I tried to install the mysql plugin but it gave me this error:
Reading package lists...
Building dependency tree...
Reading state information...
The following extra packages will be installed:
libdbd-mysql-perl libmysqlclient18 mysql-client-5.5 mysql-server
mysql-server-5.5 mywebsql php5-mysqlnd
Suggested packages:
libterm-readkey-perl tinyca
Recommended packages:
libhtml-template-perl
The following NEW packages will be installed:
libdbd-mysql-perl libmysqlclient18 mysql-client-5.5 mysql-server
mysql-server-5.5 mywebsql openmediavault-mysql php5-mysqlnd
0 upgraded, 8 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/6312 kB of archives.
After this operation, 79.2 MB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
libmysqlclient18 libdbd-mysql-perl mysql-client-5.5 mysql-server-5.5
php5-mysqlnd mysql-server openmediavault-mysql mywebsql
Preconfiguring packages ...
Authentication warning overridden.
Selecting previously unselected package libmysqlclient18:amd64.
(Reading database ... 42609 files and directories currently installed.)
Unpacking libmysqlclient18:amd64 (from .../libmysqlclient18_5.5.40-0+wheezy1_amd64.deb) ...
Selecting previously unselected package libdbd-mysql-perl.
Unpacking libdbd-mysql-perl (from .../libdbd-mysql-perl_4.021-1+b1_amd64.deb) ...
Selecting previously unselected package mysql-client-5.5.
Unpacking mysql-client-5.5 (from .../mysql-client-5.5_5.5.40-0+wheezy1_amd64.deb) ...
Selecting previously unselected package mysql-server-5.5.
Unpacking mysql-server-5.5 (from .../mysql-server-5.5_5.5.40-0+wheezy1_amd64.deb) ...
egrep: /etc/mysql/: No such file or directory
Selecting previously unselected package php5-mysqlnd.
Unpacking php5-mysqlnd (from .../php5-mysqlnd_5.4.36-0+deb7u3_amd64.deb) ...
Selecting previously unselected package mysql-server.
Unpacking mysql-server (from .../mysql-server_5.5.40-0+wheezy1_all.deb) ...
Selecting previously unselected package openmediavault-mysql.
Unpacking openmediavault-mysql (from .../openmediavault-mysql_1.0.13_all.deb) ...
Selecting previously unselected package mywebsql.
Unpacking mywebsql (from .../mywebsql_3.6-omv1_all.deb) ...
Processing triggers for man-db ...
Processing triggers for php5-fpm ...
Restarting PHP5 FastCGI Process Manager: php5-fpm.
Processing triggers for openmediavault ...
Restarting engine daemon ...
Setting up libmysqlclient18:amd64 (5.5.40-0+wheezy1) ...
Setting up libdbd-mysql-perl (4.021-1+b1) ...
Setting up mysql-client-5.5 (5.5.40-0+wheezy1) ...
Setting up mysql-server-5.5 (5.5.40-0+wheezy1) ...
Stopping MySQL database server: mysqld.
/etc/init.d/mysql: WARNING: /etc/mysql/my.cnf cannot be read. See README.Debian.gz ... (warning).
Starting MySQL database server: mysqld . . . . . . . . . . . . . . failed!
invoke-rc.d: initscript mysql, action "start" failed.
dpkg: error processing mysql-server-5.5 (--configure):
subprocess installed post-installation script returned error exit status 1
Setting up php5-mysqlnd (5.4.36-0+deb7u3) ...
Creating config file /etc/php5/mods-available/mysqlnd.ini with new version
Creating config file /etc/php5/mods-available/mysql.ini with new version
Creating config file /etc/php5/mods-available/mysqli.ini with new version
Creating config file /etc/php5/mods-available/pdo_mysql.ini with new version
dpkg: dependency problems prevent configuration of mysql-server:
mysql-server depends on mysql-server-5.5; however:
Package mysql-server-5.5 is not configured yet.
dpkg: error processing mysql-server (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of openmediavault-mysql:
openmediavault-mysql depends on mysql-server; however:
Package mysql-server is not configured yet.
dpkg: error processing openmediavault-mysql (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of mywebsql:
mywebsql depends on openmediavault-mysql (>= 1.0.5); however:
Package openmediavault-mysql is not configured yet.
dpkg: error processing mywebsql (--configure):
dependency problems - leaving unconfigured
Processing triggers for php5-fpm ...
Restarting PHP5 FastCGI Process Manager: php5-fpm.
Errors were encountered while processing:
mysql-server-5.5
mysql-server
openmediavault-mysql
mywebsql