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|
/*
-- Query: show global variables
-- Date: 2021-06-09 17:32
-- 更新时间: 2021-06-10
*/
('back_log','151');
('basedir','D:\\mysql-8.0.25-winx64\\');
('big_tables','OFF');
('binlog_cache_size','32768');
('binlog_checksum','CRC32');
# 设置为CRC32后，binglog文件中每个 event 都会有CRC32 的值
# binlog_checksum支持NONE（disabled）和CRC32这两个值。默认值是CRC32。你不能在一个事务中改变binlog_checksum的值。
# 修改方式: set global binlog_checksum=NONE;
('binlog_direct_non_transactional_updates','OFF');
('binlog_encryption','OFF');
('binlog_error_action','ABORT_SERVER');
('binlog_expire_logs_seconds','2592000');
('innodb_flush_log_at_trx_commit','1');
# redo log 用于保证 crash-safe 能力。innodb_flush_log_at_trx_commit 这个参数设置成 1 的时候，表示每次事务
# 的 redo log都直接持久化到磁盘,这样可以保证 MySQL 异常重启之后数据不丢失。
('binlog_format','ROW');
# binlog_format有三种格式: statement，row, mixed
# statement: binlog里面会记录SQL语句的原文，如果SQL语句有limit，则可能会因为主、从的查询索引不一样导致主从数据不一致
# row: binlog里面记录了真实修改行的主键id,不会出现主从不一致的情况，但在某些场景下会耗费磁盘空间、I/O资源，适合数据恢复场景
# mixed: 意思是，MySQL自己会判断这条SQL语句是否可能引起主备不一致,如果有可能，就用row格式，否则就用statement格式。
('sync_binlog','1');
# 0：默认值。事务提交后，将二进制日志从缓冲写入磁盘，但是不进行刷新操作（fsync()），此时只是写入了操
# 作系统缓冲，若操作系统宕机则会丢失部分二进制日志。
# 1：事务提交后，将二进制文件写入磁盘并立即执行刷新操作，相当于是同步写入磁盘，不经过操作系统的缓存。
# N：每写N次操作系统缓冲就执行一次刷新操作
('slow_query_log','OFF');
# 慢查询开关,set global slow_query_log='ON'开启;
('sql_safe_updates','OFF');
# set global sql_safe_updates=1; #开启命令
# SET SQL_SAFE_UPDATES = 0; #关闭命令
('log_queries_not_using_indexes','OFF');
# 未使用索引的查询是否记录到慢查询日志中
('log_raw','OFF');
('log_slave_updates','ON');
# 表示备库执行 relay log 后生成 binlog
('log_slow_admin_statements','OFF');
('log_slow_extra','OFF');
('log_slow_slave_statements','OFF');
('log_statements_unsafe_for_binlog','ON');
('log_throttle_queries_not_using_indexes','0');
('long_query_time','10.000000');
# 慢查询时间，默认为10秒
('low_priority_updates','OFF');
('lower_case_file_system','ON');
('lower_case_table_names','1');
('master_info_repository','TABLE');
('master_verify_checksum','OFF');
('max_allowed_packet','67108864');
