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作者：蒋乐兴 MySQL-DBA 目前在 github 上维护着两套 MySQL 开源工具 mysqltools & dbm(dbm-agent dbm-center)，对机器学习和程序化交易也有些心得。
目录
-
用dbm来解放生产力
-
安装&初始化dbm-agent
-
一行命令解决安装单机的问题
-
一行命令解决增加slave的问题
-
一行命令解决搭建MGR集群的问题
-
dbm-agent建设出来的实例质量如何
一、用dbm来解放生产力
对于 dbm 来说不管你是搭建单机、主从复制、异或是 MGR 都只需要一行命令就能高效、高质量的解决；并且几乎不会有任何成本(dbm是全开源的，包含dbm-agent,dbm-center)，下面先来检验一下 dbm-agent 常来的效率提升。
二、安装&初始化dbm-agent
1、 通过 pip3 这个 python 包管理工具来安装 dbm-agent
bash
sudo su
pip3 install dbm-agent
Installing collected packages: dbm-agent
Running setup.py install for dbm-agent ... done
Successfully installed dbm-agent-0.4.2
2、 初始化 dbm-agent
bash
sudo su
dbm-agent init
# 成功后可以看到如下目录结构
tree /usr/local/dbm-agent/
├── etc
│ ├── dbma.cnf # dbm-agent 的配置文件
│ ├── init-users.sql # 在初始化数据库里将使用这个文件中的用户名和密码来创建用户
│ └── templates
│ ├── create-innodb-cluster.js
│ ├── init-users.sql.jinja
│ ├── mysql-8.0.17.cnf.jinja # mysql-8.0.17 版本对应的配置文件模板
│ ├── mysql-8.0.18.cnf.jinja # mysql-8.0.18 版本对应的配置文件模板
│ ├── mysql-8.0-init-only.jinja # 只有初始化时才用到的配置文件
│ └── mysqld.service.jinja # mysql systemd 配置文件模板
├── logs # dbm-agent 的日志文件保存目录(只要有守护进程模式下才会向这时写日志)
└── pkg
init 的时候可以通过 --init-pwd 设置 mysql 用户的密码，如果没有指定那么默认为 dbma@0352
3、 下载 mysql 与 mysql-shell 的二进制安装包到 /usr/local/dbm-agent/pkg， 完成后目录的内容如下
bash
tree /usr/local/dbm-agent/pkg
├── mysql-8.0.18-linux-glibc2.12-x86_64.tar.xz # 各个软件的安装包(要自己下载并保存到这里，dbm-agent不会自动下载它
└── mysql-shell-8.0.18-linux-glibc2.12-x86-64bit.tar.gz # 各个软件的安装包(要自己下载并保存到这里，dbm-agent不会自动下载它)
下面的内容不会再加上 sudo su 了，默认都在 root 下运行
三、一行命令解决安装单机的问题
1、 安装一个监听在 3306 端口上的实例，限制它最大给用 1G 内存
bash
dbma-cli-single-instance --port=3306 --max-mem=1024 install
2019-11-17 16:48:03,108 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller.install - im - INFO - 1115 - execute checkings for install mysql
2019-11-17 16:48:03,135 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._create_mysql_user - im - INFO - 864 - create user 'mysql3306' complete
2019-11-17 16:48:03,136 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._create_data_dir - im - INFO - 888 - create datadir '/database/mysql/data/3306' complete
2019-11-17 16:48:03,137 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._create_binlog_dir - im - INFO - 910 - create binary dir '/binlog/mysql/binlog/3306' complete
2019-11-17 16:48:03,138 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._create_backup_dir - im - INFO - 932 - create backup dir '/backup/mysql/backup/3306' complete
2019-11-17 16:48:03,138 - dbm-agent.dbma.mysqldeploy.MyCnfInitRender.render_template_file - im - INFO - 518 - using template 'mysql-8.0-init-only.jinja'
2019-11-17 16:48:03,138 - dbm-agent.dbma.mysqldeploy.MyCnfInitRender.set_template - im - INFO - 457 - using template file 'mysql-8.0-init-only.jinja'
2019-11-17 16:48:03,175 - dbm-agent.dbma.mysqldeploy.MyCnfInitRender.render - im - INFO - 497 - render mysql config file /tmp/mysql-init.cnf
2019-11-17 16:48:03,175 - dbm-agent.dbma.mysqldeploy.MyCnfInitRender.render_template_file - im - INFO - 524 - render template file complete
2019-11-17 16:48:03,175 - dbm-agent.dbma.mysqldeploy.MyCnfMSRender.render_template_file - im - INFO - 548 - using template 'mysql-8.0.18.cnf.jinja'
2019-11-17 16:48:03,175 - dbm-agent.dbma.mysqldeploy.MyCnfMSRender.set_template - im - INFO - 457 - using template file 'mysql-8.0.18.cnf.jinja'
