Add experimental Flatcar Linux arm64 support on AWS
* Add `arch` variable to Flatcar Linux AWS `kubernetes` and `workers` modules. Accept `amd64` (default) or `arm64` to support native arm64/aarch64 clusters or mixed/hybrid clusters with arm64 workers * Requires `flannel` or `cilium` CNI Similar to https://github.com/poseidon/typhoon/pull/875
This commit is contained in:
Dalton Hubble
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@ -8,6 +8,15 @@ Notable changes between versions.
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* Switch Kubernetes Container Runtime from `docker` to `containerd` ([#1101](https://github.com/poseidon/typhoon/pull/1101))
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### Flatcar Linux
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#### AWS
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* Add experimental Flatcar Linux ARM64 support
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* Add `arch` variable to AWS `kubernetes` and `workers` modules
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* Allow arm64 full-cluster or mixed/hybrid cluster with arm64 workers
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* Requires `flannel` or `cilium` CNI provider
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## v1.23.1
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* Kubernetes [v1.23.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.23.md#v1231)
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@ -45,6 +45,10 @@ Typhoon is available for [Flatcar Linux](https://www.flatcar-linux.org/releases/
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| DigitalOcean | Flatcar Linux | [digital-ocean/flatcar-linux/kubernetes](digital-ocean/flatcar-linux/kubernetes) | beta |
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| Google Cloud | Flatcar Linux | [google-cloud/flatcar-linux/kubernetes](google-cloud/flatcar-linux/kubernetes) | beta |
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| Platform | Operating System | Terraform Module | Status |
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|---------------|------------------|------------------|--------|
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| AWS | Flatcar Linux (ARM64) | [aws/flatcar-linux/kubernetes](aws/flatcar-linux/kubernetes) | alpha |
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## Documentation
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* [Docs](https://typhoon.psdn.io)
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@ -1,7 +1,7 @@
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locals {
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# Pick a Flatcar Linux AMI
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# flatcar-stable -> Flatcar Linux AMI
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ami_id = data.aws_ami.flatcar.image_id
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ami_id = var.arch == "arm64" ? data.aws_ami.flatcar-arm64[0].image_id : data.aws_ami.flatcar.image_id
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channel = split("-", var.os_image)[1]
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}
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@ -25,3 +25,25 @@ data "aws_ami" "flatcar" {
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}
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}
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data "aws_ami" "flatcar-arm64" {
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count = var.arch == "arm64" ? 1 : 0
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most_recent = true
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owners = ["075585003325"]
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filter {
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name = "architecture"
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values = ["arm64"]
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}
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filter {
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name = "virtualization-type"
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values = ["hvm"]
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}
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filter {
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name = "name"
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values = ["Flatcar-${local.channel}-*"]
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}
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}
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@ -160,6 +160,17 @@ variable "cluster_domain_suffix" {
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default = "cluster.local"
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}
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variable "arch" {
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type = string
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description = "Container architecture (amd64 or arm64)"
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default = "amd64"
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validation {
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condition = var.arch == "amd64" || var.arch == "arm64"
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error_message = "The arch must be amd64 or arm64."
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}
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}
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variable "daemonset_tolerations" {
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type = list(string)
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description = "List of additional taint keys kube-system DaemonSets should tolerate (e.g. ['custom-role', 'gpu-role'])"
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worker_count = var.worker_count
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instance_type = var.worker_type
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os_image = var.os_image
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arch = var.arch
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disk_size = var.disk_size
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spot_price = var.worker_price
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target_groups = var.worker_target_groups
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@ -1,7 +1,7 @@
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locals {
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# Pick a Flatcar Linux AMI
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# flatcar-stable -> Flatcar Linux AMI
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ami_id = data.aws_ami.flatcar.image_id
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ami_id = var.arch == "arm64" ? data.aws_ami.flatcar-arm64[0].image_id : data.aws_ami.flatcar.image_id
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channel = split("-", var.os_image)[1]
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}
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@ -25,3 +25,24 @@ data "aws_ami" "flatcar" {
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}
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}
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data "aws_ami" "flatcar-arm64" {
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count = var.arch == "arm64" ? 1 : 0
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most_recent = true
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owners = ["075585003325"]
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filter {
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name = "architecture"
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values = ["arm64"]
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}
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filter {
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name = "virtualization-type"
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values = ["hvm"]
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}
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filter {
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name = "name"
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values = ["Flatcar-${local.channel}-*"]
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}
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}
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@ -119,3 +119,16 @@ variable "node_taints" {
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description = "List of initial node taints"
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default = []
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}
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# unofficial, undocumented, unsupported
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variable "arch" {
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type = string
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description = "Container architecture (amd64 or arm64)"
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default = "amd64"
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validation {
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condition = var.arch == "amd64" || var.arch == "arm64"
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error_message = "The arch must be amd64 or arm64."
