Jenkins Multi-Configuration project details

[chinmoy padhi]

Hi All,

Recently I have created a Multi-Configuration project on Jenkins.

When I went to jobs configuration it has Configuration Matrix

Which has got labels and individual nodes.

Can somebody explain why do we need

1. Labels

2. Individual Nodes

3. Also one point I observe when I selected both Labels and Individual Nodes then I can see both Labels and Individual node builds are happening together

    Whereas, when I selected the Individual Node only it was showing "default"and build triggered for Individual node. 

    Why is the such behavior?

Appreciate your help in advance.

Thanks