docs: considerartions on Cert Manager

cloudbees · Aug 10, 2024 · f78758d · f78758d
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diff --git a/blueprints/02-at-scale/README.md b/blueprints/02-at-scale/README.md
@@ -16,7 +16,7 @@ Once you have familiarized yourself with [CloudBees CI blueprint add-on: Get sta
   | [Kube Prometheus Stack](https://aws-ia.github.io/terraform-aws-eks-blueprints-addons/main/addons/kube-prometheus-stack/) | Used for metrics observability.|
   | [Metrics Server](https://aws-ia.github.io/terraform-aws-eks-blueprints-addons/main/addons/metrics-server/) | This is a requirement for CloudBees CI HA/HS controllers for horizontal pod autoscaling.|
   | [Velero](https://aws-ia.github.io/terraform-aws-eks-blueprints-addons/main/addons/velero/)| Backs up and restores Kubernetes resources and volume snapshots. It is only compatible with Amazon Elastic Block Store (Amazon EBS).|
-  | [Bottlerocket Update Operator](https://aws-ia.github.io/terraform-aws-eks-blueprints-addons/main/addons/bottlerocket/) | Coordinates Bottlerocket updates on hosts in a cluster. It is configured for CloudBees CI Applications and Agents Node Groups at a specific time according to `scheduler_cron_expression`, when the build workload is minimal (weekend). In a case where the CI service cannot be interrupted at any time by the Update Operator, it could be excluded from planned updates by removing the [bottlerocket.aws/updater-interface-version=2.0.0](https://github.com/bottlerocket-os/bottlerocket-update-operator#label-nodes) label.|
+  | [Bottlerocket Update Operator](https://aws-ia.github.io/terraform-aws-eks-blueprints-addons/main/addons/bottlerocket/) | Coordinates Bottlerocket updates on hosts in a cluster. It is configured for CloudBees CI Applications and Agents Node Groups at a specific time according to `scheduler_cron_expression`, when the build workload is minimal (weekend). In a case where the CI service cannot be interrupted at any time by the Update Operator, it could be excluded from planned updates by removing the [bottlerocket.aws/updater-interface-version=2.0.0](https://github.com/bottlerocket-os/bottlerocket-update-operator#label-nodes) label. [Cert-manager](https://aws-ia.github.io/terraform-aws-eks-blueprints-addons/main/addons/cert-manager/) is required for the API server to use a CA certificate when communicating over SSL with the agents. |
 
 - [Amazon EKS blueprints Helm Release Add-on](https://aws-ia.github.io/terraform-aws-eks-blueprints-addons/main/helm-release/) is used to install the following applications:
 

diff --git a/blueprints/02-at-scale/img/at-scale.k8s.drawio.svg b/blueprints/02-at-scale/img/at-scale.k8s.drawio.svg