Dustin C. Hatch
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If a Jenkins job runs for a while, Kubernetes may schedule other Pods on it eventually. If a long-running Pod gets assigned to the ephemeral node, the Cluster Autoscaler won't be able to scale down the ASG. To prevent this, we apply a taint to the node so normal Pods will not get assigned to it. We have to apply the corresponding toleration to Pods for Jenkins jobs.
Configuring AWS Using Terraform
Prerequisites
The IAM user or role that runs Terraform must have the appropriate permissions.
The iam-policy.json file defines a policy that will allow the Terraform to
manage all of the necessary resources. Before running Terraform, create an IAM
policy and assign it to a user, group, or role. Be sure to replace the AWS
account ID in the various target resource names.
To use an IAM role, set the iam_role Terraform variable when executing
terraform plan/terraform apply.
Create Resources
Terraform will create all resources automatically:
terraform apply