2019-11-17 16:48:03,208 - dbm-agent.dbma.mysqldeploy.MyCnfMSRender.render - im - INFO - 497 - render mysql config file /etc/my-3306.cnf
2019-11-17 16:48:03,208 - dbm-agent.dbma.mysqldeploy.MyCnfMSRender.render_template_file - im - INFO - 554 - render template file complete
2019-11-17 16:48:03,208 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._render_production_cnf - im - INFO - 956 - render production cnf complete
2019-11-17 16:48:03,209 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._init_database - im - INFO - 1004 - ['/usr/local/mysql-8.0.18-linux-glibc2.12-x86_64/bin/mysqld', '--defaults-file=/tmp/mysql-init.cnf', '--initialize-insecure', '--user=mysql3306', '--init-file=/usr/local/dbm-agent/etc/init-users.sql']
2019-11-17 16:48:13,963 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._init_database - im - INFO - 1011 - init database complete
2019-11-17 16:48:13,967 - dbm-agent.dbma.mysqldeploy.MySQLSystemdRender.render - im - INFO - 666 - render systemd config file complete
2019-11-17 16:48:13,967 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._config_systemd - im - INFO - 1027 - mysql systemd config complete
2019-11-17 16:48:14,146 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._enable_mysql - im - INFO - 1038 - config mysql auto start on boot complete
2019-11-17 16:48:16,172 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._start_mysql - im - INFO - 1068 - start mysql complete
2019-11-17 16:48:16,173 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._export_path - im - INFO - 1078 - export path complete
2019-11-17 16:48:16,177 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._export_header_file - im - INFO - 1106 - export header file complete
2019-11-17 16:48:16,177 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller._export_so - im - INFO - 1093 - so file has been exported
2019-11-17 16:48:16,177 - dbm-agent.dbma.mysqldeploy.SingleInstanceInstaller.install - im - INFO - 1150 - install mysql single instance complete
2、 检查进程是否运行
bash
ps -ef | grep mysql
mysql33+ 7418 1 1 16:48 ? 00:00:02 /usr/local/mysql-8.0.18-linux-glibc2.12-x86_64/bin/mysqld --defaults-file=/etc/my-3306.cnf
root 7463 7271 0 16:51 pts/0 00:00:00 grep --color=auto mysql
3、 连接进去测试一下
sql
mysql -h127.0.0.1 -P3306 -uroot -pdbma@0352
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.18 MySQL Community Server - GPL
Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> select user,host from mysql.user order by user;
+--------------------+-----------+
| user | host |
+--------------------+-----------+
| cloneuser | % |
| cloneuser | 127.0.0.1 |
| cloneuser | localhost |
| dbma | 127.0.0.1 |
| innodbclusteradmin | % |
| monitor | 127.0.0.1 |
| mysql.infoschema | localhost |
| mysql.session | localhost |
| mysql.sys | localhost |
| repluser | % |
| root | 127.0.0.1 |
| root | localhost |
+--------------------+-----------+
12 rows in set (0.01 sec)
四、一行命令解决增加slave的问题
上一个例子中的单机是在 172.16.192.100 这台主机上的，如果想把 172.16.192.110 作为它的 slave ；手工做的话就要“备份”，“还原”，“建立主从关系”，dbm-agent 把这些逻辑都实现了，并且只要一行命令就能解决
1、 假设你已经在 172.16.192.110 主机上完成了 dbm-agent 的安装与初始化
bash
dbma-cli-build-slave --host=172.16.192.100 --port=3306 build-slave
