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AWS target group "Deregistration delay" set back to 300s upon each deploy #5126

Open paulmossman opened 4 years ago

paulmossman commented 4 years ago

Description of your issue:

I'm deploying to an AWS Application Load Balancer. As per http://docs.shippable.com/platform/workflow/resource/loadbalancer/#oldSyntax , sourceName is the ARN of the target group. The deploys are successful.

From the AWS console I've change the target group's "Deregistration delay" from the default of 300s to a much smaller value.

The problem is that upon each Shippable deploy the "Deregistration delay" value is set back to 300s. Why is that? I cannot find Shippable configuration to control this.

Thank you.

a-murphy commented 4 years ago

It's most likely because the scalable target has been recreated. There isn't currently a setting to control the deregistration delay on Shippable, but there are ways to avoid deleting and re-registering the scalable target. When the scalable target will be recreated depends on the deployment method. If it's blueGreen, a new target won't be created unless minReplicas or maxReplicas is specified. For an upgrade deployment method, the scalable target shouldn't be replaced unless the replicas settings have changed.