前言

MYSQL是一种开放源代码关系型数据库管理系统(RDBMS)，使用最常用的数据库管理语言-结构化查询语言(SQL)进行数据库管理。MySQL因为其速度、可靠性和适应性而备受关注。成为当前最流行的数据库之一。

在安装mysql的过程中，可能让人感觉困扰，就是不知道mysql的配置参数如何设置，设置成多少才合情合理。分享一个my.cnf的自动生成工具，只需要填写几个选项，就生成符合你要求的my.cnf配置文件。

一、工具

1.1 工具地址

http://imysql.com/my-cnf-wizard.html

1.2 示例分享

1.2.1 配置文件

1、填写的选项

2、生成配置文件示例​## my.cnf for MySQL 5.7/8.0

​

## 本配置文件主要适用于MySQL 5.7/8.0版本

#

[client]

port = 3306

socket = /alidata/mysql/mysql.sock

​

[mysql]

prompt="\\u@mysqldb \R:\m:\s [\d]> "

no-auto-rehash

​

[mysqld]

user = mysql

port = 3306

basedir =

datadir = /alidata/mysql

socket = /alidata/mysql/mysql.sock

pid-file = mysqldb.pid

character-set-server = utf8mb4

skip_name_resolve = 1

​

#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"

​

open_files_limit = 65535

back_log = 1024

max_connections = 3000

max_connect_errors = 1000000

table_open_cache = 800

table_definition_cache = 800

table_open_cache_instances = 64

thread_stack = 512K

external-locking = FALSE

max_allowed_packet = 32M

sort_buffer_size = 4M

join_buffer_size = 4M

thread_cache_size = 4500

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 = /alidata/mysql/slow.log

log-error = /alidata/mysql/error.log

long_query_time = 0.1

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 = 3306

log-bin = /alidata/mysql/mybinlog

sync_binlog = 1

binlog_cache_size = 4M

max_binlog_cache_size = 2G

max_binlog_size = 1G

expire_logs_days = 15

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 = 3600

explicit_defaults_for_timestamp = 1

innodb_thread_concurrency = 0

innodb_sync_spin_loops = 100

innodb_spin_wait_delay = 30

​

transaction_isolation = REPEATABLE-READ

#innodb_additional_mem_pool_size = 16M

innodb_buffer_pool_size = 45875M

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 = /alidata/mysql/undolog

innodb_undo_tablespaces = 95

​

# 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

internal_tmp_disk_storage_engine = InnoDB

innodb_stats_on_metadata = 0

​

# 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

​

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

三、小结

简单省力的工具，非常简单！非常规范！你还在为mysql配置而烦心吗？赶紧试试吧！

感兴趣的朋友欢迎关注转发~