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Re: error: 'Access denied for user 'root'@'localhost' (using password: NO)'

On Sun, 26 Nov 2017 16:35:24 +0100
Ulf Volmer <u.volmer@u-v.de> wrote:

> On 26.11.2017 15:57, Rainer Dorsch wrote:
> > mysqladmin: connect to server at 'localhost' failed
> > error: 'Access denied for user 'root'@'localhost' (using password:
> > NO)' error: error running shared postrotate script for
> > '/var/log/mysql/mysql.log /
> > var/log/mysql/mysql-slow.log /var/log/mysql/mariadb-slow.log /var/log/mysql/
> > error.log '  
> did you have manual changes in /etc/logrotate.d/mysql-server or
> /etc/mysql/debian.cnf? in the last file you will find the credentials
> for the user debian-sys-maint who is used for maintenance tasks.
> i'm surprised that in the error message above the root user is used.

That may suggest a mismatch of versions: the logrotate script uses the
mysqladmin --defaults-file option, which specifies debian-sys-maint in
the /etc/mysql/debian.cnf file. 

Old versions of mysqladmin don't have the --defaults-file option
defined, so may be looking for the root user. A check of man mysqladmin
on the offending machine should confirm whether the options include

It does on my old mysql-client 5.5.58 installation and my shiny new
mariadb-client 10.0.28 but does not on a mysql 5.5 man page found on
the Net, and may not be in an early mariadb client, I don't know.


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