rancher-docs/content/rke/v0.1.x/en/config-options/add-ons/ingress-controllers/_index.md

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Ingress Controllers	262

By default, RKE deploys the nginx ingress controller on all schedulable nodes.

Note: As of v0.1.8, only workers are considered schedulable nodes, but prior to v0.1.8, worker and controlplane nodes were considered schedulable nodes.

RKE will deploy the ingress controller as a DaemonSet with hostnetwork: true, so ports 80, and 443 will be opened on each node where the controller is deployed.

The images used for ingress controller is under the [system_images directive]({< baseurl >}}/rke/v0.1.x/en/config-options/system-images/). For each Kubernetes version, there are default images associated with the ingress controller, but these can be overridden by changing the image tag in system_images.

Scheduling Ingress Controllers

If you only wanted ingress controllers to be deployed on specific nodes, you can set a node_selector for the ingress. The label in the node_selector would need to match the label on the nodes for the ingress controller to be deployed.

nodes:
    - address: 1.1.1.1
      role: [controlplane,worker,etcd]
      user: root
      labels:
        app: ingress

ingress:
    provider: nginx
    node_selector:
      app: ingress

Disabling the Default Ingress Controller

You can disable the default controller by specifying none to the ingress provider directive in the cluster configuration.

ingress:
    provider: none

Configuring NGINX Ingress Controller

For the configuration of nginx, there are configuration options available in Kubernetes. There are a list of options for the NGINX config map , command line extra_args and annotations.

ingress:
    provider: nginx
    options:
      map-hash-bucket-size: "128"
      ssl-protocols: SSLv2
    extra_args:
      enable-ssl-passthrough: ""