[SOLVED] mysqsl installation problem

michaelk · 09-13-2016, 03:13 PM

What you see is what is supposed to happen. A server in an nutshell works in the background. The client like mysql talks to the server. What do you want to do?

What happens when you try the command:

mysql -u root

zillur · 09-13-2016, 03:19 PM

Code:

[zillur@genomics etc]$ mysql -u root
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

michaelk · 09-13-2016, 03:33 PM

Code:

your my.cnf
socket=/var/run/mysqld/mysql.sock

Should be
socket=/var/lib/mysql/mysql.sock

If mysqld will not start when using the correct socket then you probably still have a permission problem. Be sure to shutdown and restart.

zillur · 09-13-2016, 04:21 PM

Thank you very much for you comments. After the right socket:

Code:

[zillur@genomics etc]$ systemctl restart mysqld
[zillur@genomics etc]$ mysql -u root
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

Maybe permission problem! What should I do now?

Best Regards
Zillur

Habitual · 09-13-2016, 04:34 PM

Quote:

Originally Posted by zillur

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)[/CODE]
Maybe permission problem! What should I do now?

Best Regards
Zillur

https://help.ubuntu.com/community/MysqlPasswordReset

michaelk · 09-13-2016, 04:48 PM

You also run the mysql-secure-installation script from a previous post.

keefaz · 09-13-2016, 04:55 PM

Quote:

Originally Posted by michaelk

Code:

your my.cnf
socket=/var/run/mysqld/mysql.sock

Should be
socket=/var/lib/mysql/mysql.sock

I don't totally agree /var/run/mysqld seems a more logical place to put the runtime objects (server pid and socket) required by mysqld

I know you're right, set socket to /var/lib/mysql/mysql.sock is a working solution in this case though

Maybe the socket setting was different in client and server configuration files
(socket set to /var/lib/mysql/mysql.sock in client.cnf)
In my system, client settings would be stored in /etc/my.cnf.d/client.cnf, or in any configuration file under ' [client] ' markup

keefaz · 09-13-2016, 04:57 PM

Quote:

Originally Posted by zillur

Thank you very much for you comments. After the right socket:

Code:

[zillur@genomics etc]$ systemctl restart mysqld
[zillur@genomics etc]$ mysql -u root
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

Maybe permission problem! What should I do now?

Best Regards
Zillur

You need the -p switch and enter mysql root user password

Code:

mysql -u root -p
(enter mysql root password)

Habitual · 09-13-2016, 05:04 PM

Quote:

Originally Posted by keefaz

You need the -p switch and enter mysql root user password

Thanks. I missed it.

/var/run/mysqld/mysqld.sock on a couple of hosts (servers) I checked.

zillur · 09-13-2016, 05:05 PM

Thank you very much. I have done the secure installation.

Code:

[zillur@genomics bin]$ ./mysql_secure_installation 



NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
      SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!

In order to log into MySQL to secure it, we'll need the current
password for the root user.  If you've just installed MySQL, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.

Enter current password for root (enter for none): 
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MySQL
root user without the proper authorisation.

You already have a root password set, so you can safely answer 'n'.

Change the root password? [Y/n] n
 ... skipping.

By default, a MySQL installation has an anonymous user, allowing anyone
to log into MySQL without having to have a user account created for
them.  This is intended only for testing, and to make the installation
go a bit smoother.  You should remove them before moving into a
production environment.

Remove anonymous users? [Y/n] n
 ... skipping.

Normally, root should only be allowed to connect from 'localhost'.  This
ensures that someone cannot guess at the root password from the network.

Disallow root login remotely? [Y/n] Y
 ... Success!

By default, MySQL comes with a database named 'test' that anyone can
access.  This is also intended only for testing, and should be removed
before moving into a production environment.

Remove test database and access to it? [Y/n] n
 ... skipping.

Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.

Reload privilege tables now? [Y/n] Y
 ... Success!




All done!  If you've completed all of the above steps, your MySQL
installation should now be secure.

Thanks for using MySQL!


Cleaning up...

Code:

All done!  If you've completed all of the above steps, your MySQL
installation should now be secure.

Thanks for using MySQL!


Cleaning up...
[zillur@genomics bin]$ mysql -u root
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
[zillur@genomics bin]$

But the problem still persists. What should I do now.

Code:

[zillur@genomics bin]$ mysql -u root
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
[zillur@genomics bin]$ mysql -u root -p
Enter password: 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
[zillur@genomics bin]$ mysql -u root -p
Enter password: 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

Best Regards
Zillur

michaelk · 09-13-2016, 05:10 PM

True, you can specify the socket anywhere as long as the client configuration matches the server. IMO it was easier to go back to the mysql default instead of possibly confusing the OP with additional configurations.

Are you using the correct password? mysql root user is not the same thing as the superuser root.

zillur · 09-13-2016, 05:12 PM

Code:

[zillur@genomics bin]$ mysql -u root -p
Enter password: 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
[zillur@genomics bin]$ mysql -u root -p
Enter password: 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

michaelk · 09-13-2016, 05:18 PM

Did you really set a mysql root password?

mysql root user is not the same thing as the superuser root.

zillur · 09-13-2016, 05:22 PM

Thank you very much.

Quote:

Did you really set a mysql root password?

How can I be sure that I set the root password for mysql? When I ran secure_installation, I set a password and here using the same password.

Quote:

[zillur@genomics bin]$ ./mysql_secure_installation

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!

In order to log into MySQL to secure it, we'll need the current
password for the root user. If you've just installed MySQL, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.

Enter current password for root (enter for none):
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MySQL
root user without the proper authorisation.

You already have a root password set, so you can safely answer 'n'.

Change the root password? [Y/n] n
... skipping.

keefaz · 09-13-2016, 05:31 PM

you entered a password here?

Code:

Enter current password for root (enter for none):

If yes, you entered same password with mysql -u root -p ?