HaProxy monitoring rule «HAproxy Server State»

Kann mir jemand weiterhelfen, es scheint ja eigentlich keine grosse Hexerei zu sein, aber irgendwas übersehe ich.
Was ich auch nicht ganz verstehe, was muss in das Feld «Name of HAProxy Server»?

That is most likely the combination of backend name & server name within that backend. Here’s how the services might look once discovered:

HAProxy Server be_sftpgo/nfs
HAProxy Server be_webserver/web1
HAProxy Server be_webserver/web2

These are two backends; the first one only has one server, the second one two.

Therefore the name to use in the rule should be the part after HAProxy Server:

be_sftpgo/nfs
be_webserver/web1
be_webserver/web2

Internally CheckMK’s service names are composed of a fixed string used for the whole check & a so-called “item” that’s the variable part the check plugin uses to differentiate between different instances of the same check. Rules targeting a specific instance use the “item” part. For this rule the naming convention is HAProxy Server %s with %s being the item. Therefore:

fixed string is “HAProxy Server”
item is the part following, and that’s what to use in the rule