MySQL 5.6 & 5.7最优配置模板

Inside君整理了一份最新基于MySQL 5.6和5.7的配置文件模板，基本上可以说覆盖90%的调优选项，用户只需根据自己的服务器配置稍作修改即可，如InnoDB缓冲池的大小、IO能力（innodb_buffer_pool_size，innodb_io_capacity)。特别注意，这份配置文件不用修改，可以直接运行在MySQL 5.6和5.7的版本下，这里使用了小小的技巧，具体可看配置文件。如果配置参数存在问题，也可以及时反馈Inside君，我们一起成长。
触发Inside君做这件事情的原因是大部分网络上的MySQL配置文件都非常非常古老，大多都是基于MySQL 5.1的版本，这导致了绝大部分MySQL并没有运行在最优的环境，从而导致一些错误的使用，亦或是灾难性事故的发生，比如数据丢失，主从数据不一致等。而这些问题早在5.6版本及以后的版本中得到了解决。
最后，抛弃所谓的、陈旧的、错误的MySQL配置文件，面向一个崭新的高性能、高可靠、高可扩展MySQL时代，要做的就是下载这份配置文件并用于生产环境
[client]
user=david
password=88888888

[mysqld]
########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
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 = 6G
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 = 4G
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 = 2G
innodb_purge_rseg_truncate_frequency = 128
binlog_gtid_simple_recovery = 1
log_timestamps = system
transaction_write_set_extraction = MURMUR32
show_compatibility_56 = on

Inside君假设这台服务器的CPU为32 Core，内存为256G，存储为SSD，并且在16K块大小，IOPS可以达到20000。
新的配置文件中额外增加的参数有：
event_scheduler = 1 # 默认启用事件功能
binlog-rows-query-log-events = 1 # 开启RBR模式下SQL记录
log-bin-trust-function-creators = 1 # 避免复制出现一些错误
expire-logs-days = 90 # 提供保留二进制日志的功能
log-slave-updates = 1 # 默认slave开启二进制日志
innodb_stats_persistent_sample_pages = 64 # 提供更文档的优化器执行计
innodb_autoinc_lock_mode = 2 # 提供更好的INSERT并发性能
slave-rows-search-algorithms = 'INDEX_SCAN,HASH_SCAN' # 提供更好的从机回放算法
validate_password_policy = STRONG # 加强密码安全性
validate-password = FORCE_PLUS_PERMANENT # 加强密码安全性
loose_innodb_numa_interleave = 1 # 开启BP内存NUMA分配

本次配置文件最大的改动：
innodb_page_size = 16384
即使SSD存储也不推荐使用8K或者4K的页大小，这样业务可能会存在各种问题。另外，从线上线下的各种测试反馈来看，由于目前单行数据都超过500字节，小页性能不会有更好的表现，甚至可能会非常糟糕的表现。切身之痛，奔雷告知。