6.4.2. Plasament Obligatoriu
Mandatory placement occurs any time the constraint’s score is +INFINITY
or -INFINITY
. In such cases, if the constraint can’t be satisfied, then the rsc
resource is not permitted to run. For score=INFINITY
, this includes cases where the with-rsc
resource is not active.
Dacă aveţi nevoie ca resource1
să ruleze întotdeauna pe aceeaşi maşină ca şi resource2
, aţi adăuga următoarea restricţie:
Remember, because INFINITY
was used, if resource2
can’t run on any of the cluster nodes (for whatever reason) then resource1
will not be allowed to run.
Alternatively, you may want the opposite… that resource1
cannot run on the same machine as resource2
. In this case use score="-INFINITY"
Din nou, specificând -INFINTY
, restricţia este imutabilă. Deci singurul loc rămas pentru a rula este cel unde resource2
este deja, atunci resource1
nu poate rula nicăieri.