nsmap

README

nsmap

Name

nsmap - performs rewriting of Kubernetes namespace in DNS name.

Description

Rewrite DNS names from <service>.<logical-namespace>.svc.<zone> to <service>.<physical-namespace>.svc.<zone>

Syntax

nsmap  

Documentation

Index

• Variables
• func StartWatcher(ctx context.Context, callback OnUpdateFn) error
• type LogicalToPhysicalNamespaceMapper
  • func (nm LogicalToPhysicalNamespaceMapper) Name() string
  • func (nm LogicalToPhysicalNamespaceMapper) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error)
• type OnUpdateFn

Variables

var (
	// ConfigMapName is the name of the configmap containing logical to physical namespace mappings.
	ConfigMapName = "config-nsmap"
)

Functions

func StartWatcher

func StartWatcher(ctx context.Context, callback OnUpdateFn) error

StartWatcher starts watching for nsmap ConfigMap updates and notifies the given callback when an update occurs. This is a non-blocking function.

Types

type LogicalToPhysicalNamespaceMapper

type LogicalToPhysicalNamespaceMapper struct {
	Next plugin.Handler
	// contains filtered or unexported fields
}

LogicalToPhysicalNamespaceMapper is a CoreDNS plugin to map logical namespaces to physical namespaces.

func (LogicalToPhysicalNamespaceMapper) Name

func (nm LogicalToPhysicalNamespaceMapper) Name() string

Name implements the Handler interface.

func (LogicalToPhysicalNamespaceMapper) ServeDNS

func (nm LogicalToPhysicalNamespaceMapper) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error)

ServeDNS implements the plugin.Handler interface.

type OnUpdateFn

type OnUpdateFn func(ctx context.Context, configMap *corev1.ConfigMap)

OnUpdateFn is the function signature for receiving ConfigMap updates.