conflictingvirtualservicehost

README

Conflicting VirtualService Host

The conflictingvirtualservicehost vetter inspects the Virtual Service(s) resources in your cluster and generates errors if more than one of them define the same hostname and the same route. When multiple VirtualServices define the same hostname, Pilot will try to merge those virtual services, which can happen in an indeterminite order and cause unexpected behavior in your cluster. Additionally, if two virtual services define the same hostname and at least one of them uses sidecar routing (i.e., not attached to a specific gateway), merging cannot occur.

Istio requires that each VirtualService uses a unique combination of hostname and route. Short hostnames (those that do not contain a '.') are converted to fully qualified domain names (FQDN) that include the namespace where the VirtualService resource is defined, so short hostnames are allowed to be repeated so long as they are defined in separate namespaces. Converting short names to FQDN does not apply to hostnames that include a wildcard '*' prefix, IP addresses, or web addresses. These must be unique regardless of the namespace in which they are defined.

Notes Generated

• VirtualServices Define the Same Host

Documentation

Index

• func CreateVirtualServiceNotes(virtualServices []*istioClientNet.VirtualService) ([]*apiv1.Note, error)
• type VsHost
  • func NewVetter(factory vetter.ResourceListGetter) *VsHost
  • func NewVetterFromListers(nsLister v1.NamespaceLister, vsLister istioNetListers.VirtualServiceLister) *VsHost
  • func (v *VsHost) Info() *apiv1.Info
  • func (v *VsHost) Vet() ([]*apiv1.Note, error)

Functions

func CreateVirtualServiceNotes

func CreateVirtualServiceNotes(virtualServices []*istioClientNet.VirtualService) ([]*apiv1.Note, error)

CreateVirtualServiceNotes checks for multiple vs defining the same host and generates notes for these cases

Types

type VsHost

type VsHost struct {
	// contains filtered or unexported fields
}

VsHost implements Vetter interface

func NewVetter

func NewVetter(factory vetter.ResourceListGetter) *VsHost

NewVetter returns "VsHost" which implements the Vetter Tnterface

func NewVetterFromListers

func NewVetterFromListers(nsLister v1.NamespaceLister, vsLister istioNetListers.VirtualServiceLister) *VsHost

func (*VsHost) Info

func (v *VsHost) Info() *apiv1.Info

Info returns information about the vetter

func (*VsHost) Vet

func (v *VsHost) Vet() ([]*apiv1.Note, error)

Vet returns the list of generated notes