Use constraints template

mongodb.nomad.hcl

@@ -9,10 +9,7 @@ job "[[ .instance ]]" {
     count = [[ $c.count ]]
     shutdown_delay = "10s"
 
-    constraint {
-      operator = "distinct_hosts"
-      value    = "true"
-    }
+[[ template "common/constraints" $c ]]
 
     network {
       mode = "bridge"

variables.yml

@@ -40,6 +40,11 @@ mongo:
     meta:
       addr: 'mongo-${NOMAD_ALLOC_INDEX}.[[ .instance ]][[ .consul.suffix ]].service.[[ .consul.domain ]]'
 
+  nomad:
+    constraints:
+      - operator: distinct_hosts
+        value: true
+
   # If port is set, a static port will be allocated. Else, a dynamic port will be used
   # port: 27017