1、安装MySQL
dnf -y install mysql-server
2、修改配置
# vim /etc/my.cnf [client] port = 3306 socket = /var/lib/mysql/mysql.sock default-character-set = utf8mb4 [mysql] prompt="MySQL [\d]> " no-auto-rehash [mysqld] port = 3306 socket = /var/lib/mysql/mysql.sock default_authentication_plugin = mysql_native_password datadir = /var/lib/mysql pid-file = /var/lib/mysql/mysql.pid user = mysql bind-address = 0.0.0.0 server-id = 1 init-connect = 'SET NAMES utf8mb4' character-set-server = utf8mb4 collation-server = utf8mb4_0900_ai_ci skip-name-resolve #skip-networking back_log = 300 max_connections = 5295 max_connect_errors = 6000 open_files_limit = 65535 table_open_cache = 1024 max_allowed_packet = 500M binlog_cache_size = 1M max_heap_table_size = 8M tmp_table_size = 128M read_buffer_size = 2M read_rnd_buffer_size = 8M sort_buffer_size = 8M join_buffer_size = 8M key_buffer_size = 256M thread_cache_size = 64 ft_min_word_len = 4 log_bin = mysql-bin binlog_format = row binlog_expire_logs_seconds = 604800 log_error = /var/lib/mysql/mysql-error.log slow_query_log = 1 long_query_time = 1 slow_query_log_file = /var/lib/mysql/mysql-slow.log performance_schema = 0 explicit_defaults_for_timestamp lower_case_table_names = 1 skip-external-locking default_storage_engine = InnoDB #default-storage-engine = MyISAM innodb_file_per_table = 1 innodb_open_files = 500 innodb_buffer_pool_size = 1024M innodb_write_io_threads = 4 innodb_read_io_threads = 4 innodb_thread_concurrency = 0 innodb_purge_threads = 1 innodb_flush_log_at_trx_commit = 2 innodb_log_buffer_size = 2M innodb_log_file_size = 32M innodb_log_files_in_group = 3 innodb_max_dirty_pages_pct = 90 innodb_lock_wait_timeout = 120 bulk_insert_buffer_size = 8M myisam_sort_buffer_size = 64M myisam_max_sort_file_size = 10G interactive_timeout = 28800 wait_timeout = 28800 binlog_rows_query_log_events = 1 log_bin_trust_function_creators = 1 log_timestamps = SYSTEM sql_mode = NO_AUTO_VALUE_ON_ZERO innodb_strict_mode = 0 plugin-load=mysql_clone.so [mysqldump] quick max_allowed_packet = 500M [myisamchk] key_buffer_size = 256M sort_buffer_size = 8M read_buffer = 4M write_buffer = 4M
3、启动服务
systemctl enable --now mysqld
4、安全配置
# mysql_secure_installation mysql_secure_installation: [ERROR] unknown variable 'default-character-set=utf8mb4'. Securing the MySQL server deployment. Connecting to MySQL using a blank password. VALIDATE PASSWORD COMPONENT can be used to test passwords and improve security. It checks the strength of password and allows the users to set only those passwords which are secure enough. Would you like to setup VALIDATE PASSWORD component? Press y|Y for Yes, any other key for No: #回车 Please set the password for root here. New password: #输入密码 Re-enter new password: #输入密码 By default, a MySQL installation has an anonymous user, allowing anyone to log into MySQL without having to have a user account created for them. This is intended only for testing, and to make the installation go a bit smoother. You should remove them before moving into a production environment. Remove anonymous users? (Press y|Y for Yes, any other key for No) : y Success. Normally, root should only be allowed to connect from 'localhost'. This ensures that someone cannot guess at the root password from the network. Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y Success. By default, MySQL comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment. Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y - Dropping test database... Success. - Removing privileges on test database... Success. Reloading the privilege tables will ensure that all changes made so far will take effect immediately. Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y Success. All done!
5、删除MySQL的所有数据并初始化
systemctl stop mysqld rm -rf /var/lib/mysql/* mysqld --initialize --user=mysql systemctl start mysqld # 新生成的root密码保存在日志文件中 grep password /var/log/mysql/mysqld.log
