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probcomp / probcomp-stack

MIT Probabilistic Computing Project software stack
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Pin availability zone choice? #16

Closed axch closed 7 years ago

axch commented 7 years ago

Tried to create a stack and got "your chosen availability zone (us-east-1a) does not support your chosen instance type (c3.8xlarge)". I notice that all our other instances are not in us-east-1a, including a bunch of t2.micros I successfully created. Does it choose the zone randomly? How can this be fixed?

axch commented 7 years ago

Workaround: Just delete the stack and create it again. Apparently this time it picked a different availability zone and succeeded.

riastradh-probcomp commented 7 years ago

Date: Fri, 26 May 2017 06:20:06 -0700 From: axch notifications@github.com

Tried to create a stack and got "your chosen availability zone (us-east-1a) does not support your chosen instance type (c3.8xlarge)". I notice that all our other instances are not in us-east-1a, including a bunch of t2.micros I successfully created. Does it choose the zone randomly? How can this be fixed?

Not sure, haven't seen that before. You can try adding the property

AvailabilityZone: us-east-1b

to the back end EC2 instance. To see the list of AZs, run `aws ec2 describe-availability-zones --region us-east-1'.

axch commented 7 years ago

stack.yaml now has AvailabilityZone: !Select [ 1, !GetAZs ], which apparently selects the alphabetically second availability zone from the full list. Is this issue now resolved well enough?