Is there a way to restrict users from accessing a particular database/schema within MySQL?
I want to create a database/schema that only I can access.
I also want to change the password of the "mysql" user but I do not see this user in the mysql.user table even though I was able to use this user to login to mysql.
I tried changing the password of the user by executing the statement -
mysqladmin --user=mysql --password=oldpassword password "newpassword".
But now I am not able to login this user altogether. I've tried both the old and the new passwords.
I am wondering if my changing this password can impact any mysql service running on the system.
For restricting table and schema you can use the GRANT, you can set permission for each user or group on a particular tables for more details :
Tutorial on Grant for mysql
For your access the answer is already on stackoverflow :How do I retrieve my MySQL username and password?
Hope that can help you
Related
How would create another user in my mysql database so another person who is working on my rails application can also get access to the server?
Most articles I found on the question tell me to type in a command like "mysql --user=root mysql -p" that requires a password (https://dev.mysql.com/doc/refman/5.7/en/adding-users.html)
Is there anyway around this?
You can simply create an user without giving a password.
create user 'xxx'#'localhost'
I want to connect to a mysql database from Rapidminer, I am not sure, but to have acces to databases, I have to execute a GRANT ALL string on my mySQL machine first, is that right?
it goes like:
GRANT ALL ON . to user#IPADRESS IDENTIFIED BY 'password';
where IPADRESS should be ipadress of my remote computer, and password is the password of the root login of my mySQL Workbench, is that correct?
but what is the user? I didn't create a user before, and I am trying from rapidminer...
Can you specify a little your question, because I am not sure, if I understand correctly you question.
But: every MySQL connection should have following things:
database name
host
username
password
table name
An user you can create from MySQL workbench, not from RapidMiner. I think, the same database can have multiple users with respective passwords.
How to configure mysql [using phpmyadmin ?] to use one database by the root user without password ?
I have the root user with password. I need the root to access one database without password.
It's not possible to do that. A MySQL user is defined by a combination of host+username+password (not a database name).
Create another MySQL user. In the current phpMyAdmin version, this can be done via the Users menu.
By the way, it's not secure to have a username without password.
Every time I create a database using a custom joomla template quick install the database is created but does not show up in MySQL Database management despite the fact that it most definitely does exist and MySQL database management knows it does because it wont let me create a database with that name due to error "Database already exists".
I want to delete joomlasall database.
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If you can not see database but you are sure that it exists, this is definitely permissions issue.
Do
SHOW GRANTS
More info here
You will see that you does not hold global SELECT privilege.
You need to explicitly GRANT permissions with similar command like:
GRANT ALL PRIVILEGES ON DBNAME.* TO 'username'#'localhost';
Instead of ALL you can specify SELECT, INSERT, UPDATE, DELETE , EXECUTE, etc... check this
replace DBNAME with your DB name, username with user for whom you want to grant access and localhost with hostname if DB is used remotly.
To do this, you need GRANT privilege or to be root user.
use same mysql user credentials for Joomla DB connectivity also the one you are using in phpmyadmin.
I created a different user, when I try to log into mysql it will not let me. I think I am missing a step. I am using windows 7. When I log in it automatically asks me for a password. If I enter the root password I can use mysql. If I enter the password I have created for the user, I get an error I cannot read and the program exits. Do I need to first login as root then somehow log in as new user. I am very confused. The code I used to create the new user is here:
Trouble logging into mysql as non root
Try this:
>> mysql -u USERNAME -p
Press enter, and you'll be prompted for the password for USERNAME.
There is no mysql equivalent to Oracle's 'connect' statement in the sense that allows to switch a user once already logged in to a mysql console session.
You may have created the new user, but not given that user sufficient permissions on the database you're trying to manage.