Update content/k3s/latest/en/networking/_index.md

Co-authored-by: Brad Davidson <brad@oatmail.org>
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Catherine Luse
2020-08-10 09:46:22 -07:00
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This page explains how CoreDNS, the Traefik Ingress controller, and the built-in service load balancer work with K3s.
This page explains how CoreDNS, the Traefik Ingress controller, and Klipper service load balancer work within K3s.
For information on CNI options, refer to the [Installation Network Options]({{<baseurl>}}/k3s/latest/en/installation/network-options/) page. Please reference that page for details on Flannel and the various flannel backend options or how to set up your own CNI.
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# Nodes Without a Hostname
Some cloud providers, such as Linode, will create machines with "localhost" as the hostname and others may not have a hostname set at all. This can cause problems with domain name resolution. You can run K3s with the `--node-name` flag or `K3S_NODE_NAME` environment variable and this will pass the node name to resolve this issue.
Some cloud providers, such as Linode, will create machines with "localhost" as the hostname and others may not have a hostname set at all. This can cause problems with domain name resolution. You can run K3s with the `--node-name` flag or `K3S_NODE_NAME` environment variable and this will pass the node name to resolve this issue.