k8s_kubelet

README

Kubelet monitoring with Netdata

Kubelet is an agent that runs on each node in the cluster. It makes sure that containers are running in a pod.

This module will monitor one or more kubelet instances, depending on your configuration.

Charts

It produces the following charts:

• API Server Audit Requests in requests/s
• API Server Failed Data Encryption Key(DEK) Generation Operations in events/s
• API Server Latencies Of Data Encryption Key(DEK) Generation Operations in observes/s
• API Server Latencies Of Data Encryption Key(DEK) Generation Operations Percentage in %
• API Server Storage Envelope Transformation Cache Missesinevents/s`
• Number Of Containers Currently Running in containers
• Number Of Pods Currently Running in pods
• Bytes Used By The Pod Logs On The Filesystem in bytes
• Runtime Operations By Type in operations/s
• Docker Operations By Type in operations/s
• Docker Operations Errors By Type in operations/s
• Node Configuration-Related Error in bool
• PLEG Relisting Interval Summary in microseconds
• PLEG Relisting Latency Summary in microseconds
• Token Requests To The Alternate Token Source in requests/s
• REST Client HTTP Requests By Status Code in requests/s
• REST Client HTTP Requests By Method in requests/s

Per every plugin:

• Volume Manager State Of The World in state

Configuration

Edit the go.d/k8s_kubelet.conf configuration file using edit-config from the your agent's config directory, which is typically at /etc/netdata.

cd /etc/netdata # Replace this path with your Netdata config directory
sudo ./edit-config go.d/k8s_kubelet.conf

Needs only url to kubelet metric-address. Here is an example for 2 instances:

jobs:
  - name: local
    url : http://127.0.0.1:10255/metrics
      
  - name: remote
    url : http://203.0.113.10:10255/metrics

For all available options please see module configuration file.

Troubleshooting

Check the module debug output. Run the following command as netdata user:

./go.d.plugin -d -m k8s_kubelet

Documentation

Index

• type Chart
• type Charts
• type Config
• type Dim
• type Dims
• type Kubelet
  • func New() *Kubelet
  • func (k Kubelet) Charts() *Charts
  • func (k *Kubelet) Check() bool
  • func (Kubelet) Cleanup()
  • func (k *Kubelet) Collect() map[string]int64
  • func (k *Kubelet) Init() bool

Types

type Chart

type Chart = module.Chart

Chart is an alias for module.Chart

type Charts

type Charts = module.Charts

Charts is an alias for module.Charts

type Config

type Config struct {
	web.HTTP  `yaml:",inline"`
	TokenPath string `yaml:"token_path"`
}

type Dim

type Dim = module.Dim

Dim is an alias for module.Dim

type Dims

type Dims = module.Dims

Dims is an alias for module.Dims

type Kubelet

type Kubelet struct {
	module.Base
	Config `yaml:",inline"`
	// contains filtered or unexported fields
}

func New

func New() *Kubelet

New creates Kubelet with default values.

func (Kubelet) Charts

func (k Kubelet) Charts() *Charts

Charts creates Charts.

func (*Kubelet) Check

func (k *Kubelet) Check() bool

Check makes check.

func (Kubelet) Cleanup

func (Kubelet) Cleanup()

Cleanup makes cleanup.

func (*Kubelet) Collect

func (k *Kubelet) Collect() map[string]int64

Collect collects mx.

func (*Kubelet) Init

func (k *Kubelet) Init() bool

Init makes initialization.