Hi there,

I've run into a small problem with the ec2_vpc module.

It *looks* like it should be possible to run the ec2_vpc module without
specifying subnets. This useful e.g. when you want to:
- (1) first define the subnets, then
- (2) set up an instance in one of the subnets, and then
- (3) define the VPC's route tables, routing some traffic to the instance
from step 2.

For step 1, I can use ec2_vpc with subnets but no route_tables; for step 3,
I can use ec2_vpc with route_tables but no subnets.

Unfortunately, the module breaks if no subnets are specified at this point:
https://github.com/ansible/ansible-modules-core/blob/devel/cloud/amazon/ec2_vpc.py#L491
("TypeError: 'NoneType' object is not iterable").

I would have expected that either this was wrapped in a "if subnets is not
None:", or that subnets would be a required argument. Is this a bug or am I
holding it wrong?

Thanks!

-- 

Niko Felger
EyeQuant, VP Product & Technology

@eyequant | http://facebook.com/eyequant | +49 30 609 899 79 0

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