Host 'xxx.xx.xxx.xxx' is not allowed to co

Question

This should be dead simple, but I cannot get it to work for the life of me.
I'm just trying to connect remotely to my MySQL server.

connecting as

mysql -u root -h localhost -p  

works fine, but trying

mysql -u root -h 'any ip address here' -p

fails with the error

ERROR 1130 (00000): Host ''xxx.xx.xxx.xxx'' is not allowed to connect to this MySQL server

In the mysql.user table, there is exactly the same entry for user 'root' with host 'localhost' as another with host '%'.

I'm at my wits' end, and have no idea how to proceed. Any ideas are welcome.

Answer 1

Just use the interface provided by MySql's GUI Tool (SQLyog):

Click on User manager:

Now, if you want to grant access FOR ANY OTHER REMOTE PC, just make sure that, just like in the underneath picture, the Host field value is % (which is the wildcard)

Answer 2

Problem: root@localhost is unable to connect to a fresh installation of mysql-community-server on openSUSE 42.2-1.150.x86_64. Mysql refuses connections - period.

Solution:

$ ls -l /var/lib/mysql/mysql/user.*
-rw-rw---- 1 mysql mysql     0 Apr 29 19:44 /var/lib/mysql/mysql/user.MYD
-rw-rw---- 1 mysql mysql  1024 Apr 29 19:44 /var/lib/mysql/mysql/user.MYI
-rw-rw---- 1 mysql mysql 10684 Apr 29 19:44 /var/lib/mysql/mysql/user.frm

File user.MYD has 0 size (really ?!). I copied all 3 files from another working system.

$ /usr/sbin/rcmysql stop
$ cd /var/lib/mysql/mysql/
$ scp root@othersytem:/var/lib/mysql/mysql/user.* ./
$ /usr/sbin/rcmysql start
$ cd -
$ mysql -u root -p

I was able to log in. Then, it was just a matter of re-applying all schema privileges. Also, if you disabled IPv6, re-enable it temporary so that root@::1 account can also work.

Answer 3

if you are trying to execute mysql query withouth defining connectionstring, you will get this error.

Probably you forgat to define connection string before execution. have you check this out? (sorry for bad english)

Answer 4

Possibly a security precaution. You could try adding a new administrator account:

mysql> CREATE USER 'monty'@'localhost' IDENTIFIED BY 'some_pass';
mysql> GRANT ALL PRIVILEGES ON *.* TO 'monty'@'localhost'
    ->     WITH GRANT OPTION;
mysql> CREATE USER 'monty'@'%' IDENTIFIED BY 'some_pass';
mysql> GRANT ALL PRIVILEGES ON *.* TO 'monty'@'%'
    ->     WITH GRANT OPTION;

Although as Pascal and others have noted it's not a great idea to have a user with this kind of access open to any IP. If you need an administrative user, use root, and leave it on localhost. For any other action specify exactly the privileges you need and limit the accessibility of the user as Pascal has suggest below.

Edit:

From the MySQL FAQ:

If you cannot figure out why you get Access denied, remove from the user table all entries that have Host values containing wildcards (entries that contain '%' or '_' characters). A very common error is to insert a new entry with Host='%' and User='some_user', thinking that this allows you to specify localhost to connect from the same machine. The reason that this does not work is that the default privileges include an entry with Host='localhost' and User=''. Because that entry has a Host value 'localhost' that is more specific than '%', it is used in preference to the new entry when connecting from localhost! The correct procedure is to insert a second entry with Host='localhost' and User='some_user', or to delete the entry with Host='localhost' and User=''. After deleting the entry, remember to issue a FLUSH PRIVILEGES statement to reload the grant tables. See also Section 5.4.4, “Access Control, Stage 1: Connection Verification”.

Answer 5

The message *Host ''xxx.xx.xxx.xxx'' is not allowed to connect to this MySQL server is a reply from the MySQL server to the MySQL client. Notice how its returning the IP address and not the hostname.

If you're trying to connect with mysql -h<hostname> -u<somebody> -p and it returns this message with the IP address, then the MySQL server isn't able to do a reverse lookup on the client. This is critical because thats how it maps the MySQL client to the grants.

Make sure you can do an nslookup <mysqlclient> FROM the MySQL server. If that doesn't work, then there's no entry in the DNS server. Alternatively, you can put an entry in the MySQL server's HOSTS file (<ipaddress> <fullyqualifiedhostname> <hostname> <- The order here might matter).

An entry in my server's host file allowing a reverse lookup of the MySQL client solved this very problem.

Answer 6

Just perform the following steps:

1) Connect to mysql

mysql -uroot -p

2) Create user

CREATE USER 'user'@'%' IDENTIFIED BY 'password';

3) Grant permissions

 GRANT ALL PRIVILEGES ON \*.\* TO 'user'@'%' WITH GRANT OPTION;

4) Flush priviledges

FLUSH PRIVILEGES;