mysql配置优化

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[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 <br>#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