【小记录】mysql5.7.*数据库配置记录

改动代码记录如下

[client]
#password    = your_password
port        = 3306
socket        = /tmp/mysql.sock

[mysqld]
port        = 3306
socket        = /tmp/mysql.sock
datadir = /xp/server/mysql/data
default_storage_engine = InnoDB
plugin_dir = /xp/server/mysql/lib/plugin
performance_schema_max_table_instances = 400
table_definition_cache = 400
skip-external-locking
key_buffer_size = 8M
max_allowed_packet = 16M
table_open_cache = 160
sort_buffer_size = 256K
net_buffer_length = 4K
read_buffer_size = 256K
read_rnd_buffer_size = 256K
myisam_sort_buffer_size = 4M
thread_cache_size = 32
query_cache_size = 4M
tmp_table_size = 8M
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

log-bin=mysql-bin
log-error=/xp/server/mysql/data/mysql-error.log
binlog_format=mixed
server-id = 1
expire_logs_days = 10
slow_query_log=1
slow-query-log-file=/xp/server/mysql/data/mysql-slow.log
long_query_time=3
#log_queries_not_using_indexes=on
early-plugin-load = ""


innodb_data_home_dir = /xp/server/mysql/data
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = /xp/server/mysql/data
innodb_buffer_pool_size = 512M
innodb_log_file_size = 5M
innodb_log_buffer_size = 16M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50
innodb_max_dirty_pages_pct = 90
innodb_read_io_threads = 4
innodb_write_io_threads = 4

[mysqldump]
quick
max_allowed_packet = 500M

[mysql]
no-auto-rehash

[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 512K
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

为什么改配置？

因为小机器（1-2G）数据库配置设置不当的话，占用的内存还是挺多的，合理设置将可以减少内存占用（我看着网上学的）， 因为我没钱买高配置的服务器而已！不然谁改这些啊！

改动的地方很少，你们就参照我的这个改就行了，今天的小记录就到此结束！再见！