fix describe when allocatable CPU/Memory is 0

pkg/printers/internalversion/describe.go

@@ -2917,10 +2917,18 @@ func describeNodeResource(nodeNonTerminatedPodsList *api.PodList, node *api.Node
 	w.Write(LEVEL_1, "------------\t----------\t---------------\t-------------\n")
 	reqs, limits := getPodsTotalRequestsAndLimits(nodeNonTerminatedPodsList)
 	cpuReqs, cpuLimits, memoryReqs, memoryLimits := reqs[api.ResourceCPU], limits[api.ResourceCPU], reqs[api.ResourceMemory], limits[api.ResourceMemory]
-	fractionCpuReqs := float64(cpuReqs.MilliValue()) / float64(allocatable.Cpu().MilliValue()) * 100
-	fractionCpuLimits := float64(cpuLimits.MilliValue()) / float64(allocatable.Cpu().MilliValue()) * 100
-	fractionMemoryReqs := float64(memoryReqs.Value()) / float64(allocatable.Memory().Value()) * 100
-	fractionMemoryLimits := float64(memoryLimits.Value()) / float64(allocatable.Memory().Value()) * 100
+	fractionCpuReqs := float64(0)
+	fractionCpuLimits := float64(0)
+	if allocatable.Cpu().MilliValue() != 0 {
+		fractionCpuReqs = float64(cpuReqs.MilliValue()) / float64(allocatable.Cpu().MilliValue()) * 100
+		fractionCpuLimits = float64(cpuLimits.MilliValue()) / float64(allocatable.Cpu().MilliValue()) * 100
+	}
+	fractionMemoryReqs := float64(0)
+	fractionMemoryLimits := float64(0)
+	if allocatable.Memory().Value() != 0 {
+		fractionMemoryReqs = float64(memoryReqs.Value()) / float64(allocatable.Memory().Value()) * 100
+		fractionMemoryLimits = float64(memoryLimits.Value()) / float64(allocatable.Memory().Value()) * 100
+	}
 	w.Write(LEVEL_1, "%s (%d%%)\t%s (%d%%)\t%s (%d%%)\t%s (%d%%)\n",
 		cpuReqs.String(), int64(fractionCpuReqs), cpuLimits.String(), int64(fractionCpuLimits),
 		memoryReqs.String(), int64(fractionMemoryReqs), memoryLimits.String(), int64(fractionMemoryLimits))