分析家 发表于 2018-10-1 08:12:36

navicat连接MYSQL提示Can’t get hostname for your address

  在redhat 5.5上用rpm安装MySQL 5.6装好mysql之后
  用mysqladmin修改密码(mysqladmin –u root password “mysql”)提示
  mysqladmin: Can’t turn off logging; error: ‘Access denied; you need the SUPER privilege for this operation’
  解决办法:
  修改mysql登录设置
  vi /etc/my.cnf   (我们发现etc下没有my.cnf文件)
  通过查询知道,安装完MySQL 后,/etc/my.cnf 文件默认是不存在的,可以在/usr/share/doc/MySQL-servercommunity下找到my-huge.cnf 、my-innodb-heavy-4G.cnf 、my-large.cnf 、mymedium.cnf 、my-small.cnf 等文件,根据内存大小将其中合适你机器配置的文件拷贝到/etc/my.cnf(一般应用选mymedium.cnf即可)
  编辑my.cnf文件
  在段中加入 skip-grant-tables
  保存之后重启mysql服务
  /etc/rc.d/init.d/mysql restart
  重启mysql服务之后修改mysql密码
  # mysql
  Welcome to the MySQL monitor. Commands end with ; or g.

  Your MySQL connection>  Type ‘help;’ or ‘h’ for help. Type ‘c’ to clear the buffer.
  mysql> use mysql ;
  Reading table information for completion of table and column names
  You can turn off this feature to get a quicker startup with -A
  Database changed
  mysql> UPDATE user SET Password = password ( ‘mysql’ ) WHERE User = ‘root’ ;
  Query OK, 0 rows affected (0.00 sec)
  Rows matched: 2 Changed: 0 Warnings: 0
  mysql> flush privileges ;
  Query OK, 0 rows affected (0.01 sec)
  mysql> quit
  Bye
  退出mysql之后把刚修改的配置文件改回来(vi /etc/my.cnf)
  重启mysql服务
  mysql -u root -p登录mysql
  登陆成功!
  再通过navicat连接mysql数据库,提示Can’t get hostname for your address
  解决方法还是修改my.cnf文件,在 下面添加一行:skip-name-resolve ,保存重启mysql(/etc/init.d/mysql restart)
  赋权:
  Mysql –u root –p mysql
  Show databases
  Use mysql

  grant all on *.* to ‘root’@’192.168.1.254′>  quit
  好重新用navicat进行连接,OK,测试通过!

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