探讨在 MySQL 中 my.cnf 文件 的使用实例

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[client]

default-character-set     = utf8mb4

port             = PORT

socket             = /srv/myPORT/run/mysql.sock

[mysqld]

user                         = mysql

port             = PORT

extra-port          = 1PORT

character_set_server         = utf8mb4

server_id           = SERVER_ID

socket            = /srv/myPORT/run/mysql.sock

basedir            = /opt/percona-server

datadir           = /srv/myPORT/data

log-error           = /srv/myPORT/log/alert.log

pid-file           = /srv/myPORT/run/mysql.pid

log_slave_updates      = 1

log-bin            = /srv/myPORT/log/mysql-bin

binlog_format         = row

binlog_cache_size       = 2M

max_binlog_cache_size     = 4G

max_binlog_size        = 1G

expire_logs_days        = 7

relay-log           = /srv/myPORT/log/relay-bin

relay-log-info-file      = /srv/myPORT/log/relay-log.info

relay-log-index        = /srv/myPORT/log/relay-log.index

master-info-file       = /srv/myPORT/log/master.info

relay-log-recovery      = true

sync-relay-log-info     = 1

explicit_defaults_for_timestamp

key_buffer_size        = 2M

sort_buffer_size       = 2M

read_buffer_size       = 2M

read_rnd_buffer_size     = 16M

join_buffer_size       = 2M

thread_cache_size       = 1024

query_cache_size        = 1M

query_cache_limit       = 1M

query_cache_min_res_unit    = 2k

table_open_cache       = 2048

open_files_limit       = 65535

back_log                    = 3000

max_connections       = 4000

max_user_connections     = 2500

max_connect_errors           = 100

max_allowed_packet      = 512M

thread_stack         = 192k

default-storage-engine        = INNODB

transaction_isolation        = READ-COMMITTED

tmp_table_size        = 16M

max_heap_table_size     = 64M

bulk_insert_buffer_size    = 64M

long_query_time       = 0.5

slow_query_log        = on

slow_query_log_file          = /srv/myPORT/log/slow.log

skip-name-resolve

innodb_buffer_pool_size       = 10G

innodb_data_file_path         = ibdata1:2G:autoextend

innodb_file_io_threads       = 24

innodb_purge_threads     = 12

innodb_read_io_threads    = 24

innodb_write_io_threads    = 24

innodb_thread_concurrency   = 24

innodb_buffer_pool_instances = 8

innodb_flush_log_at_trx_commit= 1

innodb_log_buffer_size    = 16M

innodb_log_file_size        = 2G

innodb_log_files_in_group    = 2

innodb_max_dirty_pages_pct    = 75

innodb_lock_wait_timeout   = 50

innodb_file_per_table        = 1

thread_handling        = pool-of-threads

thread_pool_idle_timeout    = 180

thread_pool_max_threads    = 5000

thread_pool_size             = 24

thread_pool_oversubscribe    = 10

thread_pool_stall_limit    = 500

[mysqldump]

quick

max_allow_packet            = 64M

[mysql]

no-auto-rehash

[mysqlhotcopy]

interactive-timeout

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