MySQL配置文件简单解析

Posted 2020-09-24 运维小兵

  1 [mysqld]
  2 basedir         = /data/mysql
  3 datadir         = /data/mysqldata
  4 tmpdir        = /data/mysqltmpdata　　//mysql的查询临时目录，避免因为磁盘空间不足，造成相关粗偶
  5 port            = 3306
  6 socket          = /data/mysql/mysql.sock
  7 init-connect=‘SET NAMES utf8‘　　//连接的字符集为utf8
  8 character-set-server = utf8　　//系统的默认字符集为utf8
  9 lower_case_table_names  = 1
 10 
 11 back_log = 1024
 12 max_connections = 5000
 13 max_connect_errors = 100000
 14 expire_logs_days = 5
 15 max_allowed_packet = 16M
 16 binlog_cache_size = 5M
 17 max_heap_table_size     = 32M
 18 tmp_table_size          = 32M
 19 sort_buffer_size = 8M
 20 join_buffer_size = 8M
 21 ft_min_word_len = 4
 22 thread_stack = 254K
 23 thread_cache_size = 100
 24 query_cache_type = 0
 25 query_cache_size = 0
 26 
 27 
 28 log-bin=master-bin
 29 binlog-format=ROW　　//二进制日志格式为ROW模式
 30 log-error=/var/log/mysqld.log
 31 slow_query_log = 1
 32 slow-query-log-file = mysql-slow.log
 33 long_query_time = 1
 34 
 35 
 36 server-id = 31
 37 replicate-ignore-db=test　　//主从复制跳过test库及相关表，以及mysql库及相关表
 38 replicate-wild-ignore-table=test.%
 39 replicate-ignore-db=mysql
 40 replicate-wild-ignore-table=mysql.%
 41 skip-slave-start
 42 log_slave_updates
 43 
 44 
 45 wait_timeout = 28800
 46 interactive_timeout = 28800
 47 skip-name-resolve=on
 48 skip-external-locking
 49 
 50 
 51 default-storage-engine = InnoDB
 52 transaction_isolation = REPEATABLE-READ
 53 innodb_buffer_pool_size = 9G    //此处的值大概为系统总内存的70%-80%
 54 innodb_strict_mode = 1
 55 innodb_file_per_table = 1
 56 innodb-open-files = 655350
 57 innodb_write_io_threads=16
 58 innodb_read_io_threads=16
 59 innodb_thread_concurrency = 0
 60 innodb_io_capacity=1000
 61 innodb_flush_log_at_trx_commit = 1
 62 innodb_log_buffer_size = 32M
 63 innodb_log_file_size = 512M
 64 innodb_log_files_in_group = 2
 65 innodb_adaptive_flushing = 1
 66 innodb_max_dirty_pages_pct = 90
 67 innodb_lock_wait_timeout = 120
 68 innodb_fast_shutdown = 0
 69 innodb_flush_method  = O_DIRECT
 70 innodb_stats_on_metadata = 0
 71 
 72 
 73 innodb_buffer_pool_instances = 8
 74 sysdate-is-now
 75 performance_schema
 76 sql_mode=‘‘
 77 auto_increment_offset=1　　//自增字段的起始值为1
 78 auto_increment_increment=2　　//自增的间距为2
 79 
 80 
 81 [mysqldump]
 82 quick
 83 max_allowed_packet = 16M
 84 
 85 [mysql]
 86 default-character-set=utf8
 87 pager=more
 88 no-auto-rehash
 89 socket          = /data/mysql/mysql.sock //添加此处配置为了避免因为单独配置mysql的sock文件，造成无法使用mysql命令直接连接
 90 
 91 [myisamchk]
 92 key_buffer = 512M
 93 sort_buffer_size = 512M
 94 read_buffer = 8M
 95 write_buffer = 8M
 96 
 97 [mysqlhotcopy]
 98 interactive-timeout
 99 
100 [mysqld_safe]
101 pid-file=/var/run/mysqld/mysqld.pid
102 open-files-limit = 65535
103 user = mysql