如何檢視mysql 預設埠號和修改埠號 2015-03-19 17:42:18


1. 登入mysql

[[email protected] /]# mysql -u root -p
Enter password:


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)


3. 修改埠，編輯/etc/my.cnf檔案，早期版本有可能是my.conf檔名，增加埠引數，並且設定埠，注意該埠未被使用，儲存退出。

[
 
[email protected] 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
[
 
[email protected] etc]#

4. 重新啟動mysql

[[email protected] ~]# /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’.

[[email protected] 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

Copyright (c) 2000, 2012, 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 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佔用，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。