2019-11-17 17:03:46,620 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave.remote_clone - bms - INFO - 1590 - execute checkings for install mysql`
2019-11-17 17:03:46,654 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave.install - bms - INFO - 1115 - execute checkings for install mysql
2019-11-17 17:03:46,695 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._create_mysql_user - bms - INFO - 864 - create user 'mysql3306' complete
2019-11-17 17:03:46,698 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._create_data_dir - bms - INFO - 888 - create datadir '/database/mysql/data/3306' complete
2019-11-17 17:03:46,701 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._create_binlog_dir - bms - INFO - 910 - create binary dir '/binlog/mysql/binlog/3306' complete
2019-11-17 17:03:46,704 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._create_backup_dir - bms - INFO - 932 - create backup dir '/backup/mysql/backup/3306' complete
2019-11-17 17:03:46,706 - dbm-agent.dbma.mysqldeploy.MyCnfInitRender.render_template_file - bms - INFO - 518 - using template 'mysql-8.0-init-only.jinja'
2019-11-17 17:03:46,706 - dbm-agent.dbma.mysqldeploy.MyCnfInitRender.set_template - bms - INFO - 457 - using template file 'mysql-8.0-init-only.jinja'
2019-11-17 17:03:46,741 - dbm-agent.dbma.mysqldeploy.MyCnfInitRender.render - bms - INFO - 497 - render mysql config file /tmp/mysql-init.cnf
2019-11-17 17:03:46,741 - dbm-agent.dbma.mysqldeploy.MyCnfInitRender.render_template_file - bms - INFO - 524 - render template file complete
2019-11-17 17:03:46,742 - dbm-agent.dbma.mysqldeploy.MyCnfMSRender.render_template_file - bms - INFO - 548 - using template 'mysql-8.0.18.cnf.jinja'
2019-11-17 17:03:46,742 - dbm-agent.dbma.mysqldeploy.MyCnfMSRender.set_template - bms - INFO - 457 - using template file 'mysql-8.0.18.cnf.jinja'
2019-11-17 17:03:46,779 - dbm-agent.dbma.mysqldeploy.MyCnfMSRender.render - bms - INFO - 497 - render mysql config file /etc/my-3306.cnf
2019-11-17 17:03:46,779 - dbm-agent.dbma.mysqldeploy.MyCnfMSRender.render_template_file - bms - INFO - 554 - render template file complete
2019-11-17 17:03:46,779 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._render_production_cnf - bms - INFO - 956 - render production cnf complete
2019-11-17 17:03:46,779 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._init_database - bms - INFO - 1004 - ['/usr/local/mysql-8.0.18-linux-glibc2.12-x86_64/bin/mysqld', '--defaults-file=/tmp/mysql-init.cnf', '--initialize-insecure', '--user=mysql3306', '--init-file=/usr/local/dbm-agent/etc/init-users.sql']
2019-11-17 17:03:57,934 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._init_database - bms - INFO - 1011 - init database complete
2019-11-17 17:03:57,938 - dbm-agent.dbma.mysqldeploy.MySQLSystemdRender.render - bms - INFO - 666 - render systemd config file complete
2019-11-17 17:03:57,938 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._config_systemd - bms - INFO - 1027 - mysql systemd config complete
2019-11-17 17:03:58,110 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._enable_mysql - bms - INFO - 1038 - config mysql auto start on boot complete
2019-11-17 17:04:00,144 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._start_mysql - bms - INFO - 1068 - start mysql complete
