Some time ago I installed NGINX, php7, mariaDB and Wordpress on my Raspberry Pi running Raspbian.

I created a Wordpress database - which is working.

Recently I installed ssmtp and mailutils on my system to send mail.

Now I get a daily email with the following error

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 '
run-parts: /etc/cron.daily/logrotate exited with return code 1

This mildly annoying. There is no file /var/log/mysql/mysql.log

The root user of mysql does have a password.

What can I do to suppress the error messages?


/etc/cron.daily/logrotate calls /etc/logrotate.conf

which contains

# rotate log files weekly
# packages drop log rotation information into this directory
include /etc/logrotate.d

which includes


# - I put everything in one block and added sharedscripts, so that mysql gets
#   flush-logs'd only once.
#   Else the binary logs would automatically increase by n times every day.
# - The error log is obsolete, messages go to syslog now.
/var/log/mysql/mysql.log /var/log/mysql/mysql-slow.log /var/log/mysql/mariadb-slow.log /var/log/mysql/error.log {
    rotate 7
    create 640 mysql adm
          test -x /usr/bin/mysqladmin || exit 0
          if [ -f `my_print_defaults --mysqld | grep -m 1 -oP "pid-file=\K.+$"` ]; then
            # If this fails, check debian.conf!
            mysqladmin --defaults-file=/etc/mysql/debian.cnf --local flush-error-log \
              flush-engine-log flush-general-log flush-slow-log

/etc/mysql/debian.cnf contains

# Automatically generated for Debian scripts. DO NOT TOUCH!
host     = localhost
user     = root
password = 
socket   = /var/run/mysqld/mysqld.sock
host     = localhost
user     = root
password = 
socket   = /var/run/mysqld/mysqld.sock
basedir  = /usr
  • 2
    Have you checked the /etc/cron.daily/logrotate file to see what the cron job is doing? – Haxiel Jan 23 '19 at 4:47

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