Add Flatcar Linux ARM64 examples

* Fix content tabs format for switching between example
code blocks

docs/advanced/arm64.md

@@ -9,6 +9,8 @@ Typhoon has experimental support for ARM64 on AWS, with Fedora CoreOS or Flatcar
 
 Create a cluster with ARM64 controller and worker nodes. Container workloads must be `arm64` compatible and use `arm64` container images.
 
+=== "Fedora CoreOS Cluster (arm64)"
+
     ```tf
     module "gravitas" {
       source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes?ref=v1.23.1"
@@ -32,6 +34,31 @@ module "gravitas" {
     }
     ```
 
+=== "Flatcar Linux Cluster (arm64)"
+
+    ```tf
+    module "gravitas" {
+      source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes?ref=v1.23.1"
+
+      # AWS
+      cluster_name = "gravitas"
+      dns_zone     = "aws.example.com"
+      dns_zone_id  = "Z3PAABBCFAKEC0"
+
+      # configuration
+      ssh_authorized_key = "ssh-ed25519 AAAAB3Nz..."
+
+      # optional
+      arch         = "arm64"
+      networking   = "cilium"
+      worker_count = 2
+      worker_price = "0.0168"
+
+      controller_type = "t4g.small"
+      worker_type     = "t4g.small"
+    }
+    ```
+
 Verify the cluster has only arm64 (`aarch64`) nodes. For Flatcar Linux, describe nodes.
 
 ```
@@ -46,7 +73,7 @@ ip-10-0-5-79     Ready    <none>   77s   v1.23.1   10.0.5.79     <none>        F
 
 Create a hybrid/mixed arch cluster by defining an AWS cluster. Then define a [worker pool](worker-pools.md#aws) with ARM64 workers. Optional taints are added to aid in scheduling.
 
-=== "Cluster (amd64)"
+=== "FCOS Cluster"
 
     ```tf
     module "gravitas" {
@@ -69,7 +96,30 @@ Create a hybrid/mixed arch cluster by defining an AWS cluster. Then define a [wo
     }
     ```
 
-=== "Worker Pool (arm64)"
+=== "Flatcar Cluster"
+
+    ```tf
+    module "gravitas" {
+      source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes?ref=v1.23.1"
+
+      # AWS
+      cluster_name = "gravitas"
+      dns_zone     = "aws.example.com"
+      dns_zone_id  = "Z3PAABBCFAKEC0"
+
+      # configuration
+      ssh_authorized_key = "ssh-ed25519 AAAAB3Nz..."
+
+      # optional
+      networking   = "cilium"
+      worker_count = 2
+      worker_price = "0.021"
+
+      daemonset_tolerations = ["arch"]     # important
+    }
+    ```
+
+=== "FCOS ARM64 Workers"
 
     ```tf
     module "gravitas-arm64" {
@@ -93,14 +143,38 @@ Create a hybrid/mixed arch cluster by defining an AWS cluster. Then define a [wo
     }
     ```
 
+=== "Flatcar ARM64 Workers"
+
+    ```tf
+    module "gravitas-arm64" {
+      source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes/workers?ref=v1.23.1"
+
+      # AWS
+      vpc_id          = module.gravitas.vpc_id
+      subnet_ids      = module.gravitas.subnet_ids
+      security_groups = module.gravitas.worker_security_groups
+
+      # configuration
+      name               = "gravitas-arm64"
+      kubeconfig         = module.gravitas.kubeconfig
+      ssh_authorized_key = var.ssh_authorized_key
+
+      # optional
+      arch          = "arm64"
+      instance_type = "t4g.small"
+      spot_price    = "0.0168"
+      node_taints   = ["arch=arm64:NoSchedule"]
+    }
+    ```
+
 Verify amd64 (x86_64) and arm64 (aarch64) nodes are present.
 
 ```
 $ kubectl get nodes -o wide
 NAME                       STATUS   ROLES    AGE    VERSION   INTERNAL-IP   EXTERNAL-IP   OS-IMAGE                                             KERNEL-VERSION            CONTAINER-RUNTIME
-ip-10-0-1-81    Ready    <none>   4m28s   v1.23.1   10.0.1.81     <none>        Fedora CoreOS 34.20210427.3.0     5.11.15-300.fc34.x86_64    docker://20.10.6
+ip-10-0-1-73               Ready    <none>   111m   v1.23.1   10.0.1.73     <none>        Fedora CoreOS 35.20211215.3.0                        5.15.7-200.fc35.x86_64    containerd://1.5.8
-ip-10-0-17-86   Ready    <none>   4m28s   v1.23.1   10.0.17.86    <none>        Fedora CoreOS 33.20210413.dev.0   5.10.19-200.fc33.aarch64   docker://19.3.13
+ip-10-0-22-79...           Ready    <none>   111m   v1.23.1   10.0.22.79    <none>        Flatcar Container Linux by Kinvolk 3033.2.0 (Oklo)   5.10.84-flatcar           containerd://1.5.8
-ip-10-0-21-45   Ready    <none>   4m28s   v1.23.1   10.0.21.45    <none>        Fedora CoreOS 34.20210427.3.0     5.11.15-300.fc34.x86_64    docker://20.10.6
+ip-10-0-24-130             Ready    <none>   111m   v1.23.1   10.0.24.130   <none>        Fedora CoreOS 35.20211215.3.0                        5.15.7-200.fc35.x86_64    containerd://1.5.8
-ip-10-0-40-36   Ready    <none>   4m22s   v1.23.1   10.0.40.36    <none>        Fedora CoreOS 34.20210427.3.0     5.11.15-300.fc34.x86_64    docker://20.10.6
+ip-10-0-39-19              Ready    <none>   111m   v1.23.1   10.0.39.19    <none>        Fedora CoreOS 35.20211215.3.0                        5.15.7-200.fc35.x86_64    containerd://1.5.8
 ```
 

mkdocs.yml

@@ -43,7 +43,8 @@ markdown_extensions:
   - pymdownx.mark
   - pymdownx.smartsymbols
   - pymdownx.superfences
-  - pymdownx.tabbed
+  - pymdownx.tabbed:
+      alternate_style: true
   - pymdownx.tasklist:
       custom_checkbox: true
   - pymdownx.tilde