software/kvm: Fine tune promises

software/kvm/buildout.hash.cfg

@@ -19,7 +19,7 @@ md5sum = bf0a70140e4775efaacdd5fe03ac3b62
 
 [template-kvm]
 filename = instance-kvm.cfg.jinja2
-md5sum = 20554e40f9fe666839ef86ff8216cebf
+md5sum = 1156f1d07c75a938ab440b55dfaf1c42
 
 [template-kvm-cluster]
 filename = instance-kvm-cluster.cfg.jinja2.in

software/kvm/instance-kvm.cfg.jinja2

@@ -560,10 +560,13 @@ command-line = ${kvm-controller:output}
 
 [kvm-vnc-promise]
 <= monitor-promise-base
+# This promise bangs on error
 promise = check_socket_listening
 name = vnc_promise.py
 config-host = ${kvm-parameter-dict:vnc-ip}
 config-port = ${kvm-parameter-dict:vnc-websocket-port}
+# It is required to be very sensitive for non working KVM process
+failure-amount = 1
 
 [kvm-disk-image-corruption-bin]
 recipe = collective.recipe.template