Merge pull request #2904 from superseb/flatcar_update

Update Flatcar requirements

content/rancher/v2.x/en/cluster-provisioning/node-requirements/_index.md

@@ -34,27 +34,32 @@ Some distributions of Linux derived from RHEL, including Oracle Linux, may have
 
 SUSE Linux may have a firewall that blocks all ports by default. In that situation, follow [these steps]({{<baseurl>}}/rancher/v2.x/en/installation/requirements/ports/#opening-suse-linux-ports) to open the ports needed for adding a host to a custom cluster.
 
-### Windows Nodes
+### Flatcar Container Linux Nodes
 
-_Windows worker nodes can be used as of Rancher v2.3.0_
+When [Launching Kubernetes with Rancher]({{<baseurl>}}/rancher/v2.x/en/cluster-provisioning/rke-clusters/) using Flatcar Container Linux nodes, it is required to use the following configuration in the [Cluster Config File]({{<baseurl>}}/rancher/v2.x/en/cluster-provisioning/rke-clusters/options/#cluster-config-file)
 
-Nodes with Windows Server must run Docker Enterprise Edition.
+{{% tabs %}}
+{{% tab "Canal"%}}
 
-Windows nodes can be used for worker nodes only. See [Configuring Custom Clusters for Windows]({{<baseurl>}}/rancher/v2.x/en/cluster-provisioning/rke-clusters/windows-clusters/)
-
-### Flatcar Linux Nodes
-
-To deploy an RKE Kubernetes cluster using Flatcar Linux (flatcar-linux-stable-2605.6.0) nodes, we recommend the following configuration in the `rancher-cluster.yml`:
-
-{{% accordion label="click to expand" %}}
 ```yaml
-nodes:
+rancher_kubernetes_engine_config:
-  - address:
+  network:
-    internal_address: 
+    plugin: canal
-    user: core
+    options:
-    role: [etcd, controlplane, worker]   
+      canal_flex_volume_plugin_dir: /opt/kubernetes/kubelet-plugins/volume/exec/nodeagent~uds
-    ssh_key_path:  
+      flannel_backend_type: vxlan
 
+  services:
+    kube-controller:
+      extra_args:
+        flex-volume-plugin-dir: /opt/kubernetes/kubelet-plugins/volume/exec/
+```
+{{% /tab %}}
+
+{{% tab "Calico"%}}
+
+```yaml
+rancher_kubernetes_engine_config:
   network:
     plugin: calico
     options:
@@ -66,9 +71,24 @@ services:
       extra_args:
         flex-volume-plugin-dir: /opt/kubernetes/kubelet-plugins/volume/exec/
 ```
-{{% /accordion %}}
+{{% /tab %}}
+{{% /tabs %}}
 
+It is also required to enable the Docker service, you can enable the Docker service using the following command:
 
+```
+systemctl enable docker.service
+```
+
+The Docker service is enabled automatically when using [Node Drivers]({{<baseurl>}}/rancher/v2.x/en/admin-settings/drivers/#node-drivers).
+
+### Windows Nodes
+
+_Windows worker nodes can be used as of Rancher v2.3.0_
+
+Nodes with Windows Server must run Docker Enterprise Edition.
+
+Windows nodes can be used for worker nodes only. See [Configuring Custom Clusters for Windows]({{<baseurl>}}/rancher/v2.x/en/cluster-provisioning/rke-clusters/windows-clusters/)
 
 # Hardware Requirements
 

content/rke/latest/en/os/_index.md

@@ -16,6 +16,7 @@ weight: 5
 
         - [OpenSSH version](#openssh-version)
         - [Creating a Docker Group](#creating-a-docker-group)
+    - [Flatcar Container Linux](#flatcar-container-linux)
 - [Software](#software)
 - [Ports](#ports)
 
@@ -162,6 +163,52 @@ By default, Atomic hosts do not come with a Docker group. You can update the own
 # chown <user> /var/run/docker.sock
 ```
 
+### Flatcar Container Linux
+
+When using Flatcar Container Linux nodes, it is required to use the following configuration in the cluster configuration file:
+
+{{% tabs %}}
+{{% tab "Canal"%}}
+
+```yaml
+rancher_kubernetes_engine_config:
+  network:
+    plugin: canal
+    options:
+      canal_flex_volume_plugin_dir: /opt/kubernetes/kubelet-plugins/volume/exec/nodeagent~uds
+      flannel_backend_type: vxlan
+
+  services:
+    kube-controller:
+      extra_args:
+        flex-volume-plugin-dir: /opt/kubernetes/kubelet-plugins/volume/exec/
+``` 
+{{% /tab %}}
+
+{{% tab "Calico"%}}
+
+```yaml
+rancher_kubernetes_engine_config:
+  network:
+    plugin: calico
+    options:
+      calico_flex_volume_plugin_dir: /opt/kubernetes/kubelet-plugins/volume/exec/nodeagent~uds
+      flannel_backend_type: vxlan
+
+  services:
+    kube-controller:
+      extra_args:
+        flex-volume-plugin-dir: /opt/kubernetes/kubelet-plugins/volume/exec/
+```
+{{% /tab %}}
+{{% /tabs %}}
+
+It is also required to enable the Docker service, you can enable the Docker service using the following command:
+
+```
+systemctl enable docker.service
+```
+
 ## Software
 
 This section describes the requirements for Docker, Kubernetes, and SSH.