When I try
sudo mysql -uroot -p
I get no errors, but it appears I'm not logged in as root, since:
SELECT USER(),CURRENT_USER();
returns:
+----------------+----------------+
| USER() | CURRENT_USER() |
+----------------+----------------+
| root#localhost | #localhost |
+----------------+----------------+
and I'm unable to perform any administrative commands like GRANT or UPDATE, I can only view information_schema table.
http://dev.mysql.com/doc/refman/4.1/en/information-functions.html#function_current-user says:
The value of CURRENT_USER() can differ from the value of
USER(). ... One way this might occur is that there is no
account listed in the grant tables for davida.
If you can't login as root, you can start MySQL without permissions checks: How to start MySQL with --skip-grant-tables? or start mysql with a init file http://dev.mysql.com/doc/refman/5.0/en/resetting-permissions.html. For the second option, you should use INSERT instead of UPDATE since your table doesn't have the root user.
Related
how do I grant a new user the privilege to create a new database in MySQL
Specifically:
the database does not exist yet
I have successfuly created a new DB user account (that is not admin)
I want that non-admin user to create a new database
I do NOT want the 'admin' user to create the database and then grant privs to the database to the new user
as 'admin', I want to grant the new user the privilege to create a new database
I do not want to grant the new user any additional privileges on existing databases
This is not covered anywhere in the documentation that I can find.
Monday 2022-04-04
Update:
I created user 'scott' and then logged in as MySQL user 'admin' When I run this command
Note: The 'test' database does not yet exist
mysql>GRANT CREATE ON test.* to 'scott'#'localhost';
I get an error
==> ERROR 1410 (42000): You are not allowed to create a user with GRANT
Why do I get this error? I am not attempting to create a user, but rather grant a user access to a non-existent database (as is the approach with MySQL to grant a user privileges to create a database).
If up update the SQL statement to:
mysql>GRANT CREATE ON test.* to scott;
It runs OK
Query OK, 0 rows affected (0.07 sec)
And so now I login as user 'scott and run this statement:
mysql>create database rum;
==> ERROR 1049 (42000): Unknown database 'test'
Why do I get this error?
At this point, I am still not able to create a database as a non-admin user.
Example: grant "scott" the privilege to create the test3 database, which does not exist yet:
mysql> select user();
+----------------+
| user() |
+----------------+
| root#localhost |
+----------------+
mysql> grant create on test3.* to 'scott'#'localhost';
Query OK, 0 rows affected (0.01 sec)
Now try as scott to create the database:
mysql> select user();
+-----------------+
| user() |
+-----------------+
| scott#localhost |
+-----------------+
mysql> show grants;
+---------------------------------------------------------+
| Grants for scott#localhost |
+---------------------------------------------------------+
| GRANT USAGE ON *.* TO `scott`#`localhost` |
| GRANT ALL PRIVILEGES ON `test`.* TO `scott`#`localhost` |
| GRANT CREATE ON `test3`.* TO `scott`#`localhost` |
+---------------------------------------------------------+
mysql> create database test3;
Query OK, 1 row affected (0.00 sec)
mysql> use test3;
Database changed
MySQL has one privilege called CREATE which is for creating both databases and tables. See https://dev.mysql.com/doc/refman/8.0/en/privileges-provided.html#priv_create
You can either grant the user privilege to create a database of a specific name, or else grant them the privilege to create a database of any name, but that means they can also create other tables, either in the new database or in other existing databases. Sorry, there may not be a solution for you to allow them to create any new database without specifying the name when you grant the privilege, but then only have privilege in that database.
You are not allowed to create a user with GRANT
You did not create the user scott. Older versions of MySQL allows GRANT to implicitly create a user if one does not exist, but that has been disabled on more recent versions because folks realized it is a security weakness.
To be clear, the user "scott" is just an example I used. Don't literally use the name "scott" if that's not the user to whom you want to grant privileges.
The other errors you got seem to be that you granted the user privileges on a database named test.* but then you tried to create a database with a different name. The example I showed only grants the privilege to create the specific named database, not a database named rum or any other database.
I understand you want to grant privilege to create a database of any name. The syntax for that would be GRANT CREATE ON *.* TO... but that would grant the user privileges on all the other existing databases too.
There is no combination of syntax to grant privileges on any database name wildcard that means any database, provided that it is not yet created.
This question already has answers here:
Can't find any matching row in the user table
(4 answers)
Closed 3 years ago.
I logged in as root with
sudo mysql -u root
and created a database xxx with this command:
CREATE DATABASE xxx;
I want to give privileges to user webuser on xxx with this command:
GRANT ALL PRIVILEGES ON xxx.* TO 'webuser'#'localhost';
I'm getting this messages:
ERROR 1133 (42000): Can't find any matching row in the user table
What am I doing wrong?
