How to change password of MySql and others?

Hello,

I have configured a two mail servers on openSUSE from here. Now I want to change the password of MySQL and the server. Please tell me step by step how can I do it with out interrupting the services ?

Thanks
Tanvir

 

Assuming you know your current 'root' passwords, to reset your system's 'root' password you need to login to your server via ssh and execute

Code:

# passwd

it will ask you to enter and confirm your new system's 'root' password.

as for resetting the mysql's 'root' password, you need to login to your mysql server as root by executing:

Code:

# mysql -u root -p

once you're in, you need to change the database to 'mysql'

Code:

mysql> use mysql;

and then reset your mysql's 'root' password by executing:

Code:

mysql> update user set Password=PASSWORD('YOUR_NEW_PASS') WHERE User='root';

to quit the mysql shell type:

Code:

mysql> \q

cheers

 

After changing MySQL password will postfix, Apache2, BIND, Dovecot, ISPConfig 3 etc work fine as they are doing now... ?

 

I'm not that familiar with ISPConfig 3 and cannot tell for sure if it or its services use a MySQL database, specifically the 'root' account.

You may want to wait for an answer on this from some one who knows how things work in ISPConfig 3.

anyhow, the services like apache, bind, dovecot, postfix should not be affected by the change of your mysql 'root' password.

 

Thank you rosehosting. I am waiting for someone who knows the answer...

 

Just being curious, If I do as you said then will postfix, Apache2, BIND, Dovecot, ISPConfig 3 work fine as they are working now ?

 

Apache and BIND are fine as they don't use MySQL as backend. For Postfix, Dovecot, and ISPConfig you will have to update the MySQL password in the appropriate configuration files.

 

till has described how to change the for ISPConfig 3. Thanks for that. Can you tell ma how to change for Postfix and Dovecot ?

 

For Postfix, you must modify the mysql*.cf files in the /etc/postfix/ directory. The same has to be done for dovecot.conf (which is either in /etc/or /etc/dovecot/). Restart both daemons afterwards.

 

Thanks for your replay.

• Dovecot:
  • there is no direct password field in dovecot.conf. it is in dovecot-sql.conf.
  • it only uses the Ispconfig user password not the root.
  • However the password in encrypted. can you tell me the encryption method or how can I make like that?

• Postfix:
  • Postfix also do the same. unless I change the ISPConfig's user password, change is not needed. but the encryption is same here.

Thanks for sharing your knowledge with me...

 

Thanks to all

Thanks to everybody for the help.
Please visit this link. I tried to solve it. Now this solution works just fine for me. I guess it might help you.

And feel free to advice or ask questions. We will be pleased to help you.

Thanks
Tanvir