2019-11-17 17:04:00,145 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._export_path - bms - INFO - 1078 - export path complete
2019-11-17 17:04:00,147 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._export_header_file - bms - INFO - 1106 - export header file complete
2019-11-17 17:04:00,148 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave._export_so - bms - INFO - 1093 - so file has been exported
2019-11-17 17:04:00,148 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave.install - bms - INFO - 1150 - install mysql single instance complete
2019-11-17 17:04:00,167 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave.remote_clone - bms - INFO - 1613 - prepare execute 'set @@global.clone_valid_donor_list='172.16.192.100:3306';'
2019-11-17 17:04:00,168 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave.remote_clone - bms - INFO - 1618 - prepare execute 'clone instance from cloneuser@'172.16.192.100':3306 identified by 'dbma@0352';
2019-11-17 17:04:03,431 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave.remote_clone - bms - INFO - 1629 - remote clone complete (mysql will auto restart,please wait)
2019-11-17 17:04:03,432 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave.build_slave - bms - INFO - 1689 - wait mysql protocol avaiable
2019-11-17 17:04:14,454 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave.build_slave - bms - INFO - 1710 - prepare execute 'change master to master_host='172.16.192.100',master_port=3306,master_user='repluser',master_password='dbma@0352',master_ssl = 1,master_auto_position=1;'
2019-11-17 17:04:14,466 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave.build_slave - bms - INFO - 1716 - prepare execute 'start slave;'
2019-11-17 17:04:14,472 - dbm-agent.dbma.mysqldeploy.MySQLBuildSlave.build_slave - bms - INFO - 1728 - rebuild mysql slave complete
2、 检查主从关系是否正常
sql
mysql -uroot -pdbma@0352 -h127.0.0.1
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 12
Server version: 8.0.18 MySQL Community Server - GPL
Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.16.192.100
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000002
Read_Master_Log_Pos: 151
Relay_Log_File: relay.000002
Relay_Log_Pos: 357
Relay_Master_Log_File: mysql-bin.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
**五、**一行命令解决搭建MGR集群的问题
这里不再举例了可以直接到 github 上看 dbm-agent 的说明, mysql-group-replication,mysql-shell,innodb-cluster,mysql-router 个个都支持。
六、dbm-agent建设出来的实例质量如何
1、 一份完整、按需优化&渲染过后的配置文件
ini
#cat /etc/my-3306.cnf
[mysqld]
# basic
user = mysql3306
basedir = /usr/local/mysql-8.0.18-linux-glibc2.12-x86_64
datadir = /database/mysql/data/3306
server_id = 1388
port = 3306
bind_address = *
admin_address = 127.0.0.1
mysqlx_port = 33060
admin_port = 33062
socket = /tmp/mysql-3306.sock
mysqlx_socket = /tmp/mysqlx-33060.sock
pid_file = /tmp/mysql-3306.pid
character_set_server = utf8mb4
open_files_limit = 102000
max_prepared_stmt_count = 1048576
skip_name_resolve = 1
super_read_only = OFF
log_timestamps = system
event_scheduler = OFF
auto_generate_certs = ON
activate_all_roles_on_login = ON
end_markers_in_json = OFF
tmpdir = /tmp/
max_connections = 128
autocommit = ON
sort_buffer_size = 256K
join_buffer_size = 256K
eq_range_index_dive_limit = 200
## table
big_tables = OFF
