config

Documentation

Index

• Constants
• Variables
• type Auth
• type AutodiscoverControlPlane
• type Config
  • func LoadConfig(filePath string, fileName string) (*Config, error)
• type ControlPlane
• type ControlPlaneComponent
• type Endpoint
• type Expression
  • func (e *Expression) String() (string, error)
• type HTTPSink
• type KSM
• type Kubelet
• type MTLS
• type NamespaceSelector
• type TLSConfig

Constants

const (
	DefaultConfigFileName   = "nri-kubernetes"
	DefaultConfigFolderName = "/etc/newrelic-infra"

	DefaultTimeout      = 10 * time.Second
	DefaultRetries      = 3
	DefaultAgentTimeout = 3 * time.Second

	DefaultNetworkRouteFile = "/proc/net/route"

	SinkTypeHTTP   = "http"
	SinkTypeStdout = "stdout"
)

Variables

var (
	ErrInvalidMatchExpressionsValue = errors.New("invalid matchExpressions value")
	ErrInvalidMatchLabelsValue      = errors.New("invalid matchLabels value")
)

Types

type Auth

type Auth struct {
	// Type specifies which authentication mechanism will be used. Supported values are `mtls` and `token`.
	// If `token` is specified, connection will be performed using the ServiceAccount bearer token mounted in the pod.
	// If `mtls` is specified, tls certificates will be pulled from secrets as sefined in the MTLS struct.
	Type string `mapstructure:"type"`
	// MTLS contains instructions on where to fetch TLS certificates from when connecting to control plane endpoints.
	// These secrets are fetched using the Kubernetes API and the pod must have a ServiceAccount token holding the
	// appropriate RBAC roles to perform this operation.
	MTLS *MTLS `mapstructure:"mtls"`
}

Auth specifies if authentication will be attempted against this endpoint.

type AutodiscoverControlPlane

type AutodiscoverControlPlane struct {
	// Namespace restrict matching pods to a certain namespace.
	// If empty, all namespaces will be considered.
	Namespace string `mapstructure:"namespace"`
	// Selector is a string-encoded label selector to match pods for a particular component.
	Selector string `mapstructure:"selector"`
	// MatchNode is a flag that when set, will discard pods discovered that are not running in the same node as the
	// integration. This flag is useful when running the control plane scraper as a DaemonSet with `hostNetwork`, where
	// the components will be contacted through `localhost`.
	MatchNode bool `mapstructure:"matchNode"`
	// Endpoints is a list of endpoints to try if a pod matching the above criteria is found.
	Endpoints []Endpoint `mapstructure:"endpoints"`
}

AutodiscoverControlPlane stores criteria for matching a control plane pod.

type Config

type Config struct {
	// Verbose is a shortcut flag to LogLevel=Debug
	Verbose bool `mapstructure:"verbose"`
	// LogLevel defines the logrus.Logger log level used by the integration.
	LogLevel string `mapstructure:"logLevel"`
	// ClusterName is a unique, human-readable name for the cluster. Will be used to qualify entities and displayNames.
	ClusterName string `mapstructure:"clusterName"`
	// KubeconfigPath is the path to a local kube/config file. If empty, in-cluster config will be used.
	KubeconfigPath string `mapstructure:"kubeconfigPath"`
	// NodeIP is the main IP for the node where the integration is running. Used to connect to the Kubelet.
	NodeIP string `mapstructure:"nodeIP"`
	// NodeName is the name of the node where the integration is running. Used to retrieve node info from the API
	// Server, and to connect to the Kubelet through the API Server proxy if direct connection fails.
	NodeName string `mapstructure:"nodeName"`
	// Interval is the time the integration will wait between metric collection runs.
	Interval time.Duration `mapstructure:"interval"`

	// Sink defines where the integration will report the metrics to.
	Sink struct {
		// Type allows selecting which of the supported sinks will be used by the integration.
		// Supported values are `http` and `stdout`.
		Type string `mapstructure:"type"`
		// HTTP stores the configuration for the HTTP sink.
		HTTP HTTPSink `mapstructure:"http"`
	} `mapstructure:"sink"`

	// ControlPlane defines config options for the control plane scraper.
	ControlPlane `mapstructure:"controlPlane"`
	// Kubelet defines config options for the kubelet scraper.
	Kubelet `mapstructure:"kubelet"`
	// KSM defines config options for the kube-state-metrics scraper.
	KSM `mapstructure:"ksm"`

