agent

Documentation

Overview

Package agent implements Flatcar Linux Update Operator agent, which role is to run on every Flatcar Node on the cluster, watch update_engine for status updates, propagate them to operator via Node labels and annotations and react on operator decisions about when to drain a node and reboot to finish upgrade process.

Index

• type Config
• type Klocksmith
  • func New(config *Config) (Klocksmith, error)
• type Rebooter
• type StatusReceiver

Types

type Config

type Config struct {
	NodeName                string
	PodDeletionGracePeriod  time.Duration
	Clientset               kubernetes.Interface
	StatusReceiver          StatusReceiver
	Rebooter                Rebooter
	HostFilesPrefix         string
	PollInterval            time.Duration
	MaxOperatorResponseTime time.Duration
}

Config represents configurable options for agent.

type Klocksmith

type Klocksmith interface {
	Run(ctx context.Context) error
}

Klocksmith represents capabilities of agent.

func New

func New(config *Config) (Klocksmith, error)

New returns initialized klocksmith.

type Rebooter

type Rebooter interface {
	Reboot(bool)
}

Rebooter describes dependency of object providing capability of rebooting host machine.

type StatusReceiver

type StatusReceiver interface {
	ReceiveStatuses(rcvr chan<- updateengine.Status, stop <-chan struct{})
}

StatusReceiver describe dependency of object providing status updates from update_engine.