mysql Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’

linux 環境下。所有資料庫以及使用者資訊的存放位置可以在（vim /etc/my.cnf）查看[datadir=/usr/local/mysql_data ].

讀取不到資料庫資訊(原因:移動datadir過程中許可權也改變了［chown mysql:mysql -R datadir］) ,datadir是你的存放路徑。
 

代碼如下	複製代碼
ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’

(2),解決方案[查看是不是存在該檔案。修改相應的路徑 vim /etc/my.cnf，查看是不是許可權不對.ls -l ].

代碼如下	複製代碼
ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’

(111),解決方案[修改相應的路徑 vim /etc/my.cnf]

添加下面這段:

代碼如下	複製代碼
port            = 3306 socket          = /var/lib/mysql_data/mysql.sock

mysql 資料表使用中,錯誤提示:”martin” is marked as crashed and should be repaired
解決方案:

進入mysql的data目錄,在命令列執行:myisamchk -c -r martin.MYI

mysql允許遠端連線方法:在添加mysql使用者的時候host選現修改成”%”就可以了。
以後遇到的mysql問題會一併添加上來.

網路上其它 方法

問題終於解決：

方法：    修改/etc/my.conf:

代碼如下	複製代碼
[mysqld] datadir=/usr/local/mysql/data socket=/var/lib/mysql/mysql.sock [mysql.server] user=mysql basedir=/usr/local/mysql If there is not currently a section called [client], add one at the bottom of the file and copy the socket= line under the [mysqld] section such as: [client] socket=/var/lib/mysql/mysql.sock

發現依舊如此，運行/etc/init.d/mysql start

報錯：Starting MySQLCouldn't find MySQL manager or server
是mysqld服務沒啟，運行

代碼如下	複製代碼
/usr/local/mysql/bin/mysqld_safe

問題解決了

官網的一點解決辦法

if you are new to installing mysql server you might probably face this error quite often if you type mysql in the shell prompt.

代碼如下	複製代碼
> mysql ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'

To fix:

First start the mysql daemon, then type mysql

代碼如下	複製代碼
> /etc/init.d/mysqld start > mysql

Bingo! It worked for me!

To update mysql root password

代碼如下	複製代碼
mysql> USE mysql; mysql> UPDATE user SET Password=PASSWORD('new-password') WHERE user='root'; mysql> FLUSH PRIVILEGES;

To add a new user to mysql

1. First login as root then create a database ‘demo’

> mysql -u root -p

代碼如下	複製代碼
Enter password: mysql> create database demo;

After that create a new user named ‘guest’ with password ‘guest’ with all previleges assigned to demo database;

代碼如下	複製代碼
mysql> GRANT ALL PRIVILEGES ON mytest.* TO 'guest'@'localhost' IDENTIFIED BY 'guest' WITH GRANT OPTION;

Then exit mysql and connect through username guest;
That should work!

Note:  This could happen, if you run out of your disk space.  Check your disk space.