = 64
thread_stack = 512K
external-locking = FALSE
max_allowed_packet = 32M
sort_buffer_size = 4M
join_buffer_size = 16M
thread_cache_size = 1500
interactive_timeout = 600
wait_timeout = 600
tmp_table_size = 32M
max_heap_table_size = 32M
slow_query_log = 1
#log_timestamps = SYSTEM
slow_query_log_file = /opt/data/mysql5.6/slow.log
log-error = /opt/data/mysql5.6/error.log
long_query_time = 1
log_queries_not_using_indexes = 1
log_throttle_queries_not_using_indexes = 60
min_examined_row_limit = 100
log_slow_admin_statements = 1
log_slow_slave_statements = 1
server-id = 201
log-bin = /opt/data/mysql5.6/binlog
sync_binlog = 1
binlog_cache_size = 4M
max_binlog_cache_size = 2G
max_binlog_size = 1G

注意：MySQL 8.0开始，binlog_expire_logs_seconds选项也存在的话，会忽略expire_logs_days选项
expire_logs_days = 7

master_info_repository = TABLE
relay_log_info_repository = TABLE
gtid_mode = on
enforce_gtid_consistency = 1
log_slave_updates
slave-rows-search-algorithms = ‘INDEX_SCAN,HASH_SCAN’
binlog_format = row
binlog_checksum = 1
relay_log_recovery = 1
relay-log-purge = 1
key_buffer_size = 32M
read_buffer_size = 8M
read_rnd_buffer_size = 4M
bulk_insert_buffer_size = 64M
myisam_sort_buffer_size = 128M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
lock_wait_timeout = 1800
explicit_defaults_for_timestamp = true
innodb_thread_concurrency = 0
innodb_sync_spin_loops = 100
innodb_spin_wait_delay = 30

transaction_isolation = READ-COMMITTED
#transaction_isolation = REPEATABLE-READ
#innodb_additional_mem_pool_size = 16M
innodb_buffer_pool_size = 1024M
innodb_buffer_pool_instances = 4
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_data_file_path = ibdata1:1G:autoextend
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 32M
innodb_log_file_size = 2G
innodb_log_files_in_group = 2
#innodb_max_undo_log_size = 4G
innodb_undo_directory = /opt/data/mysql5.6/undolog
innodb_undo_tablespaces = 32

根据您的服务器IOPS能力适当调整
# 一般配普通SSD盘的话，可以调整到 10000 - 20000
# 配置高端PCIe SSD卡的话，则可以调整的更高，比如 50000 - 80000
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
#innodb_flush_sync = 0
innodb_flush_neighbors = 0
innodb_write_io_threads = 8
innodb_read_io_threads = 8
innodb_purge_threads = 4
#innodb_page_cleaners = 4
innodb_open_files = 65535
innodb_max_dirty_pages_pct = 50
innodb_flush_method = O_DIRECT
innodb_lru_scan_depth = 4000
innodb_checksum_algorithm = crc32
innodb_lock_wait_timeout = 10
innodb_rollback_on_timeout = 1
innodb_print_all_deadlocks = 1
innodb_file_per_table = 1
innodb_online_alter_log_max_size = 4G
innodb_stats_on_metadata = 0
#innodb_undo_log_truncate = 1

some var for MySQL 5.7
#innodb_checksums = 1
#innodb_file_format = Barracuda
#innodb_file_format_max = Barracuda
query_cache_size = 0
query_cache_type = 0
innodb_undo_logs = 128

注意：MySQL 8.0.16开始删除该选项
#internal_tmp_disk_storage_engine = InnoDB

innodb_status_file = 1
#注意: 开启 innodb_status_output & innodb_status_output_locks 后, 可能会导致log-error文件增长较快
innodb_status_output = 0
innodb_status_output_locks = 0

performance_schema
performance_schema = 1
performance_schema_instrument = ‘%memory%=on’
performance_schema_instrument = ‘%lock%=on’

innodb monitor
#innodb_monitor_enable=”module_innodb”
#innodb_monitor_enable=”module_server”
#innodb_monitor_enable=”module_dml”
#innodb_monitor_enable=”module_ddl”
#innodb_monitor_enable=”module_trx”
#innodb_monitor_enable=”module_os”
#innodb_monitor_enable=”module_purge”
#innodb_monitor_enable=”module_log”
#innodb_monitor_enable=”module_lock”
#innodb_monitor_enable=”module_buffer”
#innodb_monitor_enable=”module_index”
#innodb_monitor_enable=”module_ibuf_system”
#innodb_monitor_enable=”module_buffer_page”
#innodb_monitor_enable=”module_adaptive_hash”

[mysqldump]
quick
max_allowed_packet = 32M