分类 服务器运维 下的文章

http://www.innomysql.net/article/21730.html

整理了一份最新基于MySQL 5.6和5.7的配置文件模板,
基本上可以说覆盖90%的调优选项,用户只需根据自己的服务器配置稍作修改即可,如InnoDB缓冲池的大小、IO能力(innodb_buffer_pool_size,innodb_io_capacity)。特别注意,这份配置文件不用修改,可以直接运行在MySQL5.6和5.7的版本下,
这里使用了小小的技巧,具体可看配置文件。如果配置参数存在问题,也可以及时反馈,我们一起成长。

触发做这件事情的原因是大部分网络上的MySQL配置文件都非常非常古老,大多都是基于MySQL 5.1的版本,这导致了绝大部分MySQL并没有运行在最优的环境,从而导致一些错误的使用,亦或是灾难性事故的发生,比如数据丢失,主从数据不一致等。而这些问题早在5.6版本及以后的版本中得到了解决。

最后,抛弃你那所谓的、陈旧的、错误的MySQL配置文件,面向一个崭新的高性能、高可靠、高可扩展MySQL时代,你要做的就是下载这份配置文件并用于你的生产环境。配置如下:

[client]
user=davi
password=88888888
[mysqld]
########basic settings########
server-id = 11
port = 3306
user = mysql
bind_address = 10.166.224.32
autocommit = 0
character_set_server=utf8mb4
skip_name_resolve = 1
max_connections = 800
max_connect_errors = 1000
datadir = /data/mysql_data
transaction_isolation = READ-COMMITTED
explicit_defaults_for_timestamp = 1
join_buffer_size = 134217728
tmp_table_size = 67108864
tmpdir = /tmp
max_allowed_packet = 16777216
sql_mode = "STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER"
interactive_timeout = 1800
wait_timeout = 1800
read_buffer_size = 16777216
read_rnd_buffer_size = 33554432
sort_buffer_size = 33554432
########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
log_slow_slave_statements = 1
log_throttle_queries_not_using_indexes = 10
expire_logs_days = 90
long_query_time = 2
min_examined_row_limit = 100
########replication settings########
master_info_repository = TABLE
relay_log_info_repository = TABLE
log_bin = bin.log
sync_binlog = 1
gtid_mode = on
enforce_gtid_consistency = 1
log_slave_updates
binlog_format = row
relay_log = relay.log
relay_log_recovery = 1
binlog_gtid_simple_recovery = 1
slave_skip_errors = ddl_exist_errors
########innodb settings########
innodb_page_size = 8192
innodb_buffer_pool_size = 6G
innodb_buffer_pool_instances = 8
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_lru_scan_depth = 2000
innodb_lock_wait_timeout = 5
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
innodb_flush_method = O_DIRECT
innodb_file_format = Barracuda
innodb_file_format_max = Barracuda
innodb_log_group_home_dir = /redolog/
innodb_undo_directory = /undolog/
innodb_undo_logs = 128
innodb_undo_tablespaces = 3
innodb_flush_neighbors = 1
innodb_log_file_size = 4G
innodb_log_buffer_size = 16777216
innodb_purge_threads = 4
innodb_large_prefix = 1
innodb_thread_concurrency = 64
innodb_print_all_deadlocks = 1
innodb_strict_mode = 1
innodb_sort_buffer_size = 67108864
########semi sync replication settings########
plugin_dir=/usr/local/mysql/lib/plugin
plugin_load = "rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"
loose_rpl_semi_sync_master_enabled = 1
loose_rpl_semi_sync_slave_enabled = 1
loose_rpl_semi_sync_master_timeout = 5000
[mysqld-5.7]
innodb_buffer_pool_dump_pct = 40
innodb_page_cleaners = 4
innodb_undo_log_truncate = 1
innodb_max_undo_log_size = 2G
innodb_purge_rseg_truncate_frequency = 128
binlog_gtid_simple_recovery=1
log_timestamps=system
transaction_write_set_extraction=MURMUR32
show_compatibility_56=on

参考文档

http://dev.mysql.com/doc/refman/5.7/en/json-search-functions.html

编辑my.cnf
[mysqld] 下面增加

sql_mode='ONLY_FULL_GROUP_BY,NO_AUTO_VALUE_ON_ZERO,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,PIPES_AS_CONCAT,ANSI_QUOTES'

运行 MYSQL :

/etc/init.d/mysqld start

mysql -uroot -p

JSON查询方法:

JSON_EXTRACT(json_doc, path[, path] ...

普通查询
mysql> SELECT JSON_EXTRACT('{"a":1,"b":0}','$.a') AS json ;
+------+
| json |
+------+
| 1    |
+------+
1 row in set (0.00 sec)
数组查询
mysql> SELECT JSON_EXTRACT('[10,20,30]','$[*]') AS json ;
+--------------+
| json         |
+--------------+
| [10, 20, 30] |
+--------------+
1 row in set (0.00 sec)
查询数组 键值 内容
mysql> SELECT JSON_EXTRACT('{"a":1,"b":0,"c":[10,20,30]}','$.c[1]') AS json ;
+------+
| json |
+------+
| 20   |
+------+
1 row in set (0.00 sec)

JSON_SEARCH(json_doc, one_or_all, search_str[, escape_char[, path] ...])

one_or_all : one or all

PS:适用于搜索数组


搜索数组
SELECT JSON_SEARCH('["1","0",["10","20","30"]]','one','1')  AS json ; 

结合JSON_EXTRACT
SELECT JSON_SEARCH(JSON_EXTRACT('{"a":1,"b":0,"c":["10","20","30"]}','$.c'),'all','10') AS json ;