Additional information:
The user already exists. This:
mysql> SELECT User, Host FROM mysql.user WHERE User='webuser';
outputs as:
+---------+------+
| User | Host |
+---------+------+
| webuser | % |
+---------+------+
1 row in set (0.00 sec)
it's better to use this link create user and add privileges
or just before run this command
GRANT ALL PRIVILEGES ON xxx.* TO 'webuser'#'localhost'
you should do this
CREATE USER 'webuser'#'localhost' IDENTIFIED BY 'password'
with this command you add the webuser in the mysql user on localhost with the password of 'password'
and after that add privileges to your user
I have two users, let's call them foo on two different databases:
Database_A:
mysql> select user,host from user where user = 'foo';
+-----------+-----------+
| user | host |
+-----------+-----------+
| foo | % |
| foo | 10.% |
| foo | localhost |
+-----------+-----------+
3 rows in set (0.01 sec)
Database_B:
mysql> select user,host from user where user = 'foo';
+-----------+-----------+
| user | host |
+-----------+-----------+
| foo | % |
| foo | 10.% |
| foo | localhost |
+-----------+-----------+
3 rows in set (0.00 sec)
Now the issue I am running into is trying to run a SQL script w/ the DROP command. When I connect to the database on Database_A, I get an error trying to connect:
mysql -A -hdatabase_1.foo.bar.domain.com -ufoo -pbar Database_A <dbtables.sql
Warning: Using a password on the command line interface can be insecure.
ERROR 1142 (42000) at line 22: DROP command denied to user 'foo'#'ip-10-128-0-143.ec2.internal' for table 'bar_table'
I can run this on the Database_B w/ no issues. So far, I have checked with the grants on both users and have logged into the MySQL shell w/ the same user and grants (foo#'10.%') but I can't run the SQL script on database_1. Here are what the grants look like for both Database_A and Database_B:
mysql> show grants for foo;
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Grants for foo#% |
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| GRANT SELECT, RELOAD ON *.* TO 'foo'#'%' IDENTIFIED BY PASSWORD '<redacted>' REQUIRE SSL |
| GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, REFERENCES, INDEX, ALTER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, CREATE ROUTINE, ALTER ROUTINE ON `reference`.* TO 'foo'#'%' |
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
mysql> show grants for foo#'10.%';
+------------------------------------------------------------------------------------------------------------+
| Grants for foo#10.% |
+------------------------------------------------------------------------------------------------------------+
| GRANT FILE ON *.* TO 'foo'#'10.%' IDENTIFIED BY PASSWORD '<redacted>' |
+------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
Now I can't seem to figure out why one database server would work vs the other one (both are set up exactly the same w/ the user and in the my.cnf). Is there a way where I can log in specifically as foo#'%'? I am trying to run this from a remote EC2 instance (same VPC):
mysql -A -hdatabase_1.foo.bar.domain.com -ufoo -pbar Database_A <dbtables.sql
No, you can't force connection as a particular user profile. MySQL uses the first matching profile, according to its sort order.
Read https://dev.mysql.com/doc/refman/8.0/en/connection-access.html:
When multiple matches are possible, the server must determine which of
them to use. It resolves this issue as follows:
Whenever the server reads the user table into memory, it sorts the rows.
When a client attempts to connect, the server looks through the rows in sorted order.
The server uses the first row that matches the client host name and user name.
The server uses sorting rules that order rows with the most-specific
Host values first. Literal host names and IP addresses are the most
specific. (The specificity of a literal IP address is not affected by
whether it has a netmask, so 198.51.100.13 and
198.51.100.0/255.255.255.0 are considered equally specific.) The pattern '%' means “any host” and is least specific. The empty string
'' also means “any host” but sorts after '%'. Rows with the same Host
value are ordered with the most-specific User values first (a blank
User value means “any user” and is least specific). For rows with
equally-specific Host and User values, the order is nondeterministic.
I would avoid giving different privileges to the same username, differing only by the hostname.
Even though MySQL allows you to define different privileges depending on the client host, it's confusing to manage your authorizations this way. I've never seen a good reason to do that.
If you need a distinct set of privileges, define a distinct username.
I'd like to create a user who has all privileges with his own database in MySQL.
When I use this user to create a table, MySQL returns that the SQL server is running with read-only option.
However when I changed to an another existing user with all privileges on *.*, I can create table without error.
I'm wondering if the read-only option is global or what?
