# groupadd mysql# useradd -g mysql mysql

# mkdir /mysql /mysql/data /mysql/log # chown -R mysql:mysql /usr/local/mysql 

#cd /usr/local# tar -zxvf mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz# mv mysql-5.7.19-linux-glibc2.12-x86_64 mysql

# chown -R mysql.mysql mysql

# ls -l mysqltotal 52drwxr-xr-x 2 mysql mysql 4096 Aug 8 04:06 bin-rw-r--r-- 1 mysql mysql 17987 Jun 22 22:13 COPYINGdrwxr-xr-x 2 mysql mysql 4096 Aug 8 04:06 docsdrwxr-xr-x 3 mysql mysql 4096 Aug 8 04:06 includedrwxr-xr-x 5 mysql mysql 4096 Aug 8 04:06 libdrwxr-xr-x 4 mysql mysql 4096 Aug 8 04:06 man-rw-r--r-- 1 mysql mysql 2478 Jun 22 22:13 READMEdrwxr-xr-x 28 mysql mysql 4096 Aug 8 04:06 sharedrwxr-xr-x 2 mysql mysql 4096 Aug 8 04:06 support-files

vim /etc/my.cnf[client]port = 3306socket = /tmp/mysql.sock[mysqld]server_id=10port = 3306user = mysqlcharacter-set-server = utf8mb4default_storage_engine = innodblog_timestamps = SYSTEMsocket = /tmp/mysql.sockbasedir = /usr/local/mysqldatadir = /mysql/datapid-file = /mysql/data/mysql.pidmax_connections = 1000max_connect_errors = 1000table_open_cache = 1024max_allowed_packet = 128Mopen_files_limit = 65535#####====================================[innodb]==============================innodb_buffer_pool_size = 1024Minnodb_file_per_table = 1innodb_write_io_threads = 4innodb_read_io_threads = 4innodb_purge_threads = 2innodb_flush_log_at_trx_commit = 1innodb_log_file_size = 512Minnodb_log_files_in_group = 2innodb_log_buffer_size = 16Minnodb_max_dirty_pages_pct = 80innodb_lock_wait_timeout = 30innodb_data_file_path=ibdata1:1024M:autoextendinnodb_undo_tablespaces=3#####====================================[log]==============================log_error = /mysql/log/mysql-error.log slow_query_log = 1long_query_time = 1 slow_query_log_file = /mysql/log/mysql-slow.logsql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

# ./bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/mysql/data --innodb_undo_tablespaces=3 --explicit_defaults_for_timestamp

cp support-files/mysql.server /etc/init.d/mysqlchkconfig --add mysqlchkconfig mysql onservice mysql start

vi /etc/profile#for mysql mysql_home=/usr/local/mysqlPATH=$PATH:$mysql_home/binsource /etc/profile

grep -i password /mysql/log/mysql-error.log 

mysql -uroot -p‘xxxxx‘SET PASSWORD=PASSWORD(‘root‘);flush privileges;

# mysqladmin -uroot -proot shutdown#mysqld_safe --defaults-file=/etc/my.cnf &#ps -ef|grep mysql

# mysql_secure_installation Securing the MySQL server deployment.Enter password for user root: VALIDATE PASSWORD PLUGIN can be used to test passwordsand improve security. It checks the strength of passwordand allows the users to set only those passwords which aresecure enough. Would you like to setup VALIDATE PASSWORD plugin?Press y|Y for Yes, any other key for No: yThere are three levels of password validation policy:LOW  Length >= 8MEDIUM Length >= 8, numeric, mixed case, and special charactersSTRONG Length >= 8, numeric, mixed case, special characters and dictionary         filePlease enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 2Using existing password for root.Estimated strength of the password: 25 Change the password for root ? ((Press y|Y for Yes, any other key for No) : yNew password: Re-enter new password: Sorry, passwords do not match.New password: Re-enter new password: Sorry, passwords do not match.New password: Re-enter new password: Estimated strength of the password: 50 Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y ... Failed! Error: Your password does not satisfy the current policy requirementsNew password: Re-enter new password: Estimated strength of the password: 100 Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : yBy default, a MySQL installation has an anonymous user,allowing anyone to log into MySQL without having to havea user account created for them. This is intended only fortesting, and to make the installation go a bit smoother.You should remove them before moving into a productionenvironment.Remove anonymous users? (Press y|Y for Yes, any other key for No) : ySuccess.Normally, root should only be allowed to connect from‘localhost‘. This ensures that someone cannot guess atthe root password from the network.Disallow root login remotely? (Press y|Y for Yes, any other key for No) : ySuccess.By default, MySQL comes with a database named ‘test‘ thatanyone can access. This is also intended only for testing,and should be removed before moving into a productionenvironment.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 changesmade so far will take effect immediately.Reload privilege tables now? (Press y|Y for Yes, any other key for No) : ySuccess.All done!