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LowNodeUtilization: show node usage in percentage as well

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This commit is contained in:
Jan Chaloupka
2020-11-18 14:43:50 +01:00
parent 5225ec4597
commit 652ee87bf5
1 changed files with 21 additions and 4 deletions
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25
pkg/descheduler/strategies/lownodeutilization.go
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@@ -238,6 +238,23 @@ func getNodeUsage(
return nodeUsageList
}
func resourceUsagePercentages(nodeUsage NodeUsage) map[v1.ResourceName]float64 {
nodeCapacity := nodeUsage.node.Status.Capacity
if len(nodeUsage.node.Status.Allocatable) > 0 {
nodeCapacity = nodeUsage.node.Status.Allocatable
}
resourceUsagePercentage := map[v1.ResourceName]float64{}
for resourceName, resourceUsage := range nodeUsage.usage {
cap := nodeCapacity[resourceName]
if !cap.IsZero() {
resourceUsagePercentage[resourceName] = float64(resourceUsage.Value()) / float64(cap.Value())
}
}
return resourceUsagePercentage
}
// classifyNodes classifies the nodes into low-utilization or high-utilization nodes. If a node lies between
// low and high thresholds, it is simply ignored.
func classifyNodes(
@@ -248,13 +265,13 @@ func classifyNodes(
for _, nodeUsage := range nodeUsages {
if lowThresholdFilter(nodeUsage.node, nodeUsage) {
klog.V(2).InfoS("Node is underutilized", "node", klog.KObj(nodeUsage.node), "usage", nodeUsage.usage)
klog.V(2).InfoS("Node is underutilized", "node", klog.KObj(nodeUsage.node), "usage", nodeUsage.usage, "usagePercentage", resourceUsagePercentages(nodeUsage))
lowNodes = append(lowNodes, nodeUsage)
} else if highThresholdFilter(nodeUsage.node, nodeUsage) {
klog.V(2).InfoS("Node is overutilized", "node", klog.KObj(nodeUsage.node), "usage", nodeUsage.usage)
klog.V(2).InfoS("Node is overutilized", "node", klog.KObj(nodeUsage.node), "usage", nodeUsage.usage, "usagePercentage", resourceUsagePercentages(nodeUsage))
highNodes = append(highNodes, nodeUsage)
} else {
klog.V(2).InfoS("Node is appropriately utilized", "node", klog.KObj(nodeUsage.node), "usage", nodeUsage.usage)
klog.V(2).InfoS("Node is appropriately utilized", "node", klog.KObj(nodeUsage.node), "usage", nodeUsage.usage, "usagePercentage", resourceUsagePercentages(nodeUsage))
}
}
@@ -301,7 +318,7 @@ func evictPodsFromTargetNodes(
klog.V(3).InfoS("Evicting pods from node", "node", klog.KObj(node.node), "usage", node.usage)
nonRemovablePods, removablePods := classifyPods(node.allPods, podFilter)
klog.V(2).InfoS("AllPods", len(node.allPods), "nonRemovablePods", len(nonRemovablePods), "removablePods", len(removablePods))
klog.V(2).InfoS("Pods on node", "node", klog.KObj(node.node), "allPods", len(node.allPods), "nonRemovablePods", len(nonRemovablePods), "removablePods", len(removablePods))
if len(removablePods) == 0 {
klog.V(1).InfoS("No removable pods on node, try next node", "node", klog.KObj(node.node))