sql_require_primary_key = OFF
lower_case_table_names = 1
auto_increment_increment = 1
auto_increment_offset = 1
table_open_cache = 4000
table_definition_cache = 2000
table_open_cache_instances = 32
## net
max_allowed_packet = 1G
connect_timeout = 10
interactive_timeout = 28800
net_read_timeout = 30
net_retry_count = 10
net_write_timeout = 60
net_buffer_length = 32K
## logs
log_output = FILE
general_log = OFF
general_log_file = general.log
# error
log_error = err.log
log_statements_unsafe_for_binlog = ON
# slow
slow_query_log = ON
slow_query_log_file = slow.log
long_query_time = 2
log_queries_not_using_indexes = OFF
log_slow_admin_statements = OFF
log_slow_slave_statements = OFF
# binlog
log_bin = /binlog/mysql/binlog/3306/mysql-bin
binlog_checksum = none
log_bin_trust_function_creators = ON
binlog_direct_non_transactional_updates = OFF
binlog_expire_logs_seconds = 604800
binlog_error_action = ABORT_SERVER
binlog_format = ROW
max_binlog_stmt_cache_size = 1G
max_binlog_cache_size = 1G
max_binlog_size = 1G
binlog_order_commits = ON
binlog_row_image = FULL
binlog_row_metadata = MINIMAL
binlog_rows_query_log_events = ON
binlog_stmt_cache_size = 32K
log_slave_updates = ON
binlog_transaction_dependency_history_size =25000
binlog_transaction_dependency_tracking = WRITESET
sync_binlog = 1
binlog_cache_size = 96K
binlog_group_commit_sync_delay = 0
binlog_group_commit_sync_no_delay_count = 0
## replication
rpl_semi_sync_master_enabled = 1
rpl_semi_sync_slave_enabled = 1
rpl_semi_sync_master_timeout = 1000
rpl_semi_sync_master_wait_point = AFTER_SYNC
rpl_semi_sync_master_wait_no_slave = ON
rpl_semi_sync_master_wait_for_slave_count = 1
master_info_repository = table
sync_master_info = 10000
skip_slave_start = OFF
slave_load_tmpdir = /tmp/
plugin_load_add = semisync_master.so
plugin_load_add = semisync_slave.so
relay_log = relay
sync_relay_log = 10000
sync_relay_log_info = 10000
relay_log_info_repository = table
slave_preserve_commit_order = ON
slave_parallel_type = logical_clock
slave_parallel_workers = 2
slave_max_allowed_packet = 1G
## gtid
gtid_mode = ON
binlog_gtid_simple_recovery = ON
enforce_gtid_consistency = ON
gtid_executed_compression_period = 1000
## clone
plugin-load-add = mysql_clone.so
clone = FORCE_PLUS_PERMANEN
# engines
default_storage_engine = innodb
default_tmp_storage_engine = innodb
internal_tmp_mem_storage_engine = TempTable
## innodb
innodb_data_home_dir = ./
innodb_data_file_path = ibdata1:64M:autoextend
innodb_page_size = 16K
innodb_default_row_format = dynamic
innodb_log_group_home_dir = ./
innodb_redo_log_encrypt = OFF
innodb_online_alter_log_max_size = 256M
innodb_undo_directory = ./
innodb_undo_log_encrypt = OFF
innodb_undo_log_truncate = ON
innodb_max_undo_log_size = 1G
innodb_rollback_on_timeout = OFF
innodb_rollback_segments = 128
innodb_log_checksums = ON
innodb_checksum_algorithm = crc32
innodb_log_compressed_pages = ON
innodb_doublewrite = ON
innodb_commit_concurrency = 0
innodb_read_only = OFF
innodb_dedicated_server = OFF
innodb_old_blocks_pct = 37
innodb_old_blocks_time = 1000
innodb_random_read_ahead = OFF
innodb_read_ahead_threshold = 56
innodb_max_dirty_pages_pct_lwm = 20
innodb_max_dirty_pages_pct = 90
innodb_lru_scan_depth = 1024
innodb_adaptive_flushing = ON
innodb_adaptive_flushing_lwm = 10
