Hi,

I have defined an additional graph (in Munin, munin.conf) that calculates the total size of my MySQL database. The index and data sizes are extracted from an external plugin. The definition looks like this:

[...]

[Database;my.host.com]
    address my.host.com
    use_node_name yes

    dbsize.update no
    dbsize.graph_args --base 1024 -l 0
    dbsize.graph_title Total database size
    dbsize.graph_vlabel bytes
    dbsize.graph_category mysql
    dbsize.graph_info The total database size.
    dbsize.graph_order the_sum
    dbsize.the_sum.sum \
            my.host.com:mysql_size.index \
            my.host.com:mysql_size.datas
    dbsize.the_sum.label data+index
    dbsize.the_sum.type GAUGE
    dbsize.the_sum.min 0

[...]

Now, is it possible to extract the current value of this graph? Running

# munin-run dbsize

or

# munin-run my.host.com:dbsize

does not seem to work.