telegraf/plugins/inputs/kubernetes/kubernetes_metrics.go

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package kubernetes
import "time"
// SummaryMetrics represents all the summary data about a paritcular node retrieved from a kubelet
type SummaryMetrics struct {
Node NodeMetrics `json:"node"`
Pods []PodMetrics `json:"pods"`
}
// NodeMetrics represents detailed information about a node
type NodeMetrics struct {
NodeName string `json:"nodeName"`
SystemContainers []ContainerMetrics `json:"systemContainers"`
StartTime time.Time `json:"startTime"`
CPU CPUMetrics `json:"cpu"`
Memory MemoryMetrics `json:"memory"`
Network NetworkMetrics `json:"network"`
FileSystem FileSystemMetrics `json:"fs"`
Runtime RuntimeMetrics `json:"runtime"`
}
// ContainerMetrics represents the metric data collect about a container from the kubelet
type ContainerMetrics struct {
Name string `json:"name"`
StartTime time.Time `json:"startTime"`
CPU CPUMetrics `json:"cpu"`
Memory MemoryMetrics `json:"memory"`
RootFS FileSystemMetrics `json:"rootfs"`
LogsFS FileSystemMetrics `json:"logs"`
}
// RuntimeMetrics contains metric data on the runtime of the system
type RuntimeMetrics struct {
ImageFileSystem FileSystemMetrics `json:"imageFs"`
}
// CPUMetrics represents the cpu usage data of a pod or node
type CPUMetrics struct {
Time time.Time `json:"time"`
UsageNanoCores int64 `json:"usageNanoCores"`
UsageCoreNanoSeconds int64 `json:"usageCoreNanoSeconds"`
}
// PodMetrics contains metric data on a given pod
type PodMetrics struct {
PodRef PodReference `json:"podRef"`
StartTime *time.Time `json:"startTime"`
Containers []ContainerMetrics `json:"containers"`
Network NetworkMetrics `json:"network"`
Volumes []VolumeMetrics `json:"volume"`
}
// PodReference is how a pod is identified
type PodReference struct {
Name string `json:"name"`
Namespace string `json:"namespace"`
}
// MemoryMetrics represents the memory metrics for a pod or node
type MemoryMetrics struct {
Time time.Time `json:"time"`
AvailableBytes int64 `json:"availableBytes"`
UsageBytes int64 `json:"usageBytes"`
WorkingSetBytes int64 `json:"workingSetBytes"`
RSSBytes int64 `json:"rssBytes"`
PageFaults int64 `json:"pageFaults"`
MajorPageFaults int64 `json:"majorPageFaults"`
}
// FileSystemMetrics represents disk usage metrics for a pod or node
type FileSystemMetrics struct {
AvailableBytes int64 `json:"availableBytes"`
CapacityBytes int64 `json:"capacityBytes"`
UsedBytes int64 `json:"usedBytes"`
}
// NetworkMetrics represents network usage data for a pod or node
type NetworkMetrics struct {
Time time.Time `json:"time"`
RXBytes int64 `json:"rxBytes"`
RXErrors int64 `json:"rxErrors"`
TXBytes int64 `json:"txBytes"`
TXErrors int64 `json:"txErrors"`
}
// VolumeMetrics represents the disk usage data for a given volume
type VolumeMetrics struct {
Name string `json:"name"`
AvailableBytes int64 `json:"availableBytes"`
CapacityBytes int64 `json:"capacityBytes"`
UsedBytes int64 `json:"usedBytes"`
}