mysql my.cnf配置模板参考

阳光穿透心脏的1/2处 2022-06-02 11:13 167阅读 0赞

[mysql]
    prompt = [\\u@\\h][\\d]>\\_
    
    [mysqld]
    # basic settings #
    user = mysql
    sql_mode = "STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER"
    autocommit = 1
    character_set_server=utf8mb4
    transaction_isolation = READ-COMMITTED
    explicit_defaults_for_timestamp = 1
    max_allowed_packet = 16777216
    event_scheduler = 1  #5.1版本是开启的，5.7默认关闭，周期任务计划线程。
    
    # connection #
    interactive_timeout = 1800
    wait_timeout = 1800
    lock_wait_timeout = 1800   ##元数据锁等待超时时间
    skip_name_resolve = 1      ##只允许IP授权，跳过域名
    max_connections = 512       
    max_connect_errors = 1000000  ##连接请求被阻塞，flush hosts解决，默认值100
    
    # table cache performance settings
    table_open_cache = 4096    ##show status like "open_tables"; 值大，调大。
    table_definition_cache = 4096  #
    table_open_cache_instances = 128 #涉及到锁
    
    # session memory settings #
    read_buffer_size = 16M
    read_rnd_buffer_size = 32M
    sort_buffer_size = 32M
    tmp_table_size = 64M
    join_buffer_size = 128M
    thread_cache_size = 64  #有大量新连接，可以调大此值来提高性能。
    
    # log settings #
    log_error = error.log
    slow_query_log = 1
    slow_query_log_file = slow.log
    log_queries_not_using_indexes = 1
    log_slow_admin_statements = 1  #管理命令执行慢的也放到慢日志里
    log_slow_slave_statements = 1  #从库上执行的慢查询也放到慢日志
    log_throttle_queries_not_using_indexes = 10 #1分钟不走索引的只记录10条
    expire_logs_days = 90
    long_query_time = 2 #可以设置成0.5
    min_examined_row_limit = 100 ##低于100行的慢日志不记录
    binlog-rows-query-log-events = 1 ##binlog记录执行语句
    log-bin-trust-function-creators = 1 ##设置为0，数据更安全，uuid函数能执行，不会报错，但是binlog是row格式，设置为1避免报错信息。
    expire-logs-days = 90
    log-slave-updates = 1
    
    # innodb settings #
    innodb_page_size = 16384
    innodb_buffer_pool_size = 160G
    innodb_buffer_pool_instances = 16 #提高并发，减少不同线程对内存的争用。
    innodb_buffer_pool_load_at_startup = 1 #开启加载热数据，5.7.7以后默认开启
    innodb_buffer_pool_dump_at_shutdown = 1 #关闭数据库备份热数据
    innodb_lru_scan_depth = 4096
    innodb_lock_wait_timeout = 5  #锁超时
    innodb_io_capacity = 10000    #根据情况设置，SSD 4000+
    innodb_io_capacity_max = 20000
    innodb_flush_method = O_DIRECT
    innodb_file_format = Barracuda  #innodb文件格式，默认也是Barracuda,后期这个参数将被舍弃
    innodb_file_format_max = Barracuda
    innodb_undo_logs = 128  #回滚段，innodb_rollback_segments的别名。默认128
    innodb_undo_tablespaces = 3  #减小undo表空间的大小
    innodb_flush_neighbors = 0   #ssd防止性能抖动，机械盘设置为1
    innodb_log_file_size = 17179869184  #16G
    innodb_log_files_in_group = 2
    innodb_log_buffer_size = 16777216  #16M
    innodb_purge_threads = 4
    innodb_large_prefix = 1  
    innodb_thread_concurrency = 64  #根据cpu设置最优性能
    innodb_print_all_deadlocks = 1 #打印死锁信息
    innodb_strict_mode = 1 #严格模式，类似sql_mode
    innodb_sort_buffer_size = 67108864
    innodb_write_io_threads = 16
    innodb_read_io_threads = 16 
    innodb_file_per_table = 1
    innodb_stats_persistent_sample_pages = 64
    innodb_autoinc_lock_mode = 2
    innodb_online_alter_log_max_size=1G  #online DDL
    innodb_open_files=4096
    
    # replication settings #
    master_info_repository = TABLE
    relay_log_info_repository = TABLE
    sync_binlog = 1
    gtid_mode = on
    enforce_gtid_consistency = 1
    log_slave_updates
    binlog_format = ROW
    binlog_rows_query_log_events = 1
    relay_log = relay.log
    relay_log_recovery = 1
    slave_skip_errors = ddl_exist_errors
    slave-rows-search-algorithms = ‘INDEX_SCAN,HASH_SCAN‘
    
    # semi sync replication settings #
    plugin_load = "validate_password.so;rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"
    rpl_semi_sync_master_enabled = 1
    rpl_semi_sync_master_timeout = 3000
    rpl_semi_sync_slave_enabled = 1
    
    # password plugin #
    validate_password_policy=STRONG
    validate-password=FORCE_PLUS_PERMANENT
    
    [mysqld-5.6]
    # metalock performance settings
    metadata_locks_hash_instances=64
    
    [mysqld-5.7]
    # new innodb settings #
    loose_innodb_numa_interleave=1
    innodb_buffer_pool_dump_pct = 40
    innodb_page_cleaners = 16
    innodb_undo_log_truncate = 1
    innodb_max_undo_log_size = 2G
    innodb_purge_rseg_truncate_frequency = 128
    # new replication settings #
    slave-parallel-type = LOGICAL_CLOCK
    slave-parallel-workers = 16
    slave_preserve_commit_order=1
    slave_transaction_retries=128
    # other change settings #
    binlog_gtid_simple_recovery=1
    log_timestamps=system
    show_compatibility_56=on

只是参考，要根据业务设置参数。

https://github.com/jdaaaaaavid/mysql\_best\_configuration/blob/master/my.cnf