# ERROR 2006 (HY000): MySQL server has gone away No connection. Trying to reconnect...
# 将此值设置大些: set global max_allowed_packet=100M
tx_isolation
#事务隔离级别
('innodb_io_capacity','200');
# 根据磁盘iops设置
('binlog_group_commit_sync_delay','0');
('binlog_group_commit_sync_no_delay_count','0');
('binlog_gtid_simple_recovery','ON');
('binlog_max_flush_queue_time','0');
('binlog_order_commits','ON');
('binlog_rotate_encryption_master_key_at_startup','OFF');
('binlog_row_event_max_size','8192');
('binlog_row_image','FULL');
# binlog中是否包含所有字段的值。如果把 binlog_row_image 设置为 MINIMAL，则只会记录必要的信息，
('binlog_row_metadata','MINIMAL');
('binlog_row_value_options','');
('binlog_rows_query_log_events','OFF');
('binlog_stmt_cache_size','32768');
('binlog_transaction_compression','OFF');
('binlog_transaction_compression_level_zstd','3');
('binlog_transaction_dependency_history_size','25000');
('binlog_transaction_dependency_tracking','COMMIT_ORDER');
('block_encryption_mode','aes-128-ecb');
('bulk_insert_buffer_size','8388608');
('check_proxy_users','OFF');
('completion_type','NO_CHAIN');
('concurrent_insert','AUTO');
('connect_timeout','10');
('core_file','OFF');
('create_admin_listener_thread','OFF');
('cte_max_recursion_depth','1000');
('default_password_lifetime','0');
('default_storage_engine','InnoDB');
('default_table_encryption','OFF');
('default_tmp_storage_engine','InnoDB');
('default_week_format','0');
('delay_key_write','ON');
('delayed_insert_limit','100');
('delayed_insert_timeout','300');
('delayed_queue_size','1000');
('disconnect_on_expired_password','ON');
('div_precision_increment','4');
('end_markers_in_json','OFF');
('enforce_gtid_consistency','OFF');
('eq_range_index_dive_limit','200');
('event_scheduler','ON');
('expire_logs_days','0');
('explicit_defaults_for_timestamp','ON');
('flush','OFF');
('flush_time','0');
('foreign_key_checks','ON');
('ft_max_word_len','84');
('ft_min_word_len','4');
('ft_query_expansion_limit','20');
('ft_stopword_file','(built-in)');
('general_log','OFF');
('general_log_file','D:\\mysql-8.0.25-winx64\\data\\DESKTOP-D4DB1RU.log');
('generated_random_password_length','20');
('group_concat_max_len','1024');
('group_replication_consistency','EVENTUAL');
('gtid_executed','');
('gtid_executed_compression_period','0');
('gtid_mode','OFF');
('have_compress','YES');
('have_dynamic_loading','YES');
('have_geometry','YES');
('have_openssl','YES');
('have_profiling','YES');
('have_query_cache','NO');
('have_rtree_keys','YES');
('have_statement_timeout','YES');
('have_symlink','DISABLED');
('histogram_generation_max_mem_size','20000000');
('host_cache_size','279');
('hostname','DESKTOP-D4DB1RU');
('information_schema_stats_expiry','86400');
('innodb_adaptive_flushing','ON');
('innodb_adaptive_flushing_lwm','10');
('innodb_adaptive_hash_index','ON');
('innodb_adaptive_hash_index_parts','8');
('innodb_adaptive_max_sleep_delay','150000');
('innodb_api_bk_commit_interval','5');
('innodb_api_disable_rowlock','OFF');
('innodb_api_enable_binlog','OFF');
('innodb_api_enable_mdl','OFF');
('innodb_api_trx_level','0');
('innodb_autoextend_increment','64');
('innodb_autoinc_lock_mode','2');
('innodb_buffer_pool_chunk_size','134217728');
('innodb_buffer_pool_dump_at_shutdown','ON');
('innodb_buffer_pool_dump_now','OFF');
('innodb_buffer_pool_dump_pct','25');
('innodb_buffer_pool_filename','ib_buffer_pool');
('innodb_buffer_pool_in_core_file','ON');
('innodb_buffer_pool_instances','1');
('innodb_buffer_pool_load_abort','OFF');
