[chef] tell other nodes after installation of a new node

[Christian Fröstl < >]

Hi,

I like to know if there is a possibility to tell a node that there is a
new backend node installed.
Example:
I like to tell my reverse proxy that chef has installed a new backend
Server and the new backend server should than added in the reverse proxy
configuration directly.

Right now, I only find the solution using search functions, but then I
have to wait until the next chef-client run of the reverse proxy.
Can I directly inform the reverse proxy after installing the backen node?

Kind regards,
Christian