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Merge pull request #2904 from superseb/flatcar_update
Update Flatcar requirements
This commit is contained in:
Catherine Luse
GitHub
@@ -34,6 +34,54 @@ Some distributions of Linux derived from RHEL, including Oracle Linux, may have
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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.
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### Flatcar Container Linux Nodes
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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)
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{{% tabs %}}
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{{% tab "Canal"%}}
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```yaml
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rancher_kubernetes_engine_config:
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network:
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plugin: canal
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options:
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canal_flex_volume_plugin_dir: /opt/kubernetes/kubelet-plugins/volume/exec/nodeagent~uds
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flannel_backend_type: vxlan
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services:
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kube-controller:
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extra_args:
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flex-volume-plugin-dir: /opt/kubernetes/kubelet-plugins/volume/exec/
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```
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{{% /tab %}}
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{{% tab "Calico"%}}
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```yaml
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rancher_kubernetes_engine_config:
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network:
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plugin: calico
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options:
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calico_flex_volume_plugin_dir: /opt/kubernetes/kubelet-plugins/volume/exec/nodeagent~uds
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flannel_backend_type: vxlan
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services:
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kube-controller:
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extra_args:
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flex-volume-plugin-dir: /opt/kubernetes/kubelet-plugins/volume/exec/
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```
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{{% /tab %}}
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{{% /tabs %}}
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It is also required to enable the Docker service, you can enable the Docker service using the following command:
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```
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systemctl enable docker.service
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```
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The Docker service is enabled automatically when using [Node Drivers]({{<baseurl>}}/rancher/v2.x/en/admin-settings/drivers/#node-drivers).
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### Windows Nodes
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_Windows worker nodes can be used as of Rancher v2.3.0_
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@@ -42,34 +90,6 @@ Nodes with Windows Server must run Docker Enterprise Edition.
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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/)
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### Flatcar Linux Nodes
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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`:
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{{% accordion label="click to expand" %}}
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```yaml
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nodes:
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- address:
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internal_address:
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user: core
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role: [etcd, controlplane, worker]
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ssh_key_path:
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network:
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plugin: calico
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options:
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calico_flex_volume_plugin_dir: /opt/kubernetes/kubelet-plugins/volume/exec/nodeagent~uds
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flannel_backend_type: vxlan
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services:
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kube-controller:
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extra_args:
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flex-volume-plugin-dir: /opt/kubernetes/kubelet-plugins/volume/exec/
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```
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{{% /accordion %}}
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# Hardware Requirements
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The hardware requirements for nodes with the `worker` role mostly depend on your workloads. The minimum to run the Kubernetes node components is 1 CPU (core) and 1GB of memory.
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@@ -16,6 +16,7 @@ weight: 5
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- [OpenSSH version](#openssh-version)
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- [Creating a Docker Group](#creating-a-docker-group)
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- [Flatcar Container Linux](#flatcar-container-linux)
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- [Software](#software)
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- [Ports](#ports)
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@@ -162,6 +163,52 @@ By default, Atomic hosts do not come with a Docker group. You can update the own
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# chown <user> /var/run/docker.sock
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```
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### Flatcar Container Linux
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When using Flatcar Container Linux nodes, it is required to use the following configuration in the cluster configuration file:
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{{% tabs %}}
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{{% tab "Canal"%}}
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```yaml
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rancher_kubernetes_engine_config:
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network:
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plugin: canal
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options:
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canal_flex_volume_plugin_dir: /opt/kubernetes/kubelet-plugins/volume/exec/nodeagent~uds
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flannel_backend_type: vxlan
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services:
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kube-controller:
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extra_args:
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flex-volume-plugin-dir: /opt/kubernetes/kubelet-plugins/volume/exec/
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```
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{{% /tab %}}
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{{% tab "Calico"%}}
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```yaml
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rancher_kubernetes_engine_config:
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network:
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plugin: calico
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options:
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calico_flex_volume_plugin_dir: /opt/kubernetes/kubelet-plugins/volume/exec/nodeagent~uds
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flannel_backend_type: vxlan
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services:
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kube-controller:
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extra_args:
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flex-volume-plugin-dir: /opt/kubernetes/kubelet-plugins/volume/exec/
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```
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{{% /tab %}}
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{{% /tabs %}}
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It is also required to enable the Docker service, you can enable the Docker service using the following command:
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```
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systemctl enable docker.service
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```
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## Software
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This section describes the requirements for Docker, Kubernetes, and SSH.
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