('innodb_buffer_pool_load_at_startup','ON');
('innodb_buffer_pool_load_now','OFF');
('innodb_buffer_pool_size','134217728');
('innodb_change_buffer_max_size','25');
# 表示 change buffer 的大小最多只能占用 buffer pool 的 25%。
# 详细解释： https://time.geekbang.org/column/article/70848
('innodb_change_buffering','all');
('innodb_cmp_per_index_enabled','OFF');
('innodb_commit_concurrency','0');
('innodb_compression_failure_threshold_pct','5');
('innodb_compression_level','6');
('innodb_compression_pad_pct_max','50');
('innodb_concurrency_tickets','5000');
('innodb_data_file_path','ibdata1:12M:autoextend');
('innodb_deadlock_detect','ON');
# 发起死锁检测，发现死锁后，主动回滚死锁链条中的某一个事务，让其他事务得以继续执行
('innodb_dedicated_server','OFF');
('innodb_default_row_format','dynamic');
('innodb_disable_sort_file_cache','OFF');
('innodb_doublewrite','ON');
('innodb_doublewrite_batch_size','0');
('innodb_doublewrite_files','2');
('innodb_doublewrite_pages','4');
('innodb_extend_and_initialize','ON');
('innodb_fast_shutdown','1');
('innodb_file_per_table','ON');
# 参考地址：
# https://time.geekbang.org/column/article/72388
('innodb_fill_factor','100');
('innodb_flush_log_at_timeout','1');
('innodb_flush_method','unbuffered');
('innodb_flush_neighbors','0');
('innodb_flush_sync','ON');
('innodb_flushing_avg_loops','30');
('innodb_force_load_corrupted','OFF');
('innodb_force_recovery','0');
('innodb_fsync_threshold','0');
('innodb_ft_cache_size','8000000');
('innodb_ft_enable_diag_print','OFF');
('innodb_ft_enable_stopword','ON');
('innodb_ft_max_token_size','84');
('innodb_ft_min_token_size','3');
('innodb_ft_num_word_optimize','2000');
('innodb_ft_result_cache_limit','2000000000');
('innodb_ft_sort_pll_degree','2');
('innodb_ft_total_cache_size','640000000');
('innodb_idle_flush_pct','100');
('innodb_io_capacity_max','2000');
# 它会告诉 InnoDB 你的磁盘能力。这个值我建议你设置成磁盘的 IOPS
# https://time.geekbang.org/column/article/71806
('innodb_lock_wait_timeout','50');
# 锁等待超时时间，单位秒
('innodb_log_buffer_size','16777216');
('innodb_log_checksums','ON');
('innodb_log_compressed_pages','ON');
('innodb_log_file_size','50331648');
('innodb_log_files_in_group','2');
('innodb_log_spin_cpu_abs_lwm','80');
('innodb_log_spin_cpu_pct_hwm','50');
('innodb_log_wait_for_flush_spin_hwm','400');
('innodb_log_write_ahead_size','8192');
('innodb_log_writer_threads','ON');
('innodb_lru_scan_depth','1024');
('innodb_max_dirty_pages_pct','90.000000');
('innodb_max_dirty_pages_pct_lwm','10.000000');
('innodb_max_purge_lag','0');
('innodb_max_purge_lag_delay','0');
('innodb_max_undo_log_size','1073741824');
('innodb_old_blocks_pct','37');
('innodb_old_blocks_time','1000');
('innodb_online_alter_log_max_size','134217728');
('innodb_open_files','4000');
('innodb_optimize_fulltext_only','OFF');
('innodb_page_cleaners','1');
('innodb_page_size','16384');
('innodb_parallel_read_threads','4');
('innodb_print_all_deadlocks','OFF');
('innodb_print_ddl_logs','OFF');
('innodb_purge_batch_size','300');
('innodb_purge_rseg_truncate_frequency','128');
('innodb_purge_threads','4');
('innodb_random_read_ahead','OFF');
('innodb_read_ahead_threshold','56');
('innodb_read_io_threads','4');
('innodb_read_only','OFF');
('innodb_redo_log_encrypt','OFF');
('innodb_replication_delay','0');
('innodb_rollback_on_timeout','OFF');
('innodb_rollback_segments','128');
('innodb_sort_buffer_size','1048576');
('innodb_spin_wait_delay','6');
('innodb_spin_wait_pause_multiplier','50');
('innodb_stats_auto_recalc','ON');