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}
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}
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@ -1,12 +1,9 @@
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# ARM64
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!!! warning
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ARM64 support is experimental
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Typhoon has experimental support for ARM64 with Fedora CoreOS on AWS. Full clusters can be created with ARM64 controller and worker nodes. Or worker pools of ARM64 nodes can be attached to an AMD64 cluster to create a hybrid/mixed architecture cluster.
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Typhoon has experimental support for ARM64 on AWS, with Fedora CoreOS or Flatcar Linux. Clusters can be created with ARM64 controller and worker nodes. Or worker pools of ARM64 nodes can be attached to an AMD64 cluster to create a hybrid/mixed architecture cluster.
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!!! note
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Currently, CNI networking must be set to flannel or Cilium.
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Currently, CNI networking must be set to `flannel` or `cilium`.
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## Cluster
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@ -35,14 +32,14 @@ module "gravitas" {
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}
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```
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Verify the cluster has only arm64 (`aarch64`) nodes.
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Verify the cluster has only arm64 (`aarch64`) nodes. For Flatcar Linux, describe nodes.
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```
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$ kubectl get nodes -o wide
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NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
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ip-10-0-12-178 Ready <none> 101s v1.23.1 10.0.12.178 <none> Fedora CoreOS 32.20201104.dev.0 5.8.17-200.fc32.aarch64 docker://19.3.11
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ip-10-0-18-93 Ready <none> 102s v1.23.1 10.0.18.93 <none> Fedora CoreOS 32.20201104.dev.0 5.8.17-200.fc32.aarch64 docker://19.3.11
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ip-10-0-90-10 Ready <none> 104s v1.23.1 10.0.90.10 <none> Fedora CoreOS 32.20201104.dev.0 5.8.17-200.fc32.aarch64 docker://19.3.11
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NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
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ip-10-0-21-119 Ready <none> 77s v1.23.1 10.0.21.119 <none> Fedora CoreOS 35.20211215.3.0 5.15.7-200.fc35.aarch64 containerd://1.5.8
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ip-10-0-32-166 Ready <none> 80s v1.23.1 10.0.32.166 <none> Fedora CoreOS 35.20211215.3.0 5.15.7-200.fc35.aarch64 containerd://1.5.8
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ip-10-0-5-79 Ready <none> 77s v1.23.1 10.0.5.79 <none> Fedora CoreOS 35.20211215.3.0 5.15.7-200.fc35.aarch64 containerd://1.5.8
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```
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## Hybrid
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@ -45,6 +45,10 @@ Typhoon is available for [Flatcar Linux](https://www.flatcar-linux.org/releases/
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| DigitalOcean | Flatcar Linux | [digital-ocean/flatcar-linux/kubernetes](flatcar-linux/digitalocean.md) | beta |
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| Google Cloud | Flatcar Linux | [google-cloud/flatcar-linux/kubernetes](flatcar-linux/google-cloud.md) | beta |
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| Platform | Operating System | Terraform Module | Status |
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|---------------|------------------|------------------|--------|
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| AWS | Flatcar Linux (ARM64) | [aws/flatcar-linux/kubernetes](advanced/arm64.md) | alpha |
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## Documentation
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* Architecture [concepts](architecture/concepts.md) and [operating-systems](architecture/operating-systems.md)
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