Add option to ExternalService to control envoy proxy arguments

Author: cottand

api/v1/externalservice_types.go

@@ -63,6 +63,9 @@ type ExternalServiceSpec struct {
 // +optional
 EnvoyClusterMaxConnections *uint32 `json:"envoyClusterMaxConnections,omitempty"`
 
+// Additional arguments passed to the Envoy proxy image
+EnvoyArguments []string `json:"envoyArguments,omitempty"`
+
 // Provides a way to override the global default
 // +optional
 ServiceTopologyMode string `json:"serviceTopologyMode,omitempty"`

config/crd/bases/egress.monzo.com_externalservices.yaml

@@ -39,6 +39,11 @@ spec:
  dnsName:
  description: DnsName is a DNS name target for the external service
  type: string
+ envoyArguments:
+ description: Additional arguments passed to the Envoy proxy image
+ type: array
+ items:
+ type: string
  envoyClusterMaxConnections:
  description: The maximum number of connections that Envoy will establish
  to all hosts in an upstream cluster (defaults to 1024). If this

controllers/deployment.go

@@ -189,6 +189,7 @@ func deployment(es *egressv1.ExternalService, configHash string) *appsv1.Deploym
 {
 Name: "gateway",
 Image: img,
+Args: es.Spec.EnvoyArguments,
 ImagePullPolicy: corev1.PullIfNotPresent,
 Ports: deploymentPorts(es),
 VolumeMounts: []corev1.VolumeMount{