Linux中mysqly一些問(wèn)題的解決

剛剛裝好linux as 4.
現(xiàn)在面臨的第一個(gè)問(wèn)題就是怎么用上自帶mysql>[root@server tmp] rmp -qa|grep mysql 察看當(dāng)前mysql版本.

一：
當(dāng)我在命令行輸入mysql時(shí)出現(xiàn)了：Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.soc的錯(cuò)誤的話.-
 

解決的辦法是：由于mysql 服務(wù)還沒(méi)有啟動(dòng)。試試看：>>>service mysqld starty

二：
root@localhost www]# service mysqld start
Initializing MySQL database: Neither host 'localhost' nor 'localhost' could be looked up with
/usr/bin/resolveip
Please configure the 'hostname' command to return a correct hostname.
If you want to solve this at a later stage, restart this script with
the --force option
[FAILED]
[root@localhost www]#
處 理：
1、$ ping localhost
ping: unknown host localhost
ping也不成功，確定可能為localhost解析原因。
2、查看/etc/hosts，內(nèi)容如下：
# Do not remove the following line, or various programs
# that require network functionality will fail.
::1 localhost.localdomain localhost
3、將::1修改為127.0.0.1后，啟動(dòng)成功。

三：mysqladmin -u root -p password
想輸入空密碼，但居然說(shuō)
mysqladmin:connect to server at'localhost' failed
erroe:'acces denied for user 'root@127.0.0.1'
試試這個(gè)：>mysql -u root -p 123456
Enter password:123456

或者參考：
使用網(wǎng)上介紹的方法修改root用戶的密碼：
# mysqladmin -uroot -p password 'newpassword'
Enter password:
mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: YES)'

現(xiàn)在終于被我找到了解決方法，如下（請(qǐng)先測(cè)試方法三，謝謝�。�：
方法一：
# /etc/init.d/mysql stop
# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
# mysql -u root mysql
mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';
mysql> FLUSH PRIVILEGES;
mysql> quit

# /etc/init.d/mysql restart
# mysql -uroot -p
Enter password: <輸入新設(shè)的密碼newpassword>
 

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