('innodb_stats_include_delete_marked','OFF');
('innodb_stats_method','nulls_equal');
('innodb_stats_on_metadata','OFF');
('innodb_stats_persistent','ON');
('innodb_stats_persistent_sample_pages','20');
('innodb_stats_transient_sample_pages','8');
('innodb_status_output','OFF');
('innodb_status_output_locks','OFF');
('innodb_strict_mode','ON');
('innodb_sync_array_size','1');
('innodb_sync_spin_loops','30');
('innodb_table_locks','ON');
('innodb_temp_data_file_path','ibtmp1:12M:autoextend');
('innodb_thread_concurrency','0');
('innodb_thread_sleep_delay','10000');
('innodb_undo_log_encrypt','OFF');
('innodb_undo_log_truncate','ON');
('innodb_undo_tablespaces','2');
('innodb_use_native_aio','ON');
('innodb_validate_tablespace_paths','ON');
('innodb_write_io_threads','4');
('interactive_timeout','28800');
('internal_tmp_mem_storage_engine','TempTable');
('join_buffer_size','262144');
# join_buffer_size 越大，一次可以放入的行越多，分成的段数也就越少，对被驱动表的全表扫描次数就越少
('keep_files_on_create','OFF');
('large_files_support','ON');
('large_page_size','0');
('large_pages','OFF');
('lock_wait_timeout','31536000');
('log_bin','ON');
('log_bin_basename','D:\\mysql-8.0.25-winx64\\data\\binlog');
('log_bin_index','D:\\mysql-8.0.25-winx64\\data\\binlog.index');
('log_bin_trust_function_creators','OFF');
('log_bin_use_v1_row_events','OFF');
('log_error','D:\\mysql-8.0.25-winx64\\data\\DESKTOP-D4DB1RU.err');
('log_error_services','log_filter_internal; log_sink_internal');
('log_error_verbosity','2');
('log_output','FILE');
('max_binlog_cache_size','18446744073709547520');
# 用于控制单个线程内 binlog cache 所占内存的大小。如果超过了这个参数规定的大小，就要暂存到磁盘。
('max_binlog_size','1073741824');
('max_binlog_stmt_cache_size','18446744073709547520');
('max_connect_errors','100');
('max_connections','151');
('max_delayed_threads','20');
('max_digest_length','1024');
('max_error_count','1024');
('max_execution_time','0');
('max_heap_table_size','16777216');
('max_insert_delayed_threads','20');
('max_join_size','18446744073709551615');
('max_length_for_sort_data','4096');
('max_points_in_geometry','65536');
('max_prepared_stmt_count','16382');
('max_relay_log_size','0');
('max_seeks_for_key','4294967295');
('max_sort_length','1024');
('max_sp_recursion_depth','0');
('max_user_connections','0');
('max_write_lock_count','4294967295');
('min_examined_row_limit','0');
('myisam_data_pointer_size','6');
('myisam_max_sort_file_size','2146435072');
('myisam_mmap_size','18446744073709551615');
('myisam_recover_options','OFF');
('myisam_repair_threads','1');
('myisam_sort_buffer_size','8388608');
('myisam_stats_method','nulls_unequal');
('myisam_use_mmap','OFF');
('mysqlx_compression_algorithms','DEFLATE_STREAM,LZ4_MESSAGE,ZSTD_STREAM');
('mysqlx_connect_timeout','30');
('mysqlx_deflate_default_compression_level','3');
('mysqlx_deflate_max_client_compression_level','5');
('mysqlx_document_id_unique_prefix','0');
('mysqlx_enable_hello_notice','ON');
('mysqlx_idle_worker_thread_timeout','60');
('mysqlx_interactive_timeout','28800');
('mysqlx_lz4_default_compression_level','2');
('mysqlx_lz4_max_client_compression_level','8');
('mysqlx_max_allowed_packet','67108864');
('mysqlx_max_connections','100');
('mysqlx_min_worker_threads','2');
('mysqlx_port_open_timeout','0');
('mysqlx_read_timeout','30');
('mysqlx_wait_timeout','28800');
('mysqlx_write_timeout','60');
('mysqlx_zstd_default_compression_level','3');
('mysqlx_zstd_max_client_compression_level','11');
('named_pipe','OFF');
