Saltar al contenido
Al usar AWS re:Post, aceptas las AWS re:Post Términos de uso
AWS re:Postre:Post
Acerca de re:Post

Is it possible to speed up deletion of a VPC attached lambda, within a CloudFormation stack?

0

When deploying a stack (with CDK) containing a lambda attached to a VPC, then destroying the stack, it takes around 45 minutes to delete a lambda attached to a VPC.

I believe this is because the elastic network interface associated with the lambda takes this long to remove, but as I am only testing deployment the eni should not be in use.

Is this a known issue and can anything be done to improve the experience around this?

Temas
Administración y gobiernoComputación
Etiquetas
AWS CloudFormationAWS Lambda
Idioma
English

preguntada hace 4 años4,5 mil visualizaciones

1 Respuesta
0

I haven't timed this lately but I know prior to the improved Lambda VPC networking using AWS Hyperplane rolled out 2019/2020, it could take several hours for an ENI to be cleaned up and deleted. Supposedly it's improved now ... I guess 45 mins is an improvement! :)

One workaround I heard of with CloudFormation was using a Custom Resource to force deletion of the ENI. Something to watch out for with this is that ENIs are shared across Lambda execution environments with the same security group & subnet combination, so best to use a unique security group per Function to avoid deleting an ENI in use by someone else.

EXPERTO

respondido hace 4 años

  • Drew-PUSH
    hace 4 años

    The strange thing is I am creating the security group as part of the same stack and the ENI is only used for the single lambda, so I don't see why the ENI needs to be kept for so long after deletion.

    I think I had seen something similar with the custom resource, so I might give this a try. Though deleting the ENI early via the AWS Console doesn't seem to be possible, even after CloudFormation has deleted the lambda...

No has iniciado sesión. Iniciar sesión para publicar una respuesta.

Una buena respuesta responde claramente a la pregunta, proporciona comentarios constructivos y fomenta el crecimiento profesional en la persona que hace la pregunta.

Contenido relevante