This recipe can be used to generate a bash script that can test connectivity to application servers.

A simple buildout.cfg:

[buildout]
parts = checker

[checker]
recipe = edw.recipe.responsecheck
start-port = 8000
end-port = 9000
step = 2
backends = backend1 ... backend2
path = ${buildout:directory}/bin

Explanation:

start-port = Port to start the check.
end-port   = Port to end the check.
step       = The numeric value that the count is increased by each loop.
backends   = List of backend names separated by space character.
path       = Path to a folder where the bash script will be saved.

Note: All options must be specified.

This recipe will generate a bash script that for each specified backend will test connectivity to every port from start-port to end-port with the specified step.