controlio module for checking Varnish stats
A check module for controlio.
Runs varnishstat -1j on the remote server and checks the result.
- valueKey: If defined, must be a key from the varnishstat output. If undefined, this check will always be OK as long as varnishstat returns a parseable result.
- valueMax: If defined, the value for valueKey is checked against this limit.
- valueMin: If defined, the value for valueKey is checked against this limit.