1、安裝
[root@RAC2 mysql]# rpm -ivh MySQL-server-5.6.12-2.rhel5.x86_64.rpm
Preparing... ########################################### [100%]
1:MySQL-server ########################################### [100%]
[root@RAC2 mysql]# rpm -ivh MySQL-client-5.6.12-2.rhel5.x86_64.rpm
Preparing... ########################################### [100%]
1:MySQL-client ########################################### [100%] 2、安裝完查看默認3306端口沒有開
[root@RAC2 mysql]# netstat -nat
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:833 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
tcp 0 0 :::22 :::* LISTEN
tcp 0 0 ::ffff:192.168.72.5:22 ::ffff:192.168.72.1:63851 ESTABLISHED
tcp 0 0 ::ffff:192.168.72.5:22 ::ffff:192.168.72.1:62929 ESTABLISHED 3、將mysql啟動
[root@RAC2 init.d]# service mysql start
Starting MySQL..[確定] 4、再次確認端口是打開的
[root@RAC2 init.d]# netstat -nat
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:833 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
tcp 0 0 :::3306 :::* LISTEN
tcp 0 0 :::22 :::* LISTEN
tcp 0 0 ::ffff:192.168.72.5:22 ::ffff:192.168.72.1:63851 ESTABLISHED
tcp 0 0 ::ffff:192.168.72.5:22 ::ffff:192.168.72.1:62929 ESTABLISHED 5、連接mysql
[root@RAC2 bin]# mysql -u root
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) 在網上查資料，可以這樣來解決：
[root@RAC2 bin]# /etc/init.d/mysql stop
Shutting down MySQL..[確定]
[root@RAC2 bin]# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
[1] 6025
[root@RAC2 bin]# 130716 19:00:36 mysqld_safe Logging to '/var/lib/mysql/RAC2.err'.
130716 19:00:36 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql [root@RAC2 bin]# mysql -u root mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.6.12 MySQL Community Server (GPL) Copyright (c) 2000, 2013, 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 databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.00 sec) mysql> use mysql;
Database changed
mysql> show tables;
+---------------------------+
| Tables_in_mysql |
+---------------------------+
| columns_priv |
| db |
| event |
| func |
| general_log |
| help_category |
| help_keyword |
| help_relation |
| help_topic |
| innodb_index_stats |
| innodb_table_stats |
| ndb_binlog_index |
| plugin |
| proc |
| procs_priv |
| proxies_priv |
| servers |
| slave_master_info |
| slave_relay_log_info |
| slave_worker_info |
| slow_log |
| tables_priv |
| time_zone |
| time_zone_leap_second |
| time_zone_name |
| time_zone_transition |
| time_zone_transition_type |
| user |
+---------------------------+
28 rows in set (0.00 sec) mysql> desc user;
+------------------------+-----------------------------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+------------------------+-----------------------------------+------+-----+---------+-------+
| Host | char(60) | NO | PRI | | |
| User | char(16) | NO | PRI | | |
| Password | char(41) | NO | | | |
| Select_priv | enum('N','Y') | NO | | N | |
| Insert_priv | enum('N','Y') | NO | | N | |
| Update_priv | enum('N','Y') | NO | | N | |
| Delete_priv | enum('N','Y') | NO | | N | |
| Create_priv | enum('N','Y') | NO | | N | |
| Drop_priv | enum('N','Y') | NO | | N | |
| Reload_priv | enum('N','Y') | NO | | N | |
| Shutdown_priv | enum('N','Y') | NO | | N | |
| Process_priv | enum('N','Y') | NO | | N | |
| File_priv | enum('N','Y') | NO | | N | |
| Grant_priv | enum('N','Y') | NO | | N | |
| References_priv | enum('N','Y') | NO | | N | |
| Index_priv | enum('N','Y') | NO | | N | |
| Alter_priv | enum('N','Y') | NO | | N | |
| Show_db_priv | enum('N','Y') | NO | | N | |
| Super_priv | enum('N','Y') | NO | | N | |
| Create_tmp_table_priv | enum('N','Y') | NO | | N | |
| Lock_tables_priv | enum('N','Y') | NO | | N | |
| Execute_priv | enum('N','Y') | NO | | N | |
| Repl_slave_priv | enum('N','Y') | NO | | N | |
| Repl_client_priv | enum('N','Y') | NO | | N | |
| Create_view_priv | enum('N','Y') | NO | | N | |
| Show_view_priv | enum('N','Y') | NO | | N | |
| Create_routine_priv | enum('N','Y') | NO | | N | |
| Alter_routine_priv | enum('N','Y') | NO | | N | |
| Create_user_priv | enum('N','Y') | NO | | N | |
| Event_priv | enum('N','Y') | NO | | N | |
| Trigger_priv | enum('N','Y') | NO | | N | |
| Create_tablespace_priv | enum('N','Y') | NO | | N | |
| ssl_type | enum('','ANY','X509','SPECIFIED') | NO | | | |
| ssl_cipher | blob | NO | | NULL | |
| x509_issuer | blob | NO | | NULL | |
| x509_subject | blob | NO | | NULL | |
| max_questions | int(11) unsigned | NO | | 0 | |
| max_updates | int(11) unsigned | NO | | 0 | |
| max_connections | int(11) unsigned | NO | | 0 | |
| max_user_connections | int(11) unsigned | NO | | 0 | |
| plugin | char(64) | YES | | | |
| authentication_string | text | YES | | NULL | |
| password_expired | enum('N','Y') | NO | | N | |
+------------------------+-----------------------------------+------+-----+---------+-------+
43 rows in set (0.00 sec) mysql> select hosr,user,password from user;
ERROR 1054 (42S22): Unknown column 'hosr' in 'field list'
mysql> select host,user,password from user;
+-----------+------+-------------------------------------------+
| host | user | password |
+-----------+------+-------------------------------------------+
| localhost | root | *34F5F8A5C7F9EA100FB15F7FCF1BC31271C3D43C |
| RAC2 | root | *34F5F8A5C7F9EA100FB15F7FCF1BC31271C3D43C |
| 127.0.0.1 | root | *34F5F8A5C7F9EA100FB15F7FCF1BC31271C3D43C |
| ::1 | root | *34F5F8A5C7F9EA100FB15F7FCF1BC31271C3D43C |
+-----------+------+-------------------------------------------+
4 rows in set (0.00 sec) mysql> update user set password=password('root123') where user='root' and host='localhost';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0 mysql> commit
-> ;
Query OK, 0 rows affected (0.00 sec) 執行下面這一句，是因為上面使表處于：The MySQL server is running with the --skip-grant-tables option，如果不執行下面這句，即使連上數據庫也執行不了操作。
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec) mysql> quit
Bye
[root@RAC2 bin]# /etc/init.d/mysql restart
Shutting down MySQL..130716 19:03:34 mysqld_safe mysqld from pid file /var/lib/mysql/RAC2.pid ended
[確定]
Starting MySQL..[確定]
[1]+ Done mysqld_safe --user=mysql --skip-grant-tables --skip-networking
[root@RAC2 bin]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.12 Copyright (c) 2000, 2013, 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>
下面這步有點詭異啊~
mysql> use mysql; ERROR 1820 (HY000): You must SET PASSWORD before executing this statement
mysql> show databases;
ERROR 1820 (HY000): You must SET PASSWORD before executing this statement mysql> set password=PASSWORD('root123');
Query OK, 0 rows affected (0.00 sec) mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.00 sec)

轉載于:https://www.cnblogs.com/zhaoshuangshuang/p/3194046.html

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