('net_buffer_length','16384');
('net_read_timeout','30');
('net_retry_count','10');
('net_write_timeout','60');
('ngram_token_size','2');
('offline_mode','OFF');
('old_alter_table','OFF');
('open_files_limit','10209');
('optimizer_prune_level','1');
('optimizer_search_depth','62');
('optimizer_trace','enabled=off,one_line=off');
('optimizer_trace_limit','1');
('optimizer_trace_max_mem_size','1048576');
('optimizer_trace_offset','-1');
('partial_revokes','OFF');
('password_history','0');
('password_require_current','OFF');
('password_reuse_interval','0');
('performance_schema','ON');
('performance_schema_accounts_size','-1');
('performance_schema_digests_size','10000');
('performance_schema_error_size','4890');
('performance_schema_events_stages_history_long_size','10000');
('performance_schema_events_stages_history_size','10');
('performance_schema_events_statements_history_long_size','10000');
('performance_schema_events_statements_history_size','10');
('performance_schema_events_transactions_history_long_size','10000');
('performance_schema_events_transactions_history_size','10');
('performance_schema_events_waits_history_long_size','10000');
('performance_schema_events_waits_history_size','10');
('performance_schema_hosts_size','-1');
('performance_schema_max_cond_classes','100');
('performance_schema_max_cond_instances','-1');
('performance_schema_max_digest_length','1024');
('performance_schema_max_digest_sample_age','60');
('performance_schema_max_file_classes','80');
('performance_schema_max_file_handles','32768');
('performance_schema_max_file_instances','-1');
('performance_schema_max_index_stat','-1');
('performance_schema_max_memory_classes','450');
('performance_schema_max_metadata_locks','-1');
('performance_schema_max_mutex_classes','300');
('performance_schema_max_mutex_instances','-1');
('performance_schema_max_prepared_statements_instances','-1');
('performance_schema_max_program_instances','-1');
('performance_schema_max_rwlock_classes','60');
('performance_schema_max_rwlock_instances','-1');
('performance_schema_max_socket_classes','10');
('performance_schema_max_socket_instances','-1');
('performance_schema_max_sql_text_length','1024');
('performance_schema_max_stage_classes','175');
('performance_schema_max_statement_classes','218');
('performance_schema_max_statement_stack','10');
('performance_schema_max_table_handles','-1');
('performance_schema_max_table_instances','-1');
('performance_schema_max_table_lock_stat','-1');
('performance_schema_max_thread_classes','100');
('performance_schema_max_thread_instances','-1');
('performance_schema_session_connect_attrs_size','512');
('performance_schema_setup_actors_size','-1');
('performance_schema_setup_objects_size','-1');
('performance_schema_show_processlist','OFF');
('performance_schema_users_size','-1');
('persisted_globals_load','ON');
('pid_file','D:\\mysql-8.0.25-winx64\\data\\DESKTOP-D4DB1RU.pid');
('preload_buffer_size','32768');
('print_identified_with_as_hex','OFF');
('profiling','OFF');
('profiling_history_size','15');
('protocol_compression_algorithms','zlib,zstd,uncompressed');
('protocol_version','10');
('query_alloc_block_size','8192');
('query_prealloc_size','8192');
('range_alloc_block_size','4096');
('range_optimizer_max_mem_size','8388608');
('rbr_exec_mode','STRICT');
('read_buffer_size','131072');
('read_only','OFF');
('read_rnd_buffer_size','262144');
# read_rnd_buffer 的大小,用于MRR 优化
('regexp_stack_limit','8000000');
