server 12.04 can't connect to MySQL

[Cheesemill]

Can you check if mysql is actually listening for connections on port 3306...

netstat -anp | grep -i mysql

[The Cog]

I don't think that will show anything unless run with sudo because listing process names is privileged. Can I suggest this command:

netstat -lnt

and look for port 3306. It should be listening on 0.0.0.0, not 127.0.0.1.

After changing mysql.conf, you need to restart the mysql service for the change to take effect.

[bart.a]

Unfortunately I need to connect from a windows machine, I could test it from an ubuntu machine though, but I don't have it here now..

Output for netstat -anp | grep -i mysql

tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      7695/mysqld
unix  2      [ ACC ]     STREAM     LISTENING     19040    7695/mysqld         /var/run/mysqld/mysqld.sock

Output for netstat -lnt

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:139             0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:1105            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:445             0.0.0.0:*               LISTEN
tcp6       0      0 :::1105                 :::*                    LISTEN

I have tried connecting via LibreOffice directly using the openoffice mysql-connector but that doesn't connect either..

[Cheesemill]

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
 tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:139             0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:1105            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:445             0.0.0.0:*               LISTEN
tcp6       0      0 :::1105                 :::*                    LISTEN

This line seems to say that mysql is only listening on localhost.

Can you post the contents of your /etc/mysql/my.cnf please.

[bart.a]

Output /etc/mysql/my.cnf

#
# The MySQL database server configuration file.
#
# You can copy this to one of:
# - "/etc/mysql/my.cnf" to set global options,
# - "~/.my.cnf" to set user-specific options.
#
# One can use all long options that the program supports.
# Run program with --help to get a list of available options and with
# --print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html

# This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain "#" chars...
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
[client]
port            = 3306
socket          = /var/run/mysqld/mysqld.sock

# Here is entries for some specific programs
# The following values assume you have at least 32M ram

# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
socket          = /var/run/mysqld/mysqld.sock
nice            = 0

[mysqld]
#
# * Basic Settings
#
user            = mysql
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
port            = 3306
basedir         = /usr
datadir         = /var/lib/mysql
tmpdir          = /tmp
lc-messages-dir = /usr/share/mysql
skip-external-locking
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
# bind-address          = 127.0.0.1
#
# * Fine Tuning
#
key_buffer              = 16M
max_allowed_packet      = 16M
thread_stack            = 192K
thread_cache_size       = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover         = BACKUP
#max_connections        = 100
#table_cache            = 64
#thread_concurrency     = 10
#
# * Query Cache Configuration
#
query_cache_limit       = 1M
query_cache_size        = 16M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file        = /var/log/mysql/mysql.log
#general_log             = 1
#
# Error logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf.
#
# Here you can see queries with especially long duration
#log_slow_queries       = /var/log/mysql/mysql-slow.log
#long_query_time = 2
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
#       other settings you may need to change.
#server-id              = 1
#log_bin                        = /var/log/mysql/mysql-bin.log
expire_logs_days        = 10
max_binlog_size         = 100M
#binlog_do_db           = include_database_name
#binlog_ignore_db       = include_database_name
#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!
#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
#
# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem



[mysqldump]
quick
quote-names
max_allowed_packet      = 16M

[mysql]
#no-auto-rehash # faster start of mysql but no tab completition

[isamchk]
key_buffer              = 16M

#
# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with '.cnf', otherwise they'll be ignored.
#
!includedir /etc/mysql/conf.d/

[bart.a]

PROBLEM SOLVED!!

Thanks guys for all your efforts and pointing me in the right direction! I really appreciate it!

The bind-address in my.cnf was just commented out..
I removed the comment and set the bind-address to the servers (static) IP-address..

Now I can connect to the dbases from LibreOffice out of every workstation like before..

Thanks again for your efforts!!

[Cheesemill]

How strange.

The default behaviour if bind-address is commented out is to listen on all available interfaces.

This is why I suggested it as a solution in my first post.

[spynappels]

Binding mysqld to the 192.168.1.x address may have some unexpected consequences....

Anything requiring a localhost connection, like phpmyadmin or the debian syst maintenance user will not be able to connect unless they use the Unix socket.

You could change the bind-address to 0.0.0.0 to listen on all interfaces.

[bart.a]

I tried it and phpmyadmin and libreoffice both connect just fine with the bind-address set to either the servers IP-address or 0.0.0.0

So the best option would be to set the bind-address to 0.0.0.0 , right?

[spynappels]

I tried it and phpmyadmin and libreoffice both connect just fine with the bind-address set to either the servers IP-address or 0.0.0.0

So the best option would be to set the bind-address to 0.0.0.0 , right?

It will definitely mean that mysql will be listening on all interfaces, yes.