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Create secondary node group to limit AZ #4

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Create secondary node group to limit AZ #4

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14 changes: 14 additions & 0 deletions aws/eks.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -143,6 +143,20 @@ module "eks" {
max_size = 3
desired_size = 3
}
# To deploy this change, a blue-green deployment is necessary.
# First, add the new `worker-green` node group, with a tf plan + apply.
# After confirming success, remove the previous `worker` node group,
# with a tf plan + apply.
worker-green = {
name = "opal-worker-greenn"
max_size = 3
desired_size = 2
subnet_ids = concat([
for subnet_id in module.vpc.private_subnets : subnet_id if subnet_id != "<private_subnet_id_to_exclude>"
], [
for subnet_id in module.vpc.public_subnets : subnet_id if subnet_id != "<public_subnet_id_to_exclude>"
])
}
}

# show example auth config map
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