('regexp_time_limit','32');
('relay_log','DESKTOP-D4DB1RU-relay-bin');
('relay_log_basename','D:\\mysql-8.0.25-winx64\\data\\DESKTOP-D4DB1RU-relay-bin');
('relay_log_index','D:\\mysql-8.0.25-winx64\\data\\DESKTOP-D4DB1RU-relay-bin.index');
('relay_log_info_file','relay-log.info');
('relay_log_info_repository','TABLE');
('relay_log_purge','ON');
('relay_log_recovery','OFF');
('relay_log_space_limit','0');
('replication_optimize_for_static_plugin_config','OFF');
('replication_sender_observe_commit_only','OFF');
('require_secure_transport','OFF');
('rpl_read_size','8192');
('rpl_stop_slave_timeout','31536000');
('schema_definition_cache','256');
('secondary_engine_cost_threshold','100000.000000');
('secure_file_priv','NULL');
# 如果设置为 empty，表示不限制文件生成的位置，这是不安全的设置；
# 如果设置为一个表示路径的字符串，就要求生成的文件只能放在这个指定的目录，或者它的子目录；
# 如果设置为 NULL，就表示禁止在这个 MySQL 实例上执行 select … into outfile 操作。
('select_into_buffer_size','131072');
('select_into_disk_sync','OFF');
('select_into_disk_sync_delay','0');
('server_id','1');
('server_id_bits','32');
('server_uuid','f9fbf9f9-bc38-11eb-8231-00ff44c1d31a');
('show_create_table_verbosity','OFF');
('show_old_temporals','OFF');
('skip_external_locking','ON');
('skip_name_resolve','OFF');
('skip_networking','OFF');
('skip_show_database','OFF');
('skip_slave_start','OFF');
('slave_allow_batching','OFF');
('slave_checkpoint_group','512');
('slave_checkpoint_period','300');
('slave_compressed_protocol','OFF');
('slave_exec_mode','STRICT');
('slave_load_tmpdir','C:\\WINDOWS\\TEMP');
('slave_max_allowed_packet','1073741824');
('slave_net_timeout','60');
('slave_parallel_type','DATABASE');
# 来控制并行复制策略：配置为 DATABASE，表示使用 MySQL 5.6 版本的按库并行策略；
# 配置为 LOGICAL_CLOCK，表示的就是类似 MariaDB 的策略。
('slave_parallel_workers','0');
# work 线程的个数，是slave用于更新relay log中的日志
('slave_pending_jobs_size_max','134217728');
('slave_preserve_commit_order','OFF');
('slave_rows_search_algorithms','INDEX_SCAN,HASH_SCAN');
('slave_skip_errors','OFF');
('slave_sql_verify_checksum','ON');
('slave_transaction_retries','10');
('slow_launch_time','2');
('slow_query_log_file','D:\\mysql-8.0.25-winx64\\data\\DESKTOP-D4DB1RU-slow.log');
('sort_buffer_size','262144');
('sql_auto_is_null','OFF');
('sql_big_selects','ON');
('sql_buffer_result','OFF');
('sql_log_off','OFF');
('sql_require_primary_key','OFF');
('sql_slave_skip_counter','0');
('sql_warnings','OFF');
('stored_program_cache','256');
('stored_program_definition_cache','256');
('super_read_only','OFF');
('sync_master_info','10000');
('sync_relay_log','10000');
('sync_relay_log_info','10000');
('table_definition_cache','2000');
('table_encryption_privilege_check','OFF');
('table_open_cache','4000');
('table_open_cache_instances','16');
('tablespace_definition_cache','256');
('temptable_max_mmap','1073741824');
('temptable_max_ram','1073741824');
('temptable_use_mmap','ON');
('thread_cache_size','9');
('thread_handling','one-thread-per-connection');
('thread_stack','286720');
('tmp_table_size','16777216');
('transaction_alloc_block_size','8192');
('transaction_isolation','REPEATABLE-READ');
# 事务隔离级别,默认是RR可重复读
('transaction_prealloc_size','4096');
('transaction_read_only','OFF');
('unique_checks','ON');
('updatable_views_with_limit','YES');
('wait_timeout','28800');
# 连接超时时间，单位秒，默认8小时
# 连接被断开之后,客户端再发送请求就会收到错误：Lost connection to MySQL server during query
('windowing_use_high_precision','ON');
autocommit, 'ON';
# 自动提交,
# 关闭自动提交: set autocommit=0;
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