mysql配置优化

[mysqld]
port = 3306
socket = /data/mysql/mysql.sock

#使用容量比较大的分区来保存mysql数据
datadir = /data/mysql

default_storage_engine = InnoDB
performance_schema_max_table_instances = 400
table_definition_cache = 400
skip-external-locking
key_buffer_size = 512M
max_allowed_packet = 100G
table_open_cache = 2048
sort_buffer_size = 8M
net_buffer_length = 4K
read_buffer_size = 8M
read_rnd_buffer_size = 256K
myisam_sort_buffer_size = 128M
thread_cache_size = 256
query_cache_size = 256M
tmp_table_size = 256M
sql-mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

explicit_defaults_for_timestamp = true
#skip-name-resolve
max_connections = 500
max_connect_errors = 100
open_files_limit = 65535

#开启二进制日志记录
log-bin=mysql-bin
binlog_format=mixed
server-id = 1
expire_logs_days = 10

#开启慢查询日志
slow_query_log=1
slow-query-log-file=/data/mysql/mysql-slow.log
long_query_time=3
#log_queries_not_using_indexes=on
early-plugin-load = ""


innodb_data_home_dir = /data/mysql/innodb_dir
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = /data/mysql/innodb_dir
innodb_buffer_pool_size = 2048M
innodb_log_file_size = 1024M
innodb_log_buffer_size = 256M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50
innodb_max_dirty_pages_pct = 90
innodb_read_io_threads = 8
innodb_write_io_threads = 8

group_concat_max_len = 102400

#开启独立表空间，mysql5.7及以上其实已经默认开启
#innodb_file_per_table=1