	// NamespaceSelector defines custom monitoring filtering for namespaces.
	NamespaceSelector *NamespaceSelector `mapstructure:"namespaceSelector"`
}

func LoadConfig

func LoadConfig(filePath string, fileName string) (*Config, error)

type ControlPlane

type ControlPlane struct {
	// Enabled controls whether control plane scraping will be attempted, for any component.
	Enabled bool `mapstructure:"enabled"`
	// ETCD contains configuration for the etcd scraper.
	ETCD ControlPlaneComponent `mapstructure:"etcd"`
	// APIServer contains configuration for the API server scraper.
	APIServer ControlPlaneComponent `mapstructure:"apiServer"`
	// ControllerManager contains configuration for the controller manager scraper.
	ControllerManager ControlPlaneComponent `mapstructure:"controllerManager"`
	// Scheduler contains configuration for the scheduler scraper.
	Scheduler ControlPlaneComponent `mapstructure:"scheduler"`
	// Timeout controls the timeout for the requests to control plane endpoints.
	Timeout time.Duration `mapstructure:"timeout"`
	// Retries controls how many times the integration will attempt to connect to control plane components before giving up.
	Retries int `mapstructure:"retries"`
}

ControlPlane contains config options for the control plane scraper.

type ControlPlaneComponent

type ControlPlaneComponent struct {
	// Enabled controls whether this particular component should be scraped.
	Enabled bool `mapstructure:"enabled"`
	// StaticEndpoint contains an Endpoint configuration. If set, Autodiscover will not be attempted and the integration
	// will contact this endpoint directly instead.
	// Please note that failure to connect to a StaticEndpoint is considered a fatal error and will cause the
	// integration to exit with a non-zero code.
	StaticEndpoint *Endpoint `mapstructure:"staticEndpoint"`
	// Autodiscover contains one or more criteria for discovering control plane endpoints. Entries will be iterated in
	// order, with the following rules:
	// 1. If an entry's criteria (Selector, Namespace, MatchNode) does not match any pod, the next entry will be tried.
	// 2. If none of the entries matches any pod, the integration will not error but keep probing in case matching pods appear.
	// 3. If an entry's criteria more than one pod, only the first match will be considered.
	// 4. Endpoints are tried in order for a matching pod, until metrics can be read successfully from one of them.
	// 5. If all endpoints for a matching fail, no more entries will be processed, and the integration will keep probing in case matching pods appear..
	Autodiscover []AutodiscoverControlPlane `mapstructure:"autodiscover"`
}

ControlPlaneComponent contains the config for a control plane component.

type Endpoint

type Endpoint struct {
	// URL is the full URL (with scheme and port) to attempt the connection to.
	URL string `mapstructure:"url"`
	// Auth specifies if authentication will be attempted against this endpoint.
	Auth *Auth `mapstructure:"auth"`
	// InsecureSkipVerify allows to skip verification of TLS certificates.
	// If URL scheme is not https, this field is ignored.
	InsecureSkipVerify bool `mapstructure:"insecureSkipVerify"`
}

Endpoint contains information about how to perform a request to a component.

type Expression

type Expression struct {
	// Key it the key of the label.
	Key string `mapstructure:"key"`
	// Operator holds either an inclusion (NotIn) or exclusion (In) value.
	Operator string `mapstructure:"operator"`
	// Values is a slice of values related to the key.
	Values []interface{} `mapstructure:"values"`
}

Expression hold the values to generate an expression to filter namespaces by MatchExpressions.

func (*Expression) String

func (e *Expression) String() (string, error)

type HTTPSink

type HTTPSink struct {
	// Port to be used for the HTTP sink.
	Port int `mapstructure:"port"`
	// Timeout is the amount of time to wait before giving up the connection to the HTTP sink.
	Timeout time.Duration `mapstructure:"timeout"`
	// Retries is the maximum number of attempts to connect to the HTTP sink if the connection fails before giving up
	// and exiting.
	Retries int `mapstructure:"retries"`
	// TLS allows to configure TLS encryption and authentication for the HTTP sink.
	TLS TLSConfig `mapstructure:"tls"`
}

HTTPSink stores the configuration for the HTTP sink.

