無法連線MySQL資料庫錯誤總結
阿新 • • 發佈：2019-01-09
1、可能密碼不對
[[email protected] mysql3311]# mysql -uroot -P3311 -h192.168.60.162 -p123
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 1045 (28000): Access denied for user 'root'@'slave162.netposa' (using password: YES)解決方法：檢查使用者名稱和密碼以及許可權，然後再連線
2、本地連線，密碼許可權都對，但是無法連線
[[email protected] mysql3311]# mysql -uroot -P3311 -p123456
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (111)解決方法：找到資料庫用的sock檔案，然後使用-S引數讓客戶端使用這個檔案，或者是在my.cnf中的[client]下面新增socket配置使其和實際的一樣
[[email protected] mysql3311]# ps -ef|grep mysqld
root 21096 1 0 11:10 pts/1 00:00:00 /bin/sh /usr/local/mysql3311/bin/mysqld_safe --datadir=/usr/local/mysql3311/data --pid-file=/usr/local/mysql3311/data/slave162.netposa.pid
mysql 21353 21096 0 11:10 pts/1 00:00:00 /usr/local/mysql3311/bin/mysqld --basedir=/usr/local/mysql3311 --datadir=/usr/local/mysql3311/data --plugin-dir=/usr/local/mysql3311/lib/plugin --user=mysql --log-error=/usr/local/mysql3311/data/slave162.netposa.err --pid-file=/usr/local/mysql3311/data/slave162.netposa.pid --socket=/tmp/mysql3311.sock --port=3311
root 21658 16517 0 11:25 pts/1 00:00:00 grep mysqld
[ 或者修改 /etc/my.cnf，在[client]下新增socket=/tmp/mysql3311.sock
[[email protected] mysql3311]# vim /etc/my.cnf
[[email protected] mysql3311]#
[[email protected] mysql3311]#
[[email protected] mysql3311]#
[[email protected] mysql3311]# mysql -uroot -P3311 -p123456
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 11
Server version: 5.7.14-log MySQL Community Server (GPL)
Copyright (c) 2000, 2016, 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>
mysql> 3、防火牆可能導致下面錯誤
[[email protected] ~]# mysql -uroot -P3311 -h192.168.60.162 -p123456
ERROR 2003 (HY000): Can't connect to MySQL server on '192.168.60.162' (113)錯誤原因：遠端連線的時候，可能會因為防火牆，導致無法連線資料庫。
解決方法：要麼配置防火牆，要麼關閉防火牆。