Http Node specific health monitor not available

I have a request from a consumer that wants to be able to fail over nodes by manipulating an html file hosted by an apache on each node. Due to the pool failover setup (priority groups) I feel the easiest way to accomplish this would be through an http monitor that looks for a 200 response and if they ever want to fail those nodes just simply rename the file. After I create said http monitor it seems i'm not able to apply it to the node. I know there are some default monitor types that can't be applied to nodes because they are designed for pools, however the default https_443 monitor is available which would lead me to believe there shouldn't be a problem assigning an http monitor on the node. I created a few test monitors and the only new monitor that is available after I choose node specific is ICMP.