type KSM

type KSM struct {
	// Enabled controls whether KSM scraping will be attempted.
	Enabled bool `mapstructure:"enabled"`
	// StaticURL overrides KSM autodiscovery and forces the integration to just connect to this URL instead.
	StaticURL string `mapstructure:"staticURL"`
	// Scheme is the scheme that will be used for autodiscovered KSM service endpoints.
	// If empty, ksm.defaultScheme (`http`) will be assumed.
	Scheme string `mapstructure:"scheme"`
	// Port allows to filter autodiscovered endpoints. If non-zero, only endpoints using Port will be considered.
	Port int `mapstructure:"port"`
	// Selector is a string-encoded label selector to narrow KSM service discovery.
	// If empty, ksm.defaultLabelSelector is used.
	Selector string `mapstructure:"selector"`
	// Namespace allows limiting KSM autodiscovery to a particular namespace.
	// If empty, the integration will look for KSM service endpoints matching the Selector above on all namespaces.
	Namespace string `mapstructure:"namespace"`
	// Distributed is an EXPERIMENTAL flag that will cause the integration to collect metrics from all autodiscovered
	// KSM endpoints, instead of just the first one.
	Distributed bool `mapstructure:"distributed"`
	// Timeout controls the timeout for the requests to the KSM service.
	Timeout time.Duration `mapstructure:"timeout"`
	// Retries controls how many times the integration will attempt to connect to the KSM endpoint before giving up.
	Retries int `mapstructure:"retries"`
	// Discovery allows to configure timing aspects of KSM discovery.
	Discovery struct {
		// BackoffDelay controls how much time to wait between attempts to find the KSM service in the cluster.
		BackoffDelay time.Duration `mapstructure:"backoffDelay"`
		// Timeout controls how much time the integration will wait for a KSM service to appear before giving up.
		Timeout time.Duration `mapstructure:"timeout"`
	} `mapstructure:"discovery"`
}

KSM contains configuration options for the KSM scraper.

type Kubelet

type Kubelet struct {
	// Enabled controls whether Kubelet scraping will be attempted.
	Enabled bool `mapstructure:"enabled"`
	// Port controls which port will be used to connect to the kubelet.
	// If zero, the kubelet port will be discovered from the status of the Node object in the API Server.
	Port int32 `mapstructure:"port"`
	// Scheme controls the scheme to be used to connect to the kubelet.
	// If empty, the integration will try to guess the scheme based on the port number, by checking if this number is
	// either the well-known http or https port for the kubelet.
	// If Scheme is not specified and the Port is non-standard, the integration will fail to connect.
	Scheme string `mapstructure:"scheme"`
	// Path to the file containing the network routes of the system, used to figure out the default network interface
	// for which metrics will be collected.
	// Defaults to /proc/net/route.
	NetworkRouteFile string `mapstructure:"networkRouteFile"`
	// Timeout controls the timeout for the requests to the kubelet.
	Timeout time.Duration `mapstructure:"timeout"`
	// Retries controls how many times the integration will attempt to connect to the kubelet before giving up.
	Retries int `mapstructure:"retries"`
	// ScraperMaxReruns controls how many times the integration will attempt to
	// run kubelet scraper when runtime error happens before giving up.
	ScraperMaxReruns int `mapstructure:"scraperMaxReruns"`
}

Kubelet contains config options for the Kubelet scraper.

type MTLS

type MTLS struct {
	// TLSSecretName is the name of the secret containing TLS certificate, private key, and CA certificate that will be
	// used to perform mutual TLS authentication with the endpoint.
	// It is recommended for this secret to be of type: kubernetes.io/tls.
	TLSSecretName string `mapstructure:"secretName"`
	// TLSSecretNamespace is the namespace where the secret above is located.
	TLSSecretNamespace string `mapstructure:"secretNamespace"`
}

type NamespaceSelector

type NamespaceSelector struct {
	// MatchLabels is a list of labels to filter namespaces with.
	MatchLabels map[string]interface{} `mapstructure:"matchLabels"`
	// MatchExpressions is a list of namespaces selector requirements.
	MatchExpressions []Expression `mapstructure:"matchExpressions"`
}

NamespaceSelector contains config options for filtering namespaces.

type TLSConfig

type TLSConfig struct {
	// Enabled dictates whether TLS is used to connect to the HTTP sink.
	Enabled bool `mapstructure:"enabled"`
	// CertPath is the path to a PEM-encoded TLS certificate that will be presented to the server.
	CertPath string `mapstructure:"certPath"`
	// KeyPath is the path to the PEM-encoded private key for CertPath.
	KeyPath string `mapstructure:"keyPath"`
	// CAPath is the path to the PEM-encoded CA certificate that will be used to validate the server certificate.
	CAPath string `mapstructure:"caPath"`
}