never forget when setting up a mysql user account

mysql_tips Someday ago i was working 2 facebook projects. When I was working on the 2nd facebook project, I just copied the first project architecture. Then I setup the mysql user account for the second project. As the two projects are similar, I thought to remain the username for mysql same for the 2 projects, but when I did that I created a great mistake that I’m describing here.

When I setup my 1st project’s database I use

mysql> GRANT ALL ON fb1.* TO 'simpleuser'@'localhost' IDENTIFIED BY 'simpass123';

Then I used ‘simpleuser’ as user and ‘simpass123’ as password for my first project. And after made it live app, I was working in the second project.
Then I setup mysql account for the same user ‘simpleuser’ for another db.

mysql> GRANT ALL ON fb2.* TO 'simpleuser'@'localhost' IDENTIFIED BY 'abcpass123';

After made it production server, around 30 min my first project remain down, as that project couldn’t connect mysql database. WHY ? What mistake I did?

The mistake was, I used same username but at the second time I changed the password, that changed the existing acccount ‘simpleuser’ password. So, in first project database couldn’t be connect.

So never forget: IDENTIFIED BY ‘difpassowrd’ should be avoided when you’ll use GRANT statement and the same user for different database. Otherwise as it’ll change user’s password, other projects may suffer.

mahmud ahsan

Computer programmer and hobbyist photographer from Bangladesh, lives in Malaysia. My [Github | Business | Twitter | Linkedin | Youtube | Instagram | 500px]

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