innodb_flushing_avg_loops = 30
innodb_buffer_pool_dump_pct = 50
innodb_buffer_pool_dump_at_shutdown = ON
innodb_buffer_pool_load_at_startup = ON
innodb_buffer_pool_filename = ib_buffer_pool
innodb_stats_persistent = ON
innodb_stats_on_metadata = ON
innodb_stats_method = nulls_equal
innodb_stats_auto_recalc = ON
innodb_stats_include_delete_marked = ON
innodb_stats_persistent_sample_pages = 20
innodb_stats_transient_sample_pages = 8
innodb_status_output = OFF
innodb_status_output_locks = OFF
innodb_buffer_pool_dump_now = OFF
innodb_buffer_pool_load_abort = OFF
innodb_buffer_pool_load_now = OFF
innodb_thread_concurrency = 0
innodb_concurrency_tickets = 5000
innodb_thread_sleep_delay = 15000
innodb_adaptive_max_sleep_delay = 150000
innodb_read_io_threads = 4
innodb_write_io_threads = 4
innodb_use_native_aio = ON
innodb_flush_sync = OFF
innodb_spin_wait_delay = 6
innodb_purge_threads = 4
innodb_purge_batch_size = 300
innodb_purge_rseg_truncate_frequency = 128
innodb_deadlock_detect = ON
innodb_print_all_deadlocks = ON
innodb_lock_wait_timeout = 50
innodb_table_locks = ON
innodb_sync_array_size = 1
innodb_sync_spin_loops = 30
innodb_print_ddl_logs = OFF
innodb_replication_delay = 0
innodb_cmp_per_index_enabled = OFF
innodb_disable_sort_file_cache = OFF
innodb_numa_interleave = OFF
innodb_strict_mode = ON
innodb_sort_buffer_size = 1M
innodb_fast_shutdown = 1
innodb_force_load_corrupted = OFF
innodb_force_recovery = 0
innodb_temp_tablespaces_dir = ./#innodb_temp/
innodb_tmpdir = ./
innodb_temp_data_file_path = ibtmp1:64M:autoextend
innodb_page_cleaners = 4
innodb_adaptive_hash_index = ON
innodb_adaptive_hash_index_parts = 8
innodb_flush_log_at_timeout = 1
innodb_fsync_threshold = 0
innodb_fill_factor = 90
innodb_file_per_table = ON
innodb_autoextend_increment = 64
innodb_open_files = 100000
innodb_buffer_pool_chunk_size = 128M
innodb_buffer_pool_instances = 1
innodb_log_files_in_group = 8
innodb_log_file_size = 64M
innodb_flush_neighbors = 0
innodb_io_capacity = 4000
innodb_io_capacity_max = 20000
innodb_autoinc_lock_mode = 2
innodb_change_buffer_max_size = 25
innodb_flush_method = O_DIRECT
innodb_log_buffer_size = 64M
innodb_flush_log_at_trx_commit = 1
innodb_buffer_pool_size = 256M
#### for performance_schema
performance_schema =OFF
performance_schema_consumer_global_instrumentation =ON
performance_schema_consumer_thread_instrumentation =ON
performance_schema_consumer_events_stages_current =ON
performance_schema_consumer_events_stages_history =ON
performance_schema_consumer_events_stages_history_long =OFF
performance_schema_consumer_statements_digest =ON
performance_schema_consumer_events_statements_current =ON
performance_schema_consumer_events_statements_history =ON
performance_schema_consumer_events_statements_history_long =OFF
performance_schema_consumer_events_waits_current =ON
performance_schema_consumer_events_waits_history =ON
performance_schema_consumer_events_waits_history_long =OFF
performance-schema-instrument ='memory/%=COUNTED'
# -- ~ _ ~ ~ _ ~ ~ _ ~ --
# base on mysql-8.0.18
# generated by https://www.sqlpy.com 2019年10月14日 21时47分11秒
# wechat: jianglegege
# email: 1721900707@qq.com
# -- ~ _ ~ --
2、 把规范和流程物化到 dbm-agent 的每一个环节，而不是口头上或文档上;更加详细的内容可以参考 github dbm-agent
来源：oschina
链接：https://my.oschina.net/lv96/blog/3148072