initserver

Documentation

Overview

InitServer

The InitServer is one of the two main components of the bootstrapper. It is responsible for the initial setup of a node, and the initialization of the Kubernetes cluster.

The InitServer is started on each node, and waits for either a call from the CLI, or for the JoinClient to connect to an existing cluster.

If a call from the CLI is received, the InitServer bootstraps the Kubernetes cluster, and stops the JoinClient.

Index

• type ClusterInitializer
• type MetadataAPI
• type Server
  • func New(ctx context.Context, lock locker, kube ClusterInitializer, issuer atls.Issuer, ...) (*Server, error)
  • func (s *Server) Init(req *initproto.InitRequest, stream initproto.API_InitServer) (err error)
  • func (s *Server) Serve(ip, port string, cleaner cleaner) error
  • func (s *Server) Stop()

Types

type ClusterInitializer

type ClusterInitializer interface {
	// InitCluster initializes a new Kubernetes cluster.
	InitCluster(
		ctx context.Context,
		k8sVersion string,
		clusterName string,
		conformanceMode bool,
		kubernetesComponents components.Components,
		apiServerCertSANs []string,
		serviceCIDR string,
		log *logger.Logger,
	) ([]byte, error)
}

ClusterInitializer has the ability to initialize a cluster.

type MetadataAPI

type MetadataAPI interface {
	// InitSecretHash returns the initSecretHash of the instance.
	InitSecretHash(ctx context.Context) ([]byte, error)
}

MetadataAPI provides information about the instances.

type Server

type Server struct {
	initproto.UnimplementedAPIServer
	// contains filtered or unexported fields
}

Server is the initialization server, which is started on each node. The server handles initialization calls from the CLI and initializes the Kubernetes cluster.

func New

func New(ctx context.Context, lock locker, kube ClusterInitializer, issuer atls.Issuer, fh file.Handler, metadata MetadataAPI, log *logger.Logger) (*Server, error)

New creates a new initialization server.

func (*Server) Init

func (s *Server) Init(req *initproto.InitRequest, stream initproto.API_InitServer) (err error)

Init initializes the cluster.

func (*Server) Serve

func (s *Server) Serve(ip, port string, cleaner cleaner) error

Serve starts the initialization server.

func (*Server) Stop

func (s *Server) Stop()

Stop stops the initialization server gracefully.