執行環境： oracle linux server release 6.4
mysql ver 14.14 distrib 5.1.66
1. 登入mysql
[root@test /]# mysql -u root -p
enter password:
welcome to the mysql monitor. commands end with ; or \g.
your mysql connection id is 92
server version: 5.1.66 source distribution
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>
2. 使用命令show global variables like 'port';檢視埠號
mysql> show global variables like 'port';
+---------------+-------+
| variable_name | value |
+---------------+-------+
| port | 3306 |
+---------------+-------+
1 row in set (0.00 sec)
[root@test etc]# vi my.cnf
[mysqld]
port=3506
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
"my.cnf" 11l, 261c written
[root@test etc]#
4. 重新啟動mysql
[root@test ~]# /etc/init.d/mysqld restart
stopping mysqld: [ ok ]
starting mysqld: [ ok ]
5.再次登入後檢查埠已修改為』3506』.
[root@test etc]# mysql -u root -p
enter password:
welcome to the mysql monitor. commands end with ; or \g.
your mysql connection id is 2
server version: 5.1.66 source distribution
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 global variables like 'port';
+---------------+-------+
| variable_name | value |
+---------------+-------+
| port |
3506|
+---------------+-------+
1 row in set (0.00 sec)
mysql>
總結：注意修改的埠不要被占用，而且要有規劃，不要輕意的總是調整資料庫埠。還有就是安全保障，記得與負責網路的人提前通知，以免埠無法正常使用。
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