The following is my MySQL commands using MySQL root:
mysql> create user 'demo'#'localhost' identified by 'demo';
mysql> create database demo;
mysql> grant all privileges on demo.* to demo#localhost;
mysql> show grants for demo#localhost;
+-------------------------------------------------------------------------------------------------------------------+
| Grants for demo#localhost |
+-------------------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'demo'#'localhost' IDENTIFIED BY PASSWORD '*demo-hashed*' |
| GRANT ALL PRIVILEGES ON `demo`.* TO 'demo'#'localhost' |
+-------------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
Then I switched to user "demo":
mysql> use demo;
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> create table t(t1 int);
ERROR 1290 (HY000): The MySQL server is running with the --read-only option so it cannot execute this statement
So I checked the read-only option, and it seems to be on.
However then I tried using another user with privileges on *.* and I can create tables successfully.
The another user grant setting:
mysql> show grants for demo2#'%';
+-----------------------------------------------------------------------------------------------------------------+
| Grants for demo2#% |
+-----------------------------------------------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'demo2'#'%' IDENTIFIED BY PASSWORD '*demo2-hased*' |
+-----------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
MySQL version:
mysql> select version();
+------------------------+
| version() |
+------------------------+
| 5.1.68.0 |
+------------------------+
1 row in set (0.00 sec)
BTW, after I set read_only = 0 I can use demo to create table. I just don't know why the demo2 can create table while read-only is on.
Thanks!
Please check the My.cnf for Linux or My.ini for windows under [mysqld] remove read only parameters then restart the service and try again that will solve the read only problem, but if you create table in read only that will be a temp table.
I'm using MySQL 5.5.16 noinstall Zip Archive on Win7.
After I started the server, the command show databases showed me a list of 2 databases: information_schema and test. The latter is empty.
Where is the table user?
I tried to create a new user through this command create user newUser; and got the following error message: ERROR 1227 (42000): Access denied; you need (at least one of) the CREATE USER privilege(s) for this operation
What should I do to create, databases, tables, and do all the operations I want to do? I don't know if the fact that I'm using MySQL 5.5.16 noinstall Zip Archive has something to do with the error message?
First thing to do is run this:
SHOW GRANTS;
You will quickly see you were assigned the anonymous user to authenticate into mysql.
Instead of logging into mysql with
mysql
login like this:
mysql -uroot
By default, root#localhost has all rights and no password.
If you cannot login as root without a password, do the following:
Step 01) Add the two options in the mysqld section of my.ini:
[mysqld]
skip-grant-tables
skip-networking
Step 02) Restart mysql
net stop mysql
<wait 10 seconds>
net start mysql
Step 03) Connect to mysql
mysql
Step 04) Create a password from root#localhost
UPDATE mysql.user SET password=password('whateverpasswordyoulike')
WHERE user='root' AND host='localhost';
exit
Step 05) Restart mysql
net stop mysql
<wait 10 seconds>
net start mysql
Step 06) Login as root with password
mysql -u root -p
You should be good from there.
CAVEAT: Please remove anonymous users !!!
For me the issue was ( for a very strange reason ) the fact that root had Host of % instead of localhost
I received the above error when trying to DROP USER;
Privileges as suggested in the answer above - I already had, so the solution wasn't suitable for me.
The DB looked like this:
mysql> drop user 'testuser'#'%';
ERROR 1227 (42000): Access denied; you need (at least one of) the SYSTEM_USER privilege(s) for this operation
mysql> select Host,User,drop_priv from user;
+------+------------------+-----------+
| Host | User | drop_priv |
+------+------------------+-----------+
| % | mysql.infoschema | N |
| % | mysql.session | N |
| % | mysql.sys | N |
| % | root | Y |
+------+------------------+-----------+
And
mysql> SHOW GRANTS FOR 'root'#'%';
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Grants for root#% |
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, RELOAD, SHUTDOWN, PROCESS, FILE, REFERENCES, INDEX, ALTER, SHOW DATABASES, SUPER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, REPLICATION SLAVE, REPLICATION CLIENT, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, CREATE USER, EVENT, TRIGGER, CREATE TABLESPACE, CREATE ROLE, DROP ROLE ON *.* TO `root`#`%` WITH GRANT OPTION |
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
I tried many things, but eventually I changed the Host from % to localhost for security concerns, nothing else.
mysql> UPDATE user SET Host='localhost' WHERE user='root' LIMIT 1;
Query OK, 1 row affected (0.03 sec)
Rows matched: 1 Changed: 1 Warnings: 0
I don't know why, but it worked.
mysql> quit
$ mysql -u root -p
.. ENTER (NO PASSWORD) ..
mysql> drop user 'testuser'#'%';
Query OK, 0 rows affected (0.02 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.02 sec)
No idea why, but hope it will help others ...
I'm using CentOS which has SELinux and other stuff, which maybe other components are correlated with this. don't know.